Backend Java Developer (m/f/x)

🏢 Summary: Backend Java Developer role focused on building secure, scalable backend services for national digital identity infrastructure. The position involves Java-based backend development, applied cryptography, REST APIs, CI/CD, and collaboration in a Scrum environment to deliver stable and secure authentication solutions. The offer includes hybrid work, development budget, training opportunities, and comprehensive employee benefits. 🗂️ Requirements: Experience developing enterprise IT systems, Strong experience with Java, Strong experience with SpringBoot, Strong experience with Hibernate, Experience with OpenShift, Understanding of cryptographic concepts, Experience with security-related systems, Experience with relational databases, Experience with Oracle, Experience with Jenkins, Experience with Jira, Experience with Confluence, Experience with JUnit, Understanding of REST APIs, Knowledge of backend architecture, Familiarity with DevOps practices, English proficiency 📃 Skills: Java, SpringBoot, Hibernate, OpenShift, Oracle, Jenkins, Jira, Confluence, JUnit, REST, DevOps, Angular, Scrum, CI/CD, Cryptography 🏢 Description: IN GROUPE A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries. Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world. ABOUT THE TEAM You will join a team of experienced specialists dedicated to delivering secure, stable, and high‑quality digital identity solutions. Reliability and IT security are at the core of everything we build — from applied cryptography to user‑facing authentication flows. The team operates in a collaborative Scrum setup, working closely with architects, developers, business analysts, testers, a Product Owner, and other key stakeholders. Together, we design and deliver enhancements and updates to the MitID platform. ABOUT THE ROLE As a Backend Java Developer , you will be part of a highly professional environment focused on building secure, reliable, and scalable backend services for national digital identity infrastructure. Your work will revolve around Java‑based backend development , applied cryptography, high availability, and continuous improvement of mission‑critical systems. You will design, develop, and maintain backend components, ensure code quality, troubleshoot complex issues, and contribute to the evolution of our platform. You will also collaborate closely with other team members to ensure seamless integration, stable deployments, and high‑quality delivery across environments. MAIN RESPONSABILITIES Backend software development — designing and implementing high‑quality backend components in Java. Writing clean and maintainable code based on technical and functional specifications. Technical documentation — preparing and maintaining documentation for knowledge sharing and reporting. Defect analysis — identifying, analyzing, and resolving software issues. Troubleshooting, debugging, and enhancing existing backend services. Verifying and deploying programs and systems across relevant environments. Contributing to continuous improvement initiatives within the development team. Collaborating with architects, testers, and other developers to ensure secure and stable delivery. REQUIREMENTS Experience in developing enterprise IT systems and complex backend solutions. Strong hands‑on experience with Java , Spring Boot , Hibernate , and containerized environments such as OpenShift . Understanding of cryptographic concepts and experience with security‑related systems. Experience with relational databases (preferably Oracle ). Practical experience with CI/CD tools such as Jenkins. Experience using Jira , Confluence , or similar platforms. Experience with automated testing tools such as JUnit. Strong understanding of REST APIs and backend architectural principles. Familiarity with DevOps practices and related toolchains. Proficiency in written and spoken English. Nice to Have Experience with frontend development (especially Angular ). Knowledge of Agile/Scrum methodologies. Motivation and ability to learn new technologies. Strong communication skills and the ability to collaborate effectively in a team. BENEFITS OF JOINING IN GROUPE ✨ What you’ll get (beyond the job itself) At IN Groupe, we build secure identities and digital trust for millions of people worldwide - but we also make sure our teams feel secure, supported, and inspired every day. Here’s what that means in practice: Most important: employment based on an employment contract 🧑‍⚕️ Your health & security come first Private medical care (Medicover) - base package fully covered for you, with the option to include your loved ones Group life insurance - base package fully financed by the company Access to a benefits cafeteria - flexible and not limited to sports or culture 🧠 Grow your skills. Shape your path. Annual development budget (2000 PLN) - use it for conferences, books, or training that actually supports your work Access to IN Academy - our global learning platform co-created by employees across the group English classes during working hours 🏋️ Stay active, your way Multisport card (60% co-financed) with multiple package options Possibility to include family members - kids, students, and seniors 🏢 Work comfortably - in a way that suits you Hybrid model - 2 days from the office Free parking Office stocked with coffee, fresh fruit, and snacks 🤝 A team you actually want to spend time with We’re a growing, 40-person team in Poland - small enough to know each other, big enough to make an impact. Regular team integrations and meetups Monthly “Coffee Talks” - project updates, knowledge sharing, and good food Internal tech & topic meetups with invited speakers (you help choose the topics) 🎲 More than just work Ping-pong tournaments, board game sessions, and informal hangouts Community team - join it and have a real influence on company initiatives, events, and workplace experience 🌍 Work that matters You’ll be part of a global organization with a unique legacy (Imprimerie Nationale) and a clear mission: to protect identities and secure digital interactions for millions of people worldwide. 💡 Why it’s different here We combine the stability and scale of an international group with the atmosphere of a close-knit team in Poland. You’re not just joining a company - you’re helping build how trust works in the digital world.

