Java Architect - loyalty (f/m/x)

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 tasks
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
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
Nice to have
Experience working with AWS Cloud or another major cloud provider
Job no. JOB-T883W
Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.
Benefits For You
Great Place to Work
Solid financial situation
Contracts with the biggest brands
Centre of internal trainings
Many experts you can learn from
Open and accessible management team
Profit sharing
Passion Sponsorship program
Regular integration events and trips
Comfortable and well-equipped offices
MySii app
Medical care

Work arrangement
Yes