"We need a senior engineer who actually owns the backend."
I take full ownership — architecture, code, deployment, and production. Your team ships. I make sure the backend holds.
Open to new projects · Remote, UK / Europe / US
Backend engineer · Founder of Vimatech Ltd — I build and run my own products.
Fix your SaaS bottlenecks.
Scale your backend.
Ship faster.
I help SaaS teams build backend systems that scale — and take full ownership so your team can ship fast without tech debt.
23s → 2s
Client payment API
3M+
Monthly users · Platform I built
Trusted by
NexityOrange CyberdefenseConecsWizaplaceNessma TV
01 Sound familiar?
The problems I was built for
"Our backend is slowing down our product — and every release gets harder."
I remove the bottlenecks, clean up the architecture, and make the system easy to evolve again.
"Our APIs are a mess and we're afraid to touch them."
I redesign APIs to be clean, structured, and ready to scale with your business.
"We're doing too much manually and it's killing our velocity."
I automate the workflows draining your team's time and creating operational risk.
"We want AI features but don't know where to start."
I find where AI genuinely improves your product and build it properly — not a proof of concept.
Sound like your situation? Let's talk →
02 Services
What I help you achieve
01
Scalable backend systems that don't break under growth
Architecture, reliability, and clean code — built to last beyond the first release
02
APIs your team can actually build on
Clean, structured API design — reliable today, built to scale as your product grows
03
Less manual work, more product velocity
Automate the operational overhead that slows your team down every sprint
04
Real AI features, not just experiments
Identify where AI creates actual value in your product and ship it as a real feature — not a demo
03 Proven results
Projects I've delivered
Long-term engagements across regulated industries, high-traffic platforms, and SaaS products. Detailed case studies available on request.
Nexity · France's #1 real estate group · 4 years
Backend & API Modernisation
Technical referent for backend architecture decisions in a multi-team enterprise environment. Led the full production migration from Vue 2 / Nuxt 2 to Vue 3 / Nuxt 3. Conducted code reviews and provided architectural guidance across teams.
LaravelVue.jsNuxtREST APIsCI/CD
→ Tech lead on production migration · Zero downtime · France's #1 real estate platform
Conecs · Regulated payment platform · France
API Performance & Secure Backend
Redesigned and optimised critical APIs for a regulated payment platform handling sensitive financial data. Structured complex business domains using DDD and hexagonal architecture with full auditability.
PHPDDDHexagonal ArchitectureREST APIs
→ API response time reduced from 23s to 2s · Audit-ready in a regulated environment
Orange Cyberdefense · Ongoing
Backend Engineering
Feature development on projects with strong performance and scalability constraints. Involved in architecture decisions, code quality improvements, and collaboration with product, UX and DevOps teams.
PHPLaravelVue.js
→ Production features delivered on enterprise cybersecurity software · Active engagement
Nessma TV · International media network
High-Traffic Web Platform
Built and maintained web applications and REST APIs for a media platform with a large regional and international audience. Focused on performance, caching, and SEO for content-heavy systems.
PHPREST APIsMySQLRedis
→ 3M+ unique monthly users · High-availability production systems
Wizaplace · Multi-tenant SaaS marketplace
SaaS Platform Engineering
Built and extended a large Symfony-based multi-tenant marketplace platform. Designed REST APIs and a PHP SDK to enable third-party integrations for external clients and partners.
PHPSymfonyREST APIsSDK
→ Core PHP SDK used by every Wizaplace client — the backbone of all marketplace deployments
Need results like these? Book a 30-min call →
Products I build & run
Live SaaS products I design, build and operate end-to-end under Vimatech Ltd — real skin in the game, not side projects.
MakeResume
LiveSaaS résumé builder
Résumé builder designed, built and operated end-to-end — auth, subscription payments, PDF generation, AWS infrastructure and monitoring. Live with paying subscribers in 8 languages.
LaravelVue.jsStripe
makeresume.io → Rendevo
Coming soonTurn your booking page into a qualification funnel
Lead-qualification layer that filters and routes leads before they reach your calendar — template-based funnels, a decision engine, and Google / Outlook booking. Multi-tenant SaaS billed per workspace.
