Senior Full-stack Developer

🏢 Summary: Backend Java Developer role in a financial project modernizing corporate digital banking and building a new online banking platform. The position focuses on developing APIs and backend services within microservice and monolithic architectures using DDD and reactive programming. Work involves delivering scalable, resilient banking solutions in an Agile international environment. 🗂️ Requirements: 6+ years of commercial experience in Java development, Experience building REST APIs, Experience with microservices architecture, Practical knowledge of Spring and Hibernate, Strong SQL knowledge, Experience with reactive programming, Understanding of distributed systems, Knowledge of SOLID principles and design patterns, Understanding of DDD and Port-Adapter architecture, Experience with Git, Experience with Cucumber, Experience working in Agile or SAFe, English proficiency for daily communication 📃 Skills: Java, Spring, SpringBoot, Hibernate, SQL, REST, Microservices, Reactor, WebFlux, Git, Cucumber, DDD, SAFe, Angular, Jasmine 🏢 Description: Salary: 1000-1200 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (2-3 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 You will be involved in a financial project focused on modernizing corporate digital banking services and building a new online banking platform for corporate customers . The project aims to replace a legacy corporate netbanking system with a modern digital channel that improves payments, account management, liquidity overview, employee administration, and permissions management . The environment includes both microservice and monolithic architectures , with a strong focus on API development, Domain-Driven Design (DDD), reactive programming, and resilient system architecture . Responsibilities you'll have Developing and enhancing backend services and APIs for corporate banking solutions Building new features that modernize banking services related to accounts, payments, file transfers, and international/local financial services Maintaining and improving systems within microservice and monolithic architectures Collaborating with developers, product owners, architects, analysts, and QA teams to deliver business solutions Implementing scalable and resilient solutions using DDD, port-adapter architecture, and reactive programming Supporting maintenance, compliance, and continuous improvement of essential banking services Expected competences and knowledge Strong hands-on experience in Java development (preferably 6+ years) Experience in building API solutions and working with REST services Familiarity with reactive programming and distributed systems Practical knowledge of Spring, Hibernate, SQL, Microservices, Git, and Cucumber Understanding of SOLID principles, design patterns, and clean architecture concepts (DDD / Port-Adapter) Experience working in Agile/SAFe environments and strong English communication skills Technologies you'll work with Java Spring Framework / Spring Boot Hibernate SQL REST APIs & Microservices Reactive Programming (e.g., Reactor/WebFlux) Git Cucumber Angular (basic frontend exposure, nice to have) Jasmine (nice to have) 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: Backend Developer role focused on maintaining and enhancing an existing Java-based system, ensuring stability and working with a legacy codebase in an Agile environment. The position involves designing backend services, developing REST APIs, and supporting ongoing system maintenance. Hybrid work model with collaboration in international teams. 🗂️ Requirements: Experience with Java 7/8, Experience with Maven, Experience designing backend services, Experience developing REST APIs, Ability to write unit tests, Experience working with legacy codebase, Experience working in Agile environment, Fluency in English, Experience with version control systems 📃 Skills: Java, Maven, JSP, Git, REST, Agile, UnitTesting 🏢 Description: Salary: 1000-1200 PLN/day on B2B Work model: hybrid from Gdańsk / Warszawa / Łódź (2/3 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 You will join a team working on an existing system that requires ongoing maintenance and support . The current focus is on ensuring system stability, maintaining functionality, and working with a legacy codebase. Work is carried out in an Agile environment, with a strong emphasis on collaboration and code quality. Responsibilities you'll have Designing and implementing backend services based on given specifications Developing and maintaining REST APIs Writing and maintaining unit tests Working with and analyzing legacy codebase Contributing to the ongoing maintenance and stability of the existing system Collaborating in an Agile environment Using version control and supporting development workflows Expected competences and knowledge Experience with Java 7/8 Experience with Maven Experience in designing and implementing backend services Experience in writing REST APIs Willingness to work with and analyze legacy systems Experience working in an Agile environment Good communication skills Fluency in English Technologies you'll work with Java 7/8 Maven JSP Git REST APIs 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 Developer role in a financial project modernizing and rebuilding a digital banking channel for corporate clients. The position involves developing and enhancing APIs, contributing to system modernization from legacy platforms, and working across microservice and monolith architectures in a SAFe Agile environment. The project focuses on resilient, domain-driven solutions supporting core banking services such as payments and accounts. 