Get in touch
Let's connect.
Email is the fastest path — messages land directly with me. Usually a reply within one working day.
Direct contact
Direct line.
Email or DM on LinkedIn — whatever's faster. A 30-minute conversation is usually enough to check fit.
- mathieu@efficacy.be
- /in/mathieuvandevelde
- Address
- Soldatenhoek 16, 9080 Lochristi, Belgium
- Company
- Digital Efficacy BV
- VAT / Company number: BE 0738.773.576
Response time: typically within one working day.
Frequently asked
Common questions.
Quick answers to the things prospects ask most often before we hop on a call.
What kind of organizations do you work with?
Mid-to-large organizations across Belgium, the Netherlands, Luxembourg and the wider EU. I work with leadership teams that own a P&L line — typically COO, CMO, CFO, Transformation Director or founder/CEO — when they need to move from strategy into delivered, measured outcomes.Is this just marketing consulting?
No. My background is 15 years in digital marketing, but my focus today is broader business transformation — AI enablement, operating-model change, internal tool building (vibecoding), and data foundations. Marketing is one domain I bring depth in when it's relevant.What do you mean by 'vibecoding'?
Vibecoding is shipping small, focused internal tools fast — AI-assisted, often built in days instead of quarters. Think RFP summarizers, copy-QA bots, lead-scoring agents, reporting copilots. Built where teams already work and pragmatic about the stack you actually run.How does an engagement typically start?
A 30-minute call to understand the problem, the stakeholders and the constraints. From there, either a short discovery (one to two weeks, fixed price) or directly into delivery if the brief is already sharp. No 8-week pitches.Do you work in English or Dutch?
Both. Workshops, documentation and delivery can be in either language, depending on what your team prefers.Where are you based?
I'm based in Lochristi (East Flanders, Belgium) — Soldatenhoek 16, 9080 Lochristi. I work on-site with clients across the Benelux and remote elsewhere in the EU.