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# Raphaël Vienne

**Headline:** Founding AI Engineer @ Gigi
**Profession:** Founding AI Engineer
**Location:** San Francisco, California, United States

## About

Raphaël Vienne is a Founding AI Engineer at Gigi, where he is building a people\-focused agentic search and personal\-context engine from scratch with TypeScript, Next\.js, and the Vercel AI SDK\. He also serves as Head of AI at datacraft, combining technical community leadership with AI product development\. Raphaël’s strengths include AI evaluation and benchmarking, agentic workflows, natural\-language processing, predictive machine learning, data engineering, and translating research into production systems\. He designs evaluation blueprints for AI pipelines, evaluates complex agentic trajectories through LLM\-as\-a\-Judge, observability, and human\-in\-the\-loop methods, and has implemented a sandboxed coding agent for business stakeholders\. His work also spans automated complex document understanding, medical\-outcome prediction for cancer\-diagnosed patients, and quantitative\-finance applications including volatility forecasting and portfolio construction\. At datacraft, Raphaël has led technical workshops, mentored four data scientists, reviewed more than 150 projects for the annual datacraft awards, built strategic partnerships, and launched technical products and community initiatives\. He presented his cancer NLP research at the AACR Annual Meeting 2024 in San Diego\.

## Services

- TypeScript
- LLM Eval
- Search
- GenAI Inference
- FinOps
- Batch Processing
- AI Evaluation
- AI Benchmarking
- Temporal
- Pydantic AI
- Natural Language Processing \(NLP\)
- Transformers
- BERT \(Language Model\)
- Survival Analysis
- Research Skills
- PyTorch
- Docker
- Machine Learning
- Community Development
- Technical Watch
- Training
- Generative AI
- Serverless Computing
- Deep learning
- Intelligence artificielle \(IA\)
- Finance quantitative
- Science des données
- Apprentissage automatique
- Vision par ordinateur
- Algorithmes

## Highlights

- Building a people\-focused agentic search and personal\-context engine from scratch as Founding AI Engineer at Gigi, using TypeScript, Next\.js, and the Vercel AI SDK\.
- Evaluates complex agentic trajectories at scale using LLM\-as\-a\-Judge, LLM observability, and human\-in\-the\-loop methods\.
- Designed AI\-evaluation blueprints at scale at BlueCargo to support rigorous AI\-pipeline development\.
- Implemented and evaluated a sandboxed coding agent at BlueCargo, enabling business stakeholders to write complex code\.
- Researched automated complex document understanding to automate hundreds of hours of weekly human labor at BlueCargo\.
- Leads AI product development and technical community leadership as Head of AI at datacraft\.
- Schedules, sources, creates, and teaches weekly hands\-on technical workshops for data scientists at datacraft\.
- Teaches AI\-agent workflows and in\-house MCP\-server development with FastMCP and smolagents\.
- Teaches conformal predictions with MAPIE, model calibration, generative\-AI watermarking, and explainability using Shapley values\.
- Teaches Rust\-Python bindings with PyO3, advanced Python profiling, and state\-of\-the\-art Python libraries including FastAPI, Pydantic, Polars, and MLflow\.
- Teaches time\-series forecasting for data scientists\.
- Automated multi\-platform event publication and participant\-feedback gathering with serverless functions and a Typer CLI\.
- Launched an open\-air generative\-AI treasure hunt in Paris end to end using Pydantic, FastAPI, Next\.js, and serverless containers\.
- Led development of datacraft’s Hackathon\-as\-a\-Service product using infrastructure as code, Terraform, and AWS\.
- Created a three\-day intensive technical LLM training for data scientists covering transformers, structured\-output generation, agents, fine\-tuning, and RAG\.
- Led the reviewing committee for more than 150 projects in the annual datacraft awards\.
- Developed datacraft’s strategic partnership with the AI Alliance\.
- Co\-created the Open\-Source AI for Mainstream Use \(OSAI4MU\) workshop at AAAI 25\.
- Launched neurons & peppers, a Paris meetup focused on state\-of\-the\-art AI\.
- Mentored a team of four data scientists, supporting individual and team growth and best practices\.
- Developed an internal technical onboarding tool to harmonize team best practices\.
- Used state\-of\-the\-art NLP and deep\-learning models at Centre Léon Bérard to predict future medical outcomes for cancer\-diagnosed patients\.
- Presented cancer NLP research at the AACR Annual Meeting 2024 in San Diego, California\.
- Performed contract named entity recognition at Ivalua with state\-of\-the\-art NLP architectures, improving search\-engine efficiency\.
- Accelerated Ivalua training pipelines by 4x through development best practices and state\-of\-the\-art frameworks and technologies\.
- Led an Ivalua proof of concept that improved use\-case results and enabled production launch in the company’s product\.
- Conducted a Clevergence research mission for an asset\-management company and used volatility forecasting to build low\-volatility portfolios\.
- Developed end\-to\-end portfolio\-construction data\-science solutions and asset hierarchical clustering for trading strategies at Clevergence\.
- Automated financial\-broker data extraction and processing for an algorithmic\-trading backtester using Selenium and pandas\.