🗂️ Requirements: Minimum 6 years of experience in Java development, Experience in building API solutions, Experience with Spring and Hibernate, Experience with SQL and REST, Experience with Microservices architecture, Minimum 2 years of experience with Angular, Experience with Cucumber, Experience with Jasmine unit testing, Knowledge of SOLID principles, Knowledge of design patterns, Experience with GIT, Experience working in Agile environment, Familiarity with reactive programming, Knowledge of Domain Driven Design (DDD) 📃 Skills: Java, Spring, Hibernate, Angular, SQL, REST, Microservices, GIT, Cucumber, Jasmine, Reactive, DDD, SAFe 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Work model: elastic hybrid from Gdynia / Gdańsk / Warszawa (3 days per week from the modern 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 You will be involved in a financial project focused on modernising and building a new digital banking channel for corporate customers. The initiative aims to replace the legacy platform and redefine how clients manage payments, accounts, liquidity, and user permissions. The team operates within the SAFe Agile framework, delivering resilient solutions across microservice and monolith architecture using DDD and port-adapter approach. Responsibilities you'll have Developing new features that modernise the platform and support maintenance and compliance requirements Building and enhancing API solutions to support essential banking services such as Accounts, Payments, File Transfer, and international and local services Contributing to system modernisation and transition from legacy solutions Working within microservice and monolith architecture Collaborating closely with developers, Product Owner, architects, analysts and QA Participating in Agile (SAFe) ceremonies and delivering high-quality software in an international environment Expected competences and knowledge Hands-on experience in Java development (preferred at least 6 years) Experience in building API solutions Familiarity with reactive programming Working knowledge of Spring, Hibernate and Cucumber Experience with SQL, REST, Microservices and GIT 2 years of experience with Angular Working knowledge of unit testing in Jasmine Knowledge of SOLID principles and design patterns Experience working in an Agile environment Technologies you'll work with Java Spring Angular Cucumber Hibernate Jasmine SQL REST Microservices GIT Reactive stack Domain Driven Design (DDD) SAFe Agile framework 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 contract role for a senior Java developer in a financial project modernizing and rebuilding a digital banking channel for corporate clients. The position focuses on developing and enhancing APIs, migrating from legacy systems, and delivering solutions within microservice and monolith architectures using DDD in a SAFe Agile environment. Hybrid work model with collaboration in an international team. 🗂️ Requirements: Minimum 6 years of experience in Java development, Experience in building API solutions, Experience with Spring and Hibernate, Experience with SQL and REST, Experience with Microservices architecture, Minimum 2 years of experience with Angular, Experience with unit testing in Jasmine, Knowledge of SOLID principles and design patterns, Experience with Cucumber, Experience working in Agile (SAFe) environment, Experience with Git, Familiarity with reactive programming 📃 Skills: Java, Spring, Hibernate, Angular, Cucumber, Jasmine, SQL, REST, Microservices, Git, Reactive, DDD, SAFe 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Work model: elastic hybrid from Gdynia / Gdańsk / Warszawa (3 days per week from the modern 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 You will be involved in a financial project focused on modernising and building a new digital banking channel for corporate customers. The initiative aims to replace the legacy platform and redefine how clients manage payments, accounts, liquidity, and user permissions. The team operates within the SAFe Agile framework, delivering resilient solutions across microservice and monolith architecture using DDD and port-adapter approach. Responsibilities you'll have Developing new features that modernise the platform and support maintenance and compliance requirements Building and enhancing API solutions to support essential banking services such as Accounts, Payments, File Transfer, and international and local services Contributing to system modernisation and transition from legacy solutions Working within microservice and monolith architecture Collaborating closely with developers, Product Owner, architects, analysts and QA Participating in Agile (SAFe) ceremonies and delivering high-quality software in an international environment Expected competences and knowledge Hands-on experience in Java development (preferred at least 6 years) Experience in building API solutions Familiarity with reactive programming Working knowledge of Spring, Hibernate and Cucumber Experience with SQL, REST, Microservices and GIT 2 years of experience with Angular Working knowledge of unit testing in Jasmine Knowledge of SOLID principles and design patterns Experience working in an Agile environment Technologies you'll work with Java Spring Angular Cucumber Hibernate Jasmine SQL REST Microservices GIT Reactive stack Domain Driven Design (DDD) SAFe Agile framework 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 contract role for a Front-End Developer in a financial project focused on building and maintaining modern Angular applications consuming REST APIs. The position involves developing user-friendly solutions, integrating with data processing systems, and collaborating within an international team. Hybrid work model with strong emphasis on code quality and application optimization. 