Freelancer profile translated to English.
Back to original languageAbout Gaël
Looking for a senior Product Engineer who can take the lead on a product, a redesign, or an AI feature? With12+ yearsof experience in startups, SaaS, and product development, including several early-stage founding engineer roles, I bring product culture, architectural vision, and the ability to deliver quickly.
I work at the intersection of product, full-stack architecture, and applied AI. I can help you frame, design, and productionize reliable web products, internal tools, AI integrations, or AI agents connected to your business tools.
I explore and integrate AI into my daily work: LLM prototypes, AI agents, automation, and AI code agents to prototype faster, accelerate delivery, and maintain a high level of product and technical standards.
Key experiences:
- **L'Oréal**: Launched an impactful internal product from scratch, combining an analytical dashboard, AI workflows, and a business agent to explore e-retailer data at scale, identify insights, generate alerts, and trigger business actions.
- **Wizbii**: Product development on a high-traffic platform used by **10M+ members**, contributing to search, social features, real-time messaging, notifications, and data architecture.
- **Side projects**: Products launched from scratch, including Churni, a customer retention SaaS, Occaz.io (~2000 users/day), and GW2Build (4M+ visits).
English
Fluent
French
Native or bilingual
Can work on-site
Lyon (up to 50km), Paris (up to 50km), Marseille (up to 50km), Bordeaux (up to 50km), Montpellier (up to 50km)
Experience
- L'Oréal S.A.Senior Product Engineer · Internal AI Product from ScratchLUXURY GOODSFebruary 2026 - Today (4 months)Paris, FranceLaunched aninternal AI productfrom scratch using large-scale e-retailer data.The product combines analytics onBigQuery**, a **LookerMLsemantic layer, dashboards, AI workflows, and aGoogle ADK-based AI agentto help business teams explore retail data, detect insights, generate alerts, and facilitate action.I contributed to product framing, full-stack architecture, business interface development, AI/LLM component integration, and the productionization of a reliable and usable tool.Stack: React, TypeScript, Node.js, BigQuery, LookerML, GCP, Google ADK, Applied AI, LLMs, AI agents, large-scale data, data visualization, analytical dashboards, business workflows.
- Lazy LabsFounding Engineer · AI/RAG Knowledge Management ProductSOFTWARE PUBLISHINGNovember 2021 - December 2025 (4 years and 1 month)Paris, FranceFounding engineer at Lazy, on a desktop/web product for capture and knowledge management with AI/RAG features.I contributed to building the product from scratch across a broad scope: full-stack architecture, product foundations, capture workflows, desktop/web experience, browser extension, AI integrations, and RAG capabilities.The product saw strong early-stage traction: 50k+ sign-ups on the waitlist, ~1,000 Product Hunt upvotes, and 1,000+ paying users.Key Contributions:
- Built the product from scratch within the founding engineering team
- Full-stack architecture on desktop (Electron), web (Next.js), backend (API Platform), and local-first storage
- Local-first sync engine inspired by Linear, with a storage architecture designed for fast capture, offline use, and multi-device synchronization
- AI/RAG features: summarization, extraction, categorization, semantic search, and AI assistant based on a RAG approach
- Stripe billing, subscription plans, free trials, and feature gating
- Browser extension and native capture integrations
- Third-party integrations: Notion OAuth and dual-save workflows
Key Topics: React, TypeScript, Node.js, Electron, Next.js, browser extension, Notion API, Stripe, PGLite, local-first, sync engine, applied AI, RAG, LLMs, semantic search, knowledge management, capture workflows, product engineering. - beta.gouv.frSenior Fullstack JS DeveloperPUBLIC SECTORSeptember 2020 - November 2021 (1 year and 2 months)Paris, FranceSenior Fullstack JS Developer on the "Résorption-Bidonvilles" product, a government startup within the beta.gouv.fr network, assisting public and field actors in coordinating their actions to accelerate slum clearance and support residents' integration.I worked on product evolution, platform reliability, and user experience improvement for a high-impact digital public service.Key Contributions:
- Implemented a new design system and contributed to the site redesign.
- Improved performance by migrating a single-page application to a statically generated site with Gridsome.
- Developed transactional email workflows with MJML and scheduled jobs.
- Added Cypress tests for critical user journeys.
- Backend evolutions with Node.js and PostgreSQL.
Key Topics: Vue.js, Node.js, PostgreSQL, Docker, Cypress, MJML, Gridsome, public sector, product engineering.
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Education
- Master MIAGEGrenoble2014
- IUT R&TAnnecy2011