🏢 Summary: Backend Developer role focused on building and maintaining secure, high-availability digital identity systems within a national authentication platform, with strong emphasis on IT security, cryptography, and enterprise backend development in a Scrum environment. 🗂️ Requirements: Experience in developing enterprise IT systems, Strong hands-on experience with Java, Strong hands-on experience with Spring Boot, Experience with OpenShift, Experience with Hibernate, Knowledge of cryptographic concepts, Experience with security-related systems, Experience with relational databases (Oracle preferred), Experience with CI/CD tools (Jenkins), Experience with automated testing (JUnit), Strong understanding of REST APIs, Familiarity with DevOps practices, Experience with Jira or Confluence, Proficiency in English 📃 Skills: Java, Spring, SpringBoot, OpenShift, Hibernate, Oracle, SQL, Jenkins, JUnit, REST, DevOps, Jira, Confluence, Cryptography, CI/CD 🏢 Description: IN GROUPE A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries. Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world. ABOUT THE TEAM You’ll join a team of experienced and dedicated colleagues who share a strong commitment to delivering secure, stable, and high-quality digital identity solutions. At MitID, reliability and IT security are at the core of everything we build, ranging from applied cryptography to user-facing authentication flows. The team works in a collaborative Scrum setup with architects, developers, business analysts, testers, a Product Owner, and other key stakeholders. Together, we design and deliver enhancements and updates to the MitID platform. ABOUT THE ROLE We are seeking a skilled and dedicated Backend Developer to join our MitID development organization. You will become part of a professional environment where all team members share a strong commitment to delivering secure, reliable, and high‑quality digital identity solutions. Our work is centered around IT security, high availability, applied cryptography, and the continuous development of national digital identity infrastructure. MAIN RESPONSABILITIES The Backend Developer will be responsible for: Developing high‑quality backend software and delivering robust application components within agreed timelines Producing clean, efficient, and maintainable code based on technical and functional specifications Preparing and maintaining technical documentation for reference, knowledge sharing, and reporting Identifying, analyzing, and resolving software defects in a timely manner Troubleshooting, debugging, and enhancing existing services and backend components Verifying and deploying programs and systems across relevant environments Contributing proactively to continuous improvement efforts within the development team REQUIREMENTS Experience in developing enterprise IT systems and complex software solutions Solid hands‑on experience with backend technologies such as Java, Spring Boot, OpenShift, and Hibernate Experience with cryptographic concepts and familiarity with security‑related systems Experience with relational databases, preferably Oracle Practical experience with CI/CD tools, such as Jenkins Experience using Jira, Confluence, or similar platforms for issue tracking and documentation Experience with automated testing tools such as JUnit Strong understanding of REST APIs and related architectural principles Familiarity with DevOps practices and associated toolchains Proficiency in written and spoken English The following competencies will be considered an advantage : Experience with front‑end development, particularly Angular Knowledge of Agile development methodologies Demonstrated ability and motivation to learn new technologies Strong communication skills and the ability to collaborate effectively in a team environment BENEFITS OF JOINING IN GROUPE ✨ What you’ll get (beyond the job itself) At IN Groupe, we build secure identities and digital trust for millions of people worldwide - but we also make sure our teams feel secure, supported, and inspired every day. Here’s what that means in practice: Most important: employment based on an employment contract 🧑‍⚕️ Your health & security come first Private medical care (Medicover) - base package fully covered for you, with the option to include your loved ones Group life insurance - base package fully financed by the company Access to a benefits cafeteria - flexible and not limited to sports or culture 🧠 Grow your skills. Shape your path. Annual development budget (2000 PLN) - use it for conferences, books, or training that actually supports your work Access to IN Academy - our global learning platform co-created by employees across the group English classes during working hours 🏋️ Stay active, your way Multisport card (60% co-financed) with multiple package options Possibility to include family members - kids, students, and seniors 🏢 Work comfortably - in a way that suits you Hybrid model - 2 days from the office Free parking Office stocked with coffee, fresh fruit, and snacks 🤝 A team you actually want to spend time with We’re a growing, 40-person team in Poland - small enough to know each other, big enough to make an impact. Regular team integrations and meetups Monthly “Coffee Talks” - project updates, knowledge sharing, and good food Internal tech & topic meetups with invited speakers (you help choose the topics) 🎲 More than just work Ping-pong tournaments, board game sessions, and informal hangouts Community team - join it and have a real influence on company initiatives, events, and workplace experience 🌍 Work that matters You’ll be part of a global organization with a unique legacy (Imprimerie Nationale) and a clear mission: to protect identities and secure digital interactions for millions of people worldwide. 💡 Why it’s different here We combine the stability and scale of an international group with the atmosphere of a close-knit team in Poland. You’re not just joining a company - you’re helping build how trust works in the digital world.

