Senior Java Engineer (m/f/n)

🏢 Summary: Senior Full-stack Software Engineer role focused on building scalable, reliable logistics solutions using Java/Spring microservices and Angular frontend. The position involves end-to-end feature development, cloud-native deployments, CI/CD ownership, and optimization of data stores supporting logistics workflows. The role also includes production support, AI-assisted development, and collaboration within an Agile environment. 🗂️ Requirements: 4+ years experience in full-stack software development, Experience working in Agile/Scrum methodologies, Strong knowledge of Java and Spring framework, Experience with Angular frontend development, Practical experience with Docker and Kubernetes, Experience with CI/CD tools and automation practices, Knowledge of relational and NoSQL databases, Experience with PostgreSQL, ElasticSearch, and Redis, Understanding of cloud-native application development, Professional English (B2+) 📃 Skills: Java, Spring, Angular, Hibernate, Docker, Kubernetes, Kafka, PostgreSQL, ElasticSearch, Redis, GCP, CI/CD, Microservices, Git, Copilot, ChatGPT, Claude 🏢 Description: InPost has revolutionised e-commerce parcel delivery in Poland and is now one of Europe’s leading OOH e-commerce enablement platforms. Founded in 1999 by Rafał Brzoska, InPost provides delivery services through our network of almost 47,000 Automated Parcel Machines (APMs) and almost 35,000 pick-up drop-off points (PUDO) in nine countries across Europe, as well as to-door courier and fulfilment services to e-commerce merchants. InPost’s lockers provide consumers with a cheaper and more flexible, convenient, environmentally friendly and contactless delivery option. Join InPost Group as a (Senior) Full-stack Software Engineer for the InPost Logistics Network team! We are on a mission to create scalable and reliable software solutions for logistic operations, connecting businesses, markets, and consumers to deliver the most trusted customer experience for parcel delivery. Your responsibilities: Design, develop, and test full-stack features - Java/Spring microservices on the backend, Angular on the frontend - ensuring high performance and reliability (working with maps, geocoding APIs, administrative structures in multiple coutries) Own and evolve CI/CD pipelines, containerized deployments (Docker, Kubernetes), and cloud-native infrastructure (GCP) supporting your team's services Maintain and optimize relational and NoSQL data stores (PostgreSQL, ElasticSearch, Redis) powering logistics workflows Respond to and resolve production incidents; contribute to post-mortem analysis and follow-up improvements Leverage AI-assisted development tools (Copilot, Claude, etc.) to accelerate delivery while critically evaluating generated outputs Collaborate with Tech Leaders, Architects, Product Owners, and UX designers to translate business requirements into well-engineered solutions Actively participate in Scrum ceremonies and contribute to continuous improvement of team practices Qualifications: 4+ years of experience in a similar position and working in Agile methodologies. Understanding of technology, market trends, and standards in software development. Practical knowledge of Java, Angular, Spring, Hibernate, Docker, Kubernetes, Kafka. Understanding of the need to automate the software delivery process and practical experience of CI/CD tools and practices. Good knowledge of relational and NoSQL databases, such as PostgreSQL, ElasticSearch, and Redis. Hands-on experience in developing cloud-native applications will be highly beneficial. Familiarity with mobile app products will be an asset. English language skills at a professional level (minimum B2+). Independence, proactivity, organization of your work. Having a consumer-centric mindset. 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. Why 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 her leadership bench, extending your experience and exposure in the e-commerce and logistic industry. 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 circular economy every day. You will have the opportunity to get involved in developing the company's own product.

