Full-stack Java Developer

🏢 Summary: 100% remote B2B contract for a senior Full Stack Developer to deliver and maintain enterprise applications, focusing on urgent project phases through July 2026. The role requires independent ownership of a client’s finance module and rapid delivery of high-quality, scalable, and secure solutions. Work includes both front-end and back-end development in a microservices-based architecture. 🗂️ Requirements: 10+ years of commercial experience, Strong experience in Java development, Strong experience with Spring Boot, Experience with microservices architecture, Experience with React.js, Full-stack development experience, Experience with REST APIs, Knowledge of integration patterns, Experience with cloud-ready applications, Ability to independently handle finance module 📃 Skills: Java, SpringBoot, Microservices, React, REST, APIs, Cloud, Integration, Fullstack 🏢 Description: 100% remote B2B: 180-190 zł/h netto + VAT Contract till end of July 2026 (chance of extension) Experience Level: 10+ years of experience Must be able to work independently and deliver quickly Must be able to independently handle the clients finance module Core Responsibilities: Develop and maintain both front-end and back-end components of enterprise applications Work on urgent deliverables for Phase 1 and potentially Phase 2 Collaborate with internal teams Ensure high-quality, scalable, and secure solutions within tight timelines Technical Skills Required: Java Spring Boot (including microservices architecture) React.js (front-end development) Strong understanding of full stack development principles Experience with REST APIs , integration patterns , and cloud-ready applications Familiarity with CI/CD pipelines , containerisation (Docker/Kubernetes) is a plus Soft Skills: Ability to work independently with minimal supervision Strong problem-solving and troubleshooting skills Excellent communication and collaboration skills What we offer: 100% remote Multisport card Private heatlhcare Life insurance

🏢 Summary: Long-term remote B2B contract for a technical leader responsible for guiding a development team in building and maintaining scalable applications within an agile environment. The role combines hands-on .NET development with strategic oversight, technical analysis, and quality management. Focus is on delivering robust, cloud-oriented solutions and improving application delivery speed. 🗂️ Requirements: Proficiency in .NET and C#, Experience in full-stack development, Experience with front-end technologies, Experience with document-based databases, Knowledge of event-based messaging frameworks, Experience with cloud services, Experience with containerization, Ability to lead development team, Experience in building scalable systems 📃 Skills: .NET, C#, Angular, MongoDB, Cloud, Docker, Messaging, SQL 🏢 Description: Work model: 100% remote Start date: 30.06.2026 Rate: 160-180 PLN/h netto + VAT Contract : B2B, long-term cooperation (12-month contract up front + extensions) Recruitment process : 2 stages, including a technical test estimated to take 2-4 hours. Summary: The role focuses on leading the development team to create new solutions and maintain systems within an agile environment, emphasizing the importance of robust applications and strategic direction. Main Responsibilities: Lead the development team in creating and maintaining applications. Adopt wider technology practices and address the speed of new application delivery. Engage in hands-on development while guiding the strategic direction of projects. Collaborate with teams to gather specifications and perform technical analysis. Navigate complex systems and ensure they are built to scale. Manage developer quality and capacity amidst organizational constraints. Key Requirements: Proficient in .NET and C#. Experience with full-stack development, including front-end technologies. Familiarity with document-based databases. Knowledge of event-based messaging frameworks. Experience with cloud services and containerization. Nice to Have: Prior experience in the banking or financial services sector. Familiarity with Angular or other modern front-end frameworks. Experience with MongoDB or similar environments. Other Details: Environment: .NET, C#, Angular, MongoDB, moving towards cloud solutions. Team Structure: Full Stack Developers working closely with Business Analysts.

