I’m Laurent Demouge, senior IT architect and transformation expert.
I help ambitious companies — from fast-growing scale-ups to established enterprises — design and transform their software architecture to support their growth, agility, and long-term impact.
Whether you’re building your platform from scratch or modernizing legacy systems, I provide the strategic and technical expertise to align your IT foundations with your business goals.
No 120-slide PowerPoint decks. No big-bang rewrites that never finish. Just architectural decisions that serve your business.
I’ve worked with: NS (Dutch Railways) · L’Oréal (digital supply chain) · Thales (critical systems) · Mazars (IT transformation)
From critical infrastructure to growing SMEs: I know what “pragmatic” means: deliver value today while building foundations for tomorrow.
How I can help you
Part-Time CTO
Strategic tech leadership without hiring full-time. Make the right architectural decisions, align tech and business, move fast without breaking everything.
For whom: SMEs (50-500 people), scale-ups (50-200 people), growing start-ups (10-50 people) who need tech leadership without a full-time CTO.
IT Architecture & Transformation
Modernize your legacy systems without rewriting everything. Domain-Driven Design, Event-Driven Architecture, Cloud-native, microservices.
Concrete examples:
- Break a monolith into clean business domains without a big-bang rewrite
- Migrate to the cloud incrementally and reversibly
- Architect so changes don’t cascade
- Design a platform that scales with your growth
Technical Due Diligence
Fundraising, M&A, investment: assess your tech risks, identify technical debt, validate scalability.
What you get:
- Clear and actionable assessment report
- Identification of technical risks and hidden debt
- Modernization cost estimates
- Prioritized recommendations
IT Audit & Roadmap
Identify your tech blockers, prioritize your investments, build a clear action plan aligned with your business objectives.
Result: A realistic technical roadmap that aligns your tech decisions with your business goals, not with the latest trends.
Coaching & Skills Development
DDD, Event Sourcing, CQRS, modern architecture: train your teams in practices that make a difference.
Format: Targeted workshops, practical support, and training to level up your teams on DDD, modern architectures, and technical decision-making practices.
Have a project in mind? Let's talk.
Let's talk →Why work with Exxan
Capital-efficient, not burn-rate-efficient
You don’t have infinite VC runway to “figure it out later.”
You need technology that works now and scales later — not the other way around.
I work with pragmatic European companies that want to deliver value today while building foundations for tomorrow.
On the ground when it matters
I’m based in the Netherlands and work across Belgium, Luxembourg, Western Germany, and Northern France.
Amsterdam, Brussels, Cologne, Lille — if you’re within 3 hours, I can be there for the moments that count: strategic workshops, critical architectural decisions, team alignment.
Face-to-face matters when building your company’s technology foundations.
Strategic partner, not a consultant who disappears
I don’t drop a report and disappear.
I work with your team: code reviews, pairing, ADR (Architecture Decision Records), workshops, mentoring.
The right architectural decisions come from understanding your context, constraints, and goals — not from applying trendy frameworks.
Who are my clients
Start-ups & scale-ups who want to build solid architectural foundations from day one and move fast without breaking everything.
SaaS and product teams needing external support to scale safely and efficiently.
Established SMEs (50-500 people) digitalizing their operations and needing tech leadership without hiring a full-time CTO.
Large enterprises facing legacy system modernization or architectural alignment across departments.
Technical leaders who want to challenge, validate, or refine their roadmap with an experienced architect.
What I deliver
A clear and realistic architectural vision adapted to your context and constraints.
Pragmatic execution aligned with your business objectives, not with the latest tech trends.
Concrete collaboration with your teams: code reviews, pairing, ADR, workshops, mentoring.
Long-term value through architectural decisions that give you flexibility, not rigidity.
Let’s talk
No sales pitch. Just a 30-minute conversation to understand your situation and see if we’re a fit.
Book a 30-minute call—let's see if we're a fit
Let's talk →Or email me directly at laurent@exxan.nl.