April 8, 2026

Java Developer

Mid • Remote

We are a software house delivering projects for international clients, and we are looking for Mid / Senior Java Developers to join our team.

Responsibilities:

  • Designing and writing clean, scalable code (primarily Java 17/21 + Spring Boot 3)

  • Creating and maintaining REST APIs (OpenAPI / Swagger)

  • Working with relational databases (PostgreSQL + advanced SQL)

  • Implementing solutions using NoSQL (MongoDB / Redis / DynamoDB – preferred)

  • Working with CI/CD (GitHub Actions / GitLab CI / Jenkins)

  • Refactoring and improving existing code

  • Code reviews and knowledge sharing within the team

Requirements:

Must have:

  • Minimum 5 years of commercial experience in Java

  • Very good knowledge of Spring → Spring Boot → Spring Data / Security / Cloud

  • Hibernate / JPA at the level "I can explain what @EntityGraph and dirty checking do"

  • Solid SQL knowledge + experience with PostgreSQL

  • Understanding of REST, HTTP, authentication (JWT / OAuth2)

  • Practical knowledge of at least one NoSQL database (Mongo / Redis / Cassandra / Dynamo)

  • Git + CI/CD basics

  • Very good knowledge of OOP principles and clean code

Preferred (will earn big + points):

  • Java 21, virtual threads, records, sealed classes

  • Testing (JUnit 5 + Mockito / Testcontainers / Pact)

  • Docker + Kubernetes / OpenShift (at least the basics)

  • Message brokers (Kafka / RabbitMQ)

  • Monitoring (Prometheus / Grafana / ELK)

  • Experience in domain-driven design / hexagonal / clean architecture

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Warsaw, Poland

19,000 - 24,000 PLN

🏢 Summary: Role for a Mid+/Senior Java Backend Developer focused on designing and building scalable backend systems and REST APIs in a microservices architecture. The position involves architectural decisions, code quality ownership, and collaboration in an international Agile environment. Opportunity to impact global digital products and engineering standards. 🗂️ Requirements: 6+ years experience as Java Developer, Strong knowledge of Java, Experience building REST APIs, Experience with microservices architecture, Knowledge of relational or NoSQL databases, Experience with cloud platforms (GCP preferred), Experience with Docker and Kubernetes, Knowledge of design patterns, Experience with unit and integration testing, Experience working in Agile methodologies, Very good English skills 📃 Skills: Java, REST, Microservices, PostgreSQL, MySQL, MongoDB, GCP, Docker, Kubernetes, JUnit, Agile 🏢 Description: Dołącz do międzynarodowego zespołu technologicznego pracującego nad rozwojem nowoczesnych produktów cyfrowych, które mają realny wpływ na globalny biznes i procesy operacyjne. Szukamy doświadczonego Java Developera (Backend) który chce budować skalowalne systemy i mieć wpływ na architekturę oraz standardy technologiczne. Stanowisko: Java Developer (Mid+/Senior). Lokalizacja biura: Warszawa. 🛠 Stack technologiczny: Java, Microservices, REST API, Docker, Kubernetes, GCP, PostgreSQL, MySQL, MongoDB. Osoba na tym stanowisku będzie odpowiedzialna za projektowanie, rozwój i utrzymanie wydajnych oraz skalowalnych systemów backendowych. Będzie współpracować z zespołami produktowymi i technologicznymi w środowisku międzynarodowym oraz mieć realny wpływ na kierunek rozwoju rozwiązań. Zadania: Projektowanie i rozwój backendu oraz API (REST) Tworzenie skalowalnych mikroserwisów Dbanie o jakość kodu (code review, testy, dobre praktyki) Współpraca z frontendem, Product Ownerem i innymi interesariuszami Rozwiązywanie problemów produkcyjnych i optymalizacja systemów Wdrażanie i promowanie dobrych praktyk inżynierskich Mentoring mniej doświadczonych developerów Udział w decyzjach architektonicznych Wymagania: Ponad 6 lat doświadczenia jako Java Developer Bardzo dobra znajomość Java Doświadczenie w budowie REST API i mikroserwisów Znajomość baz danych (np. PostgreSQL, MySQL, MongoDB) Doświadczenie z chmurą (preferowana GCP ) Znajomość Dockera i Kubernetes Znajomość wzorców projektowych i dobrych praktyk Doświadczenie w testowaniu (unit/integration) Praca w metodykach Agile Bardzo dobra znajomość języka angielskiego Mile widziane: Znajomość: .NET / Python / Node.js Firma oferuje: Udział w projektach o globalnym zasięgu i realnym wpływie na biznes Pracę w doświadczonym, międzynarodowym zespole Możliwość wpływu na architekturę i standardy technologiczne Hybrydowy model pracy (2 dni w tygodniu praca z biura) Stabilne zatrudnienie i atrakcyjny pakiet benefitów Możliwość rozwoju technicznego i mentoringowego