Enterprise Architect

Enterprise Architect - 3 Months - Brussels Belgium

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Intro

RELYzIT Talent is seeking an elite Enterprise Architect (ICT-Architect Expert) for a high-impact freelance assignment with our client in Brussels. This is a unique opportunity to architect the future of digital public services, shaping a federative data ecosystem that will transform how permitting and advisory processes operate across multiple domains. Join a mission-driven team where your expertise will directly influence the digital landscape and empower a new era of collaboration.

Why This Role Matters

Our client is building OmgevingOS, a modular, federative platform designed to revolutionize the permitting and advisory chain. This role is pivotal in translating vision into actionable architecture, ensuring coherence, interoperability, and future-readiness across a complex ecosystem involving 15 policy entities. Your work will drive efficiency, predictability, and legal robustness, shifting the paradigm from reactive to proactive digital governance. The stakes are high: your architecture will be the backbone of a solution-focused, data-driven environment that sets new standards for public sector innovation.

What You’ll Be Doing

• Designing and maintaining the reference architecture for OmgevingOS, ensuring alignment between existing systems and future building blocks.
• Defining and governing architecture principles, standards, and best practices across a federative data hub and modular platform clusters.
• Driving coherence, reuse, and interoperability within a diverse ecosystem of autonomous organizations.
• Translating strategic vision into actionable program architecture, including project definitions, sourcing, procurement, and phased roadmaps.
• Developing and documenting architecture decisions in complex, multi-entity governance contexts.
• Facilitating business-IT alignment at the strategic level, ensuring that architecture supports both operational and policy objectives.
• Collaborating with business analysts, solution architects, service designers, and strategists to deliver a robust, future-proof platform.
• Establishing architecture governance, knowledge-sharing forums, and steering committee mandates to ensure sustainable program delivery.
• Championing modular building blocks and capabilities thinking to enable scalable, adaptable solutions.
• Ensuring the platform supports data-driven pre-phase processes, AI advisory support, permitting registers, and structured data exchange.

What We’re Looking For

• Proven expertise as an Enterprise Architect or specialist architect in domains such as networking, security, server infrastructure, application architecture, ERP, ECM platforms, or Data warehouse/BI.
• Extensive experience making architecture decisions in public sector or complex governance environments.
• Deep knowledge of digital platform architectures, especially non-monolithic and federative models.
• Strong background in ecosystem integration across autonomous organizations.
• Mastery of modeling techniques and tools: Archimate, TOGAF, UML, Sparx EA.
• Demonstrated ability to align business and IT at a strategic level, driving impactful outcomes.
• Expertise in architectural principles, reference architectures, and modular building blocks/capabilities thinking.
• Solid understanding of business processes and project management facets (costs, timing, coordination, planning, estimates).
• Experience with architecture governance, knowledge-sharing, and multi-stakeholder collaboration.
• Ownership mindset, proactive problem-solving, and a passion for building future-ready solutions.

Technical Skills & Requirements

• Expert-level experience as an Enterprise Architect or specialist architect in at least one domain (infrastructure, application, security, data, process).
• Demonstrable experience with architecture in public/complex governance contexts.
• Proven track record with digital, non-monolithic platform architectures.
• Experience integrating ecosystems across autonomous organizations (Senior level).
• Advanced proficiency in modeling techniques: Archimate, TOGAF, UML, Sparx EA.
• Strategic business-IT alignment experience.
• Expertise in architectural principles, reference architectures, and modular building blocks.
• Comprehensive understanding of business processes and project management (costs, timing, coordination, planning, estimates).
• Knowledge of all architecture domains, with specialist expertise in at least one.

Language Proficiency

• Fluency in Dutch at European CEFR level C2 is mandatory.

Other Requirements

• Experience working in multi-entity, federative, or public sector environments is highly valued.
• Familiarity with Agile, Scrum, or similar project frameworks is a plus.
• Strong communication and stakeholder management skills.
• Ability to work collaboratively in a multidisciplinary team.

About the Role

• This is a freelance position for a 3-month project based in Brussels, Belgium.
• RELYzIT Talent is committed to placing elite tech talent in roles that drive real impact and innovation.
• Join a builder-first community where your expertise is recognized, and your VECTOR7™ credential is your passport to future opportunities.

Ready to architect the future? Upload your CV now and join the RELYzIT Talent community of exceptional builders.