🏢 Summary: Engineering Manager role leading a backend team to deliver greenfield and large-scale e-commerce logistics systems from concept to production. The position combines hands-on technical leadership with people and delivery management, driving architecture decisions and modern engineering practices. The role also leverages AI tools to enhance development efficiency and product outcomes. 🗂️ Requirements: 6+ years of software development experience, 2+ years of people leadership experience, 2+ years of project or delivery management experience, Bachelor’s degree in Computer Science, Software Engineering, IT or related field, Strong experience in at least one backend stack (Java, Python or Node.js), Experience with system design and software architecture, Experience with modern engineering best practices, Proficiency in using AI tools and large language models in development workflows, Ability to evaluate and apply AI-generated outputs responsibly, English proficiency at B2 level or higher 📃 Skills: Java, Python, Node.js, SystemDesign, Architecture, AWS, Azure, GCP, DevOps, CICD, GitHubCopilot, ChatGPT, Claude, LLMs 🏢 Description: InPost has revolutionised e-commerce parcel delivery in Poland and is now one of Europe’s leading OOH e-commerce enablement platforms. Founded in 1999 by Rafał Brzoska, InPost provides delivery services through our network of almost 47,000 Automated Parcel Machines (APMs) and almost 35,000 pick-up drop-off points (PUDO) in nine countries across Europe, as well as to-door courier and fulfilment services to e-commerce merchants. InPost’s lockers provide consumers with a cheaper and more flexible, convenient, environmentally friendly and contactless delivery option. Your responsibilities: Lead, mentor, and grow a team of engineers, supporting performance and career development. Drive greenfield initiatives and large-scale projects from concept to production. Take ownership of new topics started from scratch and navigate ambiguity. Ensure timely, high-quality delivery through effective planning and execution. Provide technical leadership in architecture and engineering best practices. Partner closely with Product Managers and stakeholders to align priorities and outcomes. Support the team through leadership and organizational change. Continuously improve and standardize development processes. Communicate progress, risks, and dependencies clearly to stakeholders. Must have: 6+ years of experience in software development. 2+ years of experience in people leadership. 2+ years of experience in project or delivery management. Very good command of English (B2+) in speech and writing. Bachelor’s degree in Computer Science, Software Engineering, IT, Electrical/Computer Engineering, or a related field. Strong technical background in at least one major backend stack (e.g., Java, Python, Node.js) Experience with system design and modern engineering practices. Proven ability to lead change and build teams in evolving environments. Product mindset with end-to-end ownership. Excellent communication and organizational skills. 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. Nice to have: Cloud certifications (AWS, Azure, GCP). Scrum Master or Product Owner certification. Experience with DevOps practices and CI/CD. Exposure to security, compliance, or enterprise environments. Why 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 her leadership bench, extending your experience and exposure in the e-commerce and logistic industry. 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 circular economy every day. You will have the opportunity to get involved in developing the company's own product.

🏢 Summary: Role for an experienced Android Developer to build and scale high-quality native mobile applications across European markets, focusing on performance, architecture, and user experience. The position involves developing and optimizing Android apps using modern frameworks, integrating backend services, and contributing to architectural decisions in an Agile environment. 🗂️ Requirements: 5+ years of Android development experience, Expert knowledge of Android SDK and Android OS versions, Strong knowledge of Android UI design principles and guidelines, Experience with MVVM and Clean Architecture, Experience with Jetpack libraries and Architecture Components, Experience with Kotlin and Java, Experience with Jetpack Compose, Experience with Coroutines, Experience with Firebase integration, Experience with REST API integration, Experience with Git and CI/CD pipelines, Experience working in Agile environment, English proficiency at minimum B2 level, Ability to use AI development tools and evaluate their output critically 📃 Skills: Android, Kotlin, Java, AndroidSDK, MVVM, CleanArchitecture, Jetpack, Compose, Coroutines, Firebase, REST, Git, CI/CD, JIRA, Confluence, Copilot, ChatGPT, Claude 🏢 Description: Job Description At InPost, we're passionate about building software that helps our customers send and receive their goods. Our Consumer-Facing teams build and maintain web applications and enabling platforms, which provide features such as marketing communication, loyalty programs, and payments. We have built one of the most well-recognized and appreciated mobile applications in Poland's Logistics sector, with 11+ million users , and we are not stopping there. Our next step is conquering the international European market and scaling our Mobile platform and applications across Europe . We are looking for an experienced Android Developer to join us in that journey - to heavily influence our platform build, improve processes, and help us deliver the best native app experience in the market. Responsibilities: Develop and maintain high-quality Android applications using Kotlin and Java, ensuring performance, stability, and great user experience. Build scalable, maintainable solutions using MVVM, Clean Architecture, Jetpack Compose, and Coroutines . Integrate Android apps with backend APIs, Firebase , and other third-party services. Refactor and optimize existing code to improve quality, performance, and long-term maintainability. Actively participate in code reviews , technical discussions, and architectural decisions. Collaborate with cross-functional