.
Backend Developer
  • Warsaw
Backend Developer
Warszawa, Warsaw, Masovian Voivodeship, Polska
Raiffeisen Tech
12. 2. 2026
Informacje o stanowisku

technologies-expected :


  • Java 8/17
  • Spring Boot
  • Hibernate/JPA
  • SQL
  • PostgreSQL
  • Liquibase
  • REST API
  • Swagger/OpenAPI
  • Pulsar

responsibilities :


  • Maintenance and development of web application backends in the financial industry (Java 8/17, Spring Boot, PostgreSQL).
  • Implementation of new end-to-end functionalities on the backend side: REST API, system integrations, business logic, data models.
  • Designing and developing APIs (REST, Swagger/OpenAPI, Pulsar) and ensuring high code quality (JUnit/Spock tests).
  • Performance optimization: SQL queries, Hibernate/JPA, caching, microservice stability.
  • Refactoring legacy code (Java 8, JPA, integrations), improving system stability and readability.
  • Working with CI/CD (Gradle, GitHub Actions, CDA), collaborating with CloudOps on deployments (Kubernetes, AWS/Azure).
  • Monitoring production systems (CloudWatch, Grafana), participation in troubleshooting and operational support.
  • Code review, technical documentation.
  • Collaboration with an international team.

requirements-expected :


  • Min. 3-4 years of experience as a Backend/Java Developer.
  • Very good knowledge of Java 8/17, Spring Boot, Hibernate/JPA.
  • Very good knowledge of SQL and PostgreSQL
  • Experience with Liquibase, REST API, Swagger/OpenAPI, Pulsar (or other message broker).
  • Practice in unit testing (JUnit 5 / Spock).
  • Experience working in Scrum.
  • Very good English.
  • Proactivity, responsibility, ability to work in a team.
  • Kubernetes, AWS/Azure, OAuth2/JWT, Elasticsearch.
  • Knowledge of microservices architecture and backend performance optimization.

benefits :


  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • sharing the costs of professional training & courses
  • life insurance
  • remote work opportunities
  • flexible working time
  • fruits
  • integration events
  • corporate sports team
  • no dress code
  • coffee / tea
  • extra social benefits
  • employee referral program

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


    115 886
    19 661