🏢 Summary: Frontend Developer role focused on developing and maintaining secure digital identity web applications within a Scrum team. The position involves building Angular-based frontend solutions, implementing user-friendly interfaces, and ensuring security, accessibility, and code quality standards. The offer includes hybrid work, development budget, learning opportunities, and comprehensive health and wellness benefits. 🗂️ Requirements: 2+ years of experience developing Angular applications with TypeScript, Bachelor’s degree in computer science, engineering, related field, or equivalent experience, Proficiency in Angular 15+, Proficiency in NodeJS, Proficiency in TypeScript, Proficiency in React, Proficiency in JavaScript, Proficiency in HTML, Proficiency in CSS, Understanding of frontend development best practices, Knowledge of SOLID principles, Familiarity with monorepo frontend architecture patterns, Understanding of REST API principles, Experience with NGXS and OpenAPI, Experience with WCAG accessibility guidelines, Experience writing unit tests, Good communication and teamwork skills, Strong problem-solving skills 📃 Skills: Angular, TypeScript, NodeJS, React, JavaScript, HTML, CSS, NGXS, OpenAPI, REST, WCAG, Playwright, Jira, Confluence, Scrum 🏢 Description: IN GROUPE A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries. Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world. ABOUT THE TEAM & ROLE We are seeking a skilled and dedicated Frontend Developer to join our MitID development team. You will become part of a professional environment where all team members share a strong commitment delivering secure, reliable, and high‑quality digital identity solutions. We work in a collaborative Scrum setup with architects, developers, business analysts, testers, a Product Owner, and other key stakeholders. Together, we maintain, design and deliver enhancements and updates to the MitID platform. MAIN RESPONSABILITIES Maintaining and developing new functionality in the MitID web app. Writing clean, maintainable, and efficient code that is easy to read and modify by other team members. Follow security best practices to ensure that the user's data is protected from malicious attacks. Participate in code reviews to ensure that the code meets the team's coding standards and is consistent with the project's goals. Designing and implementing user-friendly interfaces that are intuitive and easy to use. Participation in Scrum team meetings including daily stand up, sprint kick-off and retrospective REQUIREMENTS 2+ years of experience developing complex Angular applications with Typescript. Bachelor’s degree in computer science, engineering, or any other related field, or any equivalent training, or work experience. Proficiency in Angular (version 15+), NodeJS, TypeScript, React, JavaScript, HTML and CSS. Strong understanding of frontend development concepts and best practices. Aware of SOLID principles, with a focus on simplicity and code readability. Familiarity with monorepo and best practice frontend architecture patterns. Good understanding of REST API principles and usage with NGXS and OpenAPI. Experience with WCAG accessibility guidelines. Strong unit test design awareness and experience writing unit tests. Team player with good communication, reasoning and compromising skills. Strong problem-solving skills and ability to work collaboratively with other developers, UX designers, and other stakeholders. The following competencies will be considered an advantage: Knowledge of frontend security features such as authentication mechanisms, secure communication protocols, and data encryption. Experience with agile development methodologies and tools such as Jira and Confluence. Experience with Playwright as frontend UI testing framework. BENEFITS OF JOINING IN GROUPE ✨ What you’ll get (beyond the job itself) At IN Groupe, we build secure identities and digital trust for millions of people worldwide - but we also make sure our teams feel secure, supported, and inspired every day. Here’s what that means in practice: Most important: employment based on an employment contract 🧑‍⚕️ Your health & security come first Private medical care (Medicover) - base package fully covered for you, with the option to include your loved ones Group life insurance - base package fully financed by the company Access to a benefits cafeteria - flexible and not limited to sports or culture 🧠 Grow your skills. Shape your path. Annual development budget (2000 PLN) - use it for conferences, books, or training that actually supports your work Access to IN Academy - our global learning platform co-created by employees across the group English classes during working hours 🏋️ Stay active, your way Multisport card (60% co-financed) with multiple package options Possibility to include family members - kids, students, and seniors 🏢 Work comfortably - in a way that suits you Hybrid model - 2 days from the office Free parking Office stocked with coffee, fresh fruit, and snacks 🤝 A team you actually want to spend time with We’re a growing, 40-person team in Poland - small enough to know each other, big enough to make an impact. Regular team integrations and meetups Monthly “Coffee Talks” - project updates, knowledge sharing, and good food Internal tech & topic meetups with invited speakers (you help choose the topics) 🎲 More than just work Ping-pong tournaments, board game sessions, and informal hangouts Community team - join it and have a real influence on company initiatives, events, and workplace experience 🌍 Work that matters You’ll be part of a global organization with a unique legacy (Imprimerie Nationale) and a clear mission: to protect identities and secure digital interactions for millions of people worldwide. 💡 Why it’s different here We combine the stability and scale of an international group with the atmosphere of a close-knit team in Poland. You’re not just joining a company - you’re helping build how trust works in the digital world.

