Senior Software Engineer (Java)

🏢 Summary: Hybrid B2B role in a fintech environment focused on developing Java-based backend services and end-to-end features for financial reporting and cash flow calculations. The position involves working with microservices, APIs, frontend integrations, and AI coding tools in a fast-paced, ownership-driven team. Candidates will contribute across backend and frontend layers while supporting CI/CD processes and production releases. 🗂️ Requirements: 5+ years of backend or full-stack development experience, Strong Java proficiency, Experience with REST APIs and microservices, Experience with HTTP integrations, Basic experience with Angular, React, or similar frontend frameworks, Knowledge of PostgreSQL, MongoDB, and Redis, Understanding of CI/CD pipelines and deployment processes, Active usage of AI coding tools, Experience in fintech or financial domain 📃 Skills: Java, REST, Microservices, HTTP, Angular, React, PostgreSQL, MongoDB, Redis, CI/CD, Docker, Kubernetes, AWS, Azure, GCP, Copilot, Cursor 🏢 Description: Salary: 1000 - 1300 PLN/MD on B2B Work model: hybrid from Gdańsk (2 days per week from the office) Availability: ASAP / up to 30 days' notice period Why choose this offer? Work in a fintech environment on complex financial instruments and calculations End-to-end ownership – from backend logic to delivering complete features Broad tech exposure: backend, microservices , and frontend layers (Angular/React) Work culture focused on ownership, autonomy, and fast delivery Project You will work on a fintech solution focused on complex financial instruments and calculations . The team builds and maintains Java-based backend services and APIs supporting financial reporting, cash flow calculations, and monthly statements . The role involves end-to-end feature delivery , including occasional work on frontend layers (Angular or similar) , as well as integrations with third-party services . The project emphasizes accuracy, reliability , and the use of AI coding tools in daily development. Responsibilites you'll have: Design, develop, and maintain robust backend services and APIs in Java Deliver end-to-end features (e.g. financial reports, cash statements, calculations) Work across the stack - including frontend layers (Angular or similar) when needed Integrate systems with frontend applications and third-party services Participate in code reviews and ensure high code quality standards Support CI/CD pipelines and production releases Actively use AI coding tools (agentic coding, Copilot, Cursor) in daily workflow Expected competences and knowledge: At least 5 years of experience in backend or full-stack development Strong proficiency in Java Experience with REST APIs, microservices, and HTTP integrations Basic hands-on experience with frontend frameworks (Angular, React, or similar) Solid knowledge of databases (PostgreSQL, MongoDB, Redis) Understanding of CI/CD pipelines and deployment processes Active usage of AI coding tools (required) Experience in fintech / financial domain (highly preferred) Nice to have: Experience with microservices architecture Familiarity with cloud platforms (AWS, Azure, GCP) Experience with containerization (Docker, Kubernetes) Experience with automated testing Technologies you'll work with Java REST APIs & Microservices architecture Angular / React (basic functional usage) PostgreSQL / MongoDB / Redis CI/CD pipelines Docker / Kubernetes (nice-to-have) Cloud platforms: AWS / Azure / GCP (nice-to-have) 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 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Java Backend Developer role focused on building backend solutions while leveraging AI-assisted development tools and shaping AI-driven engineering practices. The position offers flexible hybrid work from Cracow and involvement in establishing AI-supported workflows across teams. Candidates will actively use tools like Codex and Claude and contribute to automation using MCP servers. 🗂️ Requirements: 3+ years of commercial software development experience, Experience with Java backend development, Fluent use of AI tools such as Codex and Claude, Experience setting up AI-assisted development processes, Ability to explain and use MCP servers for automation, Strong analytical and problem-solving skills, Ability to collaborate with cross-functional teams 📃 Skills: Java, Codex, Claude, MCP, AI, Backend 🏢 Description: Salary: 500 - 800 PLN/day on B2B Work model: elastic hybrid from Cracow (2 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis The Jit community will bring you a nice time during regular integration meetings Exposure to AI-assisted development Project We are looking for a Java Backend Developer who is passionate about modern software development and AI-assisted engineering. You will work on backend solutions while actively leveraging AI tools and helping shape the way AI is used across the software development lifecycle. Responsibilities you'll have Design, develop, and maintain backend applications using Java Use AI tools such as Codex and Claude as part of the daily development process Contribute to establishing and improving AI-assisted development practices Support the adoption of AI-driven workflows across engineering teams