Java Software Engineer

💻 Freelance Java Backend Engineer – Spring Boot | Hybrid Belgium

📍 Location: Belgium (Hybrid – 2 days/week onsite)

📅 Start: ASAP

📆 Contract: 6-month rolling (multi-year scope)

🇪🇺 EU work permit required

🔍 Overview

An established European product company is seeking a freelance Java backend engineer to join one of their core agile feature teams. The business operates in the data-heavy B2B space and is investing heavily in backend scalability, performance, and modular architecture.

This role is ideal for a medior to senior Java engineer who enjoys backend craftsmanship, agile delivery, and contributing to scalable real-world platforms. Expect a clean, modern stack, a professional team culture, and real runway for contract longevity.

🛠 Responsibilities

• Design, develop, and maintain backend microservices using Java + Spring Boot
• Collaborate closely with engineers, product owners, and team leads in a Scrum-based workflow
• Implement clean architecture principles (SOLID, DDD, TDD)
• Work across APIs, data layers, and system integrations
• Contribute to platform stability, performance, and maintainability
• Participate in technical design and team code quality improvements

✅ Required Skills

• 5 years backend experience with Java (8+ ideal), Spring Boot framework
• Solid grasp of software engineering best practices and architectural patterns
• Strong SQL + relational database experience (e.g. PostgreSQL)
• Experience with REST APIs and containerised development workflows
• Familiarity with Git, CI/CD pipelines, and Agile team delivery
• Fluent English communication in cross-functional setups
• Experience with data analytics systems and timeseries workflows
• Clean code practices TDD, SOLID and DDD

🌟 Bonus (Not Mandatory)

• Familiarity with containerisation and deployment
• Angular familiarity
• Dutch language skills (not required)
• Experience with real time streaming, or EDD (event-driven design)

🎯 Why Consider This Role?

• Join a contractor-friendly team building a real product used globally
• 6-month rolling contract with multi-year visibility
• Work with high-quality engineers in a structured agile environment
• Remote-first setup (just 2x per week on-site in Belgium)
• Mid-market rates with senior uplift flexibility

📩 Apply

If you’re a Java engineer who takes pride in scalable architecture, clean code, and delivering in agile squads - this one’s worth a chat.

Email: [email protected]

📬 Interviews ongoing - let’s talk if it’s aligned.