Freelancer profile translated to English.
Back to original languageAbout Sébastien
AI Assistants Developer — Claude, OpenAI, RAG, Agents | Next.js & Supabase
I have been designing and developing AI assistants in production since 2023. Claude, OpenAI, agents, RAG, MCP — I know the AI ecosystem in depth, both from a product and technical perspective.
AI Applications — my specialty:
✅ Claude (Anthropic), OpenAI, Gemini
✅ RAG architectures with pgvector / Supabase
✅ AI Agents, function calling, MCP (Model Context Protocol)
✅ Advanced system prompts, multi-model orchestration
✅ Embeddings, semantic search, chunking
✅ Streaming, token cost optimization
My stack:
🔹 Next.js (App Router, Server Components, Server Actions)
🔹 Supabase (PostgreSQL, RLS, Realtime, Edge Functions, pgvector)
🔹 TypeScript, React, Tailwind, shadcn/ui, Vercel
Product vision:
I am developing my SaaS SuperArchi.co — AI workspace for architects. Entrepreneurial mindset: I prioritize user and business impact.
Technical lead: teams of 2 to 15 developers.
Clients since 2009:
Renault Digital, Le Parisien, SQUAD, Reach5, BAM, Wecook, Rue89, Talkspirit, FULLSIX, ISOBAR, AKQA…
What I can do for you:
→ Design a tailor-made AI assistant to automate your business processes
→ Build your company's knowledge base to power your assistant
→ Delegate repetitive tasks of your team to an AI assistant
→ Architect your AI agent (RAG, function calling, MCP, multi-step)
→ Connect your assistant to your tools (Notion, Slack, Google Drive, CRM)
→ Integrate Claude or GPT into your product or internal tools
→ Audit your B2B workflows and quantify the ROI of an AI assistant
French
Native or bilingual
English
Fluent
Spanish
Conversational
Portuguese
Conversational
German
Basic
Japanese
Basic
Remote only
Primarily works remotely
Experience
- bricksapp.ioProduct Manager and Front-End Angular DeveloperARCHITECTURE AND URBAN PLANNINGJanuary 2018 - Today (8 years and 7 months)- User research- Prototyping of new interfaces- Implementation of a design system- Competitive analysis- Prioritization and roadmap
- Renault DigitalFront-End Angular DeveloperAUTOMOBILEJanuary 2018 - October 2023 (5 years and 10 months)Boulogne-Billancourt, FranceIntegrated into a company team, we are currently developing a new application for the Alliance engineering department (Renault-Nissan-Mitsubishi).We apply the Agile methodology in its Scrum version.- Development in TypeScript using the Angular framework- Definition of a coherent and robust Front-end architecture (State Management with Ngrx)- Implementation of 'Smart and Dumb Component', 'One-way Dataflow' principles- Development of generic Directives and Pipes- Use of 'Lazy-loading' modules, 'guards' and 'interceptors'- Unit tests and systematic code review- Functional definition of User Stories and involvement in the app's UX / UIAngular, State Management Ngrx, TypeScript, HTML, SCSS, Git, GitLab, Sonar
- INCO.ORGAgile Coaching + UX / UI Design + Front-End Angular DevelopmentJuly 2020 - October 2020 (3 months)This mission for the Melissa association, which helps refugees in Greece, involved coaching a team located in Greece to create an MVP in a very short time (1.5 months) for an educational application for refugees.The application aims to integrate beneficiaries into their training program, clarify the courses they need to follow, broadcast the association's values, and disseminate informative content in a simple and effective way.My main tasks were:
- Coaching a team of 4 people located in Greece
- UI / UX Design
- Front-end Angular development of an application in Angular 10
Technically, I proposed starting with a monorepo architecture based on the NX framework, which allowed for both front-ends (for the administration page and the user application) on the same codebase, thus easily sharing resources (interfaces, API call functions...)We also tested the Nebular component framework, which provides a uniform appearance and allows for easily adaptable theming.Finally, I produced a design that standardized the web application and provided a direction for future developments, particularly for the mobile application.
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Education
- DPLG Architect DegreeSchool of Architecture of Paris Belleville