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Senior Java Software Engineer
  • Warsaw
Senior Java Software Engineer
Warszawa, Warsaw, Masovian Voivodeship, Polska
SIX Group Services Ltd.
25. 2. 2025
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SIX drives the transformation of financial markets.

What sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us.

Senior Java Software Engineer

Warsaw | up to 60% working from home | Reference 6719

As part of the IT organization serving the Financial Information business unit, we are continuously improving our customers experience.

Our application intakes data from a variety of sources (batched and streamed). A process of data integration is applied to unify all our sources under the same form. This information is provided to our clients through a dynamic API using the latest web technologies.

Are you passionate about modern technology and solving problems? Do you want to work in an agile, self-organized environment where collaboration, trust, innovation, and continuous improvement are paramount? Then, our motivated software development team wants to hear from you.

What You Will Do

  1. Execute full lifecycle software development.
  2. Collaborate with the product owner and other team members to provide suitable software solutions to requirements.
  3. Ship high-quality, thoroughly reviewed code on time.
  4. Actively participate in regular Scrum ceremonies and provide recommendations for continuous improvement.
  5. Maintain and support the software in production.
  6. Have on-call responsibilities.

What You Bring

  • Degree in Computer Science or a similar field with 5+ years of software/information systems development experience using technologies like: Java, Spring WebFlux, Reactor, and Websockets.
  • Backend knowledge, mainly API oriented (REST, GraphQL) is a must. Frontend knowledge in React would be an advantage.
  • Good to excellent experience in high volume data processing and delivery scalability and performance. Ideally, real-time market data streaming and market data knowledge would be highly appreciated.
  • Strong sense of quality through integration tests and unit tests.
  • DevOps skills would be an advantage.
  • Agile software development methodologies familiarity and customer orientation.

If you have any questions, please call Gabriela Swiatek at +48 22 104 67 70 / +41 58 399 42 33 / +34 91 330 51 49.

For this vacancy, we only accept direct applications in English.

Diversity is important to us. Therefore, we are looking to receive applications regardless of any personal background.

What We Offer

Flexible Work Models

We trust our employees and offer a work environment that is well-balanced, productive, and fosters success.

Personal Development

You will benefit from a culture of continuous learning and feedback. Your personal growth is supported through an extensive learning offering.

Agile Working Methods

Whether through scrum or design thinking, we solve exciting tasks together in teams.

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