Collaborate with developers, testers, and analysts to improve productivity and software delivery processes Identify opportunities to automate work using AI tools, workflows, and MCP servers Share knowledge and best practices related to AI-assisted software development Expected competences and knowledge 3+ years of commercial software development experience Fluent work with AI tools such as Codex and Claude Experience in setting up AI-assisted development processes Ability to explain how MCP servers can automate work Strong analytical and problem-solving skills Excellent learning ability and curiosity about emerging technologies Good communication and collaboration skills Technologies you'll work with Java AI Agents (Codex, Claude) MCP Servers 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: Mid-level Frontend Developer role in a greenfield fintech project building a large-scale banking platform from scratch. You will design and develop web and mobile user interfaces using React, shaping frontend architecture and standards within a cross-functional international team. The position offers real impact on core frontend services and architectural decisions from day one. 🗂️ Requirements: Commercial experience in frontend development (mid-level), Hands-on experience with React, Experience building web applications, Understanding of modern frontend architecture, Ability to integrate frontend with REST APIs, Fluent English (spoken and written), Availability to work from office 3 days per week 📃 Skills: React, JavaScript, TypeScript, REST, GCP, Flutter, CI/CD, HTML, CSS 🏢 Description: Salary: 500-800 pln/md 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 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 fintech platform from the ground up for a financial institution operating in the banking products space. As a Frontend Developer, you will be part of a cross-functional squad responsible for designing and developing the user-facing layer of this greenfield product . You will work within a mixed frontend-backend squad, collaborating closely with your Tech Lead, Senior Developer, Business Analyst, and QA Engineer. This is a rare opportunity to define the frontend architecture, UI patterns, and user experience of a financial platform from scratch - covering both web and mobile channels. Responsibilities you'll have Design, develop, and maintain frontend applications across web and mobile channels Build responsive, performant, and accessible user interfaces using React Collaborate within a cross-functional squad (Tech Lead, Senior Developer, BA, QA, Backend Developers) Translate business requirements and UI/UX designs into clean, maintainable frontend code Integrate frontend applications with backend APIs and services Participate in code reviews, technical discussions, and architectural decisions Write clean, testable, and well-documented code following best practices Contribute to establishing frontend standards, component libraries, and development patterns Communicate progress, blockers, and technical decisions in English Expected competences and knowledge Solid commercial experience in frontend development (mid-level) Hands-on experience with React (web applications) Fluent English (spoken and written) Availability to work from the office 3 days per week (Warsaw, Kraków, Tricity, or Rzeszów) Understanding of modern frontend architecture and best practices Nice to have: Familiarity with Google Cloud Platform (GCP) Familiarity with Flutter Experience in financial services or banking domain Experience in greenfield projects Knowledge of state management patterns, design systems, and component-driven architecture Technologies you'll work with React REST APIs GCP (optional) Modern frontend tooling and libraries CI/CD pipelines 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: Full-stack role focused on building and maintaining scalable web and mobile applications using React/React Native on the frontend and Java-based backend services within a microservices architecture. The position involves end-to-end feature development, REST API design, and ensuring performance, security, and scalability in a production environment. You will contribute to CI/CD, deployments, and continuous platform improvements in a modern tech stack. 🗂️ Requirements: 6+ years full-stack development experience, Strong experience with React or React Native, Strong command of Java, Experience building REST APIs, Experience with HTTP protocols, Understanding of frontend architecture and state management, Experience with SQL and NoSQL databases (PostgreSQL, MongoDB, Redis), Knowledge of CI/CD pipelines and deployment processes, Experience with microservices architecture 📃 Skills: Java, React, ReactNative, Node.js, REST, HTTP, SQL, PostgreSQL, MongoDB, Redis, Microservices, CI/CD, AWS, Azure, GCP, Docker, Kubernetes 🏢 Description: Salary: 1000-1300 pln/md on B2B Work mode: Elastic hybrid from Gdynia/Gdańsk (1-2 days per week from the office) Why choose this offer? End‑to‑end ownership w ith a modern tech stack Stability combined with continuous growth Autonomy and high‑quality collaboration Project The project focuses on building and maintaining scalable web and mobile applications used by a large and diverse user base. It involves