React Native Developer (Mobile)

🏢 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 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: 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: Full Stack Developer role in the payment domain focused on building and scaling high-performance, distributed financial applications using Java and Angular. The position involves developing robust backend services, REST APIs, and modern frontend solutions, with strong emphasis on reactive programming, automated testing, and CI/CD practices. The project operates in an international environment with hybrid work model. 🗂️ Requirements: Minimum 5 years of experience as Full Stack Developer, Strong experience with Java, Strong experience with Spring Boot, Experience with reactive programming (e.g. RxJava), Solid knowledge of Angular or AngularJS, Experience with TypeScript, Experience in REST API development, Hands-on experience with unit testing, Experience with test automation frameworks (e.g. Cucumber), Experience with build tools and CI/CD pipelines 📃 Skills: Java, SpringBoot, Angular, AngularJS, TypeScript, RxJava, REST, Cucumber, CI/CD, UnitTesting, ReactiveProgramming 🏢 Description: Salary: 1000 - 1300 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 dynamic project within the payment domain, focused on building and scaling modern, high-performance financial applications. The team works on developing robust, distributed systems with an emphasis on reliability, scalability, and seamless user experience. Responsibilities you'll have Design, develop, and maintain full stack applications using Java and Angular Build and enhance backend services using Spring Boot and reactive programming (e.g. RxJava) Create and maintain RESTful APIs for seamless system integration Actively participate in application testing to prevent QA bottlenecks during high delivery periods Contribute to automated testing using unit tests and frameworks such as Cucumber Collaborate closely with cross-functional teams to improve performance and delivery flow Work with build tools and CI/CD pipelines to streamline development processes Expected competences and knowledge Minimum 5 years of experience as a Full Stack Developer Strong experience with Java and Spring Boot Experience with reactive programming approaches and libraries (e.g. RxJava) Solid knowledge of Angular/AngularJS and TypeScript Experience in REST API development Hands-on experience with unit testing and test automation Familiarity with automation frameworks (e.g. Cucumber) Strong problem-solving skills and engineering mindset Excellent communication skills and ability to work in a team Experience in the payment domain is a plus Technologies you'll work with Java, Spring Boot Angular / AngularJS, TypeScript RxJava (or similar reactive libraries) REST APIs Cucumber and test automation tools Build tools and CI/CD solutions 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 for a Senior Android Developer in a financial project building and enhancing modern payment solutions used by thousands of customers. The role focuses on high-quality, scalable and secure Android applications, contributing to architecture and full SDLC within a cross-functional team. Hybrid work model with strong emphasis on modern mobile technologies and CI/CD practices. 🗂️ Requirements: Minimum 5 years commercial experience with Kotlin and Java, Expert knowledge of Android SDK, Strong experience with Jetpack Compose, Solid understanding of MVVM and Clean Architecture, Experience with Coroutines, StateFlow or RxJava, Experience with dependency injection and multi-module architecture, Experience writing unit, integration and UI tests, Knowledge of JUnit, Mockito, Espresso, Turbine, Understanding of Gradle and CI/CD pipelines, Experience integrating RESTful APIs, English level B2 or higher 📃 Skills: Kotlin, Java, Android, SDK, Jetpack, Compose, MVVM, CleanArchitecture, Coroutines, StateFlow, RxJava, JUnit, Mockito, Espresso, Turbine, Gradle, CI/CD, REST, Git 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Work model: remote 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 and enhancing modern payment solutions used by thousands of customers. The project emphasizes high-quality mobile development, scalability, security, and seamless user experience across multiple platforms. You will work in a cross-functional team, contributing to the entire software development lifecycle while helping shape the architecture and technical direction of the Android applications. Responsibilities you'll have Design, develop, and maintain Android applications using Kotlin, Java, and Jetpack Compose Create scalable and maintainable solutions following MVVM and Clean Architecture principles Collaborate with iOS and web teams to maintain platform consistency and alignment Implement and optimize reactive data flows using Coroutines, StateFlow and RxJava Develop and maintain multi-module application architecture and dependency injection solutions Write and maintain automated tests, including unit, UI and flow tests Contribute to CI/CD processes, code reviews, and cupport integration with RESTful APIs Expected competences and knowledge Strong commercial experience with Kotlin and Java development - min. 5 years Expert knowledge of Android SDK and Jetpack Compose Solid understanding of Android Architecture Components , MVVM, and Clean Architecture Experience with reactive programming using Coroutines, StateFlow and/or RxJava Practical knowledge of dependency injection and multi-module application architecture Experience in writing unit, integration, UI, and flow tests using JUnit, Mockito, Espresso and Turbine Good understanding of Gradle, CI/CD pipelines , and version control systems Excellent communication skills in English (min. B2 level) Nice to have: - experience in the payments or fintech domain - backend development experience with Java - understanding of iOS development and web technologies (Angular, TypeScript, JavaScript Technologies you'll work with Kotlin Java Android SDK Jetpack Compose MVVM / Clean Architecture Coroutines, StateFlow, RxJava CI/CD pipelines RESTful 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: Hybrid B2B role in a financial project focused on end-to-end ownership of a legacy system (4450 / LETU), including analysis of data flows, integrations, incident handling, and lifecycle decisions. The position involves working across C/C++ codebase, UI layer, VBA templates, and Java integrations while supporting regulatory changes and deployments. The role combines maintenance, modernization, and operational stability improvements in an international Scrum environment. 