Senior Solution Architect - Public Sector

Context

Our client, a public-sector organisation in Belgium, is strengthening its digital capabilities as part of a multi-year transformation programme. The objective is to modernise its IT systems and build a secure, sustainable and integrated digital environment.

The client is looking for a hands-on Solution Architect / Lead Developer who can combine architectural ownership, technical leadership and software delivery.

Missions

• Define and own the solution architecture across applications, integrations, data and security.
• Lead technical delivery from design and backlog refinement through development, deployment and production handover.
• Make technical decisions, manage risks and unblock the development team.
• Review code and designs, coach medior developers and maintain high engineering standards.
• Establish best practices for Git, CI/CD, automated testing, environments and releases.
• Work closely with business, product, infrastructure and security stakeholders.
• Maintain architecture documentation, including diagrams, solution architecture documents (SADs) and architecture decision records (ADRs).
• Anticipate and mitigate technical risks related to security, performance, maintainability and production operations.

Tools & Environment

• Azure or equivalent public cloud, including hybrid environments
• Java and Python programming languages
• DevOps foundations: CI/CD, Git, automated testing, release management
• Security by design principles: identity and access management, secrets, least privilege, encryption, data protection
• Architecture documentation tools and practices

Working Conditions

• Location: Brussels, Belgium — minimum 3 days on-site per week
• Experience: 8+ years in software engineering, including 3+ years in technical leadership
• Languages: English required; French and/or Dutch are a plus

Additional Information

• This is not an architecture-only or advisory role. The client expects someone who remains directly involved in technical delivery and takes responsibility for what reaches production.
• Nice to have: Azure certifications (AZ-204, AZ-305), Docker, AKS or Kubernetes, Infrastructure as Code (Bicep or OpenTofu), experience in Belgian public-sector or regulated environments.
• Candidates must be able to demonstrate concrete examples of leading a solution through the full delivery lifecycle, combining architecture with hands-on development and code reviews, coaching a small team while resolving technical blockers, managing significant production incidents or rollout issues, and providing two verifiable professional references for comparable assignments.

Interested? Please share your CV, your availability and a short overview of a project where you personally owned both the architecture and technical delivery.

1. 8+ years of software engineering experience, including at least 3 years leading technical delivery
2. Proven experience delivering a solution from initial design to production, including operational handover
3. Strong Azure or equivalent public cloud experience, including hybrid environments
4. Confirmed Java or Python expertise in a professional environment, with the ability to review and guide work in the other language
5. Solid DevOps foundations: CI/CD, Git, automated testing and release management
6. Security by design: identity and access management, secrets, least privilege, encryption and data protection
7. Hands-on technical leadership: architecture, code reviews, technical decisions and developer coaching
8. Availability to work on-site in Brussels at least 3 days per week