🏢 Summary: Technical leadership role focused on driving the development and maintenance of scalable .NET-based applications in an agile environment. The position combines hands-on full-stack development with strategic oversight of architecture, quality, and delivery speed. It involves close collaboration with cross-functional teams to build robust, cloud-oriented solutions. 🗂️ Requirements: Proficiency in .NET and C#, Experience in full-stack development, Knowledge of front-end technologies, Experience with document-based databases, Knowledge of event-based messaging frameworks, Experience with cloud services, Experience with containerization, Ability to design scalable systems, Experience leading development teams 📃 Skills: .NET, C#, Angular, MongoDB, Cloud, Docker, Kubernetes, Microservices, REST, Git 🏢 Description: Work model: 100% remote Start date: 30.06.2026 Rate: 160-180 PLN/h netto + VAT Contract : B2B, long-term cooperation (12-month contract up front + extensions) Recruitment process : 2 stages, including a technical test estimated to take 2-4 hours. Summary: The role focuses on leading the development team to create new solutions and maintain systems within an agile environment, emphasizing the importance of robust applications and strategic direction. Main Responsibilities: Lead the development team in creating and maintaining applications. Adopt wider technology practices and address the speed of new application delivery. Engage in hands-on development while guiding the strategic direction of projects. Collaborate with teams to gather specifications and perform technical analysis. Navigate complex systems and ensure they are built to scale. Manage developer quality and capacity amidst organizational constraints. Key Requirements: Proficient in .NET and C#. Experience with full-stack development, including front-end technologies. Familiarity with document-based databases. Knowledge of event-based messaging frameworks. Experience with cloud services and containerization. Nice to Have: Prior experience in the banking or financial services sector. Familiarity with Angular or other modern front-end frameworks. Experience with MongoDB or similar environments. Other Details: Environment: .NET, C#, Angular, MongoDB, moving towards cloud solutions. Team Structure: Full Stack Developers working closely with Business Analysts.

🏢 Summary: Fullstack Developer role focused on building and evolving Java-based microservices and modern Angular Single Page Applications within an event-driven architecture. The position emphasizes backend development with Spring Boot, Kafka integration, and secure, scalable solutions, while contributing to CI/CD pipelines and frontend best practices. Work involves close collaboration on solution design, security implementation, and continuous improvement in an Agile environment. 🗂️ Requirements: Strong hands-on experience with Java 17–21, Strong experience with Spring Boot 3.x, Experience with microservices architecture, Experience with Kafka in event-driven or messaging systems, Strong practical experience with SQL and Oracle, Experience or strong understanding of Redis, Experience with Domain Driven Design, Experience with Node.js, Experience with TypeScript, Experience building Single Page Applications with Angular, Strong knowledge of Angular architecture and best practices, Strong understanding of web application security, Practical knowledge of OIDC and OAuth2, Experience with Git, Experience working in Agile methodologies 📃 Skills: Java, Spring, SpringBoot, Microservices, Kafka, SQL, Oracle, Redis, DDD, Node.js, TypeScript, Angular, SPA, Security, OIDC, OAuth2, Git, Agile 🏢 Description: Location: Hybrid work model – 2-3 days per week from the Warsaw office Salary: 160 – 170 PLN net/h (B2B via Experis) Tasks: •    Design, develop, and maintain fullstack applications with a strong emphasis on backend and modern frontend architectures •    Build high-quality, maintainable, secure, scalable, and testable software aligned with business requirements •    Develop and evolve Java-based microservices using Spring Boot •    Contribute to Single Page Applications development ensuring frontend best practices •    Collaborate with business and technical stakeholders to clarify and refine functional and non-functional requirements •    Participate in solution design pre-project studies and technical decision-making •    Integrate systems using event-driven architectures and streaming platforms •    Optimize and maintain existing codebases •    Implement execute and maintain automated tests and CI/CD pipelines •    Ensure application security including identity management and secure authentication flows •    Maintain and update technical