🗂️ Requirements: Strong C programming skills, Strong C++ programming skills, Experience with legacy system maintenance, Ability to analyze data flows and system integrations, Experience with incident investigation and debugging, Experience with CI/CD pipelines, Experience working in Scrum, Knowledge of credit domain, Experience with code packaging and deployment, Ability to work with VBA and Java components 📃 Skills: C, C++, DScreen, VBA, Java, Scrum, CI/CD, GitHub, Copilot 🏢 Description: Salary: 900 - 1300 PLN/day on B2B Work model: hybrid from Warszawa (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 taking end-to-end ownership of 4450 / LETU and related components, including analysis of data flows, integrations, and dependencies across systems, support for mandatory regulatory or business-driven changes, incident investigation and debugging, packaging and deployment activities, as well as contributing to lifecycle decisions regarding maintainability, modernisation, or decommissioning of the solution . Responsibilities you'll have Take end-to-end ownership of 4450 / LETU and related components Analyse and understand data flows, integrations, and dependencies across systems Support mandatory regulatory or business-driven changes Investigate incidents and perform debugging activities Support packaging and deployment activities Work across C / C++ codebase, DScreen UI layer, VBA-based document templates, and minor Java integration components Drive knowledge consolidation through reverse engineering and KT structuring Improve documentation and operational stability Contribute to lifecycle decisions: maintain vs. modernise vs. decommission Participate in effort vs. value trade-off discussions with stakeholders Expected competences and knowledge C / C++ Scrum CI/CD Use of GitHub Copilot Domain knowledge of credit Technologies you'll work with C C++ DScreen VBA Java GitHub Copilot 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: Frontend Developer role in a financial project focused on developing and modernizing an Integrated Risk Management Application (IRMA). The position involves building high-quality, user-friendly interfaces and integrating them with backend services in an Agile environment. The role requires strong frontend expertise and collaboration with designers and backend developers. 🗂️ Requirements: Strong knowledge of HTML and CSS, Proficiency in TypeScript (latest versions), Experience with modern frontend frameworks (Vue.js, React or Angular), Understanding of state management concepts, Experience with web components, Experience with REST API integration, Familiarity with Git version control, Experience with unit and end-to-end testing, Ability to work in Agile environment 📃 Skills: HTML, CSS, TypeScript, Vue, React, Angular, State, WebComponents, REST, Git, Testing, Docker, CI/CD 🏢 Description: Salary: 900-1200 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk (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 modernising client's Integrated Risk Management Application (IRMA), a tool designed to streamline and optimise the management of non-financial risks across the organisation. The goal is to create an intuitive and efficient platform that supports risk management processes across all three lines of defence. Responsibilities you'll have Developing high-quality frontend solutions for a complex financial application Building intuitive and user-friendly interfaces for risk management processes Collaborating in an Agile, fast-paced environment Working closely with designers and backend developers Implementing and maintaining design systems and UI components Integrating frontend applications with REST APIs Writing and maintaining unit and end-to-end tests Expected competences and knowledge Strong knowledge of HTML and CSS Proficiency in TypeScript (latest versions) Experience with modern frontend frameworks ( Vue.js, React or Angular ) Understanding of state management concepts Experience with web components Familiarity with Git version control Experience with unit and E2E testing Nice to have: Knowledge of Docker Familiarity with CI/CD pipelines Understanding of UI/UX best practices Experience with tools like GitHub Copilot Technologies you'll work with HTML / CSS TypeScript Vue.js / React / Angular Web Components State management tools REST APIs Git Testing frameworks (unit & E2E) Docker (nice to have) CI/CD tools (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 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: Frontend Architect role in a financial project focused on building secure, high-performance, interactive web applications supporting complex workflows and real-time data. The position involves shaping frontend architecture, developing Web Components, and ensuring code quality and performance across large-scale systems. Hybrid work model with strong emphasis on technical excellence and collaboration in international teams. 