Mid Fullstack Developer (.NET + React)

🏢 Summary: B2B .NET Developer role focused on developing and maintaining a web-based platform hosted in Azure, including building new features and integrating third-party APIs. The position involves working in a small, independent team delivering increments in short cycles with CI/CD practices. Hybrid work model with one day per week in the office. 🗂️ Requirements: Minimum 2 years experience in web application development, Experience with C# and .NET, Experience with Azure, Experience with AzureFunctions, Experience integrating third-party APIs, Knowledge of CI/CD pipelines, Experience with AzureDevOps 📃 Skills: C#, .NET, Azure, AzureFunctions, AzureDevOps, CI/CD, APIs, Web 🏢 Description: Salary: 500 - 900 PLN / day (B2B) Remote: Hybrid from Gdańsk or Warsaw (1 day from office per week) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis The Jit community will bring you a nice time during regular integration meetings Project We are looking for a .NET Developer to join our team to develop new functionalities and maintain our Client's web-based platform hosted in Azure. The tasks will include expanding the platform as well as integrating with third-party APIs. We offer work in an independent team focused on delivering value to the Clients in short cycles. Responsibilities you'll have Design, develop, and maintain software using C# Effectively communicate in an English-speaking environment Build and deploy code using CI/CD pipelines Expected competences and knowledge Minimum 2 years of experience in developing web applications Experience in working with Azure, especially Azure Functions and Azure Experience in integrating with third-party APIs Great communications skills Willingness to propose improvements and new solutions Knowledge of CI/DD pipelines in Azure DevOps is a plus Technologies you'll work with .Net Azure API Client – why choose this particular client from the Jit portfolio? Our client is a pioneering Norwegian startup specializing in shore power and energy infrastructure optimization. They transform manual and error-prone operations into automated, accurate, and seamless experiences. With their solutions, ports can automate processes to reduce manual errors, monitor real-time energy consumption, and centralize the management of power connections and billing. This comprehensive approach enhances operational efficiency and reduces costs, positioning our client as an innovative partner in the maritime sector. 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 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: 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: 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: 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: 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 QA role in a large-scale financial digital platform project, covering web and mobile applications integrated with multiple backend services and APIs. The position focuses on manual and API testing, quality assurance processes, and collaboration within distributed Agile teams to ensure high reliability and quality. Work is hybrid with strong emphasis on test transparency and continuous improvement. 🗂️ Requirements: 8+ years of experience in Quality Assurance, ISTQB Certification (Foundation or higher), Experience testing complex software systems, Experience in mobile application testing, Experience in system testing of web and mobile UI, Experience in API testing, Experience with test management tools (e.g. qTest), Experience working with Jira and Confluence 📃 Skills: QA, ISTQB, API, Postman, Swagger, qTest, Jira, Confluence, Agile, Scrum, Web, Mobile, Testing 🏢 Description: Salary: 500-800 PLN/day on B2B Work model: elastic hybrid from Gdynia or Gdańsk (at least 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 The project focuses on the development and maintenance of a large-scale digital platform supporting financial services used by millions of end users. The solution consists of modern web and mobile applications integrated with multiple backend services and APIs. The system operates in a complex ecosystem with numerous integrations and high quality and reliability requirements. The project is delivered by distributed Agile teams working in an international environment , with a strong focus on quality assurance, test transparency, and continuous improvement of testing practices. Responsibilities you'll have Ensure QA activities are conducted efficiently and properly documented in accordance with established quality standards Analyze requirements and design test cases and test scenarios Plan, execute, and monitor manual testing activities Report, track, verify, and manage defects throughout the development lifecycle Recommend appropriate actions based on test results and identified risks Identify test cases suitable for automation after manual verification Collaborate closely with the Scrum team to ensure high quality of delivered software Expected competences and knowledge 8+ years of professional experience in Quality Assurance ISTQB Certification (Foundation level or higher) Experience in defining, executing, and reporting tests for complex software systems Experience in mobile application testing Experience in system testing of modern Web and Mobile UI Strong experience in API testing using tools such as Postman or Swagger Experience with test management tools (preferably qTest or similar) Practical experience working with Jira and Confluence Strong attention to detail and problem-solving skills Ability to work effectively in an international and cross-functional environment Willingness to learn new tools, processes, and testing approaches 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 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.