Thomas Chaigneau

Co-Founder

France2 yrs 3 mos experience
AI EnabledHighly Stable

Key Highlights

  • Expert in building production-grade AI systems.
  • Proven track record in B2B AI product development.
  • Strong focus on cost-efficient AI infrastructure.
Stackforce AI infers this person is a B2B AI Engineer with expertise in healthcare and machine learning solutions.

Contact

Skills

Core Skills

Ai EngineeringLlm DevelopmentHealthcare AiBiomedical AiData EngineeringMachine LearningApi Development

Other Skills

LLMsagentic workflowsRAG pipelinesAI backendsAPIsPythonTypescriptRustgraph-based AIdata sourcesescalationstate persistenceRAG systemsPubMedquestion answering

About

I’m a bootstrapped founder and AI engineer building and operating AI-powered products. My background is in production-grade AI systems (LLMs, data pipelines, infra), and I currently work B2B with AI startups while building my own products. I focus on: • designing AI systems that actually ship • making the right build vs buy decisions • keeping AI infrastructure simple and cost-efficient Current projects include LocalClip.app, a local-first tool for content creators.

Experience

2 yrs 3 mos
Total Experience
2 yrs 3 mos
Average Tenure
--
Current Experience

Chaptr

Senior AI Engineer

Mar 2026Present · 2 mos · Berlin, Germany · Remote

Mistral ai

Senior Data Annotator

Mar 2026Present · 2 mos · Paris, Île-de-France, France · Remote

Chny software

Founder & AI Engineer

Jan 2026Present · 4 mos · Paris, Île-de-France, France · Remote

  • I build and ship production AI products and deliver hands-on AI engineering for B2B clients.
  • My work focuses on LLM-powered systems: agentic workflows, RAG pipelines, and AI backends used in real applications. I work end-to-end, from architecture and prototyping to production deployment and iteration.
  • What I typically do:
  • Build LLM agents with tool-calling, memory, and control logic
  • Design and ship RAG systems (ingestion, embeddings, vector stores)
  • Develop AI backends & APIs (Python, Typescript or Rust)
  • Ship AI-powered web and mobile apps (SaaS, internal tools, automation)
  • I’m used to delivering in high-constraint environments (healthcare, biotech), where reliability, grounding, and traceability matter as much as speed.
LLMsagentic workflowsRAG pipelinesAI backendsAPIsPython+4

Elys health

Founding AI Engineer

Jan 2026Feb 2026 · 1 mo · Dallas, Texas, United States · Remote

  • I designed and implemented a graph-based, safety-first AI concierge that explains medical results using selective data sources, enforces escalation and state persistence, and ensures grounded, auditable responses for sensitive healthcare use cases.

Owkin

2 roles

Machine Learning Engineer II

Promoted

Jan 2025Jan 2026 · 1 yr · Remote

  • Created an entire RAG system around the PubMed database to allow The Biomedical team to speed their research by 3x with question answering and data sourcing with no hallucinations

Machine Learning Engineer I

Oct 2023Jan 2025 · 1 yr 3 mos · Remote

  • Developed an unified framework to load data 10x faster and with data validation across all public Health datasets.

Wordcab

2 roles

ML Engineer / Dev Evangelist

Feb 2023Oct 2023 · 8 mos

  • Trained multiple LLMs from large to XXL sizes, using Supervised Fine-tuning (sft) and RLHF: Flan-t5, Llama, GPT-J.
  • Created an optimized the best open-source ASR tool using Openai Whisper and NVIDIA NeMo.
  • Created an internal framework to efficiently train and expose LLMs on GCP using one or multiple GPUs and request batching when possible.
  • Maintained a Python SDK, a Slack bot, and a Discord bot that allows users to interact with our Summarization API in seconds.

ML Engineer / Dev Evangelist

Oct 2022Feb 2023 · 4 mos

  • Created a Python SDK to communicate with Summarization API, including robust testing and good development practices.
  • Developed a benchmark tool that automates gathering summaries from multiple APIs.
  • Updated API documentation and user guides for the different API endpoints.

Crédit mutuel arkéa

2 roles

Machine Learning Engineer

Jun 2022Feb 2023 · 8 mos · Brest, Brittany, France

  • Led the training of huge models on multi-GPU instances on GCP and determined the best practices according to the company policies.
  • Deployed a self-managed MLFlow instance with artifacts storage on S3 buckets, associated with a Python package that handles all user's configuration variables.
  • Designed Agile/Git workshops to standardize the AI team's project management and code workflows.

Machine Learning Engineer

Jun 2021May 2022 · 11 mos · Brest, Brittany, France

  • Deployed the first Computer Vision model in production by training a model from scratch, building an API and deploying it on the company private servers.
  • Initialized deep learning models conversion to ONNX for multiple projects and models by creating guidelines and documentation for my team.
  • Contributed to develop, document and extend the use of an internal ML app deployment template by supervising releases and upgrades.
  • Developped multiple applications to showcase ML usage with coworkers by building and deploying Streamlit apps.
  • Explored a new solution for document classification by fine-tuning a LayoutLMV2 model in order to demonstrate feasibility.

National education

Stagiaire Education National

Jan 2019Jan 2020 · 1 yr · Brest, Brittany, France

Le groupe la poste

Facteur

Feb 2018Aug 2018 · 6 mos · Compiègne, Hauts-de-France, France

Chanel

Manutentionnaire

Jul 2015Aug 2015 · 1 mo · Le Meux, Hauts-de-France, France

Sanofi

Service QII

Jul 2014Aug 2014 · 1 mo · Compiègne, Hauts-de-France, France

Education

Ecole Microsoft IA

Développeur IA — Intelligence artificielle

Sep 2020Jun 2022

INSPE de Brest

Master MEEF PE

Jan 2018Jan 2020

Université de Picardie Jules Verne (Amiens)

Licence de biologie — Sciences et Vie de la Terre et de l'Univers

Jan 2014Jan 2018

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