Senior Backend Java Developer

Type of work:

• hybrid 2-3 days / 5 days at the Warsaw office
• full-time,
• long time

Role Overview

As a Senior Java Developer, you will design, build, and maintain scalable, secure, and high-performance backend systems. Working closely with cross-functional teams, you’ll drive innovation – including the use of GenAI tools like GitHub Copilot -and mentor other developers.

Key Responsibilities

• Backend & DB: Develop robust, multi-tenant applications using Java 17+, Spring Boot, and PostgreSQL.
• DevOps & Automation: Manage deployments using Docker, Kubernetes, and Helm; automate tasks via Bash/Shell scripting.
• Leadership & Agile: Lead design discussions, mentor peers, and actively participate in Scrum events within a distributed team.

• Java Stack: Java 17+, Spring (Boot, Security), Hibernate/JPA, Maven.
• Data & Cloud: SQL (PostgreSQL), cloud-native application development.
• DevOps & CI/CD: Git/GitHub (pipelines), CI/CD tools, Kubernetes, Helm, Bash.
• Testing: JUnit, AssertJ, Hamcrest.

Skills & Experience:

• 8+ years of professional backend experience (preferably in enterprise environments).
• Degree in Computer Science (or equivalent experience).
• Fluent English (B2/C1) and strong collaboration skills in Agile teams.

Nice-to-Have

• Kafka & Event-driven / Microservices architecture.
• Python, C, or Go (Golang) scripting.
• Monitoring tools (Kibana, Grafana, Prometheus).
• Security best practices (OWASP Top 10) & Jira.