teams to translate business requirements into technical solutions . Work in an Agile environment , using tools such as Git, CI/CD pipelines, and issue-tracking systems.CI/CD pipelines, and issue-tr Create and maintain clear technical documentation . Use AI tools to improve development efficiency while applying critical judgment and best practices. Qualifications 5+ years of experience in Android development. Expert knowledge of Android SDK and different versions of Android, along with device configurations. Strong knowledge of Google's Android UI design principles, patterns, best practices, and interface guidelines. Experience with Android Architecture components, Jetpack libraries , MVVM and Clean Architecture . Experience with optimizing mobile apps in Java and Kotlin. Experience with Compose and Coroutines . Experience with Firebase configuration. Experience working with API interfaces to integrate data and functionality in mobile applications. Ability to solve problems and propose own solutions to solve them. Ability to understand business requirements and translate them into technical requirements. Attention to detail and a strong focus on solution delivery . Professional and proactive approach to tasks assigned Knowledge of traditional software development processes and tools, including Git, JIRA, Confluence, Code Reviews, and CI/CD. English language skills at a professional level (minimum B2). 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. What do we offer? Remote work opportunity across Poland. Access to e-learning platforms- eTutor , Udemy , GoodHabitz , and more. Two development paths : becoming a Tech Expert or an Engineering Manager. A wide range of benefits, including the MultiSport+ card, private healthcare , and group insurance , is available on the Worksmile platform. External and internal growth opportunities - conferences , trainings , workshops . Chances to broaden your skill set and acquire new competencies through daily work, challenging projects, and training activities.

🏢 Summary: Senior Android Developer role focused on building, scaling, and maintaining high‑quality native Android applications for a large‑scale mobile platform used across Europe. The position involves developing scalable, testable solutions, improving architecture, and integrating mobile apps with backend services and third‑party tools. The role also emphasizes modern Android frameworks, clean architecture practices, and AI‑assisted development workflows. 🗂️ Requirements: 5+ years of Android development experience, Expert knowledge of Android SDK and platform versions, Strong experience with Kotlin and Java, Hands-on experience with Jetpack, Compose, Coroutines, MVVM, Clean Architecture, Experience with Firebase and REST API integrations, Experience with automated testing and writing test-covered code, Knowledge of Git and CI/CD workflows, Professional English (minimum B2), Ability to use AI development tools in professional workflows 📃 Skills: Android, Kotlin, Java, Jetpack, Compose, Coroutines, MVVM, CleanArchitecture, Firebase, REST, Git, CI/CD, JIRA, Confluence, Copilot, ChatGPT, Claude 🏢 Description: Job Description At InPost, we have built one of the most well-recognised and appreciated mobile applications in the European Logistics sector, with 11+ million users, and we are not stopping there. Our next step is conquering the international European market and scaling our Mobile platform and applications across Europe. We are looking for experienced Android developers to join us in that journey - to heavily influence our platform build, improve processes, and help us deliver the best native app experience in the market. Responsibilities Design, develop, and maintain high‑quality Android applications using Kotlin and Java, ensuring compatibility across multiple Android versions and device configurations. Ensure the performance, quality, reliability, and responsiveness of mobile applications throughout the development lifecycle. Build scalable and maintainable solutions using Android Architecture Components, Jetpack libraries, Compose , Coroutines , MVVM , and Clean Architecture. Refactor existing codebases to improve design, performance, readability, and long‑term maintainability. Develop test‑covered, high‑quality code, contributing to automated testing strategies and ensuring robust, production‑ready solutions. Integrate applications with backend APIs, third‑party services, and Firebase to support data exchange, analytics, and application monitoring. Work closely with product managers, designers, QA engineers, and backend developers to translate business requirements into technical solutions. Leverage AI‑powered development tools (e.g., GitHub Copilot, ChatGPT, Claude) to accelerate development while critically evaluating and responsibly applying AI‑generated outputs. Qualifications 5+ years of experience in Android development with expert knowledge of the Android SDK , platform versions, and device configurations. Strong understanding of Android UI/UX design principles and best practices. Hands‑on experience with Jetpack , Compose , Coroutines , MVVM , and Clean Architecture . Proven ability to build and optimize Android applications using Kotlin and Java . Experience with Firebase and API integrations . Strong problem‑solving skills with the ability to translate business needs into technical solutions . Detail‑oriented, delivery‑focused, and proactive in ownership of tasks. Familiarity with modern development workflows and tools, including Git, JIRA, Confluence, code reviews, and CI/CD . English language skills at a professional level (minimum B2). 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. What we offer? Remote work opportunity across Poland. Access to e-learning platforms- eTutor , GoodHabitz , Data Camp, and more. Two development paths : becoming a Tech Expert or an Engineering Manager. A wide range of benefits, including the MultiSport+ card, private healthcare , and group insurance , is available on the Worksmile platform. External and internal growth opportunities - conferences , trainings , workshops . Chances to broaden your skill set and acquire new competencies through daily work, challenging projects, and training activities.

