Senior Java Developer

Salary: 1000-1300 PLN/day on B2B

Work model: elastic hybrid from Gdynia / Gdańsk / Warszawa (at least 2 days per week from the office)

Why choose this offer?

• You can expect a flexible work organization
• The international work environment will give you the opportunity to interact with the English language on a daily basis
• Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)
• The Jit community will bring you a nice time during regular integration meetings

Project

We are looking for a Senior Java Developer to join a project in the financial sector focused on building secure, scalable, and high-performance backend solutions. You will work on developing microservice-based applications and RESTful APIs using modern technologies such as Java 21, Spring Boot, and Docker. The project emphasizes clean code, automation, and reliability across the entire software delivery lifecycle.

Responsibilities you'll have

• Design, develop, and maintain backend applications using Java 21, Spring Boot, and Hibernate
• Build and deploy RESTful APIs and microservices in a distributed architecture
• Containerize applications and manage Docker images and containers
• Write clean, maintainable, and testable code following best development practices
• Implement and maintain unit tests using frameworks such as JUnit and Mockito
• Work with CI/CD pipelines and tools like Jenkins or Bamboo
• Collaborate with the team to ensure smooth integration across services and systems
• Monitor and analyze system performance using tools like Prometheus, Grafana, and the ELK stack

Expected competences and knowledge

• Strong proficiency in Java 21 and modern Java features (records, pattern matching, virtual threads)
• Experience with Spring Boot for building RESTful APIs and microservices
• Solid understanding of ORM concepts and hands-on experience with Hibernate
• Familiarity with microservices architecture and distributed system design
• Experience in containerization with Docker
• Proficiency in Git (Bitbucket) and Maven
• Experience working with relational databases such as PostgreSQL or MsSQL
• Understanding of CI/CD practices and the software development lifecycle
• Knowledge of monitoring and logging tools such as Prometheus, Grafana, and ELK stack
• Good understanding of agile methodologies
• Strong problem-solving, analytical, and communication skills
• Ability to work independently as well as collaboratively within a team
• Willingness to learn and adapt to new technologies

Nice to have

• Knowledge of Kubernetes or other container orchestration tools
• Exposure to cloud platforms (AWS, GCP)
• Experience with API documentation tools (Swagger/OpenAPI)
• Experience with ETL / Data Integration, including SSIS (SQL Server Integration Services)
• Understanding of data warehousing concepts and data pipelines

Technologies you'll work with

• Java 21
• Spring Boot
• Hibernate
• Microservices architecture
• RESTful APIs
• Docker
• PostgreSQL, MsSQL
• Maven
• Git (Bitbucket)
• Jenkins
• Bamboo
• JUnit
• Mockito
• Prometheus, Grafana, ELK stack
• Swagger / OpenAPI

Client – why choose this particular client from the Jit portfolio?

Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language. 

About Jit Team

The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme.

Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.