🏢 Summary: The role is for an experienced Software Tester responsible for end-to-end testing of secure digital identity solutions, combining strong manual testing with backend-focused test automation. The position covers frontend and backend validation, API and integration testing, and quality assurance within a CI/CD environment in an Agile setup. 🗂️ Requirements: Technical education in software testing or software development, Minimum 5 years of software testing experience, Strong manual testing skills, Solid knowledge of test processes and QA methodologies, ISTQB Foundation certification, Experience with Cucumber and ReadyAPI, Experience in API and UI testing, Experience working with multiple environments and backend endpoints, Ability to analyze logs and perform system monitoring, Experience working in Agile/Scrum, Experience with Jira and test management tools 📃 Skills: Cucumber, ReadyAPI, Playwright, REST, JSON, HTTP, API, UI, CI/CD, Jira, Scrum, ISTQB, Cryptography, Authentication 🏢 Description: ABOUT IN GROUPE A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries. Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world. ABOUT THE TEAM You will join a team of experienced specialists dedicated to delivering secure, stable, and high‑quality digital identity solutions. Reliability and IT security are at the heart of everything we build — from applied cryptography to user‑facing authentication flows. The team works in a collaborative Scrum setup, bringing together architects, developers, business analysts, testers, a Product Owner, and other key stakeholders. Together, we design and deliver enhancements and updates to the MitID platform. ABOUT THE ROLE As a Software Tester, you will play a key role in shaping new features by analyzing business logic changes and contributing to solution design. This position requires strong manual testing skills — approximately 50% of your work will be manual , and we are looking for someone who genuinely enjoys and values this part of the craft. You will own the end‑to‑end testing process across both frontend and backend, from identifying the test basis to designing test cases, executing tests, and monitoring progress. A significant part of the role involves maintaining and expanding our backend‑focused test automation , especially around API and functional testing — but we are not looking for automation‑only profiles. You will test integrations, authentication flows, cryptographic operations, and backend components across multiple environments. You will perform both exploratory and structured testing, support deployments, and ensure high‑quality delivery throughout our CI/CD pipeline. MAIN RESPONSABILITIES End‑to‑end test analysis — analyzing business logic changes and contributing to feature design. Owning the full test process for both frontend and backend, from test basis identification to execution monitoring. Manual testing — performing structured and exploratory tests across UI and API layers. Test automation maintenance with a focus on backend/API automation. Designing and documenting test cases for frontend, backend logic, integrations, and service‑to‑service communication. Writing and maintaining automated tests (Cucumber, ReadyAPI; basic Playwright knowledge is a plus). Testing backend components across multiple environments, ensuring data integrity and stable service behavior. Validating protocol flows, authentication logic, cryptographic operations, and backend configuration changes. Root cause analysis and contributing to risk assessments of discovered defects. Participating in deployments and release activities within the CI/CD pipeline. REQUIREMENTS Technical education in software testing or software development. Minimum 5 years of testing experience , including strong manual testing skills. Solid understanding of test processes, structured test design, and QA methodologies . ISTQB Foundation certification (minimum). Experience with Cucumber , ReadyAPI , and optionally Playwright . Experience with multiple environments , backend endpoints, log analysis, and system monitoring. Experience with API and UI testing . Familiarity with REST, JSON, HTTP methods, authentication flows , or basic cryptographic concepts is an advantage. Experience working in Agile/Scrum and with tools such as Jira and test management systems. BENEFITS OF JOINING IN GROUPE ✨ What you’ll get (beyond the job itself) At IN Groupe, we build secure identities and digital trust for millions of people worldwide - but we also make sure our teams feel secure, supported, and inspired every day. Here’s what that means in practice: Most important: employment based on an employment contract 🧑‍⚕️ Your health & security come first Private medical care (Medicover) - base package fully covered for you, with the option to include your loved ones Group life insurance - base package fully financed by the company Access to a benefits cafeteria - flexible and not limited to sports or culture 🧠 Grow your skills. Shape your path. Annual development budget (2000 PLN) - use it for conferences, books, or training that actually supports your work Access to IN Academy - our global learning platform co-created by employees across the group English classes during working hours 🏋️ Stay active, your way Multisport card (60% co-financed) with multiple package options Possibility to include family members - kids, students, and seniors 🏢 Work comfortably - in a way that suits you Hybrid model - 2 days from the office Free parking Office stocked with coffee, fresh fruit, and snacks 🤝 A team you actually want to spend time with We’re a growing, 40-person team in Poland - small enough to know each other, big enough to make an impact. Regular team integrations and meetups Monthly “Coffee Talks” - project updates, knowledge sharing, and good food Internal tech & topic meetups with invited speakers (you help choose the topics) 🎲 More than just work Ping-pong tournaments, board game sessions, and informal hangouts Community team - join it and have a real influence on company initiatives, events, and workplace experience 🌍 Work that matters You’ll be part of a global organization with a unique legacy (Imprimerie Nationale) and a clear mission: to protect identities and secure digital interactions for millions of people worldwide. 💡 Why it’s different here We combine the stability and scale of an international group with the atmosphere of a close-knit team in Poland. You’re not just joining a company - you’re helping build how trust works in the digital world.

