Tech Lead / Senior Java Developer Consultant – Talent Pool

Talent Pool Overview:

Java remains a core technology for many of our clients' back-end systems. We are building a pool of senior Java developers and Tech Leads we can propose quickly for development and modernisation missions. By joining, you will be among the first profiles we contact when a matching mission opens – as soon as a matching client request comes in.

About Keystone Solutions:

Keystone Solutions is a Brussels-based IT consultancy and recruitment company – Bridging Technology & Talent. Organised in five practices (Management Consulting, IT Analysis, IT Development, IT Security and IT Infrastructure), we place experienced IT professionals on missions with leading organisations in Belgium, mainly in banking & insurance, federal and regional public institutions, utilities and industry.

Typical Mission Contexts:

• Back-end development of business-critical applications
• Microservices and API development
• Modernisation of legacy applications
• Agile teams with DevOps and containerisation practices

Typical Responsibilities:

• Design and develop back-end services with Java and Spring Boot
• Build and expose REST APIs and microservices
• As Tech Lead: guide technical choices, code reviews and team coaching
• Contribute to CI/CD, containerisation and quality practices
• Collaborate with architects, analysts and front-end developers (Angular/React)

Must-Have:

• Minimum 5 years of Java development experience, including Spring / Spring Boot
• Strong SQL and relational database skills
• Experience with REST APIs and microservices
• Experience in Agile (Scrum) teams

Nice-to-Have:

• Docker / Kubernetes; Kafka or other messaging
• Front-end knowledge (Angular or React)
• Previous Tech Lead experience
• Cloud experience (Azure, AWS or on-prem OpenShift)

Languages:

• Most of our clients operate in a bilingual environment: French and/or Dutch is required for the majority of missions, with a strong preference for bilingual FR/NL profiles
• Professional English is expected in most IT environments

Engagement Model:

Missions are typically medium to long term, full-time or part-time, on site or hybrid (usually 2–3 days on site). Depending on your preference, we work with you as a Keystone Solutions employee or as a freelance/subcontractor.

How This Talent Pool Works:

• Intake call with one of our recruiters to understand your expertise, preferred environments, languages and availability
• Keystone CV: we prepare with you a client-ready CV highlighting your most relevant experience
• Fast matching: when a client publishes a matching request, we contact you first and can submit your profile quickly – often before the market
• Transparency: we never submit your profile without your explicit consent for each mission
• Regular check-ins to keep your availability and preferences up to date

What We Offer:

• Priority access to missions matching your profile, with well-known Belgian organisations
• A dedicated recruiter who knows your profile and your career goals
• Feedback after client submissions and interviews
• Coaching, training opportunities and a community of IT professionals
• Competitive conditions aligned with your seniority and the market

Location: Belgium – mainly Brussels, also Flanders and Wallonia depending on the mission. Hybrid work is common.

Interested? Apply with your CV and mention your availability date, preferred working languages and employment preference (employee or freelance).