Java Developer

Quick Facts

• Role: Java Developer (backend)

• Work mode: Hybrid (1 day per week onsite in Warsaw)

Description

You will design, develop, and maintain Java-based backend applications, including implementing new functionality and evolving integrations between banking systems.

The role focuses on building and improving REST APIs for web, mobile, and internal systems, along with participating in microservices architecture, code reviews, and solution optimization. You will collaborate with analysts, architects, testers, and DevOps teams.

Responsibilities

• Develop and maintain Java backend applications

• Implement new features and integration capabilities for banking systems

• Create and evolve REST APIs for web, mobile, and internal systems

• Collaborate with analysts, architects, testers, and DevOps teams

• Participate in architecture design, perform code reviews, and optimize solutions

Requirements

• Minimum 5 years of commercial experience as a Java Developer

• Very good knowledge of Java 17+, Spring Boot, Spring MVC, Spring Data JPA, and Hibernate

• Experience designing and developing microservices architecture

• Experience creating and integrating REST APIs and SOAP

• Practical knowledge of Oracle, PostgreSQL, and SQL

• Experience with Kafka or RabbitMQ

• Knowledge of Git and CI/CD tools

• Experience working in Agile/Scrum

• Experience writing unit and integration tests (JUnit, Mockito)

• Knowledge of application security topics (OAuth2, OpenID Connect, JWT, OWASP Top 10)

• Experience delivering projects for banking/financial sector

• Nice to have: OpenAPI/Swagger, GitLab CI, Jenkins, or GitHub Actions, and experience with high-availability and large-scale systems

Benefits

• Opportunity to work on diverse projects across Software, Embedded, Data, and Cloud Services

• Involvement in additional pre-sales and expert initiatives

• Access to medical care, a sports card, and a cafeteria platform according to cooperation rules