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SZUKAJ
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Backend Developer
Warsaw
Nazwa pozycji
Backend Developer
Lokalizacja
Warszawa
, Warsaw, Masovian Voivodeship, Polska
Firma
Raiffeisen Tech
Dodano
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
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