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Java Architect - loyalty (f/m/x)
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Offer summary

(Summary generated by AI based on the full job description)

The project targets a large-scale Java application for Germany’s largest loyalty program. The tech stack includes Java 17/21, Spring/Spring Boot and Docker, with optional AWS. Responsibilities cover analyzing requirements and production issues, designing solutions within an enterprise monolith, developing and maintaining cloud-deployed application, owning end-to-end feature delivery, creating automated tests and supporting architecture and CI/CD. Strong experience in large enterprise systems and fluency in Polish and English are required.

Java Architect - loyalty (f/m/x)

Company: Sii Sp. z o.o.

from: 15 October 2026
to: 14 November 2026
salary not specifiedB2B contract
Offer parameters
level:expert
working mode:remote • hybrid • full office
Białystok, Centrum
Białystok, CentrumJózefa Marjańskiego 3View on map

Requirements

Expected technologies

Java
Docker

Optional technologies

AWS

Our requirements

  • Minimum 10 years of professional experience in backend software development
  • At least 5 years of hands-on experience with Java in large-scale enterprise applications and complex codebases
  • Solid knowledge of Java, Spring/Spring Boot, object-oriented design principles, and clean code practices
  • Experience with Java 17/21 and Docker
  • Strong understanding of application architecture, performance optimization, and maintainability
  • Experience with automated testing, including unit and integration tests
  • Familiarity with CI/CD pipelines and modern software delivery practices
  • Advanced level of Polish and English and residency in Poland

Optional

  • Experience working with AWS Cloud or another major cloud provider

Your responsibilities

  • Develop and maintain a large-scale Java application running in the cloud
  • Analyze business requirements and production issues to design robust, maintainable solutions
  • Contribute to the continuous evolution of a complex enterprise monolith
  • Own features end to end, from requirements analysis through implementation, testing, deployment, and production support
  • Collaborate closely with business stakeholders, product teams, and other engineers
  • Communicate technical concepts and solution proposals clearly to both technical and non-technical audiences
  • Create and maintain automated tests to ensure software quality and support continuous delivery
  • Contribute to application architecture by supporting architectural design and proposing improvements

About the project

We are looking for a Java Architect to join a team working on a large-scale Java application for Germany's largest loyalty program. In this role, you will analyze business requirements and production issues to design robust and maintainable solutions within a complex enterprise monolith. You will own features end-to-end, collaborating closely with business stakeholders, product teams, and other engineers to ensure high-quality software delivery. If you are passionate about developing innovative solutions and have a strong technical background, this opportunity may be the right fit for you.
This offer requires working from the client's office in Warsaw once a month.

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration
Company

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

  • 1.
    Send your CV
  • 2.
    Talk to us about your expectations
  • 3.
    Learn more about our projects and choose the best
  • 4.
    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 7 300 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.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work

Java Architect - loyalty (f/m/x)
I apply to:
Sii Sp. z o.o.
Białystok, Centrum
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