Senior Java Architect - Loyalty Platform | Cloud, End-to-End

Sii Poland; Katowice; Hybrid; PLN 240,000 - 320,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Job summary

Sii Poland seeks a Java Architect to join a team delivering a large-scale Java application for Germany's largest loyalty program. You will analyze requirements, design robust solutions, and own features end-to-end within an enterprise monolith.

Collaboration with business stakeholders, product teams, and engineers will be essential to ensure high-quality software delivery. The role requires working from the client's office in Warsaw once a month and a strong background in backend Java, Spring

Qualifications

• Extensive backend experience in large-scale enterprise apps.
• Minimum 10 years in backend development.
• 5+ years with Java in large-scale enterprise apps.
• Strong knowledge of Java, Spring/Spring Boot, OO design, clean code.
• Experience with Java 17/21 and Docker.
• Understanding of architecture, performance, maintainability.
• Experience with automated testing (unit/integration).
• Familiarity with CI/CD and modern delivery practices.
• Fluent Polish and English; residency in Poland.

Responsibilities

• Develop and maintain a large-scale Java application in the cloud.
• Analyze requirements and production issues to design robust solutions.
• Contribute to evolution of a complex enterprise monolith.
• Own features end to end from analysis to deployment and support.
• Collaborate with stakeholders, product teams, and engineers.
• Communicate technical concepts clearly to technical and non-technical audiences.
• Create and maintain automated tests for quality and CD.
• Support architectural design and propose improvements.

Skills

Java

Spring/Spring Boot

Architectural design

Clean code

Testing (unit/integration)

Tools

Docker

Job description

Sii Poland seeks a Java Architect to join a team delivering a large-scale Java application for Germany's largest loyalty program. You will analyze requirements, design robust solutions, and own features end-to-end within an enterprise monolith.

Collaboration with business stakeholders, product teams, and engineers will be essential to ensure high-quality software delivery. The role requires working from the client's office in Warsaw once a month and a strong background in backend Java, Spring