🏢 Summary: Backend Java Developer role focused on building secure, reliable, and scalable backend services for a national digital identity platform. The position involves Java-based development, applied cryptography, high availability, and continuous improvement of mission-critical systems. You will design, maintain, and enhance backend components within a Scrum team ensuring secure and stable deployments. 🗂️ Requirements: Experience developing enterprise IT systems and complex backend solutions, Strong hands-on experience with Java, Strong hands-on experience with Spring Boot, Strong hands-on experience with Hibernate, Experience with containerized environments, Understanding of cryptographic concepts, Experience with security-related systems, Experience with relational databases, Experience with CI/CD tools, Experience with automated testing, Strong knowledge of REST APIs, Understanding of backend architecture principles, Familiarity with DevOps practices, Proficiency in English 📃 Skills: Java, Spring, Hibernate, OpenShift, Oracle, Jenkins, JUnit, REST, CI/CD, DevOps, Jira, Confluence, Cryptography, SQL 🏢 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: Senior Backend Engineer role focused on building secure backend systems to ensure fiscal compliance of POS products across multiple European markets. The position involves designing and implementing integrations for receipt fiscalization and regulatory reporting within a distributed, cross-functional environment. The role supports international expansion by developing scalable, fault-tolerant backend solutions. 🗂️ Requirements: 5+ years of backend engineering experience, Strong proficiency in Java and/or Kotlin, Solid understanding of system architecture and design principles, Experience with data modeling and API design, Experience building distributed and fault-tolerant systems, Hands-on experience with AWS, Hands-on experience with Kubernetes, Knowledge of Kafka, Knowledge of Postgres, Understanding of CQRS 📃 Skills: Java, Kotlin, AWS, Kubernetes, Kafka, Postgres, CQRS, APIs, Microservices, DistributedSystems 🏢 Description: About the team SumUp’s Point-of-Sale (POS) solution empowers cafes, shops, bars, hair salons, and other businesses to operate efficiently and grow. It offers a wide range of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools. Our Fiscalization team will accelerate making the following countries fiscally compliant: Italy, Sweden, Norway, Belgium, Austria, and many other European countries. They will also start building the path for integrating with third parties and fiscalizing receipts. As a Senior Backend Engineer , you’ll collaborate with a dynamic, cross-functional team of Product Managers, Product Designers, Engineering Managers, and fellow engineers. About the role You will be working on secure backend systems to ensure our SumUp’s Point of Sale (POS) products are compliant in the different countries in our roadmap. Furthermore, you will work with the Fiscalization squad to understand the challenge in each market to design a unique solution to delivery. You’re a developer who values user-centric design, precision, and seamless collaboration. You bring structure to communication and thrive in a cross-functional environment. This will be B2B role for our team in Warsaw. What you’ll do Build and maintain fiscal compliance solutions to enable SumUp's expansion across Italy, Sweden, Norway, Belgium, Austria, and other European markets. Develop integrations with third-party services for receipt fiscalization and regulatory reporting systems. Navigate SumUp's complex POS ecosystem and master fiscalization frameworks across multiple jurisdictions. Collaborate with distributed squad members and stakeholders across 5+ cities in a hybrid environment. You’ll thrive in this role if: You have 5+ years experience in backend engineering with Java and/or Kotlin. You have a strong understanding of fundamental system architecture, design principles, data modeling, and API design. You have a strong experience with distributed and fault-tolerant systems. You have user-level experience working with AWS and Kubernetes. You have good knowledge of Kafka, Postgres, & CQRS. Why You Should Join SumUp (Warsaw) 🇵🇱 🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced 🚀 Enrolment onto our VSOP program: you will own a stake in SumUp’s future success 🚴 Fitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to sports facilities across Warsaw 🩺 Commitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your peace of mind 💰 PPK (Employee Capital Plan): grow your savings with joint contributions from SumUp and the State. 🏖️ Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