LaravelNuxt 4Inertia.js
rendevo.com → MakeInvoice
Coming soonCompliant invoicing in 60 seconds
Compliant e-invoicing for France and the EU — multi-country Peppol / PDP rails with integrated payment collection. Subscriptions via Paddle, client payments via Stripe Connect.
LaravelVue 3Inertia.js
makeinvoice.io → Open source
laravel-einvoicing
Open sourceNative Peppol BIS 3.0 (UBL) & EN 16931 e-invoice generation and dispatch for Laravel — built directly on PHP's ext-dom with zero third-party runtime dependencies. Pluggable networks (Peppol access points, French PDPs) with per-country routing.
PHP · Laravel · Peppol / UBL
laravel-secure-fields
Open sourceLaravel package for field-level encryption on Eloquent models — AES-256-GCM encryption with a natural developer experience. Built for GDPR and HIPAA compliance contexts.
PHP · Laravel · AES-256-GCM
WarpPHP
ExperimentalA PHP compiler written in Rust that compiles a subset of PHP to native machine code via a custom SSA IR and an LLVM backend. Exploring ahead-of-time compilation for serverless, edge, and high-density workloads.
Rust · LLVM · Compilers
04 Why me
Why work with me
I take responsibility for your backend — not just the code
Architecture decisions, code quality, production reliability — I own it end to end, not just the ticket assigned to me.
I optimise for your outcomes, not engineering vanity
The goal is a system that serves your business. I cut complexity that doesn't earn its place.
3M+ users. Regulated platforms. Zero tolerance for downtime.
I've built and maintained systems where failure is not an option — and delivered under the pressure and constraints that matter.
I can lead, not just execute
Code reviews, architecture guidance, cross-team alignment — done at enterprise scale, across multi-team environments.
05 Testimonials
What clients say
“A developer I trust completely. He gets up to speed fast and delivers quality work. He works equally well independently with a PO or within a larger development team. I highly recommend him.”
Adrien P.
Engineering Manager · Nexity
Le Hibou
December 2024
“I worked with Adel for 3 years at Nexity. A serious and reliable developer, always focused on code quality and project delivery. He integrates quickly into a team, takes initiative, and delivers on time. I recommend him for backend/fullstack missions in demanding environments.”
Mokhtar O.
Full Stack Engineer · Nexity
May 2026
06 Discovery call
What we'll do in a discovery call
In 30 minutes, here's what you'll walk away with:
- Review your current product and architecture
- Identify key technical or product challenges
- Outline a clear path forward
This is not a general chat — this call is focused on your project and next steps.
07 Engagements
How we can work together
Backend ownership
Main3–4 days/week · 3–6 months minimum
→ For teams who need a dedicated backend owner
From £700/day · $950/day · €800/day
Targeted intervention
Fixed scope · 2–4 weeks
→ For critical backend problems with a clear objective
Fixed-price · scope on request
Book a discovery call
Focused 30-min call to review your backend challenges and identify next steps
Contracts in GBP · USD · EUR
About
Built for high-traffic platforms and regulated environments.
SaaS companies hit a wall when their backend can't keep up — slow APIs, fragile architecture, and tech debt that blocks every new release.
I'm Adel Zemzemi, a backend engineer based in Paris and founder of Vimatech Ltd. I've built and scaled production systems for high-traffic platforms — from a TV network serving 3M+ monthly users to France's #1 real estate group.
Beyond client work, I build and run my own SaaS products under Vimatech Ltd — MakeResume, Rendevo and MakeInvoice — plus a suite of open-source packages used in production Laravel apps. I know what it costs to own a system in production, because I carry that cost every day on my own.
I work with SaaS founders and CTOs who need full technical ownership: architecture decisions, API design, code quality, and production operations — not just ticket execution. Available for clients across the UK, US, and Europe.
07 Let's talk
One conversation.
A clear technical
path forward.
You have a critical backend to fix or scale.
We frame your project in 30 minutes with a clear technical path forward. No commitment.
Book a discovery call →You prefer to start async.
Send a quick brief. I'll reply within 24h with a direct technical take on your situation.
Email me directly →