Java Developer with Vaadin
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 Polska to czołowy dostawca doradztwa technologicznego, transformacji cyfrowej oraz usług biznesowych i inżynieryjnych. Firma obecna jest na rynku od 2006 roku, zatrudnia ponad 7 300 ekspertów, jedenastokrotnie zdobył...
Java Developer with Vaadin
Java Developer with Vaadin