Java Cloud Developer (f/m/x)

Senior • Hybrid

20,000 - 24,000 PLN

Warsaw, Poland

We are looking for an experienced Java Cloud Developer to join a dynamic team delivering modern digital solutions for business clients. You will be part of a product area focused on virtual card services and digital platforms that support innovative business models such as Click & Collect and fleet management solutions.

Those systems enable end-to-end management of payments and communication with business customers, including fueling, car wash services, invoicing, and card/account management. The portfolio spans both mobile and web applications, as well as external APIs (e.g., Payment-as-a-Service), serving primarily Scandinavian and Baltic markets. You’ll work across a mix of greenfield development and enhancements to existing systems.

Your tasks

Design and implement new features and system improvements
Ensure software quality through testing and validation against requirements
Diagnose, troubleshoot, and resolve technical issues
Collaborate with cross-functional teams in an agile environment
Participate in team ceremonies and contribute to technical discussions
Prepare and maintain technical documentation

Requirements

At least 4 years of hands-on experience in Java development
Strong knowledge of frameworks and tools: Spring (Boot, Data, Cloud), JUnit, Spock, JPA, Hibernate
Solid experience with PostgreSQL, SQL, NoSQL databases, and Redis
Practical experience with cloud and containerization technologies (Azure, Kubernetes, Docker)
Experience building and integrating REST/SOAP APIs, including Swagger/OpenAPI documentation
Familiarity with CI/CD and development tools: Jenkins, SonarQube, Git, Gradle
Very good communication skills in both English and Polish
Residing in Poland required

Nice-to-have requirements

Knowledge of TDD/BDD practices, e.g., Spock, Mockito, Cucumber
Basic understanding of Domain-Driven Design (DDD)
Familiarity with service mesh architectures

What we offer

Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People

If you want to work on systems with high operational significance — apply now!

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."

Check if your resume is ATS-ready before applying →Build an ATS-optimized resume