Freelancer profile translated to English.

Description

Senior Web Developer - React, Next.js, TypeScript, Node.js.

17 years of experience, including several years in technical leadership roles.

I design and develop custom web applications, and I take over those that are no longer viable.

━━━━━━

What I do

Custom Web Development

React, Next.js, TypeScript, Node.js. SaaS, business tools, client portals, back-offices. From scoping to production.

Redesign / Modernization of Existing Apps

An aging, slow application, or one inherited from a departed provider? I take over the code, stabilize it, and evolve it without throwing everything away.

Bubble, Webflow, and No-Code Migration

Your Bubble, Webflow, or Airtable is reaching its limits: slow performance, escalating costs, impossible-to-add features? I migrate your application to a modern stack, without losing your data or your users.

Technical Audit

You're inheriting a project, doubting a provider, or preparing for fundraising? I analyze the existing system, identify real risks, and deliver a quantified and prioritized action plan within 10 days.

━━━━━━

My way of working

I don't just execute a spec sheet. I first try to understand why you want it.

I regularly act as an outsourced CTO for leaders without a technical team: I challenge needs before coding, structure the roadmap, arbitrate technical choices, and explain them to you in plain language.

What this means for you

An application built to last.

Code that the next developer can take over – you're never locked in.

Technical debt avoided upfront rather than paid three times over later.

━━━━━━

SMEs, mid-sized companies, startups, SaaS publishers, or non-technical leaders who want an interlocutor who speaks their language.

CII Approved: up to 20% of my fees refunded as tax credit.

First consultation free and without obligation – let's talk about your project!

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Remote only

Primarily works remotely

KevinDumont
On Malt
Post-MVP Support The Engine
RETAIL (SMALL BUSINESS)
April 2026 - July 2026 (3 months)
Development of a social network action automation SaaS.
Design of a per-user queue system to orchestrate large-scale message and invitation sending.
- Queue-oriented architecture (asynchronous jobs, per-account rate limiting)
- Multi-tenant management and user workflow isolation
- Retry system and task monitoring
- CI/CD and automated testing
- Clean architecture
Stack: React, TypeScript, Node.js, Supabase
React.js Web Developer TypeScript Developer SAAS Clean Architecture
The Game France
Website Redesign
March 2026 - July 2026 (4 months)
Redesign of the showcase website with SEO optimization and an immersive user experience approach.

- UI Redesign
- Custom component development for Payload CMS
- Core Web Vitals & Speed Index Optimization
- Mobile First

Stack: Astro (React), Payload CMS, MongoDB, TypeScript, Tailwind
Astro React.js Payload CMS Typescript Web Developer
Stride-up
CTO - Developer
DIGITAL AND IT
October 2025 - Today (10 months)
Technical audit and architecture plan for a post-MVP SaaS.
Application unstable after 9 months of development, unable to scale.

- Comprehensive audit: codebase, architecture, security, performance
- Technical debt identification (estimated 45-50 days)
- Critical vulnerability analysis (API validation, asset storage, security)
- Prioritized remediation roadmap in 4 phases
- Post-audit support: implementation of recommendations
- Development of new features on a cleaned-up foundation

Stack: Next.js 15, TypeScript, Zustand, Tailwind, Shadcn

Deliverable: complete audit report + action plan + execution
Next.js Development Next.js Developer Audit Front-End Development Back-End Development

Check out Nicolas's experience

Kévin

CEO de The Engine - KevinDumont

Reviewed on 5/5/2026

I hired Nicolas to be the 'firefighter' for my coded app. He fixed all the bugs in a few days of work. And I'm continuing the collaboration with him for new features. Very good professional, conscientious and pragmatic! I recommend him.

Hadi

Audit MVP - MH DEV SOLUTIONS

Reviewed on 4/17/2026

After our MVP phase, we needed an external perspective to prioritize tasks before scaling. Nicolas provided a clear diagnosis, delivered a solid remediation roadmap for technical debt and vulnerabilities, and assisted us in monitoring its implementation. Pragmatic, rigorous, and he understands post-MVP realities well. I recommend him.

Show all 3 reviews