Domain Architect Service

Mission: We are looking for a high-impact IT Domain Architect to join an IT Architecture team within a large and complex organization. The role focuses on the Corporate, AI & Market business domain, encompassing: Corporate capabilities and supporting functions, Artificial Intelligence and AI governance, Enterprise and integration architecture, Interaction with energy market-related services. As a Domain Architect, your mission is to ensure that the domain's IT landscape is coherent, secure, operable and future-proof, while aligning architecture with business strategy, regulatory requirements and operational needs.

We are looking for a pragmatic bridge-builder who can operate at the intersection of strategy and execution, translating high-level business capabilities into scalable and actionable technical blueprints.

Key Responsibilities: Architectural Translation & Design: Form a strategic tandem with Business Architecture to translate organizational capabilities into actionable IT roadmaps. Convert complex business processes into detailed IT Blueprints that guide development and implementation teams.

Standards & Governance: Define and enforce domain-specific principles while ensuring alignment with Group and Local principles, standards and reference architectures. Present, justify and defend architectural designs before the Architectural Review Board (ARB). Formalize architectural logic through Architectural Decision Records (ADRs) to ensure long-term maintainability. Guard against architectural drift and unmanaged technical debt. Monitor SLA/OLA performance and report domain-level risks.

Portfolio Management: Maintain a single source of truth for the IT application and platform portfolio within the Enterprise Architecture Repository. Conduct regular portfolio assessments using methodologies such as Gartner TIME and 6R, factoring in operational criticality and working closely with Business and IT stakeholders. Identify opportunities for application/platform reuse to reduce technical debt and operational costs. Work with Solution Architects to ensure solutions are viable throughout their build, run, evolve and retire lifecycle and remain aligned with domain strategy and quality standards.

Strategic Advisory: Conduct trade-off analyses covering cost, risk, complexity and time-to-value to facilitate executive decision-making. Perform peer reviews of Solution Architecture deliverables to ensure domain consistency. Develop and maintain domain roadmaps anticipating regulatory, technological and energy-system evolution. Advise senior stakeholders on the long-term architectural implications of strategic decisions. Data, Integration & Information Architecture: Work with Data Architects and Solution Architects to govern operational data models, integration patterns and data ownership.

Collaborate with Enterprise and Platform Architects to ensure interoperability between enterprise systems, operational systems and analytics platforms. Coordinate with Data Architecture teams to ensure semantic consistency and data quality. Security, Resilience & Compliance: Collaborate with Security and Compliance teams to ensure that security, availability and resilience requirements are embedded into domain architectures. Ensure compliance with applicable regulatory, safety and cybersecurity obligations.

Define architectural measures supporting Business Continuity and Disaster Recovery.

Requirements: We are looking for a delivery-focused professional who thrives in a dynamic environment where technical rigor, operational reliability and business agility intersect.

Core Competencies: Trusted Advisor: Exceptional communication skills. Ability to interact effectively with C-suite stakeholders, operational leaders, Project and Product leadership, Product Owners, IT Application Managers and technical engineering teams. Ability to clearly articulate complex architectural trade-offs.

Strategic Mindset: Ability to design architectures that are scalable, compliant, resilient and operable across their full lifecycle. Ability to balance innovation with long-term sustainability.

Collaborative Leadership: Strong ability to collaborate with Business, Domain, Solution, Security, Platform, Enterprise, Information and Data Architects.

Governance & Decision Ownership: Comfortable operating within architectural governance structures. Able to defend architectural positions and take accountability for domain-level decisions. Ability to ensure adherence to standards without compromising delivery.

Technical & Professional Experience: Architecture Frameworks & Modelling: Deep knowledge of TOGAF and ArchiMate, with the ability to apply them pragmatically in delivery contexts. Modern IT Analysis & Design: Hands-on experience with Domain-Driven Design (DDD), Event Storming and Agile Architecture methodologies. Strong background in Corporate business capabilities, processes and supporting systems, particularly across Finance, HR, Procurement and Corporate Services.

Experience or knowledge of the Energy & Utilities sector, particularly electricity market facilitation and system services such as: Outage planning, Scheduling, Balancing services, Voltage services. Familiarity with architecture evaluation methodologies such as ATAM (Architecture Tradeoff Analysis Method) and Gartner TIME.

Industry & Domain Expertise: Background in the Corporate domain and SAP products. Knowledge and practical experience with: AI target architectures, AI reference architectures, Architectural patterns, AI Governance, EU AI Act, Integration Architecture, including MCP. Knowledge of Energy Market facilitation services is considered a plus. Awareness of IT/OT integration, operational constraints and safety-critical systems found in complex industrial or critical-infrastructure environments.

Understanding of architectural implications related to: Security, Availability, Regulatory compliance, Operational risk, Critical infrastructure. Awareness of Corporate business capabilities, processes and supporting systems across Finance, HR, Procurement and Corporate Services.

Language Requirements: Native-level proficiency in Dutch, French or German. Professional proficiency in English. Knowledge of one or more of the other languages is considered an asset.

Additional Information: Location: Brussels.

Hybrid working: 2 days per week on-site.

Work regime: Full-time.