🏢 Summary: The role focuses on end-to-end testing of secure digital identity solutions, covering both frontend and backend components with strong emphasis on backend/API test automation. You will design, execute, and maintain automated and manual tests, validate authentication and cryptographic flows, and ensure quality across CI/CD pipelines. The position operates within a Scrum team delivering high-security identity platform enhancements. 🗂️ Requirements: Technical education in software testing or software development, Minimum 5 years of software testing experience, Strong knowledge of test processes and structured test design techniques, Experience with risk-based testing, ISTQB Foundation certification, Experience with test automation tools (Cucumber, Selenium/Appium, ReadyAPI), Experience testing backend systems and APIs across multiple environments, Experience with log analysis and system monitoring during tests, Experience working in Agile/Scrum environment, Experience with Jira and test management tools 📃 Skills: Cucumber, Selenium, Appium, ReadyAPI, REST, JSON, HTTP, CI/CD, Jira, Scrum, ISTQB 🏢 Description: ABOUT COMPANY A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries. Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world. ABOUT THE TEAM You’ll join a team of experienced and dedicated colleagues who share a strong commitment to delivering secure, stable, and high-quality digital identity solutions. At MitID, reliability and IT security are at the core of everything we build, ranging from applied cryptography to user-facing authentication flows. The team works in a collaborative Scrum setup with architects, developers, business analysts, testers, a Product Owner, and other key stakeholders. Together, we design and deliver enhancements and updates to the MitID platform. ABOUT THE ROLE In this role, you will help shape new features by analyzing business logic changes and contributing to solution design. You will own the end‑to‑end testing process across frontend and backend, from test basis identification to structured execution and monitoring. A key focus is maintaining and expanding our backend‑focused test automation setup, including API and functional tests. You will design and document test cases, validate integrations, authentication flows, and cryptographic operations, and perform both exploratory and structured testing. Additionally, you will support deployments and ensure high‑quality delivery throughout our CI/CD pipeline. MAIN RESPONSABILITIES Take part in analysis of changes to business logic and contribute to the design of new features Take responsibility for the end-to-end test process for both frontend and backend from identifying the test basis, over test case design, to setting up the test set structure and monitoring the execution progress Maintaining, improving, and expanding our test automation setup , with a focus on backend/API automation. Designing and documenting test cases for both frontend as well as backend logic, integrations, and service‑to‑service communication. Writing and maintaining automated tests , including functional tests in Cucumber and REST/API tests in ReadyAPI. Testing backend components across multiple environments, ensuring data integrity and reliable service behavior. Validating protocol flows , authentication logic, cryptographic operations, and backend configuration changes. Execute both exploratory and structured tests Analysing test results, identifying root causes , and contributing to risk assessments of discovered defects. Participating in deployments and release activities , ensuring quality throughout the CI/CD pipeline. REQUIREMENTS A technical education within software testing or software development Min. 5 years of testing experience, and hands on knowledge about test processes, test design techniques and risk-based testing Strong understanding of test processes, structured test design, and QA methodologies ISTQB Foundation certification as a minimum Experience with test automation tools such as Cucumber, Selenium/Appium (if used for API test orchestration), and ReadyAPI Experience working with multiple environments, backend endpoints, log analysis, and system monitoring during tests Experience with agile development and Scrum Experience with Jira and test management tools Knowledge of REST, JSON, HTTP methods, authentication flows, or cryptographic concepts is a plus BENEFITS OF JOINING IN GROUPE ✨ What you’ll get (beyond the job itself) At IN Groupe, we build secure identities and digital trust for millions of people worldwide - but we also make sure our teams feel secure, supported, and inspired every day. Here’s what that means in practice: Most important: employment based on an employment contract 🧑‍⚕️ Your health & security come first Private medical care (Medicover) - base package fully covered for you, with the option to include your loved ones Group life insurance - base package fully financed by the company Access to a benefits cafeteria - flexible and not limited to sports or culture 🧠 Grow your skills. Shape your path. Annual development budget (2000 PLN) - use it for conferences, books, or training that actually supports your work Access to IN Academy - our global learning platform co-created by employees across the group English classes during working hours 🏋️ Stay active, your way Multisport card (60% co-financed) with multiple package options Possibility to include family members - kids, students, and seniors 🏢 Work comfortably - in a way that suits you Hybrid model - 2 days from the office Free parking Office stocked with coffee, fresh fruit, and snacks 🤝 A team you actually want to spend time with We’re a growing, 40-person team in Poland - small enough to know each other, big enough to make an impact. Regular team integrations and meetups Monthly “Coffee Talks” - project updates, knowledge sharing, and good food Internal tech & topic meetups with invited speakers (you help choose the topics) 🎲 More than just work Ping-pong tournaments, board game sessions, and informal hangouts Community team - join it and have a real influence on company initiatives, events, and workplace experience 🌍 Work that matters You’ll be part of a global organization with a unique legacy (Imprimerie Nationale) and a clear mission: to protect identities and secure digital interactions for millions of people worldwide. 💡 Why it’s different here We combine the stability and scale of an international group with the atmosphere of a close-knit team in Poland. You’re not just joining a company - you’re helping build how trust works in the digital world.

🏢 Summary: Hybrid Java Backend Developer role in a fintech environment focused on building and maintaining backend services for complex financial instruments and calculations. The position involves end-to-end feature delivery, including functional frontend contributions and integration with third-party systems. You will work with modern architectures and AI-assisted coding tools in a regulated, data-intensive domain. 🗂️ Requirements: 10+ years of backend or full-stack development experience, Strong proficiency in Java, Experience building REST APIs and microservices, Experience with HTTP-based integrations, Ability to implement and modify frontend features, Experience with SQL and NoSQL databases, Knowledge of CI/CD pipelines and deployment processes, Active use of AI coding tools, Experience in fintech or financial domain 📃 Skills: Java, REST, HTTP, Microservices, SQL, NoSQL, PostgreSQL, MongoDB, Redis, Angular, React, CI/CD, Copilot, Cursor 🏢 Description: Salary: 1100-1400 pln/md Work model: Hybrid from Gdynia/Gdańsk (once per week from the office) Why choose this offer? End‑to‑end ownership with a modern tech stack Stability combined with continuous growth Autonomy and high‑quality collaboration Project We are looking for a Java Backend Developer with a pragmatic, end-to-end mindset - someone who is not afraid to step into frontend territory when needed and treats AI-assisted coding as a natural part of their workflow. You will be working on complex financial instruments and calculations in a fintech environment , building and maintaining backend services while contributing to full product delivery when required. Responsibilities you'll have Design, develop, and maintain robust backend services and APIs in Java Deliver end-to-end features independently - from backend logic to frontend implementation (e.g. generating monthly cash statements, reports, financial calculations) Work with frontend layers (Angular or other frameworks) at a functional level - not as a specialist, but as someone who can get things done Integrate backend systems with frontend and