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ICT-Architect (Expert) - Platform Architect – Ecosysteem & Integratie

Location
Brussels, Belgium
Work mode
On-site
Contract
Contract · Senior
Closed
20 Mar 2026

This mission closed on 20 Mar 2026.

It stays online for reference, but it no longer takes applications.

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About the mission

We are looking for a Platform Architect with expertise in digital platform architectures and experience in integrating autonomous organizations. The role involves developing a modular collaboration platform and a central transformation team to enhance governance and collaboration.

Read the full description
We are looking for a Platform Architect – Ecosystem & Integration with experience in digital platform architectures to make architectural choices with integration between autonomous organizations.

Overview

The assignment consists of two parts. On one hand, concretizing OmgevingOS: an underlying, modular collaboration platform that supports the advice and subsidy chain, with clear scope, concept definition, reference architecture, process model, modular building blocks, and a phased roadmap with budget scenarios. The focus in the first phase is explicitly on advising (“shift left”).

Key Responsibilities

Deliverables (by June):
Scope & definition of OmgevingOS: clear delimitation, concept definition, and first modular building blocks (“what it is and what it is not and why”).
Reference architecture: first architectural sketch with modular structure and integration and technology principles.
Process model & building blocks: mapping of advisory functions and definition/prioritization of generic building blocks.
Roadmap & budget: phased roadmap with two scenarios, quantified and substantiated, with one preferred and one alternative scenario.

On the other hand, developing a central transformation team: shaping roles, mandates, governance, and collaboration agreements for a lean but effective team that drives the programs, maintains coherence, and reports to the Management Committee.

Deliverables:
Structuring the central transformation team: documenting roles, responsibilities, mandates, and alignment with entities and policies.
Approved charter: clear agreements on roles, decision-making authorities, and collaboration.
Conditions mapped: governance and decision model, architectural principles, and agreements regarding data, integration, security, and privacy, aligned with OIS.

Skills & Experience

Proven experience as a specialist architect in a specific domain (networking, security, server infrastructure, application architecture, ERP, ECM platforms, Data warehouse, and BI, ...) or Enterprise Architect.

Must have: 8 Years - Expert
Proven experience with architectural choices in public or complex governance contexts.
Must have: 8 Years - Expert
Proven experience with digital platform architectures (not monolithic).
Must have: 8 Years - Expert
Proven experience with ecosystems and integration between autonomous organizations.
Must have: 5 Years - Senior
Proven knowledge and experience of modeling techniques (Archimate, Togaf, UML, Sparx EA).
Must have: Yes
Proven experience in aligning business-IT at a strategic level.
Should have: 8 Years - Expert
Proven experience with architectural principles and reference architectures.
Should have: 8 Years - Expert
Proven experience with modular building blocks/capabilities thinking.
Should have: 8 Years - Expert
Proven knowledge and experience of business processes in general.
Should have: Yes
Proven knowledge and experience of various Project Management facets (costs, timing, coordination, planning, estimates).
Should have: Yes
Proven knowledge of all domains plus proven specialist architect in at least 1 specialized domain (infrastructure, application, security, data, process…).
Should have: Yes

Languages

Language requirement: Dutch at European CEFR level C2.

Additional Info

Working hours: Day
Estimated number of hours per person: 128
Employment regime (percentage): 40
Remote work possible? Yes

The number of ordered days is decisive, start and end dates are indicative and can be adjusted if necessary.
Performances are not entered by the supplier but imported by the client after registration in JIRA. The supplier receives the pro forma invoice around the 10th of the month.
Performances must be submitted for approval in JIRA no later than the last day of the month to be considered. Late submitted performance statements will be rejected.
The supplier is expected to monitor the balance themselves and report one month before the expected depletion of the number of days. Performances in over-run are not allowed and are at the supplier's risk.
External staff must work at least 1 day/week from the headquarters.
External staff can perform a maximum of 220 days per calendar year; performances in over-run are not allowed.

What you'll do

  • Concretizing OmgevingOS: an underlying, modular collaboration platform that supports the advice and subsidy chain.
  • Deliverables include clear delimitation, concept definition, and first modular building blocks.
  • Developing a central transformation team: shaping roles, mandates, governance, and collaboration agreements.
  • Documenting roles, responsibilities, mandates, and alignment with entities and policies.
  • Creating an approved charter with clear agreements on roles, decision-making authorities, and collaboration.

What we're looking for

  • Proven experience as a specialist architect in a specific domain (networking, security, server infrastructure, application architecture, ERP, ECM platforms, Data warehouse, and BI, ...) or Enterprise Architect.
  • Proven experience with architectural choices in public or complex governance contexts.
  • Proven experience with digital platform architectures (not monolithic).
  • Proven experience with ecosystems and integration between autonomous organizations.
  • Proven knowledge and experience of modeling techniques (Archimate, Togaf, UML, Sparx EA).
  • Proven experience in aligning business-IT at a strategic level.
  • Proven experience with architectural principles and reference architectures.
  • Proven experience with modular building blocks/capabilities thinking.
  • Proven knowledge and experience of business processes in general.
  • Proven knowledge and experience of various Project Management facets (costs, timing, coordination, planning, estimates).
  • Proven knowledge of all domains plus proven specialist architect in at least 1 specialized domain (infrastructure, application, security, data, process…).

Skills

  • Architectural choices in public governance contexts
  • Digital platform architectures
  • Ecosystems and integration
  • Modeling techniques (Archimate, Togaf, UML, Sparx EA)
  • Business-IT alignment at a strategic level
  • Architectural principles and reference architectures
  • Modular building blocks/capabilities thinking
  • Business processes knowledge
  • Project Management facets knowledge
  • Specialist architect in at least 1 domain