Senior Java Engineer — Cloud & Enterprise, End-to-End

Sii Poland; Województwo pomorskie; On-site; PLN 230,000 - 290,000; Full time

Benefits offered by this job

Great Work Environment

Medical care

Regular integration events and trips

Centre of internal trainings

Profit sharing

Job summary

Sii Poland is seeking an experienced Senior Java Developer to join a large-scale Java application project. You will analyze business requirements and production issues, design robust solutions, and collaborate with stakeholders and product teams to deliver high-quality software.

You will own features end-to-end—from analysis through testing, deployment, and production support—while contributing to automated testing and engineering best practices in a complex enterprise environment.

Qualifications

• 8+ years of Java backend experience in large-scale enterprise applications.
• Solid knowledge of Java, Spring/Spring Boot, OO design and clean code.
• Experience with AWS or another major cloud provider.
• Strong understanding of architecture, performance and maintainability.
• Experience with automated testing (unit/integration).
• Familiar with CI/CD pipelines and modern delivery practices.
• Excellent communication skills with technical and business stakeholders.
• Advanced level of Polish and English.

Responsibilities

• Develop and maintain a large-scale Java application running in the cloud.
• Analyze business requirements and production issues to design robust, maintainable solutions.
• Own features end-to-end from analysis to deployment and production support.
• Collaborate with business stakeholders, product teams, and other engineers.
• Communicate technical concepts clearly to diverse audiences.
• Create and maintain automated tests to support continuous delivery.
• Document architectural decisions and implementation approaches.
• Participate in code reviews and contribute to engineering best practices.

Skills

Java backend

Spring Boot

Cloud AWS

Architecture

Automated testing

CI/CD

Stakeholder communication

Polish & English

Tools

AWS

CI/CD pipelines

Job description

Sii Poland is seeking an experienced Senior Java Developer to join a large-scale Java application project. You will analyze business requirements and production issues, design robust solutions, and collaborate with stakeholders and product teams to deliver high-quality software.

You will own features end-to-end—from analysis through testing, deployment, and production support—while contributing to automated testing and engineering best practices in a complex enterprise environment.