Senior Java Architect - Loyalty Platform | Profit Sharing

Sii Poland; Poznań; Hybrid; PLN 260,000 - 360,000; Full time

Benefits offered by this job

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

Job summary

Sii Poland is seeking a seasoned Java Architect to join a team delivering a large-scale Java application for a major German loyalty program. You will analyze requirements and production issues to design robust, maintainable solutions within an enterprise monolith and own features end-to-end.

You will collaborate with business stakeholders, product teams, and other engineers, and contribute to architecture by proposing improvements. Warsaw office visit once a month is required.

Qualifications

• 10+ years of professional experience in backend software development.
• At least 5 years of hands-on experience with Java in large-scale enterprise applications.
• Knowledge of Java, Spring/Spring Boot, OO design and clean code.
• Experience with Java 17/21 and Docker.
• Strong understanding of architecture, performance, maintainability.
• Experience with automated testing (unit and integration).
• Familiarity with CI/CD pipelines and modern delivery practices.
• Advanced level of Polish and English; residency in Poland.

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 evolution of a complex enterprise monolith.
• Own features end to end, from requirements analysis through implementation, testing, deployment, and production support.
• Collaborate with business stakeholders, product teams, and other engineers.
• Communicate technical concepts clearly to both technical and non-technical audiences.
• Create and maintain automated tests to ensure software quality and support continuous delivery.
• Support architectural design and improvements.

Skills

Java

Spring Boot

OO design

Clean code

Automated testing

CI/CD

Performance optimization

Polish

English

Tools

Docker

Job description

Sii Poland is seeking a seasoned Java Architect to join a team delivering a large-scale Java application for a major German loyalty program. You will analyze requirements and production issues to design robust, maintainable solutions within an enterprise monolith and own features end-to-end.

You will collaborate with business stakeholders, product teams, and other engineers, and contribute to architecture by proposing improvements. Warsaw office visit once a month is required.