🗂️ Requirements: Experience with Angular Framework, Strong knowledge of TypeScript, Strong knowledge of JavaScript, Experience working with REST APIs, Expertise in Hadoop, Expertise in MapReduce, Ability to analyze and debug applications, Experience in data processing, Ability to optimize and reuse existing code, Experience working in software development teams 📃 Skills: Angular, TypeScript, JavaScript, REST, Hadoop, MapReduce 🏢 Description: Salary: 600-900 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (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 You will be involved in a financial project focused on developing and maintaining modern front-end applications that consume REST APIs, supporting business processes and delivering user-friendly solutions for financial stakeholders. Responsibilities you'll have Designing, creating and maintaining front-end applications to consume REST APIs Writing code in accordance with application requirements Working as a member of a software development team to ensure high-quality standards Explaining complex technical topics in a clear, simple way for non-technical audiences Debugging and troubleshooting applications Making suggestions for enhancements to application procedures and infrastructure Collaborating effectively across teams and contributing to a positive work environment Building strong relationships and maintaining trust with team members and business stakeholders Expected competences and knowledge Experience with Angular Framework Strong TypeScript and JavaScript knowledge Expertise in Hadoop and MapReduce Strong communication skills Team player mindset with proven collaboration skills Ability to analyze and debug applications effectively Experience in working with REST APIs and data processing Capability to reuse and optimize existing code Proactive approach to improving processes and solutions Technologies you'll work with Angular Framework TypeScript JavaScript REST API Hadoop MapReduce 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 role for a Senior Java Developer to build a greenfield Straight-Through Processing (STP) lending platform focused on automated, scalable end-to-end loan processing. The position involves designing and developing a modern backend system with event-driven architecture and multiple integrations. You will influence architectural decisions and technology choices while working in an Agile, international environment. 🗂️ Requirements: 5+ years of experience as Java Developer, Strong experience with Java 21+, Hands-on experience with Spring Boot, Deep knowledge of JPA/Hibernate, Experience designing and building REST APIs, Experience with Kafka and event-driven architecture, Experience with relational databases and database design, Experience with Maven, Experience with Liquibase or similar versioning tools, Understanding of clean architecture and design principles, Experience working in Agile environment, Ability to work in English-speaking team 📃 Skills: Java, Spring, SpringBoot, JPA, Hibernate, Kafka, REST, Maven, Liquibase, SQL, PostgreSQL, Oracle, Git, Cucumber, Copilot, Agile 🏢 Description: Salary: 1000-1400 PLN/day on B2B Work model: elastic hybrid from Gdańsk/ Gdynia (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 You will be involved in a financial project focused on building a modern Straight-Through Processing (STP) Lending platform , designed to support end-to-end loan processing in a highly automated and scalable way. The system will play a central role in the lending ecosystem, integrating with multiple internal and external services, ensuring efficient data flow and real-time event processing. As this is a greenfield initiative, you will have a direct impact on architectural decisions, technology choices, and development standards, helping to shape a robust backend platform from the ground up. Responsibilities you'll have Designing and developing scalable backend services using Java and Spring Boot Building and maintaining REST APIs for integration with external and internal systems Implementing event-driven architecture using Kafka Designing and managing persistence layers with JPA and relational databases Managing database schema evolution using Liquibase Collaborating closely with Product Owner and Business SMEs to refine requirements Writing clean, maintainable, and testable code following best engineering practices Leveraging AI-assisted tools (e.g., GitHub Copilot) to improve development efficiency Participating in Agile ceremonies and contributing to continuous improvement Ensuring high code quality through testing, code reviews, and best practices Expected competences and knowledge 5y+ of experience as Java Developer Strong experience in Java ( Java 21+) with solid understanding of backend development Extensive hands-on experience with Spring Boot framework Deep knowledge of JPA/Hibernate and database design principles Experience in building RESTful APIs and integrating distributed systems Understanding of event-driven architectures ( Kafka ) Familiarity with Maven for build and dependency management Experience with Liquibase or similar tools for database versioning Good understanding of clean architecture and software design principles Experience working in Agile environments Strong communication skills and ability to work in an English-speaking team Nice to have: experience with Cucumber for BDD testing Technologies you'll work with Java 21+ Spring Boot JPA / Hibernate Apache Kafka REST APIs Maven Liquibase Relational databases (e.g., PostgreSQL, Oracle) GitHub Copilot (AI-assisted development) Cucumber (optional, for testing) 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.