documentation •    Participate in internal and external developer communities to share best practices •    Continuously improve skills in modern technologies and software engineering practices Requirements: Backend & Architecture •    Strong hands-on experience with Java 17–21 focusing on modern Java •    Strong experience with Spring Boot 3.x and microservices architectures •    Required experience with Kafka in event-driven or messaging-based systems •    Strong practical experience with SQL using Oracle •    Experience or strong understanding of Redis •    Experience with Domain Driven Design Frontend •    Required experience with Node.js •    Required experience with TypeScript •    Solid experience building Single Page Applications using Angular •    Strong knowledge of Angular best practices architecture and maintainability •    Experience with SPA development •    Webpack knowledge is a nice to have Security •    Strong understanding of web application security •    Practical knowledge of OIDC and OAuth2 protocols •    Experience with identity management platforms as a strong advantage •    Awareness of OWASP principles certifications are a plus DevOps & Tooling •    Required experience with Git •    Experience with CI/CD pipelines GitLab CI and Jenkins as a nice to have •    Maven knowledge as a nice to have •    Docker and Kubernetes knowledge as a nice to have •    Experience with IntelliJ and VS Code •    Knowledge of Jira and Confluence •    Python knowledge as a nice to have •    Practice with AI based code generation tools as a nice to have Methodologies & Ways of Working •    Experience working in Agile methodologies such as Scrum and Kanban •    DevOps mindset and practices •    Ability to collaborate in distributed international teams Offer: •    Multisport card •    Private healthcare •    Access to an e‑learning platform •    Group life insurance

🏢 Summary: Full Stack Developer role in the automotive industry focused on building and maintaining web applications using modern Java and JavaScript technologies. The project involves developing Angular-based frontends and Spring Boot backends deployed on AWS, with long-term remote collaboration. Full-time B2B engagement with English-speaking client and regular team interactions. 🗂️ Requirements: 5+ years of software development experience, Proficiency in Java, Proficiency in JavaScript, Proficiency in TypeScript, Experience with Spring Boot (Boot, Data, Security), Experience with Angular, Experience with HTML/CSS, Experience with SQL databases, Experience with NoSQL databases, Experience with Hibernate or JPA, Experience with AWS (ECS, EKS, Lambda, CloudWatch), Ability to write unit tests using JUnit 📃 Skills: Java, JavaScript, TypeScript, Angular, HTML, CSS, Spring, SpringBoot, Hibernate, JPA, SQL, NoSQL, AWS, ECS, EKS, Lambda, CloudWatch, JUnit 🏢 Description: 🌍 Remote work: remote (occasional meetings in the Warsaw office; may happen every 2 weeks, with client workshops every 3 months). 💰 Rate: B2B – up to 145 zl/h. 📕 Project language: English. ⏳ Project length: > 12 months + prolongations. ⏰ Start: ASAP / 2 weeks. 💻 Equipment : work on own equipment. 💬 Workload: full time, fixed-price contract : including 30 paid days off (approx. 18.5 working days/month). ⚙️ Recruitment process : 1 interview with the client. 💼 Industry : Automotive. Summary: This role focuses on developing and maintaining robust full stack applications for the PAAK team, primarily using a range of modern web technologies and frameworks . Main Responsibilities: Develop and maintain full stack applications using Java, JavaScript, and TypeScript . Implement web front-ends using Angular and HTML/CSS . Design and manage back-end services with Spring Boot , including integration with databases. Utilize AWS cloud services for deployment and monitoring. Write unit tests and maintain code quality using JUnit. Participate in regular team meetings and client interactions . Key Requirements: 5+ years of experience in software development. Proficiency in Java and JavaScript/TypeScript. Experience with Spring Boot and its ecosystem (Boot, Data, Security). Familiarity with both SQL and NoSQL databases using Hibernate or JPA . Experience using AWS services (ECS/EKS, Lambda, CloudWatch). Nice to Have: Knowledge of CI/CD practices, especially using GitHub Actions . Familiarity with design patterns such as Saga . Experience with container orchestration tools. Other Details: Location: Warsaw Work Schedule: Full time with a specification of 18.5 days work on service order requiring holidays during assignment. Team Interaction: Consultants’ teams meet every 2 weeks; client visits every 3 months. Remote Work: BYOD policy, no travel required.

