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Damien ButyDB

Damien Buty

Senior Back-end Node developer

€650/day
Bordeaux, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Damien

I spent the last 7 years in very early-stage startups likeComet(where I was employee #10) andFigures(employee #4). I was able to hone my pragmatism and focus in highly uncertain contexts and with limited resources.

I am primarily experienced in theNode.jsstack, particularlyTypescript + Reactand its entire ecosystem (Next,Prisma,GraphQL, etc...).
Through my experiences, I have also developed my skills inPython, whether for application development or basic data engineering.
More recently, I had the opportunity to dive into LLM stacks (LangChain,LlamaIndex,Literal AI). In an environment still dominated by the hard-science aspect, I was able to bring my softer, product- and user-experience-oriented perspective.

If you are looking for a freelancer who is not afraid to talk to users, challenge product decisions, and negotiate cross-team results -let's discuss!

By the way, I've been full-remote since 2012 🏝️✌️
  • German

    Basic

  • French

    Native or bilingual

  • Spanish

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Bordeaux (up to 50km), Bordeaux (up to 100km)

Experience

  • Siana
    Acting CTO
    REAL ESTATE
    October 2024 - Today (1 year and 8 months)
    Paris, France
    **Backend Stack**: Typescript, Nest.js, GraphQL, Zod, OpenAI API

    **Mobile Stack**: React Native, react-native-ai


    Design and development of a mobile copilot for real estate agents.

    • Chatbot integration: react-native-ai, generative UI, tools calling
    • Extraction of structured data from voice or text notes: OpenAI Whisper & gpt-4 with Structured Output

    Typescript React Native LLMs NestJs Node.js OpenAI GraphQL
  • Chainlit by Literal AI
    Senior Software Engineer
    May 2024 - September 2024 (4 months)
    Paris, France
    **Typescript Stack**: React, Next.js, Prisma, Kysely

    **Python Stack**: asyncio, pydantic
    • Lead developer for Python & Typescript SDKs
    • Maintenance of official documentation and associated cookbooks
    • Integration with LLM frameworks like LangChain, Vercel AI, LlamaIndex, and model providers like OpenAI, Mistral
    • Contribution to open-source projects like LlamaIndex
  • Figures
    Senior Software Developer
    November 2021 - May 2024 (2 years and 6 months)
    Paris, France
    🥇 First hire in the tech team


    **Stack**: Typescript, React, Prisma, Next.js
    • Technical lead for integration with HR systems (Payfit, Lucca, Personio, etc...)
    • Domain expert in customer onboarding and technical support
    • In collaboration with Product and Customer Success teams: writing technical and non-technical documentation, assisting strategic clients
    • Feature lead on various projects (generally with a team of 2 developers for sprints of 2 to 6 weeks)
    • Mentoring, leading workshops (unit tests, advanced Typescript, SQL optimization)

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Education

  • DEUG in Language, Literature, and Civilization of English-speaking Countries
    Bordeaux 3
    2002
    Etudes de littérature et d'histoire Anglaises et Américaines.
  • BTS in Management Information Technology
    EPSI Bordeaux
    2004
    BTS Informatique de Gestion spécialité Développeur d'Application, obtenu avec la mention Assez Bien

Skill set

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