third-party services Participate in code reviews , maintain code quality standards Support CI/CD pipelines and production releases Leverage AI coding tools (agentic coding, vibe coding) as an active part of daily workflow Expected competences and knowledge 10+ years of experience in backend/full-stack development Strong Java experience (core requirement) Experience building REST APIs, microservices, HTTP -based integrations Basic exposure to frontend frameworks (Angular, React, or other) - ability to implement and modify frontend features, not expert-level Solid SQL / NoSQL (PostgreSQL, MongoDB, Redis) Knowledge of CI/CD pipelines and deployment processes Active use of AI coding tools (Copilot, Cursor, or similar) Experience in fintech or financial domain (complex financial instruments, calculations, reporting) Technologies you'll work with Java REST APIs / HTTP Microservices architecture SQL NoSQL PostgreSQL MongoDB Redis Frontend frameworks CI/CD AI coding tools Client – why choose this particular client from the Jit portfolio? Our client is an international financial services organization operating in the capital markets domain, focused on processing and analyzing large volumes of transactional data. The company develops modern data platforms that support trading, operational efficiency, and regulatory reporting. It operates in a fast-paced, highly regulated environment with a strong emphasis on scalability, data quality, and advanced analytics. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: B2B Java Backend Developer role in a greenfield fintech project focused on building a large-scale, event-driven banking platform from scratch. The position involves designing and developing backend services and APIs using Spring within a microservices architecture. You will shape core architecture decisions while working in a cross-functional, international team. 🗂️ Requirements: Minimum 3 years commercial experience in Java backend development, Hands-on experience with Spring Boot, Spring MVC or Spring Cloud, Experience with event-driven architecture and asynchronous processing, Experience with relational databases and PostgreSQL, Ability to design database schemas and write SQL queries, Fluent English (spoken and written) 📃 Skills: Java, Spring, SpringBoot, SpringMVC, SpringCloud, PostgreSQL, SQL, Microservices, EventDriven, Kafka, GCP, Kubernetes 🏢 Description: Salary: 600-900 PLN/MD on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Rzeszów / Kraków (3 days per week from the office) Why choose this offer? Opportunity to build a fintech platform from scratch (greenfield project) Real impact on architecture and core backend services from day one Work in an event-driven, microservices-oriented environment Collaboration within a cross-functional, international team Work on a large-scale financial platform in the banking domain Project We are building a fintech platform from the ground up for a financial institution operating in the banking products space . As a Java Developer, you will be part of a cross-functional squad responsible for designing, developing, and delivering backend services for this greenfield product. You will work closely with your Tech Lead, Senior Developer, Business Analyst, and QA Engineer within a mixed frontend-backend squad. This is a unique opportunity to shape the architecture and codebase of a large-scale financial platform from day one, working in an event-driven, microservices-oriented environment. Responsibilities you'll have: Design, develop, and maintain backend services and APIs for the fintech platform in greenfield project Implement business logic in Java using the Spring framework within an event-driven architecture Work with Postgres databases - design schemas, write queries, and ensure data integrity Collaborate within a cross-functional squad (Tech Lead, Senior Developer, BA, QA, Frontend Developers) to deliver product increments Participate in code reviews, technical discussions, and architectural decisions within the squad Write clean, testable, and well-documented code following team standards and best practices Contribute to continuous improvement of development processes and tooling Communicate progress, blockers, and technical decisions in English to team members and stakeholders Expected competences and knowledge: Min. 3 years of commercial experience in Java backend development (mid-level proficiency expected) Hands-on experience with the Spring framework (Spring Boot, Spring MVC, or Spring Cloud) Experience with event-driven architecture (message brokers, asynchronous processing, event sourcing or similar patterns) Working knowledge of Postgres or comparable relational databases (schema design, SQL, migrations) Fluent English - the ability to communicate freely in a professional setting (spoken and written) Nice to have: Experience with Kafka or similar distributed messaging/streaming platforms Familiarity with Google Cloud Platform (GCP) services Experience with Kubernetes (K8s) and containerized deployments Prior experience working in the financial services or banking domain Experience building systems from scratch (greenfield projects) Technologies you'll work with Java Spring (Spring Boot, Spring MVC, Spring Cloud) PostgreSQL Event-driven architecture Nice to have: Kafka GCP Kubernetes Client – why choose this particular client from the Jit portfolio? The client is a fintech institution operating in the Kingdom of Saudi Arabia, focused on modernising its digital capabilities and expanding its offering for micro-SME customers. It is an organisation with a strong market presence and a clear strategic commitment to innovation, aiming to deliver banking experiences that are fully digital, user-friendly, and deeply integrated with day-to-day business needs. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Senior Java Developer role in a greenfield fintech project focused on building a large-scale banking platform from scratch. The position involves designing and developing core backend microservices, shaping architecture, and contributing to technical decisions within a cross-functional agile team. The offer provides real impact on architecture and engineering standards in an event-driven, microservices-based environment. 🗂️ Requirements: Minimum 6 years of commercial software development experience, Strong hands-on experience with Java, Very good knowledge of Spring Boot, Spring MVC, Spring Cloud, Experience with event-driven architectures and asynchronous processing, Experience with microservices architecture, Practical experience with PostgreSQL or other relational databases, Understanding of frontend architecture and React concepts, Experience working in Agile/Scrum methodology, Fluent English, spoken and written 📃 Skills: Java, Spring, SpringBoot, SpringMVC, SpringCloud, Microservices, PostgreSQL, React, Kafka, GCP, Kubernetes, SQL, REST, Agile, Scrum 🏢 Description: Salary: 1000 - 1300 PLN/MD on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Rzeszów / Kraków (2 days per week from the office) Why choose this offer? Opportunity to build a fintech platform from scratch (greenfield project) Real impact on architecture and core frontend services from day one Collaboration within a cross-functional, international team Work on a large-scale financial platform in the banking domain Project We are building a new fintech platform from the ground up for a financial institution operating in the banking products space. As a Senior Java Developer , you will join a cross-functional squad (backend and frontend developers, QA, Business Analyst) and work on designing