🏢 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: 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: Senior Android Developer role focused on building and scaling a Kotlin-based POS mobile application within a SuperApp, contributing to a Kotlin Multiplatform strategy across Android and iOS. The position involves developing new features, improving app architecture, and ensuring high-quality, scalable solutions used globally. The role requires strong expertise in Android development, modern architectures, and testing practices. 🗂️ Requirements: 8+ years of experience in Android mobile development, Strong proficiency in Kotlin, Minimum 2 years of experience with Jetpack Compose, Experience with Kotlin Multiplatform, Knowledge of software design patterns (MVVM or MVI), Experience building modular and scalable app architectures, Experience with reactive programming using Flow and Coroutines, Strong knowledge of testing best practices and writing automated tests 📃 Skills: Kotlin, Android, Jetpack, Compose, KMP, MVVM, MVI, Flow, Coroutines, Concurrency, Testing 🏢 Description: About the team SumUp’s Point-of-Sale (POS) solution empowers cafes, shops, bars, hair salons, and other businesses to operate efficiently and grow. It offers a wide range of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools. Our POS solution integrates seamlessly into the SumUp SuperApp, which supports both our proprietary register hardware and mobile devices like tablets and phones. As a Senior Android Developer , you’ll collaborate with a dynamic, cross-functional team of Product Managers, Product Designers, Engineering Managers, and fellow engineers. About the role We’re evolving toward a Kotlin Multiplatform (KMP) strategy, enabling shared development across Android and iOS. In this role, you’ll learn, refine, and help implement this technology, shaping the future of our mobile apps. You’re a developer who values user-centric design, precision, and seamless collaboration. You bring structure to communication and thrive in a cross-functional environment. This role will be a B2B based role in Warsaw. What you’ll do Build new features for the item catalog within the SumUp SuperApp Help improve the architecture of the application and contribute to our Kotlin Multiplatform strategy Enhance and maintain our unified android app, distributed across 60+ countries, ensuring high-quality, scalable solutions Shape the product’s evolution by identifying opportunities for improvement and contributing to daily decision-making Write thorough documentation and implement robust testing for features before shipping Collaborate closely with Designer, Product Manager and Android engineers to deliver a unified UX experience across platforms You’ll thrive in this role if: You have 8** + years experience in mobile engineering with Android and Kotlin.** You have 2+ years of experience working with Jetpack Compose. You have a solid understanding of software design patterns (e.g., MVVM, MVI) and expertise in building modular, scalable app architectures. You have good knowledge of reactive programming (Flow, Coroutines and Concurrency). You have a strong grasp of testing best practices: knowing what to test, why, and how to write resilient tests. You strive for clean code, and you are flexible to balance pragmatism and perfection. You have a keen interest in multi-platform development using Kotlin Multiplatform. Why You Should Join SumUp (Warsaw) 🇵🇱 🌎 Opportunity to work , from our vibrant Warsaw office with inspiring art-filled lounges and a skyline terrace in the Mennica Legacy Tower. 🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced 🚀 Enrolment onto our VSOP program: you will own a stake in SumUp’s future success 🚴 Fitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to sports facilities across Warsaw 🩺 Commitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your peace of mind 💰 PPK (Employee Capital Plan): grow your savings with joint contributions from SumUp and the State. 🏖️ Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.