Lead Architect

Keystone Solutions is seeking a Lead Architect Consultant (EA / ARIS) for a consultancy mission at our client. As a Keystone Solutions consultant, you will help the Enterprise Architecture (EA) team plan, manage, and supervise the implementation of an Enterprise Architecture practice using the ARIS solution. You will operate under Keystone Solutions' consultancy model, engaging closely with client stakeholders to deliver high-impact outcomes.

As a Keystone Solutions consultant, you will work on-site and in hybrid setups at client locations, collaborating with both technical and non-technical stakeholders. You will represent Keystone Solutions while executing the client's EA objectives, ensuring best practices, governance, and delivery excellence with the ARIS solution.

• →Co-define and provide advice for: Defining Enterprise Architect standards, frameworks and principles.
• →Support an agile approach to deliver MVPs for the EA solution based on ARIS.
• →Use best practices to define methods and tools for EA stream leads and stakeholders.
• →Provide knowledge and best practices for governance process in the EA solution.
• →Identify the risks that could affect EA projects.
• →Establish communication/relationships between both IT staff and non-technical staff.
• →Reviewing (changes).
• →Act as reference resource for the EA team for the ARIS Solution.
• →Design the overall picture for the EA solution (e.g. metamodel); analyse existing content and best (re)use in ARIS.
• →Advise on architectural standards, building blocks, artefacts and EA deliverables.
• →Support the EA project team during development, migration and maintenance; review ARIS technical specifications.
• →Quality review of the EA solution; establish communication between IT and non-technical stakeholders.

• Minimum 15 years experience in Enterprise Architecture and/or BPM.
• Demonstrable experience in at least 3 projects developing/implementing EA solutions on the ARIS platform for EA teams.
• Working knowledge of ArchiMate and BPMN modelling and of ARIS for EA.
• Minimum 8 years experience defining EA frameworks, ARIS governance and ARIS metamodels.
• Minimum 8 years experience in the public sector.
• You communicate fluently in Dutch or French and English. Dutch or French at C level, others at least B1.
• Legal authorization to work in Belgium.

For each evaluation criterion, your CV should clearly demonstrate relevant experience or knowledge through one or more examples/projects. The more relevant experience or knowledge you can provide as evidence, the better your CV will be evaluated.

• Breadth & seniority of EA experience (20+ years, multiple industries including public sector).
• Combined Enterprise + Solution Architecture + BPM capability across the full EA lifecycle.
• Proven knowledge of EA frameworks and the ARIS meta-model.
• Certifications (ArchiMate, BPMN, ARIS, Prometa) — considered an asset.
• Stakeholder communication (technical & non-technical), can-do mentality, win-win approach.

As a Keystone Solutions consultant, you will have the opportunity to tackle diverse challenges across multiple client environments, applying EA and ARIS expertise to different contexts, sectors, and stakeholder landscapes.

Operating in a consultancy environment accelerates your learning curve through exposure to varied EA problems, tooling landscapes, and governance models. Keystone Solutions supports professional excellence centered on best practices in ARIS, EA frameworks, and stakeholder communication.

Keystone Solutions fosters career growth through impactful client engagements, enabling you to expand your influence from reference architecture and metamodel design to governance, quality reviews, and advisory across the full EA lifecycle.

Being a K‑Stone means bringing a can-do mentality, clear communication, and a win-win approach to every client project. These values guide our consulting engagements and ensure sustained value delivery in complex stakeholder ecosystems.

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.