For founders about to build. I turn your idea into a shippable MVP — architected to scale, not rebuilt in a year.
Pick the engagement that matches where you are. Most clients start with one and grow into another.
I lead small teams — or work solo — to take your idea from Figma to production. Web apps, SaaS platforms, internal tools. Built on a stack that won't paint you into a corner six months in.
1–2 days a week as the senior in the room — architecture, reviews, hiring. The senior technical voice your team doesn't have yet.
Two-week deep-read of your codebase, infra, and team practices.
Modern web stacks for engineering teams. In French & English.
Same shape whether it's a build, an audit, or a fractional-CTO retainer — fixed scope up front, visible progress, and everything yours at the end.
A 30-minute call to understand where you are and where you're stuck. No pitch — if I'm not the right fit, I'll point you to someone who is.
Within a few days you get a written scope, timeline, and price. You know exactly what you're buying before any work starts.
We work in weekly increments. You see real progress every week and own every commit, decision, and document as it lands.
Repos, infrastructure, and docs are yours from day one. Engagements pause or end at agreed checkpoints — no lock-in, no dependency on me.
Real products in production — SaaS, AI EdTech, marketplaces and mobile apps on Flutter and React Native, plus local-services and B2B sites.
We turned France's 2026 e-invoicing mandate into a 5-minute onboarding.
A compliance-grade Factur-X platform that gets freelancers and small firms issuing legally valid e-invoices before their coffee goes cold.
An AI tutor that explains the bac curriculum out loud — and draws while it talks.
Voice-first tutor for Tunisian baccalauréat maths and physics: teacher-verified recorded lessons, live AI explanations on demand, Arabic-first UI with FR/EN switching. Web platform plus Flutter app in production.
Turns a child's real school lesson into a narrated story, a quiz and a parent report.
Story-based AI learning for 6–12 year-olds in French, Arabic and English, told by an animated narrator. Next.js platform plus Flutter app in production, children's data kept in-region.
A six-destination travel guide app, admin back-office and landing site, shipped as one product.
Cultural and ecological guide to northern Tunisia with offline packs, audio guides and bookings. Flutter app in production, Next.js dashboard and site, one monorepo.
A brand-to-client marketplace app, live on Google Play.
Mobile-first marketplace where brands reach their clients directly. React Native app in production on Google Play, App Store submission in progress, MERN back-end.
Shopify for Tunisian tutors: publish a live class, share one link, fill the seats.
Two-sided marketplace where verified tutors run live video classes and students book seats, with all contact kept in-app. Next.js platform on a Tunisia-hosted VPS.
One operations cockpit that retired six spreadsheets and three logins.
Custom ERP — inventory, production scheduling, procurement, and role-based dashboards for a mid-size industrial group. Client confidential under NDA.
A two-minute quote funnel for a Paris clearance business spanning 8 departments.
Fast, SEO-built site plus paid-acquisition funnel that converts local searches into booked interventions.
A white-label LMS that onboards a new cohort in minutes, not weeks.
Multi-tenant learning platform with SCORM content, progress tracking, and auto-issued certificates for an accredited training provider. Client confidential under NDA.
A credibility-first corporate presence for an ANGED-certified environmental firm.
Multi-page site that positions a Tunisian B2B services company for institutional and municipal clients.
A booking site engineered around 5-star social proof.
End-of-tenancy cleaning service whose homepage converts on trust before it sells on price.
I'm Walid Ghouili — a fractional CTO and technical-audit consultant in Tunis, providing nearshore senior engineering to early-stage European and Tunisian startups in French, English, and Arabic. I founded InnoviaBurst to do that nearshore product work, and I'm the founder of Simplify for Kids, a story-based AI learning platform, Sabboura, an AI tutor for Tunisian bac students, and Tnajem, a tutoring marketplace. I also teach computer science at IMSET (part of Honoris United Universities).
I split my week between writing production code, reviewing other people's, and explaining all of it to engineering students. That mix is the whole pitch — I'm a working engineer, not a slide-deck consultant.
A fractional CTO is a senior engineering leader who works part-time — typically 1–2 days a week — with a company that isn't ready for a full-time CTO. They own architecture, code review, technical hiring, and the roadmap, giving startups senior judgment without a full-time salary.
| Fractional CTO | Full-time CTO | Agency / dev shop | |
|---|---|---|---|
| Cost | Monthly retainer, part-time | Full salary + equity | Per-project, often highest |
| Commitment | 1–2 days/week, 3-month min. | Permanent | Project-bound |
| Embedded? | Yes — in your team | Yes | No — external |
| Accountability | Owns technical decisions | Owns everything | Delivers scope, then leaves |
| Best for | Pre/early product, need senior judgment now | Funded, scaling, need a permanent leader | A discrete, well-specified build |
A fractional CTO is a senior engineering leader who works part-time — typically 1–2 days a week — with a company that isn't ready for a full-time CTO. They own architecture, code review, technical hiring, and the roadmap, giving startups senior judgment without a full-time salary.
The fractional-CTO retainer has a monthly starting price and the technical audit is a fixed fee, both shown in the Pricing box on their service pages. The final figure depends on scope and days per week, and you get it in writing before any work starts.
See fractional CTO pricing →A fractional CTO is embedded and part-time, for pre- and early-product teams that need senior judgment now. A full-time CTO is a permanent hire for funded teams scaling fast. An agency delivers a discrete, well-specified build and then leaves. Most early startups need the first.
When you're about to build and don't want to build it wrong; when you've shipped something that's breaking; when there's no senior engineer in the room; when you're raising and need technical credibility; or when you're scaling faster than your stack and team can handle.
A technical audit is a two-week, fixed-scope deep-read of your codebase, infrastructure, and team practices. The deliverable is a prioritised risk register — architecture, security, GDPR, infra, and test gaps — each finding ranked by impact and effort with a concrete recommended fix.
Before a seed round, investors check whether the product can survive growth: architecture, security, GDPR compliance, infrastructure, test coverage and how the team ships. I put the 25 points I see checked most often into a free checklist you can run on your own codebase in an afternoon.
Get the free due-diligence checklist →Yes. I design with GDPR in mind from the start, can host on EU-resident infrastructure when data residency matters, and work under NDA. Tunis is on the same clock as Paris in winter and one hour behind in summer, so nearshoring adds capacity without the compliance or time-zone gaps of far-offshore teams.
Every engagement opens with a short call and a written, fixed scope. Work happens in weekly cycles, and you can pause or end at any agreed checkpoint. You own all code, infrastructure, and documentation throughout, so there's never any lock-in.
Tunis, Tunisia. Tunisia is UTC+1 all year, so I'm on the same clock as Paris, Berlin and Madrid in winter and one hour behind in summer. Your working day and mine overlap almost completely, with none of the gaps that come with far-offshore teams.
French, English, and Arabic — meetings, code reviews, and documentation in whichever suits your team.
I'm happy to work under NDA, and everything I produce — code, infrastructure, and docs — belongs to you. Most of my recent client work is covered by NDAs, which is why some client names are blurred on this site.
Tell me what you're building and where you're stuck. I reply within 48 hours, and if I'm not the right fit, I'll usually know someone who is.