🏢 Summary: 100% remote B2B opportunity to lead a development team in building and maintaining scalable applications within an agile environment. The role combines hands-on full-stack development with strategic technical leadership, focusing on robust system architecture and faster delivery of new solutions. Long-term cooperation with a two-stage recruitment process including a technical test. 🗂️ Requirements: Proficiency in .NET, Proficiency in C#, Experience in full-stack development, Experience with front-end technologies, Experience with document-based databases, Knowledge of event-based messaging frameworks, Experience with cloud services, Experience with containerization, Ability to lead development teams, Experience working in agile environment 📃 Skills: .NET, C#, Angular, MongoDB, Cloud, Docker, Microservices, REST, Git 🏢 Description: Work model: 100% remote Start date: Flexible Rate: up to 215 PLN/h netto + VAT Contract : B2B, long-term cooperation (12-month contract up front + extensions) Recruitment process : 2 stages, including a technical test estimated to take 2-4 hours. Summary: The role focuses on leading the development team to create new solutions and maintain systems within an agile environment, emphasizing the importance of robust applications and strategic direction. Main Responsibilities: Lead the development team in creating and maintaining applications. Adopt wider technology practices and address the speed of new application delivery. Engage in hands-on development while guiding the strategic direction of projects. Collaborate with teams to gather specifications and perform technical analysis. Navigate complex systems and ensure they are built to scale. Manage developer quality and capacity amidst organizational constraints. Key Requirements: Proficient in .NET and C#. Experience with full-stack development, including front-end technologies. Familiarity with document-based databases. Knowledge of event-based messaging frameworks. Experience with cloud services and containerization. Nice to Have: Prior experience in the banking or financial services sector. Familiarity with Angular or other modern front-end frameworks. Experience with MongoDB or similar environments. Other Details: Environment: .NET, C#, Angular, MongoDB, moving towards cloud solutions. Team Structure: Full Stack Developers working closely with Business Analysts.

🏢 Summary: Remote-first Scala Developer role focused on building scalable and maintainable systems using functional programming and modern JVM technologies. The offer includes flexible cooperation, strong engineering culture, and work on projects involving distributed systems, Big Data, and Blockchain. Candidates will design and develop high-quality software in small, technically driven teams. 🗂️ Requirements: Very good Scala skills, Strong functional programming knowledge, Ability to write clean and testable code, Minimum 4 years of commercial software development experience, Understanding of software architecture patterns, Ability to design scalable and maintainable systems, Knowledge of industry trends, Team collaboration skills, Very good English (spoken and written), Polish language proficiency 📃 Skills: Scala, Akka, Zio, Cats, Slick, Blockchain, Cassandra, MongoDB, Kafka, JVM 🏢 Description: Our cooperation offer: Remuneration ranging from 125 to 185 PLN net per hour for start 100% remote company with a remote-first mindset Flexible cooperation from any location and without strict schedule Professional development and freedom in choosing the toolset and tech stack Learning-culture expressed by in-house trainings, technical and soft-skills reading clubs and Architecture club Access to many AI tools (Claude, OpenAI, Cursor, Gemini, Copilot, etc.) Leadership and soft-skills in-house trainings English courses Small to medium teams with as little procedures as possible Best tools you need to make our cooperation effective and pleasurable: monitor(s), computer of your choice Dev-friendly environment with passionate and skilled people who believe in clean code and software craftsmanship - you will have a chance to meet some of them during the selection process Interesting projects with technologies like Scala, Akka, Zio, Cats, Slick, Blockchain, Cassandra, MongoDB, Apache Kafka What we expect: Very good Scala skills and functional programming knowledge Ability to write clean and testable code At least 4 years of commercial experience in developing