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Java Developer with Vaadin
  • Warsaw
Java Developer with Vaadin
Warszawa, Warsaw, Masovian Voivodeship, Polska
Sii Sp. z o.o.
4. 12. 2025
Informacje o stanowisku

Java Developer with Vaadin

Miejsce pracy: Warszawa

Technologies we use

Expected

  • Java
  • Vaadin
  • Spring Boot
  • REST
  • JUnit
  • Git

Optional

  • Node.js
  • MongoDB
  • Confluence

About the project

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.

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

Your responsibilities

  • 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

Our 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
  • Willingness to work onsite 2 days per week at the Warsaw office
  • Fluent Polish required
  • Residing in Poland required

Optional

  • 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 – you can change them thanks to Job Changer application
  • 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

Recruitment stages

  • Send your CV
  • Talk to us about your expectations
  • Learn more about our projects and choose the best
  • Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.

The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment.

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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