Freelancer profile translated to English.

Description

Freelance dev Next.js / React, specializing in technical SEO and Core Web Vitals — available for short missions, audits, or part-time (2-3 days/week) starting May 2026.

What I do well, and what I'm remembered for:

- Next.js / React / TypeScript development (feature delivery, refactoring, MVP)

- Technical SEO audit & improvement: crawl, indexing, data structure, tags, server performance — optimizing visibility in search engines (Google, Bing)

- Core Web Vitals: LCP, INP, CLS — audits, Datadog RUM / Lighthouse measurements, remediation plans, and execution

- First dev or tech advisor for a young company wanting to frame without hiring a CTO

- Engineering coaching (Lean, Agile, Tech): supporting an existing Tech Lead or EM

8 years of web engineering: 3 years leading the tech for Sanofi.fr (pro.campus.sanofi.fr — Next.js + headless CMS + technical SEO on a global B2B site, team of 8 devs), 3 years in consulting at Theodo (banking, telecom, retail), and currently CTO of YourField — Next.js SaaS (3M+ aggregated performances) that I'm building in parallel.

On SEO / Core Web Vitals missions: I work on perceived performance (LCP, INP), technical performance (TBT, TTFB), rendering optimization (Next.js SSR / ISR, hydration), and compliance with search engine requirements (Search Console, indexing, sitemap, Schema.org structured data). I use tools and teach you how to understand them.

What interests me: well-defined scopes, fast-moving teams, and clients who prefer a senior dev 2 days/week over a full-time junior.

📩 Available from May 2026 — via Malt or direct message.

Industry field of expertise

Languages

French
Native or bilingual
English
Native or bilingual
German
Conversational
Chinese
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km), Lyon (up to 10km), Bordeaux (up to 10km), Marseille (up to 10km)

YourField
CTO & Co-founder
SPORTS
January 2026 - Today (5 months)
Paris, France
B2B SaaS platform for professional equestrian scouting — multi-source aggregation to help brokers and riders find horses, assess their performance, and receive tailored recommendations. Built end-to-end:
- Multi-source data pipeline (crawlers, deduplication, merge) — over 3 million aggregated performances
- Recommendation engine and administration tools
- Production observability: Datadog RUM + structured logs
Next.js SQL Claude Code Product Development Data Analysis
SANOFI
Tech Lead & Engineering Manager
MEDICAL
January 2023 - April 2026 (3 years and 3 months)
Paris, France
pro.campus.sanofi.fr (Jan 2023 – Jan 2026)
B2B Next.js site + headless CMS. Dev → Tech Lead → Engineering Manager of a team of 8 devs.
- Accelerated feature delivery: LaunchDarkly + DORA metrics
- Technical SEO & Core Web Vitals: comprehensive audit of search engine indexing (Google), tag refactoring, structured data, sitemap. LCP / INP / CLS optimization via Datadog RUM + Lighthouse + Semrush. Quarterly action plans with the marketing team to regain organic search positions.
- Data-driven decisions: Datadog RUM, business KPI monitoring
LaunchDarkly Next.js Datadog SEMrush Tech Lead
Theodo
Lead Developer & Full Stack — Consulting
BANKING AND INSURANCE
January 2021 - November 2022 (1 year and 10 months)
Paris, France
Software engineering consulting firm (Lean methodology). Successive missions on complex client projects (banking, telecom, retail):
• Frontend Lead: building an Angular expert team to reduce technical debt (KPIs, staffing, roadmap)
• Full Stack Lead: MVP and framing of a new banking offer (financing, product discovery)
• Back-end: refactoring a critical production API (clean code, DDD)
Lean management Tech Lead Angular Clean Code Core Web Vitals