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Pauwels Consulting
Senior Solution Architect – API & Integration

Senior Solution Architect – API & Integration

Hybrid

Brussels, Belgium

Senior

Freelance

03-02-2026

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Skills

CI/CD DevOps Monitoring Architecture Organization Azure CI/CD Pipelines Microservices

Job Specifications

Our client, a large public-sector organization operating mission-critical transport and planning systems, is seeking a Senior Solution Architect to design and safeguard complex integration-heavy solutions. The role focuses on end-to-end architecture, API contract design, and hands-on technical oversight in a multi-channel, cloud-based integration landscape.

This is an execution-oriented architecture role that combines design authority with active involvement in troubleshooting, integration validation, and delivery assurance.

Responsibilities:

Translate business requirements into end-to-end technical architectures aligned with enterprise standards.
Design and govern API contracts using OpenAPI and established integration patterns.
Ensure scalability, security, performance, and reliability across solution designs.
Provide hands-on technical support during implementation, including troubleshooting complex integration issues.
Review and validate supplier solutions to ensure compliance with architectural and security guidelines.
Support onboarding of new business changes within existing integration landscapes.
Contribute to audits by assessing solution conformity with internal standards.

What are we looking for?

You have a minimum of 7+ years of experience in a solution or technical architecture role.
You bring at least 5+ years of experience designing API contracts and integration interfaces.
You possess strong knowledge of API-first architectures, microservices, and cloud-native design principles.
You have hands-on experience with Azure and modern integration patterns.
You bring experience with middleware or integration platforms such as Axway or equivalent tools.
You are comfortable troubleshooting performance, security, and reliability issues in complex integration landscapes.
You are fluent in English and French or Dutch.

Nice to Haves

Experience with containerization and orchestration technologies.
Exposure to DevOps and CI/CD pipelines.
Experience with monitoring and observability tooling.

What do we offer?

Start date: 16/03/2026
Duration: until 29/02/2028
Work regime: Full-time
Location: Brussels
Working model: Hybrid (minimum 2 days onsite)
Contract: open to both permanent employees and freelancers

About the Company

Pauwels Consulting is a Belgian consultancy firm with more than 1500 experts in engineering, life sciences and IT. We staff, manage and execute projects for leading organizations in Belgium, France, The Netherlands and beyond. Experts in Engineering, Life Sciences and IT Our Engineering team helps organizations in the (petro)chemical, civil engineering, industrial production, energy and transport businesses with the design, supervision, support and execution of long-term projects. We are particularly active in the fields o... Know more