developing modern, user‑friendly interfaces with React or React Native and integrating them with robust backend services built in Java . The system is based on RESTful APIs and microservices architecture, ensuring high performance, security, and scalability. You will work closely with product, design, and QA teams to continuously improve the platform and deliver high‑quality features to production. Responsibilities you'll have Design and develop responsive web and mobile applications using React or React Native Build and maintain backend services and APIs using Java (preferred) or Node.js Develop reusable components, modules, and libraries Design and implement RESTful APIs and microservices Integrate front-end applications with backend systems and third-party services Ensure application performance, scalability, and security Collaborate with cross-functional teams including designers, product managers, and QA Participate in code reviews and maintain code quality standards Support deployment, CI/CD pipelines, and production releases Expected competences and knowledge Over 6 years of experience in full-stack development Good experience with React or React Native Strong command of Java Experience building REST APIs and working with HTTP protocols Understanding of frontend architecture, state management, and component-based design Solid level of SQL / NoSQL (Postgres, Mongo, Redis) Knowledge of CI/CD pipelines and deployment processes Strong problem-solving and analytical skills Good command of AI-powered coding and trust in AI Strong communication and collaboration skills Ability to work independently and within a team Attention to detail and commitment to quality Ability to manage multiple tasks and priorities Adaptability and willingness to learn new technologies Nice to have Experience with microservices architecture Familiarity with cloud platforms (AWS, Azure, or GCP) Experience with containerization (Docker, Kubernetes) Knowledge of testing frameworks and automated testing Experience with mobile app deployment (App Store / Google Play) Technologies you'll work with Java React React Native REST APIs HTTP SQL (PostgreSQL) NoSQL (MongoDB, Redis) Node.js Microservices CI/CD pipelines AWS/Azure/GCP Docker Kubernetes App Store/Google Play AI 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: Senior/Expert Java Developer role in an international SaaS project focused on building new AI-driven functionality and modernizing backend systems. The position involves technical ownership, architecture design, and development of scalable microservices-based solutions in a hybrid work model. Candidates will work with Java, Spring Boot, AI technologies, and Microsoft Foundry in a dynamic consultancy environment. 🗂️ Requirements: 8+ years of experience as a Java Developer, Strong knowledge of Java stack, Experience with CI/CD, Experience with Docker, Experience with microservices, Experience building end-to-end solutions, Commercial experience with AI tools, Experience with Microsoft Foundry, Ability to design scalable and maintainable systems, Experience in software house or consultancy environment, Strong understanding of backend architectures, Knowledge of backend development best practices, Strong technical skills, Strong communication skills, Ability to work on multiple projects simultaneously 📃 Skills: Java, Spring, SpringBoot, SQL, Docker, Microservices, CICD, MicrosoftFoundry, AI, Cloud 🏢 Description: Salary: Senior 1000–1300 PLN net / MD Expert/Leader 1300-1600 PLN net / MD (if your financial expectations are higher and justified by your experience, please let us know - we are open to discussing it) Work model: Kraków / Gdańsk  / Warsaw - hybrid work model (2 days per week from the office) Start date: As soon as possible. We can wait up to 1 month if required due to a notice period. Why choose this offer? Real influence on technical decisions and system architecture Dynamic, project-driven environment with diverse challenges Developing new AI-based functionality Project International project focused on building new AI-driven functionality within a modern SaaS platform. This role offers the opportunity to take technical ownership, shape architecture decisions, and contribute to the development of innovative solutions leveraging modern AI technologies, including Microsoft Foundry . Responsibilities you'll have Take technical ownership of the project Design and architect end-to-end backend systems and solutions Supervise and ensure technical quality across projects Support project estimations, including effort, budget, and cost calculations Create and maintain technical designs and documentation Collaborate closely with delivery and business stakeholders Adapt to different client environments, expectations, and technical stacks Work on several projects simultaneously — multitasking is essential Expected competences and knowledge 8+ years of experience as a Java Developer Solid knowledge of the Java stack Solid familiarity with CI/CD , experience working with Docker and microservices Experience in building end-to-end solutions Commercial experience with AI tools Experience with Microsoft Foundry Strong technical and soft skills Proven ability to design scalable and maintainable systems Experience working in a software house / consultancy environment Very good understanding of backend architectures and development best practices Nice to have Experience with cloud platforms (from a developer perspective) Knowledge of modern infrastructure and deployment approaches Technologies you'll work with Java Spring Boot SQL Microsoft Foundry Docker Microservices CI/CD Cloud platforms Client – why choose this particular client from the Jit portfolio? Our client is a leading European SaaS provider specializing in cloud-based solutions for the insurance and pension sector. The cooperation focuses on platform modernization and the development of new AI-based functionality , combining modern technologies with real business impact. 