Senior Java Engineer - Cloud-Native & Microservices

SIX Group Services Ltd.; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible Work Models

Personal Development

Agile Working Methods

Job summary

SIX Group Services Ltd. in Warsaw is seeking a Senior Java Software Engineer to help evolve cloud-based platforms. You will work with an international team to design, build, and modernize high-performance software powering financial services.

You will own architecture decisions, champion technical excellence, and collaborate across product, architecture, and engineering teams in a flexible hybrid work environment.

Qualifications

• Proven experience building large-scale backend applications in Java 17/21.
• Hands-on with Kubernetes/OpenShift and container tech (Docker/Podman).
• Strong understanding of REST APIs, JSON, and Kafka.
• Experience designing and operating microservices.
• Advocate for automated testing, CI/CD, observability, and documentation.
• Experience with GitLab and modern delivery pipelines.
• Professional fluency in English, written and spoken.

Responsibilities

• Drive architecture and design of a scalable, secure application landscape.
• Develop and enhance business-critical Java functionality with cloud-native practices.
• Collaborate with product, architecture, and engineering teams to deliver outcomes.
• Lead performance optimization, reliability, and code quality initiatives.
• Contribute across the software development lifecycle from design to deployment.
• Participate in DevOps activities to operate and improve production services.

Skills

Java 17/21

Kubernetes/OpenShift

REST/JSON/Kafka

Microservices

CI/CD & observability

GitLab

English communication

Job description

SIX Group Services Ltd. in Warsaw is seeking a Senior Java Software Engineer to help evolve cloud-based platforms. You will work with an international team to design, build, and modernize high-performance software powering financial services.

You will own architecture decisions, champion technical excellence, and collaborate across product, architecture, and engineering teams in a flexible hybrid work environment.