IT Domain Architect

To support this evolution, we are looking for an IT Domain Architect who will shape the end-to-end architecture of this critical IT domain and guide its evolution in line with group strategy, technology standards and business ambitions. You will drive the technical architecture of our our digital assistant towards a seamless integration that support customer-facing operations, internal teams, and cross-business processes.

You will design an architecture that allows keeping the current assistant scalable and robust, and you will ensure that day-to-day deliveries have a good solution, while at the same time design a forward-looking view on its architecture. You have a very good view on all AI evolutions and translate emerging opportunities into concrete innovation in the domain that strengthens our digital interaction capabilities.

As Domain Architect, you ensure architectural coherence, drive technology choices, and translate strategic objectives into implementable roadmaps. You act as the trusted advisor for your domain, working closely with enterprise architects, engineering squads, product owners and business stakeholders., Own & Evolve the Architectural Vision

• Create, maintain, and communicate the architecture of the digital and agentic assistant domain (functional, technical, data, integration and non-functional).
• Ensure the assistant remains scalable, robust and future-proof while enabling new agentic capabilities.
• You will design an architecture that

• Is modular, combining different solutions that can evolve in a different pace.

• Balances vendors and considers vendor lock-in,

• Supports an omni-channel customer experience

• Allows reusable blocks between agentic customer support and agentic assist of employees.

• Balances low code versus pro-code solutions, citizen development versus full stack engineering solutions

• Is designed for cost visibility and cost awareness.

• Ensures a seamless chat, voice interface across all different technologies and intents.

• Collaborate closely with enterprise architects , other domain architects and engineering teams & experts to ensure alignment of the proposed architecture with all stakeholders.
• Ensure architecture aligns with Proximus' enterprise architecture principles, technology standards and security requirements.

Guide Solution Design & Delivery

• Steer squads and solution architects in designing solutions aligned with the domain vision.
• Coach and mentor the engineers of the domain towards a target development and application landscape.
• Guard architectural coherence, integration patterns and technology choices through your role and setup design authorities and decision documentation when appropriate.
• Support solution architects, ensuring day-to-day delivery fits the long-term architectural vision and train & teach them on the job to get familiar with recent technologies.

Technology Leadership

• Monitor day-to-day technology trends relevant on the domain like AI trends, LLM evolution, agentic workflows, and interaction architecture.
• Identify opportunities to leverage innovation to strengthen Proximus' digital capabilities.
• Keep an active view on all evolutions in how AI and agentic AI is changing the software development lifecycle and apply them as much as possible when relevant. Guiding the developers in best practices, adopting AI-assisted development practices, striving for test-driven development, adopting AI-specific testing techniques like evaluations.
• Be able to quickly create a POC to demonstrate the possibilities of new technology within the domain.

Risk & Compliance Management

• Ensure compliance with regulatory requirements, and Proximus security policies.
• Identify new risks linked to recent AI evolutions and collaborate with other teams to implement mitigations for the domain.

Your Profile

The role requires strong IT architecture background with development experience.

We are looking for a hands-on, forward-thinking architect who blends deep technical mastery of agentic AI with pragmatic delivery sense, shaping a scalable assistant ecosystem while collaborating naturally across business, engineering and AI teams.

• Strong experience as a Domain Architect, Solution Architect or similar senior technical architecture role.
• Deep knowledge of modern IT architecture: cloud-native design, APIs, integration, data flows, automation, security-by-design, and scalable platforms.
• Understanding of agentic AI technologies (LangGraph, Azure AI, orchestration engines, intent detection, automation).
• Curious, forward-looking and comfortable shaping a new capability in a fast-evolving field.
• Experience working in complex enterprise environments with multi-squad or multi-vendor delivery models.
• Ability to translate strategy into coherent architecture and actionable roadmaps.
• A proactive, structured and collaborative mindset.
• Someone who enjoys building and validating patterns in code and frameworks (e.g., Azure OpenAI, LangGraph) before standardizing them for squads.
• Comfortable bridging citizen AI & low-code and pro-code agent frameworks with pragmatic judgment on when to use which-and how to publish agents to Copilot or other channel
• We're looking for a maker-architect who prefers crafting and validating architecture & patterns over people management, and who leads through technical authority.
• Excellent communication and influencing skills-you can balance long-term vision with operational realities.
• You are fluent in English. French and/or Dutch is considered as a plus.

This is a role with high visibility and direct impact-your work influences how millions of customers interact with Proximus and how internal teams deliver next-generation digital capabilities. You will be part of the engineering team that is responsible for the engineering and operations of the platforms of our digital assistant.