software Understanding of different types of software architecture Ability to design with scalability and maintainability in mind Comprehensive knowledge and understanding of the industry trends Team collaboration ability Good knowledge of English is a must (both spoken and written), we cooperate with clients from all over the world (USA, Australia, Switzerland, etc.) Polish language is required, as internally we are a Polish speaking company Nice to have: Actor model and Akka / Pekko Knowledge of a second JVM language Experience in using AI in software development and deployment cycle Engagement in the IT community: personal blog, speaking at meetups/conferences, involvement in the open-source projects Having a pet-project Interest in Big Data, Machine Learning and/or Blockchain

🏢 Summary: Senior Software Engineer role focused on building a real-time AI platform, owning features end-to-end across frontend, backend, and cloud infrastructure. The position involves developing full-stack solutions and contributing to technical architecture in a remote-first startup environment. 🗂️ Requirements: Strong experience with TypeScript, Strong experience with React, Hands-on experience with AWS, Experience with Docker, Experience with Linux, Experience with Git, Fluent English 📃 Skills: TypeScript, React, AWS, Docker, Linux, Git, Express, Tailwind, WebSockets, LangChain 🏢 Description: 💰 Salary: 25 000 – 28 000 PLN net/month (B2B) + 26 days paid annual leave + equity (ESOP) 📍 Location: Remote (Poland) + meetup in Poznań once per month Our client is an early-stage startup building a real-time AI platform that supports professionals during live conversations. The system processes interactions in real time and delivers contextual insights, knowledge, and guidance while conversations are happening. The founding team has strong experience in distributed systems, AI platforms, and enterprise SaaS and is currently expanding the engineering team to accelerate product development. Role The client is looking for a Senior Software Engineer who enjoys owning features end-to-end, from frontend interfaces to backend services and cloud infrastructure. You will work closely with the founding team on building a real-time AI-powered product , contributing to both product development and technical architecture. Responsibilities Build full-stack features using TypeScript Develop React-based user interfaces Design and maintain backend services and APIs Work with AWS cloud infrastructure Build and run Docker-based services Improve performance and reliability of real-time systems Requirements Strong experience with TypeScript and React Hands-on experience with AWS Experience with Docker and Linux Comfortable working with Git workflows Fluent English Experience working in remote teams Nice to Have Express Tailwind CSS Experience with real-time systems Knowledge of WebSockets / streaming Experience with LLM frameworks (e.g. LangChain) What the Client Offers Opportunity to build a product from an early stage Direct influence on architecture and product direction Work with experienced founders Remote-first environment Competitive salary + equity High level of ownership and autonomy

🏢 Summary: Senior Java / Full-Stack Developer role focused on designing, implementing, and maintaining modern applications within a mature software architecture. The position involves backend development in Java, frontend work with modern frameworks, and participation in the full software lifecycle in an agile environment. Optional responsibilities include software architecture design, CI/CD pipeline development, and technical leadership. 🗂️ Requirements: Degree in Computer Science or equivalent professional experience, Strong professional experience in modern application development, Very good knowledge of Java and backend web services, Experience with relational and transactional databases, Experience with automated unit or integration testing, Practical experience with agile methodologies, Familiarity with Git or SVN and collaboration tools like Jira and Confluence, Solid understanding of architecture standards and best practices, English proficiency at minimum B2 level 📃 Skills: Java, SQL, REST, Angular, React, Git, SVN, Jira, Confluence, CI/CD, Cloud, JUnit, API, Databases 🏢 Description: We are looking for a Senior Java / Full-Stack Software Developer ! We offer: Salary: 150-180 PLN net/hour on B2B. Remote work from Poland. Responsibilities: ·       