Freelancer profile translated to English.

Description

Web Developer & Creator of Custom Digital Solutions

Looking for a professional, fast, and well-indexed website, or a simple and efficient business tool to save time? I design custom web solutions, from design to deployment.

I am a freelance fullstack developer, specializing in Next.js, React, TypeScript, Tailwind for the front-end and in automation with Python, n8n, or custom APIs on the back-end. I work with freelancers, SMEs, and startups to help them gain visibility, automate their tasks, and digitize their services simply.

What I offer:

Professional & Optimized Websites

Showcase websites and landing pages designed to highlight your business, strengthen your brand image, and generate more leads. Modern design, solid SEO, smooth experience on all devices.

Business Applications & Automations

Dashboards, back-offices, API connectors, document or lead generation, custom alerts… I automate what wastes your time, using simple and useful tools (Python, n8n).

Concrete AI Integration

I help you leverage AI in a relevant way: internal chatbots, intelligent FAQs, automatic classification, assisted search (RAG), content generation, etc.

Why work with me?

✔ A fullstack profile → a single point of contact for the entire project

✔ Useful, readable, reliable solutions

✔ A good understanding of on-the-ground challenges

✔ Simple, direct, and consistent communication

✔ France Num certified (for aid or subsidies if needed)

Need a website, tool, or automation to simplify your life? Let's talk, I'll offer you a clear solution, adapted to your business and your priorities.

Industry field of expertise

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Can work on-site

Paris (up to 20km), Amiens (up to 20km)

AuditZK
Freelance CTO — SaaS Fintech | Next.js, Performance, SEO & Security
CONSULTING AND AUDITS
November 2025 - April 2026 (5 months)
Paris, France
Context
B2B fintech SaaS platform allowing traders and fund managers to prove their performance via cryptographic mechanisms (AMD SEV-SNP secure enclaves), without exposing sensitive data.

Role & Impact
CTO mission covering the entire technical product scope: initial scoping, architecture definition, stack selection, cross-functional audits (performance, SEO, UX, security, code) and support through to production.

Architecture & Stack
Definition and validation of the front-end architecture (Next.js App Router)
Technology selection (Clerk, Stripe, Prisma/PostgreSQL, shadcn/ui, Framer Motion)
Trade-offs based on scalability, maintainability, and fintech constraints

Performance (Core Web Vitals)
Complete Lighthouse audit
Identification of bottlenecks (LCP, CLS, blocking resources)
Prioritization of optimizations to meet Google standards

Technical SEO
Implementation of a scalable SEO architecture
Implementation: dynamic metadata, JSON-LD, automated sitemap
Content structuring (exchange integration pages, knowledge base, blog)

UX, Security & Code Quality
Audit of critical user journeys
Security practices review (API key management, AES-256-GCM encryption, sessions)
Code quality analysis (technical debt, architectural consistency)
Prioritized and actionable recommendations for the development team
Next.js PostgreSQL CTO Fintech SEO
Aspeo
Fullstack Developer | Next.js | TypeScript | React.js
PUBLIC SECTOR
September 2025 - October 2025 (1 month)
Paris, France
Mission Objective:
Completely refactor the GPF Nettoyage website under its new Aspeo identity, with a more professional design, optimized user experience, and improved SEO performance.

Achievements:
Complete overhaul of the showcase website with a new visual identity, redesigned architecture, and content optimized for national SEO.
Creation of detailed and typed service pages (offices, window cleaning, post-construction, etc.) with targeted meta descriptions and segment-specific structured tags.
Implementation of JSON-LD markup to enrich Google search results (LocalBusiness, Service, WebSite schema).
Setup of 301 redirects from the old GPF Nettoyage domain to preserve natural referencing and acquired traffic.
Design of a modern and responsive interface with Tailwind CSS and Shadcn/UI, ensuring a fluid and consistent experience on mobile and desktop.
Technical SEO optimizations: semantic markup, Hn hierarchy, clean URLs, intelligent route preloading, and Core Web Vitals improvement.

Technical Stack:
Next.js, TypeScript, React, Tailwind, Shadcn/UI, Git
Next.js TailwindCSS Typescript React.js SEO
Next-Leads
Fullstack Developer | Next.js | TypeScript | React.js
TECH
September 2024 - October 2024 (1 month)
Paris, France
Mission Objective:
Develop a web application capable of automating local prospecting by identifying and analyzing target companies via Google Maps, while evaluating their web performance to optimize sales actions.

Achievements:
Development of the geolocation search engine based on Google Maps API: identification of local businesses with name, address, website, and contact details.
Integration of Google PageSpeed Insights API to audit the performance, SEO, and accessibility of each identified site.
Development of a clear and responsive interface with Shadcn/UI and Tailwind CSS: fluid lead management, report consultation, and dynamic sorting.
Addition of a CSV export function to facilitate data reuse and analysis.

Technical Stack:
Next.js, TypeScript, Tailwind, Shadcn/UI, Google Maps API, Google PageSpeed API, Git
Next.js TailwindCSS Typescript React.js Git