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 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Backend Engineer role focused on building scalable backend systems, APIs, and data processing solutions for a global developer platform used by millions of users. The position involves working with distributed systems and large datasets in an international environment, with initial on-site work in Malmö followed by relocation to Sweden. Offers competitive B2B rates and the opportunity to contribute end-to-end from architecture discussions to production deployment. 🗂️ Requirements: Commercial experience in backend development, Strong knowledge of Java, Strong knowledge of Scala, Experience with Apache Spark, Experience with distributed systems, Experience building and maintaining APIs, Ability to design scalable backend architectures, Experience with data processing pipelines, Experience with CI/CD processes, Ability to work on-site in Malmö and relocate to Sweden 📃 Skills: Java, Scala, Spark, Apache, DistributedSystems, APIs, CI/CD, Backend, DataProcessing 🏢 Description: Salary: Mid Developer : up to 1120 PLN/MD on B2B Senior Developer : up to 1500 PLN/MD on B2B Work model: hybrid , for the first 3-4 months required 3 days/week on-site in Malmö (Sweden), with travel and accommodation covered by the company, followed by relocation to Sweden with a requirement to work 3-5 days per week from the office, along with a rate evaluation after relocation. Why choose this offer? Opportunity to work on global-scale products used by millions of users worldwide Collaboration within international, cross-functional teams Exposure to modern backend technologies (Scala, Java, Spark) Chance to build scalable APIs and developer-facing tools Impact on end-to-end feature development – from concept to production Work in an environment that values ownership, independence, and collaboration Project You will join a team working on a developer platform powering advanced digital products and services. The role focuses on building scalable backend solutions, APIs, and tools that support large-scale applications and external developers. As a Backend Engineer, you will contribute to designing and implementing distributed systems, processing large datasets, and enabling seamless integration between services. You will collaborate closely with engineering, data, and product teams to deliver high-quality solutions used in a global ecosystem. The role combines hands-on development with active participation in architecture discussions , problem-solving , and cross-team collaboration . Responsibilities you'll have: Design, develop and maintain scalable backend systems and services Build and optimize data processing pipelines using tools such as Apache Spark Develop and maintain APIs and backend components for developer-facing platforms Translate business and technical requirements into robust, high-quality code Collaborate with cross-functional and international teams (engineering, product, data) Participate in architecture discussions and propose improvements to system design Ensure performance, reliability, and scalability of delivered solutions Contribute to code reviews, testing, and CI/CD processes Work both independently and collaboratively to solve complex technical problems Technologies you'll work with Java Scala Apache Spark GIS/Mapping Technologies Distributed systems & data processing API design & backend architecture Client – why choose this particular client from the Jit portfolio? Our client is a leading multinational technology organization with a strong international presence. Serving customers worldwide, it offers a broad range of consumer electronics, software, and digital solutions aimed at enhancing user experience and connectivity. The organization is renowned for its innovative approach and its ability to create a seamless ecosystem that integrates its products and services. 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 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Senior Java Developer role focused on developing and modernizing Java-based backend systems for pension and savings products within a financial environment. The position involves upgrading applications to Java 17+ and Spring Boot 3, building scalable and compliant financial solutions, and implementing complex integrations and calculation engines. Work includes full SDLC participation in an international, hybrid setting. 