Design and implement new features and requirements in Java ·       Integrate solutions into an existing, mature software architecture ·       Participate in all phases of the software lifecycle: ­   Planning and technical conception ­   Implementation and testing ­   Maintenance and operational support ·       Ensure quality, stability, and maintainability of the software ·       Develop backend components (Java, databases, services, APIs) ·       Contribute to modern frontend development (e.g. Angular, React) ·       Actively collaborate within an agile, cross-functional team ·       Apply architectural standards, best practices, and clean code principles Optional: Architecture Responsibilities (Senior / Architect Track) Depending on experience and interest, you may additionally: ·       Design and further develop the overall software architecture ·       Select appropriate frameworks, tools, and cloud solutions ·       Take responsibility for complex systems and end-to-end solutions ·       Shape CI/CD pipelines and technical standards ·       Act as a technical point of contact and mentor for the team We are looking for: ·       Degree in (Business) Computer Science, or vocational training as IT Specialist, or comparable professional experience ·       Strong professional experience in developing modern applications · Very good knowledge of Java, including backend and web services ·       Experience with relational and transactional databases ·       Experience with automated tests (unit and/or integration tests) ·       Practical experience with agile development methodologies ·       Familiarity with version control and collaboration tools (e.g. Git/SVN, Jira, Confluence, common IDEs) ·       Solid understanding of architecture standards and best practices · English language skills (written and spoken), minimum B2 ·       Ability to work independently ·       Team-oriented mindset and customer-focused thinking Nice to Have: ·       Experience with Angular, React, or similar frontend frameworks ·       Exposure to financial systems or securities trading ·       Experience with CI/CD pipelines and cloud-based architectures ·       Background in long-lived enterprise or regulated systems Ta rola nie jest dla Ciebie, ale masz znajomego, który by się sprawdził? Poleć go i zgarnij nawet 5000 zł. Referral Program: Talent from your network Don't hesitate and apply now!

🏢 Summary: Remote Senior Java Developer role focused on designing and implementing new functionalities in distributed systems using Spring ecosystem. The position involves developing REST APIs, writing automated tests, and working according to SOLID, GRASP, TDD, and DDD principles. Offered rate is 120–140 PLN/h on B2B contract. 🗂️ Requirements: Minimum 5 years of commercial experience in Java, Very good knowledge of Java, Practical experience with Spring Framework, Practical experience with Spring Boot, Experience in building distributed systems, Knowledge of SOLID and GRASP principles, Practical knowledge of TDD, Practical knowledge of DDD, Experience with REST API development, Ability to create automated tests, Knowledge of coding standards 📃 Skills: Java, Spring, SpringBoot, REST, TDD, DDD, SOLID, GRASP, Microservices, JUnit 🏢 Description: 📍 Lokalizacja: zdalnie 💰 Wynagrodzenie: 120-140 PLN/h Oczekiwania: min. 5 lat doświadczenia komercyjnego w programowaniu w Java, Bardzo dobra znajomość programowania w języku Java, Praktyczna znajomość Spring Framework, Spring Boot, Doświadczenie w tworzeniu systemów rozproszonych, Znajomość i praktyczne wykorzystywanie zasad SOLID, GRASP, Praktyczna znajomość TDD, DDD, Praktyczna znajomość API REST, Samodzielność i nastawienie na realizację celów, Umiejętność współpracy z innymi. Obowiązki: Projektowanie i implementacja nowych funkcjonalności na podstawie wymagań, Tworzenie i aktualizacja dokumentacji projektowej, Szacowanie wymaganego nakładu pracy dla realizowanych zagadnień, Raportowanie postępu w trakcie cyklicznych spotkań, Aktywne uczestniczenie w spotkaniach projektowych, Tworzenie automatycznych testów, Przestrzeganie ustalonych przez Wykonawcę zasad dotyczących standardów kodowania Oferujemy: Stawka do 140 zł/h netto na b2b Przelew w dogodnej formie Krótki 14-dniowy termin płatności faktury Bogaty pakiet usług prywatnej opieki medycznej Dostęp do platformy kafeteryjnej MyBenefit (umożliwiającej zamawianie kart Multisport, kart przedpłaconych do Ikea, Zalando, Notino i wielu innych)