and developing core backend components. This is a greenfield initiative , where architecture, standards, and development patterns are defined from day one. Senior engineers play an active role in shaping technical direction and ensuring high code quality. You will work closely with Delivery Manager in an agile setup. Responsibilities you'll have: Design, develop, and maintain backend services using Java Build and evolve microservices based on the Spring ecosystem Work with event-driven and asynchronous communication patterns Collaborate closely with frontend and platform teams Actively participate in code reviews and ensure high engineering standards Contribute to architectural and technical decision-making Support and mentor less experienced developers Identify and address technical risks and bottlenecks Communicate technical topics effectively in English Expected competences and knowledge: Minimum 6 years of commercial experience in software development Strong hands-on expertise in Java Very good knowledge of Spring (Spring Boot, Spring MVC, Spring Cloud) Experience with event-driven architectures (message brokers, asynchronous processing, events) Practical experience with PostgreSQL or another relational database Experience working in microservices-based environments Understanding of frontend architecture and concepts , with particular focus on React (ability to collaborate efficiently with frontend developers, review high-level solutions, understand integration points and trade-offs) Familiarity with agile methodologies (Scrum / Agile) Fluent English (spoken and written) Nice to have: Experience with React Experience with Kafka or similar streaming platforms Familiarity with Google Cloud Platform (GCP) Experience with Kubernetes and containerized deployments Background in fintech or banking projects Previous work on greenfield systems Technologies you'll work with Java Spring (Boot, MVC, Cloud) PostgreSQL Event-driven architecture Microservices Nice to have: React Kafka GCP Kubernetes Client – why choose this particular client from the Jit portfolio? The client is a fintech institution operating in the Kingdom of Saudi Arabia, focused on modernising its digital capabilities and expanding its offering for micro-SME customers . It is an organisation with a strong market presence and a clear strategic commitment to innovation, aiming to deliver banking experiences that are fully digital, user-friendly, and deeply integrated with day-to-day business needs. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy. Wymagania Oczekujemy Oferujemy

🏢 Summary: Senior Java Backend Engineer role focused on building scalable, cloud-native identity and fraud prevention services on AWS. The position involves designing and developing high-performance Java microservices and APIs within a serverless and containerized architecture. You will contribute to CI/CD, automated testing, and production-grade systems supporting real-time identity verification and fraud detection at scale. 🗂️ Requirements: 5+ years backend development experience with Java, Strong experience with RESTful APIs using Spring Boot or similar frameworks, Hands-on experience with AWS, Experience with microservices or serverless architectures, Experience with CI/CD pipelines and continuous delivery, Experience with Docker, Experience writing unit, integration, and performance tests, Knowledge of relational or NoSQL databases, Proficiency with Git, Understanding of Agile methodologies, Proficiency in English 📃 Skills: Java, Spring, Micronaut, AWS, ECS, Lambda, API Gateway, Docker, CI/CD, REST, MongoDB, DynamoDB, DocumentDB, RDS, Git, Terraform, CloudFormation, CDK, gRPC, ProtocolBuffers, Golang, Python, Groovy, Bash, S3, SQS, KMS, EKS 🏢 Description: #4938 Our client builds a leading digital identity and fraud prevention platform used by banks, fintech companies, online marketplaces, and other regulated businesses worldwide. Their products combine biometric identity verification, document and image processing, and advanced fraud detection to help customers balance frictionless digital experiences with strong security and regulatory compliance. The company relies on AI, machine learning, and computer vision to power identity verification, mobile deposit, and liveness detection solutions used by thousands of organisations globally. About the role We are looking for a Senior Java Backend Engineer to join a cross-functional team building cloud-native identity and fraud prevention products on AWS. In this role, you will design and implement scalable, high-performance backend services and APIs in Java, working within a microservices and serverless architecture. You will collaborate closely with product managers, front-end engineers, researchers, and DevOps to deliver production-grade features that power real-time identity verification and fraud detection at scale. What will you do? Design, develop, deploy, and maintain production-ready backend APIs and microservices in Java, targeting AWS as the primary deployment platform. Build scalable, resilient services using serverless and containerised architectures (ECS, Lambda, API Gateway). Write clean, efficient, and testable code with strong emphasis on quality engineering and continuous delivery. Design and execute robust automated test suites including unit, integration, and performance tests. Collaborate with product managers, front-end engineers, QA, and cloud/operations teams to translate requirements into well-designed features. Contribute to CI/CD pipeline development and drive adoption of DevOps best practices for rapid and reliable deployments. Create and maintain internal software documentation and public API documentation. Participate in Agile ceremonies including stand-ups, sprint planning, refinements, and retrospectives. Mentor and support junior team members, sharing knowledge and elevating overall team capability. Required skills and experience 5+ years of professional backend software development experience with Java as the primary language. Strong experience designing and building RESTful APIs and backend services in Java using modern frameworks (Spring Boot, Micronaut, or similar). Proven experience developing and deploying solutions on Amazon Web Services (AWS). Hands-on experience with microservices and/or serverless architectures. Solid background in CI/CD pipelines, automated testing, and continuous delivery practices. Experience building and deploying Dockerised applications. Experience writing automated unit, integration, and performance tests for reliability at scale. Good understanding of relational and/or NoSQL databases (e.g. MongoDB, DynamoDB, DocumentDB, RDS). Strong communication skills and ability to collaborate effectively in a distributed, cross-functional environment. Solid understanding of Agile methodologies and practices. Proficiency with Git. Proficiency in spoken and written English. Nice to have Experience with Golang as an additional backend language. Familiarity with AWS services such as ECS, EKS, S3, Lambda, SQS, API Gateway, and KMS. Infrastructure-as-code experience with Terraform, CloudFormation, or AWS CDK. Experience with gRPC, Protocol Buffers, or image processing technologies. Exposure to machine learning concepts, architectures, or inference pipelines. Front-end exposure to React/Redux or other modern JavaScript frameworks. Programming experience in Python, Groovy, or Bash scripting. Previous work on SaaS products at scale in domains like digital identity, banking, or fintech. Experience delivering features from user stories through to deployment in Agile environments.