🏢 Summary: B2B Java Developer role in a financial project focused on rebuilding and modernizing collateral data streams within a Data Products initiative aligned with Data Mesh principles. The position involves designing and developing Java-based data solutions, collaborating with cross-functional teams, and supporting code reviews in an international banking environment. Hybrid work model with strong emphasis on modern development practices and scalable data solutions. 🗂️ Requirements: Minimum 5 years of Java development experience, Experience building and maintaining REST APIs, Experience with Git version control, Experience working in Agile/Scrum environment, Experience with CI/CD pipelines, Participation in code reviews and peer reviews, Fluent English (spoken and written), Ability to work in distributed teams 📃 Skills: Java, REST, Git, Agile, Scrum, CI/CD, DataMesh 🏢 Description: Salary: 1000 - 1200  PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (2/3 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 You will be involved in a financial project focused on rebuilding and modernizing collateral data streams within a Data Products initiative. The project follows Data Mesh principles and aims to improve the quality, scalability, and accessibility of data products across the organization. You will work closely with cross-functional teams to design, develop, and analyze data solutions that support critical business processes in the banking and financial services domain. Responsibilities you'll have Developing and maintaining Java-based solutions within Data Products initiatives Rebuilding and enhancing collateral data streams following Data Mesh principles Collaborating with cross-functional teams to deliver high-quality solutions Participating in code reviews and supporting technical discussions as a sparring partner Expected competences and knowledge Minimum 5 years of hands-on experience in Java development Strong collaboration and communication skills with the ability to work effectively in distributed teams Experience working according to the four-eyes principle and participating in peer reviews Ability to adapt quickly to changing business and technical requirements Fluency in spoken and written English Proactive mindset and willingness to support and engage colleagues in technical discussions Experience in the banking or financial services industry will be considered an advantage Technologies you'll work with Java REST APIs Git Agile / Scrum methodologies CI/CD tools Modern software development and code review practices 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 contract role for a senior iOS developer to build and maintain critical payment features within a large-scale digital platform. The position focuses on developing scalable, compliant, and high-availability mobile solutions while modernizing architecture and accelerating feature delivery. Work is hybrid from Warsaw, Gdańsk, or Łódź. 🗂️ Requirements: 5+ years of iOS development experience, Strong Swift knowledge, Strong Objective-C knowledge, Experience with Swift-Objective-C interoperability, Experience with VIPER or MVVM, Experience with UIKit and programmatic UI, Experience with AutoLayout, Experience with REST API integration, Understanding of concurrency and asynchronous programming, Experience with unit testing using XCTest, Experience with mocking and test automation, Experience with modular architecture and dependency management, Ability to collaborate with backend and cross-platform teams 📃 Skills: iOS, Swift, Objective-C, XCTest, VIPER, MVVM, UIKit, SwiftUI, REST, Concurrency, AutoLayout, Mocking, Networking, Java, Angular, TypeScript, JavaScript 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Work model: remote 100% 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 maintenance of critical payment capabilities within a large-scale digital platform serving millions of active users. It centers on delivering solutions that support payments across multiple digital channels while ensuring regulatory compliance, scalability, and high system availability. The initiative includes parallel efforts related to implementing new payment regulations, driving business growth objectives, and transforming infrastructure, including modernization of payment systems and simplification of architecture. The project also aims to increase team throughput and accelerate delivery of new features to meet market demands and reduce the risk of delays in key strategic and regulatory initiatives. Responsibilities you'll have Development and maintenance of iOS applications using Swift and Objective-C Designing and implementing application architecture ( MVVM / VIPER ) Building UI using UIKit (programmatic UI, Auto Layout) and developing components in SwiftUI Integrating applications with backend systems via REST APIs Managing