Java Architect - loyalty (f/m/x)

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.

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

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

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

This is how we work on a project

• Continuous Deployment
• Continuous Integration

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 7 300 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