🗂️ Requirements: Strong proficiency in Java, Experience with Spring framework, Experience with Hibernate, Experience with relational databases, Advanced SQL knowledge, Experience with PostgreSQL, Experience with OpenAPI, Experience with AsyncAPI, Experience with Git, Experience with CI/CD pipelines, Knowledge of software design patterns, Understanding of object-oriented programming, Experience upgrading to Java 17+, Experience with Spring Boot 3.x 📃 Skills: Java, Spring, SpringBoot, Hibernate, PostgreSQL, SQL, OpenAPI, AsyncAPI, Git, CICD, JMS, MQ 🏢 Description: Salary: 1100-1300 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa (3 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project The project focuses on the development and enhancement of Java-based backend applications supporting pension and savings products. The Senior Java Developer will be responsible for building and improving solutions related to taxation, account management, and investment processing . The role involves working on scalable, secure financial systems that ensure high reliability and regulatory compliance. Responsibilities you'll have Support the upgrade of existing applications to Java 17 (at least) and Spring Boot 3.3.x, contributing experience from similar modernization initiatives Design, develop, and maintain high-quality Java applications supporting savings and investment products Build robust calculation engines that ensure compliance with current tax regulations across multiple countries Implement solutions for complex business processes, including integrations with tax authorities and generation of customer-facing reports Participate in the full software development lifecycle including requirements analysis, design, coding, testing, and deployment Collaborate with financial analysts to translate requirements into technical solutions Expected competences and knowledge Strong proficiency in Java and related frameworks (Spring, Hibernate, etc.) Experience with relational databases and SQL (PostgreSQL, etc.) Knowledge of OpenAPI and AsyncAPI for producing and consuming data Familiarity with version control systems (Git) and CI/CD pipelines Understanding of software design patterns and object-oriented programming principles Technologies you'll work with Java 17, 21 Spring Boot Hibernate Postgres SQL Messaging protocols (e.g. JMS, MQ) SQL OpenAPI AsyncAPI Git CI/CD Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. 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 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to 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 Frontend Developer with strong .NET background to design and build a financial web application (Economic Profitability Calculator) in an Agile environment. The role focuses on Angular-based frontend development with backend support in .NET, ensuring high code quality and CI/CD automation. Hybrid work model with close collaboration with Product Owner and domain experts. 🗂️ Requirements: 8+ years of experience with Angular, 5+ years of experience in web development (HTML, JavaScript, TypeScript, CSS), 3+ years of experience in .NET and C# web development, 3+ years of experience with SQL, 2+ years of experience with Docker and Kubernetes, Experience with CI/CD process automation, Experience working in Agile environment, English proficiency minimum B2 level 📃 Skills: Angular, TypeScript, HTML, JavaScript, CSS, .NET, C#, SQL, Docker, Kubernetes, MSSQL, Dapper, Git, JIRA, Bamboo, Confluence, Bitbucket 🏢 Description: Salary: 900 - 1200 PLN/day on B2B Work model: elastic hybrid from Gdynia / Gdańsk (at least 2 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project We are looking for a passionate developer with a strong focus on frontend development and a background in .NET to join the Economic Profitability Calculator Team of our financial sector client. You will play a valuable role in designing and building an EPC web application, working closely with Subject Matter Experts and having a real influence on the product. Responsibilities you'll have Designing and implementing EPC business processes with a strong focus on the frontend part Ensuring code quality through high test automation coverage, code reviews, and pair programming Working in an Agile setup Cooperating closely with the Product Owner and Subject Matter Experts Maintaining and extending CI/CD process automation Expected competences and knowledge 8+ years of experience with Angular 5+ years of experience in web development ( HTML, JavaScript, TypeScript, CSS ) 3+ years of experience in .NET and C# web development 3+ years of experience with SQL 2+ years of experience with Docker and Kubernetes Technology enthusiast focused on high product quality and good UX Passion for frontend development with experience in backend development Team-player mindset Willingness to continuously improve competences Good communication skills, including communication in English (min. B2 level) Nice to have Experience with UI test automation Experience with CI/CD tools (Bamboo) Experience using an AI coding assistant Technologies you'll work with Angular TypeScript HTML JavaScript CSS .NET C# Docker Kubernetes MS SQL Server Dapper Git Atlassian Stack (JIRA, Bamboo, Confluence, Bitbucket) Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. 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.