🗂️ Requirements: Strong expertise in HTML, CSS, JavaScript, TypeScript, Experience with Web Components and Lit, Solid understanding of Node.js and npm ecosystem, Experience writing unit tests with Vitest, Strong knowledge of frontend architecture and design patterns, Experience with performance optimization and Core Web Vitals, Ability to integrate REST and GraphQL APIs, Experience in large-scale, modular frontend codebases 📃 Skills: TypeScript, JavaScript, HTML5, CSS3, Sass, WebComponents, Lit, Node.js, npm, Vitest, Playwright, REST, GraphQL, CI/CD, GitHubActions, GitLabCI, Kafka, MQ, NinjaFork 🏢 Description: Salary: 900-1200 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 building secure, high‑performance, and highly interactive web applications that support complex business workflows, real‑time data processing, and seamless user experiences. You’ll play a key role in shaping the frontend architecture, ensuring code quality, and driving technical excellence across the team. Responsibilities you'll have Architect and implement complex, interactive user interfaces and single‑page applications using TypeScript and JavaScript Define and maintain best practices for frontend architecture, state management, and component reusability Develop and maintain Web Components using Lit, ensuring modularity and long‑term maintainability Optimize application performance, improve Core Web Vitals, and ensure smooth experiences across devices and browsers Collaborate closely with backend engineers, UX/UI designers, and product managers to deliver end‑to‑end product features Integrate with REST and GraphQL APIs, ensuring reliability, security, and consistency of data flows. Conduct performance audits, code reviews, and mentor other developers Contribute to CI/CD pipelines and deployment workflows (nice‑to‑have) Participate in system design discussions and influence technical decisions across the product Expected competences and knowledge Strong expertise in HTML, CSS, JavaScript, TypeScript Experience with Web Components and Lit Solid understanding of Node.js and npm ecosystem Experience writing unit tests with Vitest Strong knowledge of frontend architecture, design patterns, and performance optimization Ability to work with REST/GraphQL APIs Experience in large‑scale, modular frontend codebases Strong communication skills and ability to collaborate in cross‑functional teams Technologies you'll work with TypeScript, JavaScript Web Components, Lit HTML5, CSS3, Sass Node.js, npm Vitest, Playwright (optional) REST, GraphQL CI/CD tools (GitHub Actions, GitLab CI, or similar) Kafka, MQ systems (nice‑to‑have) NinjaFork (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: Full-stack Developer role in the Cards Domain focused on modernizing financial systems through scalable microservices, distributed architectures, and integrations with legacy and target platforms. The position involves backend and frontend development using Java and Angular/React, event-driven solutions, and cloud-native technologies in a hybrid work model. 🗂️ Requirements: Minimum 2 years of frontend experience, Minimum 5 years of Java development experience, Experience with microservices architecture, Knowledge of event sourcing architecture patterns, Experience building distributed and scalable applications, Hands-on experience with Angular or React, Experience with Spring Framework, Knowledge of Docker and Kubernetes, Experience with REST APIs, Experience with Kafka, MQ and SQL, Experience integrating RESTful and SOAP/OSB services, Familiarity with Jenkins and Argo CD, Understanding of XML, JSON and Avro, Experience with Git, English level B1+/B2, Experience working in Agile/Scrum, Familiarity with Oracle DB integration 📃 Skills: Java, Spring, SpringBoot, Angular, React, Kafka, Kubernetes, Docker, REST, SOAP, OSB, Oracle, SQL, MQ, Jenkins, ArgoCD, Git, XML, JSON, Avro 🏢 Description: Salary: 1100-1450 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (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 the modernization and development of solutions within the Cards Domain. The project aims to build and maintain scalable microservices-based applications , integrate existing systems with the target platform, and support the transition from legacy solutions through translation and routing mechanisms. As a Full-stack Developer , you will work on both frontend and backend components, contributing to event-driven and distributed architectures while ensuring high performance, reliability, and seamless integration with multiple internal systems and services. Responsibilities you'll have Designing and developing a full-stack application Integration between existing applications and Cards target platform for Cards Domain Translation/routing mechanisms from old to new systems Developing microservices with Angular, REST APIs, Kafka/MQ/Oracle DB integration Ensuring the best possible quality and responsiveness of the applications Cooperation with internal/external stakeholders to implement the best possible solutions Expected competences and knowledge Minimum 2 years of front-end experience Minimum 5 years of Java Software Development experience Practical knowledge of event sourcing architecture patterns, microservices architecture , clean code and continuous integration Experience in building distributed, highly scalable and high throughput applications Knowledge and hands-on experience with Angular/React, Spring Framework, Docker, Kubernetes, REST, Kafka, MQ and SQL Experience with integrations towards RESTful and SOAP/OSB services Familiarity with DevOps tools such as Jenkins and Argo CD Understanding of data standards such as XML, JSON and Avro Experience with Kafka streaming platform and schema registry concepts Experience with version control tools such as Git English at B1+/B2 level Agile/Scrum methodology experience Familiarity with Oracle DB integration Technologies you'll work with Java Spring Boot Angular / React Kafka Kubernetes MQ REST APIs SOAP / OSB Services Oracle Database SQL Docker Jenkins Argo CD Git XML JSON Avro 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.