Lead Solution Architect — Enterprise Transformation

ITProposal; Brussel Hoofdstad; On-site; EUR 166,000 - 277,000; Full time

Job summary

ITProposal in Brussels seeks an experienced Technical Lead to drive end-to-end architecture for complex IT initiatives. You will shape solutions balancing performance, security and resilience across enterprise systems.

The role blends hands-on engineering with architectural oversight across cloud and on‑premises platforms, including IBM Mainframe, Java/.NET, Azure, and API integration. You will translate business needs into scalable architectures and mentor delivery teams.

Qualifications

• 15+ years of IT experience with enterprise architectures.
• Proven Lead Solution Architect on large-scale transformation projects.
• Experience delivering transactional systems in complex environments.
• Strong knowledge of IBM Mainframe, Azure, APIs, and data technologies.

Responsibilities

• Lead end-to-end architecture design and delivery for complex initiatives.
• Collaborate with Requirement Owners, Domain Architects, IT engineers, and dev teams.
• Ensure architectures meet enterprise standards and roadmaps.
• Develop reusable architecture patterns and building blocks.
• Guide target architectures for large-scale transformations.
• Identify challenges and propose scalable solutions.

Skills

15+ years IT experience

Lead Solution Architect on large-scale

Enterprise systems design

IBM Mainframe

Java

.NET (Windows)

Azure Cloud

APIs

Data technologies

Architectural analysis

Requirements translation

Cross-system collaboration

Tools

IBM Mainframe

Java

.NET

Azure

Apache Kafka

Linux

Job description

ITProposal in Brussels seeks an experienced Technical Lead to drive end-to-end architecture for complex IT initiatives. You will shape solutions balancing performance, security and resilience across enterprise systems.

The role blends hands-on engineering with architectural oversight across cloud and on‑premises platforms, including IBM Mainframe, Java/.NET, Azure, and API integration. You will translate business needs into scalable architectures and mentor delivery teams.