Tech Lead Java Solution Architect

In4Matic; Brussel Hoofdstad; Hybrid; EUR 120,000 - 180,000; Full time

Job summary

In4Matic seeks a senior technology leader to strengthen its transversal architecture function. You combine deep Java expertise with strong leadership and a clear grasp of operational and business needs.

You will define reference architectures, establish SLI/SLO/SLA targets, and guide modernization efforts, ensuring security and compliance while collaborating with business and infrastructure teams.

Qualifications

• At least 15 years of Java development experience.
• 10+ years in a Team Lead capacity.
• Proven track record as a Solution Architect across complex environments.
• Recent experience delivering a backend migration to a modern Spring-based stack.
• Bachelor’s degree with an IT focus.
• Training in Scrum Master and/or ICT project management is required.
• Strong analytical thinking, coaching ability, and an agile mindset.
• Ability to collaborate with technical and business stakeholders.

Responsibilities

• Provide technical leadership within the transversal architecture team.
• Coach and support development teams, helping them grow in competence and delivery maturity.
• Define reference architectures and ensure their ongoing evolution.
• Establish and monitor SLI, SLO, and SLA targets, including strategies to achieve them.
• Follow up on strategic initiatives and support their successful delivery.
• Work with the business to translate needs into workable specifications.
• Define and implement technology evolution initiatives and manage technical debt.
• Support the implementation of security and information management regulations.
• Collaborate with infrastructure teams and external partners as needed.
• Gather requirements and evaluate products within procurement processes.
• Contribute internal training modules and knowledge-sharing material.

Skills

Java

Leadership

Architecture

DevOps

Security

CI/CD

OpenAPI/AsyncAPI

Observability

Education

Bachelor's degree in IT

Tools

Spring Boot

Docker

Kubernetes

Maven/Gradle

Hibernate

OpenTelemetry

ArchiMate

Job description

Function

Our client is looking for a senior technology leader to strengthen its transversal architecture function. This opportunity is suited to an experienced professional who combines deep Java expertise with strong leadership skills and a clear understanding of both operational and business needs.

Responsibilities

• Provide technical leadership within the transversal architecture team.
• Coach and support development teams, helping them grow in competence and delivery maturity.
• Define reference architectures and ensure their ongoing evolution.
• Establish and monitor SLI, SLO, and SLA targets, including the strategies needed to achieve them.
• Follow up on strategic initiatives and support their successful delivery.
• Work with the business to clarify and translate needs into workable specifications.
• Define and implement technology evolution initiatives, including the approach to technical debt management.
• Support the implementation of security and information management regulations and align solutions with operational requirements.
• Collaborate with infrastructure teams and external partners as needed.
• Gather requirements and evaluate products within procurement processes.
• Contribute internal training modules and knowledge-sharing material.

Technical Skills

The ideal profile combines broad architecture experience with hands‑on technical depth across modern Java ecosystems and related tooling.

• Java, Spring Boot, TypeScript, Angular
• Domain‑Driven Design, CI/CD, Docker, Kubernetes
• RabbitMQ, OAuth2/OIDC, OpenAPI/AsyncAPI
• OpenTelemetry, Maven, Gradle, Hibernate
• TDD, Cypress, C4 and Archimate modelling

Experience with backend modernization and migration to a modern Spring-based stack is particularly important. A strong understanding of security, observability, and scalable architecture design is expected.

Profile

• At least 15 years of experience in Java development and the Java ecosystem.
• Proven leadership experience, including at least 10 years in a Team Lead capacity.
• Solid track record as a Solution Architect, with experience guiding architecture decisions across complex environments.
• Recent experience delivering a backend migration to a modern technology stack and managing the full project lifecycle.
• A bachelor’s degree with an IT focus.
• Training in Scrum Master and/or ICT project management is required.
• Strong analytical thinking, coaching ability, and an agile mindset.
• Ability to work across technical and business stakeholders with confidence and clarity.

Knowledge of social security environments, and in particular the responsibilities of the organization, is a strong asset. Experience of at least one year within a social security-related institution is highly desirable.

Practical Information

Language requirements:

• English: active knowledge
• French: active knowledge

Contactperson & Reference

• Reference #: INW28626
• Marilyn Weytens
• [e-mail]