asynchronous operations and optimizing application performance Creating and maintaining unit and automated tests (XCTest, mocking) Designing modular application structure and managing dependencies Actively participating in application testing to improve delivery flow and eliminate QA bottlenecks Collaborating with backend and cross-platform teams ( Android, Web ) Participating in code reviews and ensuring high code quality Contributing to architectural and technical decision-making Expected competences and knowledge Several years (5+) of experience in iOS application development Unit Testing & Mocking - XCTest for unit and TestAutomation and Swift Testing framework, Architectural Patterns (VIPER/MVVM) Advanced Swift & Objective-C knowledge and expertise, as well the Swift - Objective-C Interoperability Programmatic UI & Auto Layout (with emphasis on UIKit), SwiftUI would be a nice addon, but not required as of today (from the perspective of our codebase, however we would expect that the candidate knows SwiftUI) Experience with modular design and dependency management Networking & Concurrency: The candidate should have a solid understanding of consuming REST APIs, handling asynchronous operations, queues and asynchronous code Have excellent communication skills Payment domain knowledge is a plus Backend development experience (Java) is a plus Are an engineer by heart Actively participate in application testing to prevent QA bottlenecks during high delivery periods. By contributing to testing, you help maintain flow, reduce delays, and improve overall team efficiency. Nice to have Able to understand android and web frontend (Angular, TypeScript, JavaScript), because it helps you to get our platforms aligned Technologies you'll work with iOS Swift REST API Java (Nice to have) 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: 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 role for a senior Fullstack Developer to build a greenfield financial application (Structured Loan Manager / Covenant) in an Agile environment. The position involves developing backend and frontend features, ensuring high‑quality UI/UX, and delivering end‑to‑end tests in close collaboration with business stakeholders. Hybrid work model with strong focus on modern technologies and collaboration. 🗂️ Requirements: Minimum 6 years commercial experience with React, Minimum 5 years experience with JPA, Practical experience with Java and Spring Boot, Experience with Java 17+, Experience in Agile teams, Ability to design and implement UI/UX solutions, Experience with end-to-end testing, Experience breaking down requirements into user stories 📃 Skills: React, Java, SpringBoot, JPA, Java17, Agile, Selenium, Liquibase, Maven, Cucumber, E2E 🏢 Description: Salary: 1000 - 1300 PLN/MD on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź ( 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 You will be involved in a financial project Structured Loan Manager / Covenant , developed by a Structured Finance team in Poland . The application is a greenfield project that is just starting. There is a close and dedicated business team responsible for delivering requirements. The team works in an Agile setup with a strong focus on collaboration and high communication. You will be involved in a financial project Structured Loan Manager / Covenant , developed by a Structured Finance team in Poland. The application is a greenfield project that is just starting. There is a close and dedicated business team responsible for delivering requirements. The team works in an Agile setup with a strong focus on collaboration, transparency, and high communication standards. As a developer, you will work on both backend and frontend development, taking responsibility not only for delivering high‑quality code but also for ensuring a strong user experience in the UI. The role also includes breaking down requirements into stories and delivering end‑to‑end tests . Responsibilities you'll have Developing backend and frontend features within a greenfield application Designing and implementing high-quality user experience in the UI Collaborating closely with the business team on breaking down requirements into stories Implementing application changes and improvements Preparing and executing end-to-end tests Actively participatin g in Agile ceremonies and team communication Expected competences and knowledge React minimum 6 years of commercial experience Practical knowledge of Java and Spring Boot Motivation and readiness to further develop Java and backend skills JPA - minimum 5 years of experience Experience working in Agile teams Nice to have: Selenium Liquibase (database versioning) Maven Cucumber (testing) Technologies you'll work with React Java 17+, Spring Boot, JPA End-to-end testing Maven, Liquibase 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.