Freelancer profile translated to English.

Description

Senior Full-Stack Software Engineer(React · Node.js · AWS) specializing inAI integrationin production.10 yearsdelivering end-to-end web & mobile products; today, I'm placing LLMs at the heart of products to automate business processes.

What I do with AI:

• LLMs (Claude, GPT, Gemini) in your products: assistants, chatbots, agents, content generation

• Natural language assistants: secure text-to-SQL, on-the-fly generated dashboards

• Automation: translation, code/interface generation, data extraction and classification

• Agentic development (Claude Code): deliver more, faster, with quality

Product side:

• Your web or mobile product from A to Z (front, back, cloud)

• Robust and scalable AWS serverless architecture

• Taking over, stabilizing, and scaling an existing application

My reference — Gayakoa (Event SaaS):I designed and evolved the complete platform (700+ events, 600,000+ users). On the AI side: 'Maya', a natural language assistant that generates secure SQL queries and visualizations on the fly (Claude API, tool use, streaming), plus multilingual translation and LLM-powered UI generation. Platform: AWS serverless (~500 endpoints), real-time (WebSockets, streaming), 40,000+ invoices / €7M+, facial recognition, Stripe / SumUp payments.

My stack:

• AI — LLMs (Claude, GPT, Gemini), API integration, agents, RAG, prompt engineering, Vercel AI SDK

• Front — React, React Native, TypeScript

• Back — Node.js, REST API, serverless

• Cloud — AWS (Lambda, API Gateway), CI/CD

• Data — SQL / NoSQL, Stripe, SumUp, WebSockets

Autonomous, production-oriented, experienced in Agile. Remote (FR / EN). Let's talk about your project!

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Gayakoa
Senior Full-Stack Developer
December 2018 - Today (7 years and 7 months)
Bordeaux, France
All-in-one SaaS platform for event organization. I designed, developed, and evolved the complete ecosystem — serverless microservices architecture on AWS — from the first line of code to large-scale operation: 700+ events, 600,000+ users, up to 26,000 participants for a single event.

AI in production
- 'Maya' — natural language analytics assistant: secure SQL queries and on-the-fly generated visualizations (Claude API, tool use, streaming), shareable reports and dashboards
- LLM-powered automation: multilingual translation, AI-assisted interface generation, data-connected chatbot
- Facial recognition (AWS Rekognition): automatic attribution of 28,000+ photos

Back-end & architecture
- REST API in microservices on AWS Lambda / API Gateway (Serverless Framework), MySQL/Aurora + migrations (Knex), CloudWatch monitoring
- Real-time (WebSockets): live video streaming, live voting and notifications
- Multi-tenant security (anti-IDOR, scoped API keys, OTP), CI/CD dev/prod, Jest & E2E Playwright tests

Front & back-office (React)
- About ten specialized apps: payments, invitations, exhibitors, networking/meetings, badge scanning, stats, white-label portals (e.g., Crédit Agricole)
- Full admin: canvas badge/ticket editor (Konva), QR & barcodes, rich text editor, dashboards, Excel import/export

Key features
- Programmatically generated PDF invoices: 40,000+ invoices, €7M+ issued
- Stripe & SumUp payments, large-scale emailing & SMS (Brevo/Mailjet, Spot-Hit): 500,000+ sent
- React Native & Flutter mobile apps, no-code WordPress plugin

Stack:React, Node.js, AWS (Lambda, API Gateway, Serverless), MySQL, Knex, WebSockets, Claude / LLM, Stripe, pdf-lib, Konva, React Native, Flutter
React.js Node.js Amazon Web Services React Native SQL
Professeur Caché
Full-Stack Developer
December 2022 - March 2023 (3 months)
Development of an application from scratch, independently handling the entire stack.

• Architecture design, front-end and back-end development, up to production deployment
• Short delivery cycle (React / Node.js / AWS)

Stack: React, Node.js, AWS
React.js Node.js Amazon Web Services PostgreSQL Websocket
Ideel
Front-End Developer
July 2022 - August 2022 (1 month)
Front-end support within the product team, on a short and defined mission.

• Client-side feature development in React
• Integration of interfaces and UI components

Stack: React
React.js