Java Software Engineer

LanceSoft Europe; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

LanceSoft Europe is seeking a Software Engineer (Java) in Warsaw, Poland, for a 12-month contract with extensions. You will build and scale cloud-native, event-driven microservices, leveraging DevOps practices and AI-assisted workflows.

The role requires on-site presence 3–4 days per week. Ideal candidates have 3+ years in backend Java/Spring Boot, with Kafka, Docker/Kubernetes, and GitLab CI/CD experience, plus familiarity with Prometheus, Grafana, ELK and AI tools like GitHub Copilot and

Qualifications

• 3+ years of backend development with Java and Spring Boot.
• Production experience with Kafka, Docker and Kubernetes.
• Experience with GitLab CI/CD and observability stacks (Prometheus, Grafana, ELK).
• Familiarity with AI developer tools (e.g., GitHub Copilot, Claude).
• BS in Computer Science (or equivalent) and strong problem-solving skills.

Responsibilities

• Develop and scale cloud-native, event-driven microservices.
• Collaborate with DevOps to implement robust CI/CD pipelines.
• Enhance observability and AI-assisted workflows across services.

Skills

Java

Spring Boot

Kafka

Docker

Kubernetes

GitLab CI/CD

Prometheus

Grafana

ELK

AI developer tools

GitHub Copilot

Claude

Education

BS in Computer Science

Job description

Build and scale cloud-native, event-driven microservices using modern DevOps and AI-assisted workflows.

Job Title: Software Engineer (Java)

Location: Warsaw, Poland - 3/4 days on-site per week

Duration: 12 Months Contract + Extension

Must-Haves

• 3+ years in backend development with Java and Spring Boot.
• Production experience with Kafka and Docker / Kubernetes.
• Practical use of GitLab CI/CD and observability stacks (Prometheus, Grafana, ELK).
• Familiarity with AI developer tools (e.g., GitHub Copilot, Claude).
• BS in Computer Science (or equivalent) and strong problem-solving skills.

Bonus Points

• Argo CD / GitOps workflows.
• Domain knowledge in securities settlement or post-trade processing.