Senior Tech Lead Solution Architect

About the mandate

You strengthen the cross-functional architecture team of a large organisation in Brussels and provide technical leadership there. You work on reference architectures, technological developments and the follow-up of strategic projects, and you coach the development teams. The assignment runs from 23/11/2026 to 31/12/2027, partly remote. You have a broad role that combines technology with attention to the operational and business side. You support the business in specifying needs, work together with infrastructure teams and external partners, and contribute to compliance with rules on security and information management. In addition to your CV, you complete a short Java exercise as part of the selection.

Responsibilities

• Provide technical leadership to the cross-functional architecture team
• Guide development teams through coaching and skills development
• Define reference architectures and let them evolve
• Introduce SLIs, SLOs and SLAs, including the strategy and monitoring to achieve them
• Follow up strategic projects and support the business in specifying needs
• Develop and implement technological developments and a strategy for managing technical debt
• Follow up and apply regulations on security and information management
• Work together with the operational line, infrastructure teams and external partners, and contribute to needs analysis and product evaluation in procurement procedures and to internal training modules

Must-haves

• At least 15 years of experience in software development and the Java ecosystem
• At least 10 years of proven experience as a Team Lead, in addition to experience as a Solution Architect
• Technical knowledge of Java, TypeScript, Angular, DDD, CI/CD, Docker/Kubernetes, Spring Boot, RabbitMQ, OAuth2/OIDC, OpenAPI/AsyncAPI, OpenTelemetry, Maven/Gradle, TDD, Cypress, Hibernate and C4/ArchiMate modelling
• Recent, successful experience in setting up a migration architecture from a backend system to a modern stack (Spring) and in managing the full project lifecycle
• Bachelor's degree in an IT-oriented field
• At least a Scrum Master and/or ICT project management training
• Knowledge of Agile methodologies, individual and team coaching, and needs analysis
• Strong leadership, out-of-the-box thinking and interest in business and operational aspects as well as technology

Nice-to-haves

• Knowledge of the specifics of social security
• At least 1 year of successful experience at an institution within social security

What the employer offers

• Hybrid working model with partial remote working
• Assignment of about 14 months in Brussels