Opis oferty
Fullstack Engineer (Java/Kotlin + React) w Warszawa, Polska is listed on Jobeax. Browse 110,000+ vacancies available.
What you work on today shapes where you’ll be tomorrow.
Looking for your next challenge as a Fullstack Engineer (Java/Kotlin + React)? We may have the right opportunity for you.
At B3, we start with people and their experience. We match projects to your skills and professional growth path. Our consultants work across a wide range of industries and technologies, delivering IT projects both in Poland and internationally. This allows you to build your career in a deliberate way - not by chance.
We are part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we operate with full autonomy. We choose our technologies, processes, and ways of working while maintaining the highest professional standards.
Join us today.
What we offer
Work in a Scandinavian culture built on logic, trust, and open dialogue.
Health and sports benefits tailored to your needs.
Speed Coaching – short sessions designed to provide new perspectives and solutions.
Sports training, an internal team, and opportunities to take part in competitions.
Key areas of the role:
Backend and APIs - Preparing mocks, designing and adjusting APIs in Java/Kotlin within a microservices architecture, enabling integrations with external strategic partners
Frontend in React - Building responsive web components, checkout funnels and registration paths, and integrating the frontend with the backend and the mobile app
Building new services the startup way - Working in a greenfield area on services that run outside the core market but are integrated with platform services (payments, login, search), delivering fast with the support of AI and agentic development tools
What you need to join us:
Must have:
Good programming skills in Java and/or Kotlin and confidence working with microservices
Hands-on frontend experience: HTML, CSS, JavaScript and modern frameworks (ideally React)
Clear understanding of REST API principles , working with JSON data and consuming backend endpoints
Ease of switching between backend and frontend, a problem-solver mindset , flexibility in a not-yet-defined area and exp. with with AI / agentic development tools
English at B2+ level or higher and Polish
Right to work in Poland (citizenship, residence card, visa, etc.)
Nice to have:
Familiarity with CI/CD tools (GitLab CI, Docker)
Experience with cloud environments
An eye for modern UX/UI standards, accessibility and Responsive Web Design (RWD)
Experience integrating with external systems and partners
Based in or near Warsaw or Poznań (occasional workshops and planning sessions in the office)
Podobne oferty
... wykorzystaniu AI w software engineeringu. Profil stanowiska Doświadczenie komercyjne w tworzeniu oprogramowania na poziomie minimum 3 lat Bardzo dobra znajomość React i TypeScript Doświadczenie backendowe w Kotlinie lub Javie Umiejętność samodzielnego projektowania i dostarczania rozwiązań end-to-end Swoboda korzystania z ...
Poland, Wrocław
550 zł PLN / month
... At least 2 years of experience working as a Frontend Developer or Fullstack Developer with React . - Experience with object-oriented software development in Java . - Knowledge of web development technologies, including HTML, CSS, and TypeScript . - Basic understanding of the React framework, Material U I and concepts such ...
Poland, Łódź
... and IT specialists to join our client's team of experts, supporting the implementation of innovative solutions to significantly enhance customer experiences. Fullstack Mobile Developer ( Kotlin, Java Backend) We offer: - Atractive salary - Remote work Responsibilities: About the company / project - You will join a team developing ...
Poland, Wrocław
26000 - 32000 zł
... and IT specialists to join our client's team of experts, supporting the implementation of innovative solutions to significantly enhance customer experiences. Fullstack Mobile Developer ( Kotlin, Java Backend) We offer: - Atractive salary - Remote work Responsibilities: About the company / project - You will join a team developing ...
Poland, Rzeszów
... design and decision-making Review code and contribute to shared engineering standards We are looking for you, if you have: Proven experience as a Fullstack Engineer working across frontend and backend systems Strong knowledge of modern frontend development (React or Angular) Strong backend development experience (Java + ...
Poland, Warząchewka Polska
VirtusLab in Kraków is seeking a Software Engineer with Data & Quality to own the data quality domain within a key data processing platform. You will identify, analyze, and address data quality issues while designing offline solutions that do not impact production performance. The role blends data engineering, analytics, ...
Poland, Kraków
... przychodzi do nas po to aby się rozwijać. Interesuje nas Twój rozwój, bo z tego czerpiemy satysfakcję, a nasi klienci korzyści. Fullstack Developer / Developerka (Java + Reacr) Miejsce pracy: Warszawa -hybrydowo Jeżeli: posiadasz min. 6-letnie doświadczenie komercyjne w pracy z Java oraz React masz co najmniej 6 lat doświadczenia ...
