Java Developer with Vaadin

Senior • Remote

Warszawa, Poland

We are looking for a Java Developer with strong Vaadin expertise to join a team responsible for developing and maintaining advanced internal systems used within a leading high-tech company. Our team focuses on innovation, reliability, and continuous improvement of processes that directly impact the efficiency of R&D operations.

We build solutions used widely across engineering teams, as well as dedicated tools supporting specific business areas.

Your tasks

Performing regular updates, patches, and maintenance to ensure high performance and security of internal systems
Troubleshooting and resolving technical issues promptly to minimize downtime and disruptions
Designing, developing, and implementing new features aligned with evolving internal requirements
Proposing improvements to enhance system usability, stability, and efficiency
Supporting planning, scheduling, and tracking development tasks within ongoing projects
Collaborating with team members and cross-functional teams to unify the approach to internal test systems development and maintenance

Requirements

At least 4 years of professional experience in Java development
Strong proficiency in Vaadin and Spring Boot, supported by commercial project experience
Experience in developing and integrating RESTful APIs (Spring MVC, RESTful Web Services)
Practical experience with unit and integration testing (e.g., JUnit)
Solid understanding of Git and experience working with CI/CD pipelines
Strong teamwork, communication, and organizational skills
Creativity, analytical thinking, and the ability to prioritize tasks effectively
English proficiency sufficient for working with technical documentation
Fluent Polish required
Residing in Poland required

Nice-to-have requirements

Experience with Atlassian Confluence
Commercial experience with Node.js or MongoDB

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."