Senior Java Developer
Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets.
At the core of the role
We are looking for a Senior Java Backend Developer to join a long-term project in the Polish banking sector.
You will work on large-scale backend solutions, contributing to the development and evolution of distributed systems and microservices. The role combines hands-on Java development with API and microservice design, integrations, performance, scalability, security and code quality.
Please note that this is a hybrid role. We expect on average 1 day per week from the office, with the following locations available: Warsaw, Łódź, Gdańsk, Wrocław, Poznań, Kraków, Lublin and Szczecin.
The role also requires Polish at B2+/C1 level.
Core skills you’ll bring
Strong commercial experience with Java, ideally Java 17/21
Strong knowledge of Spring Boot and the Spring ecosystem, including Spring MVC, Spring Data JPA and Spring Security
Experience with Hibernate / JPA
Good knowledge of SQL and relational databases such as Oracle, PostgreSQL or MS SQL Server
Experience designing and developing REST APIs
Experience with messaging technologies such as Kafka, JMS or RabbitMQ
Hands-on experience with microservices
Experience with Docker and Kubernetes or OpenShift
Experience with Git, Maven or Gradle and CI/CD
Experience with unit and integration testing
Understanding of application security, scalability and high-availability systems
Fluent Polish
Nice-to-have
Experience in banking, financial services or transactional systems
Knowledge of payment processes
Experience with SonarQube, Nexus or Artifactory
The impact you'll create
Design, develop and maintain backend services using Java and Spring
Design and evolve REST APIs and microservices
Develop synchronous and asynchronous integrations
Contribute to scalable, highly available and secure solutions
Write unit and integration tests and maintain high code quality
Participate in code reviews and technical discussions
Analyse logs, troubleshoot issues and continuously improve existing solutions
What supports your journey
People are at the core of Avenga. We provide equal opportunities regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to a respectful environment where everyone can be themselves, share their ideas, and feel that they belong.
- Location
- Poland
- Remote status
- Hybrid
- Technology
- Java
- Seniority
- Senior-level
Take the first step toward your career at Avenga
APPLICATION
Send your CV to tell us about your core skills and what you're looking for next.
TALENT CALL
Meet our Talent team to talk about your goals and experience while exploring our culture and the way we work.
TECHNICAL INTERVIEW
We'll explore your experience, strengths, and approach to work to see what we can build together.
CUSTOMER INTERVIEW
For some roles, you'll meet our customers to understand the outcomes your expertise can help create.
WELCOME TO AVENGA
An offer is just the beginning. We welcome you to put your expertise into action and shape what's next together.