Poland, Warszawa
18850 - 25900 zł
We also have 30 days of occasional remote work. m. m.
Poland, Kraków
... doświadczonego inżyniera oprogramowania na stanowisko Full Stack, specjalizującego się w mikrofrontendach i mikroserwisach. Praca w środowisku zdalnym, z wykorzystaniem React/TypeScript, Java/Spring Boot i Kotlin oraz praktykami DevOps. Zaangażowanie obejmuje projektowanie interfejsów REST, Kafka oraz integrację narzędzi CI/CD, a ...
Poland, Warszawa
$2k USD
Senior Full-Stack Engineer (Java and React) Important: if an employer asks you to log into their system via iCloud or Google, send a code, an SMS or Telegram password, run some code, or install software — refuse. These are signs of fraud. We are seeking a Senior Full-Stack Engineer with strong expertise in Java, Spring ...
Poland, Wrocław
Britenet in Warsaw is seeking an experienced Java Developer to join a team delivering highly complex solutions. You will design and implement scalable Kotlin-based features and distributed components, with ownership of quality, observability, and technical debt. The role involves integrating AI capabilities with LLMs and ...
Poland, Warszawa
... Warszawie. Preferowane miejsce zamieszkania: Poznań/Warszawa i okolice. Najpóźniejsza data startu: wrzesień. Realizację projektu ułatwi Ci Bardzo dobra znajomość Java i/lub Kotlin, poparta min. 4-letnim komercyjnym doświadczeniem w tworzeniu aplikacji backendowych. Bardzo dobra znajomość Spring Framework oraz Spring Boot. Doświadczenie ...
Poland, Poznań
Diverse CG Sp. z o.o. Sp.k.
... provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Fullstack Java Developer Offer: - Private medical care - Co-financing for the sports card - Constant support of dedicated consultant - Employee referral program ,[Design, ...
Poland, Gdańsk
18850 - 25900 zł
... with: - Commercial experience: 5 years of experience in building and maintaining complex, high-scalability systems. - Strong technical foundation: Proficiency in Java (primary) and Kotlin, with a focus on reactive programming. - Advanced database skills (nice to have): Hands-on experience and advanced knowledge of MongoDB. ...
Poland
B2Bnetwork
... Java Bardzo dobra znajomość Java 17+ Doświadczenie z Spring Boot oraz Spring Integration Doświadczenie w tworzeniu aplikacji backendowych Praktyczna znajomość React lub doświadczenie w pracy fullstackowej Doświadczenie w projektach związanych z przetwarzaniem danych, CRM, marketing automation lub systemami kampanijnymi Bardzo ...
Poland, Warszawa
We are looking for an experienced Senior Java Fullstack Developer to join our team and be responsible for the development, integration, and maintenance of modern backend solutions. Responsibilities Design, develop, and maintain backend applications. Integrate systems and participate in migration projects. Create and develop ...
Poland, Kraków
16800 - 27300 zł
... applicationsEnsure seamless application maintenance and continuous improvement of code quality You're ideal for this role if you have: At least 3 years of experience as a FullStack DeveloperStrong background in Java 11+ (project currently runs on Java 17), JDK 8+, Hibernate, JUnit, Spring Framework (Boot, Batch, Security), and RESTful ...
Poland, Kraków
... oraz integracji synchronicznych i asynchronicznych. Poziom wiedzy i kwalifikacje: Komercyjne doświadczenie w tworzeniu aplikacji w modelu Fullstack (Angular + Java/Spring Boot); Dobra znajomość Angular (doświadczenie z nowszymi wersjami, np. 14–18+, będzie dużym atutem) oraz TypeScript; Praktyczna znajomość Java oraz ekosystemu ...
Poland, Poznań
PZU Tech S.A.
... klientów oraz rozwój nowoczesnych technologii w branży ubezpieczeniowej. Wymagania must have: • Minimum 2–3 lata doświadczenia komercyjnego. • Dobra znajomość Java oraz Spring Framework lub Spring Boot. • Praktyczna znajomość Angulara, TypeScript, RxJS, HTML i CSS. • Doświadczenie z Web Components i Module Federation. • ...
Poland, Warszawa
Poland, Warszawa