🏢 Summary: The offer is for a Senior Java Developer to build and maintain high-performance microservices for the InPost Pay e-commerce platform, serving millions of users across Europe. The role focuses on designing, implementing, and testing scalable backend services in a modern cloud-based environment. It involves ownership of technical solutions, system design, and continuous improvement within an Agile team. 🗂️ Requirements: 5+ years of experience in software engineering, Strong Java or Kotlin development experience, Experience with Spring Boot and JPA/Hibernate, Knowledge of SQL and NoSQL databases, Experience building microservices, Hands-on experience with Apache Kafka and REST APIs, Experience with Docker and Kubernetes, Experience with cloud platforms (GCP or equivalent), Knowledge of Maven or Gradle, Proficiency with Git and CI/CD pipelines, Experience working in Agile/Scrum, Ability to use AI tools (e.g. GitHub Copilot, ChatGPT) in development workflow, Good command of English 📃 Skills: Java, Kotlin, Spring, Hibernate, JPA, SQL, NoSQL, Kafka, REST, Docker, Kubernetes, GCP, Maven, Gradle, Git, CI/CD, JIRA, Confluence, Copilot, ChatGPT, Claude 🏢 Description: InPost Group is an innovative European out of home deliveries company, revolutionizing the way parcels are delivered to customers. With operations across several countries, our network of intelligent lockers provides customers with a fast, convenient, and secure delivery option. InPost Group is a publicly traded company, with a market capitalization of about $5 billion as of March 2023. With over 10,000 employees worldwide, InPost Group is one of the largest out of home delivery providers in Europe, committed to providing sustainable and efficient delivery solutions to meet the evolving needs of customers in today's rapidly changing landscape. About InPost Pay - a comprehensive e-commerce solution offering a unified platform for payment and delivery. InPost Pay allows users to pay and arrange delivery with one button on the product card, transferring the basket and order to the InPost app. It simplifies the shopping experience by consolidating payments, deliveries, and order tracking into a single app, eliminating the need for multiple emails and messages from different stores We  are currntly looking for Senior Java Developers to join our InPost Pay team responsible for delivering value to millions of customers in Poland and other European countries. This position offers an exciting opportunity to be part of a new and innovative project. Your responsibilities: Design, implementation and testing of high-performance microservices in Java using state-of-the-art methods and technologies. Have your share of ownership of incidents and issues tracking, as well as proposing improvements to the current applications. Advocate an engineering culture of quality , good development principles and innovation from inside your team. Contribute with the creation and maintenance of technical documentation , including System Design and RFC documents. Collaborate with testers and other peers , and be willing to mentor team members when necessary. Qualifications A solid foundation in software engineering (bachelors degree preferred) with 5+ years of experience. Java /Kotlin development experience including knowledge of common tooling such as Spring Boot and JPA/Hibernate, SQL/noSQL Knowledge of traditional software development processes and tools, including Maven/Gradle, Git, JIRA, Confluence, Code Reviews and CI/CD. Hands-on experience developing microservices using modern technologies such as Apache Kafka, REST APIs, containerization (Docker, Kubernetes), and cloud-based infrastructure (GCP or another). Experienced in taking ownership of tasks, commitments, quality, and contributing to a culture of continuous improvement in an Agile/Scrum environment. Good command of English Proficiency in leveraging AI tools and large language models (e.g., GitHub Copilot, ChatGPT, Claude) to enhance productivity, accelerate development, and solve complex problems. Ability to critically evaluate AI-generated outputs and apply them responsibly within professional workflows. Openness to working in a hybrid model from our Kraków or Warsaw office once a week is required Additional information Why Join InPost? Opportunity to work in a diverse , international , and cross-functional environment, along with leading experts . You work and learn from a senior leader and their leadership team, expanding your experience and exposure in the e-commerce and logistics industries. InPost is a growing company that offers its employees an increasing number of opportunities in several locations in Europe. Fulfilling careers with a range of benefits for employees and investing in providing training opportunities for their development. You will feel a part of the InPost community that makes an impact on sustainability, convenient deliveries, and the circular economy every day. Excellent working environment and flexible hours