Java Developer – SonarQube Integration & Quality Engineering (m/f/d) - 12 Month Contract

Java Developer – SonarQube Integration & Quality Engineering (m/f/d)

Hamburg, Germany (40% on‑site / 60% remote) · €90,000–€110,000 gross p.a. · 12‑month contract (AUG) · Start: September 2026

About the role

We're hiring a Java Developer / Code Quality Engineer to lead SonarQube integration across the CI/CD pipeline of a large‑scale enterprise Java application for a confidential end client — a major German statutory health insurer based in Hamburg. You'll own the design and rollout of SonarQube Quality Gates, custom rules, and plugin development, working inside a cross‑functional Scrum/Kanban team of developers, QA engineers, and DevOps specialists.

This is a hands‑on, high‑autonomy role for someone who can walk into a complex, established codebase and start delivering fast — no lengthy ramp‑up, no hand‑holding.

What you’ll do

• Analyze existing CI/CD pipelines (Maven/Gradle, Jenkins, GitHub Actions) and design the SonarQube integration architecture
• Build out SonarQube Quality Gates, pull request analysis, and branch strategy configuration
• Assess and migrate legacy, proprietary QA/static‑analysis checks into SonarQube — deciding what’s replaced, retired, or rebuilt
• Develop custom SonarQube plugins, rules, and quality profiles (Java‑based)
• Coach development teams on interpreting SonarQube results and reducing technical debt
• Maintain build/pipeline stability across Git/GitHub, artefact repositories, and CI/CD servers

What you’ll need

• Master’s degree in Computer Science, Business Informatics, or equivalent practical experience
• 5+ years of professional Java development, ideally in large, multi‑team enterprise environments
• Proven hands‑on experience with SonarQube in CI/CD — Quality Gates, PR analysis, branch strategies
• Experience building SonarQube extensions: custom rules, plugins, quality profiles
• Track record migrating proprietary static‑analysis/QA tooling into SonarQube
• Strong Maven/Gradle/Git/GitHub and Jenkins/GitHub Actions experience
• Fluent German (C1) — written and spoken, essential for stakeholder alignment
• Comfortable working autonomously in Scrum/Kanban delivery environments

Why this role

• Premium day rate/salary band up to €110,000 gross, with a clear path from €90k to top‑tier based on plugin/extension depth
• High‑impact, high‑visibility mandate — you’re the person consolidating years of legacy QA tooling into a modern standard
• Hybrid flexibility (60% remote) based in Hamburg
• Direct exposure to enterprise‑scale Java architecture and DevOps practice