Freelancer profile translated to English.

Description

I assist you in the design, development, and deployment of custom digital products: mobile applications, websites, AI integrations, and automations.

My approach is based on three principles:

Listen before coding.Every project starts by understanding your business, your constraints (budget, timeline, target audience), and the problem to be solved. I take the time to define a clear scope, identify risks early, and prioritize what truly adds value for your users. This upfront work allows us to choose the technology best suited to your needs—not just the trendiest.

A single point of contact from start to finish.I cover the entire process: specifications, data modeling, back-end, front-end, third-party integrations, testing, and deployment. You benefit from clarity and responsiveness, without dealing with multiple vendors passing the buck. Regular communication, intermediate demos, and transparent progress updates.

Deliver a working product, not just a demo.Go-live, user monitoring, adjustments, documentation, and ongoing maintenance if needed. Your satisfaction is my only metric.

What I can do for you:

- Cross-platform mobile applications (React Native, Expo, TypeScript) — from data schema to app stores

- Modern websites (React, Next.js, WordPress) — showcases, MVPs, business sites

- E-commerce (Shopify) — stores, payments, automations

- AI integrations (Anthropic Claude, OpenAI) — chatbots, content generation, classification

- Back-end (Supabase, PostgreSQL, Node.js, Python) — RLS, end-to-end encryption, GDPR

Industry field of expertise

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Remote only

Primarily works remotely

Projet entrepreneurial — R&D produit
Full-stack Designer & Developer — AI SaaS Application
SOFTWARE PUBLISHING
May 2026 - May 2026
End-to-end design and development of a web SaaS application for assisted generation of long, structured documents using the latest generation large language models.

Stack: Next.js 16 (App Router, React 19), TypeScript, Tailwind CSS, shadcn/ui, Drizzle ORM + SQLite, AI SDK (Vercel) with multi-provider integration (Anthropic Claude + OpenAI GPT, chosen per project).

Key Features:

- Multi-stage generation pipeline with strict Zod validation of LLM structured outputs

- Real-time client-side JSON streaming (streamObject + useObject), tolerant to partial errors

- Multi-format export: native PDF (Chromium headless, 3 layouts), handwritten DOCX, EPUB, responsive HTML, Markdown — complete French typography (guillemets, non-breaking spaces, italics)

- Versioned system per artifact, restoration, comparison

- Inline manual editing + "2nd draft" zone (AI version vs. revised version) with selective export

- Versioned prompts engineering and cost logging per call

Product work: architecture, DB schemas, prompt engineering, LLM integration, UX design, design system, exports.
Next.js TypeScript React OpenAI Fullstack
Indépendant
Design and Development of a B2C Mobile Application with Conversational AI
SOFTWARE PUBLISHING
April 2026 - April 2026
Stack and achievements:

- React Native + Expo SDK 54, strict TypeScript, Expo Router v6, native dark mode.

- Supabase Backend: PostgreSQL schema (20+ tables), versioned migrations, owner-based Row Level Security, triggers, constraints, indexing.

- Email/password authentication, persistent sessions, AppState refresh, multi-step onboarding.

- Anthropic Claude API via Deno Edge Functions: structured daily digest (JSON), multi-turn contextual chat, document generation, file classification. Enriched prompts (profile, memories, calendar, holidays, relationships) with orchestration rules and guardrails.

- End-to-end client-side encryption (scrypt + tweetnacl secretbox), keys in expo-secure-store.

- Calendar: events, recurring slots with holiday breaks, automatic school holidays by zone (data.gouv.fr + geoloc + reverse-geocoding), public holidays (Butcher), saints of the day, mobile civil holidays.

- Native import of .ics from third-party apps (iOS deep linking + Android intent filters), photos/PDFs, ready-to-send documents.

- Performance: paginated FlatList carousels, windowed fetching, useMemo/useRef for callback stability, pinch-to-zoom.

- Security: strict exclusion of health data from AI context, client/server separation, secrets in env, RLS on all requests.

Product developed autonomously: product, design, dev, ops, Supabase go-live, Expo / EAS deployment.
React Native TypeScript Supabase PostgreSQL Generative AI
Projet entrepreneurial — R&D produit
Lead Full-stack Engineer — Data-Intensive Web Platform
March 2026 - March 2026
End-to-end design and development of a data-intensive web platform combining multi-source ingestion, advanced heuristic parsing, real-time scoring, and a polished product UI.

- Architecture & Stack: Next.js 16 (App Router) + TypeScript, Tailwind CSS v4, Supabase (Postgres + Row Level Security + Auth magic link), Vercel Functions (Fluid Compute) + Cron Jobs deployment.

- Data Pipelines: connectors to ~6 external sources (official REST APIs + resilient HTML scraping with anti-bot bypasses for protected sources), normalization and deduplication via composite keys, business indicator calculation in PostgreSQL views.

- Parsing & Quality: entity extraction engine based on contextual regex + business dictionaries, fraud detection (keyword stuffing, clones, price anomalies) with configurable sanity checks per category, status classification with multipliers.

- Scoring & Product UX: complete cost model (platform fees, inbound/outbound port, variable fees per source), weighted score 0-100, filterable dashboards, live fuzzy search, on-demand scan, visual decision-support badges.

- Security & Rigor: Postgres RLS, secrets in environment variables, never client-side service-role, versioned migrations, integration tests on critical functions.

Personal project led solo, from ideation to operation, with a strong focus on data reliability and UX.
Next.js TypeScript PostgreSQL Fullstack Web Scraping