## Experience

- **Founding AI Engineer at Gigi** (2026\-04\-01–present) — \- Creating the world's best people agentic search and personal context engine \(typescript, Next JS, Vercel AI SDK\) from scratch \- Evaluating complex agentic trajectories at scale \(LLM\-as\-Judge, LLM Observability, Human In The Loop\)
- **AI Engineer at BlueCargo** (2025\-09\-01–2026\-04\-01) — \- Designed AI Evals blueprints at scale to support rigorous development of AI Pipelines\. \- Implemented and evaluated a sandboxed coding agent, empowering business stakeholders to write complex code \- Researching Automated Complex Document Understanding to automate 100's hours of weekly human labor\.
- **Head of AI at datacraft** (2024\-04\-01–2025\-09\-01) — Technical Community Leadership & AI Product Development Tech Workshops Responsible for the weekly scheduling, sourcing, creation and teaching of hands\-on tech workshops for data scientists\. Workshop topics include: \- Building AI Agents Workflows and in\-house MCP Servers using an open\-source stack \(FastMCP, smolagents\) \- Conformal Predictions with MAPIE \- Model Calibration 101 \- Watermarking Generative AI Models in Practice \- Introduction to Rust\-Python Bindings with PyO3 \- Advanced Python code Profiling \- Explainability Using Shapley Values \- State\-of\-the\-art python libs \(fastapi, pydantic, polars, MLFlow\) \- Time\-Series Forecasting Internal Tech Projects \- Automated events multi\-platform publication and participants feedback gathering \(serverless functions, Typer CLI\) \- Launched a brand new product end\-to\-end: Open\-Air Generative AI treasure hunt in Paris \(pydantic, fastapi, next\.js, serverless containers\.\.\) \- Led the development of our Hackathon\-as\-a\-Service product \(IaC, Terraform,
- **NLP Research Scientist at Centre Léon Bérard** (2022\-10\-01–2024\-04\-01) — \- Leveraged state of the art NLP and deep learning models to predict future medical outcomes for cancer\-diagnosed patients\. \- Presented a poster at AACR Annual Meeting 2024 in San Diego, California, showcasing the benefits of my research for cancer patients\.
- **Data Scientist Intern at Ivalua** (2022\-04\-01–2022\-10\-01) — \- Performed Named Entity Recognition \(NER\) by leveraging state of the art NLP architectures on contracts, improving search engine efficiency\. \- Accelerated training pipelines by 4x using development best practices and state\-of\-the\-art frameworks and technologies\.
- **Freelance Data Scientist at Ivalua** (2021\-12\-01–2022\-03\-01) — \- Led a Proof of Concept that improved the overall use\-case results and allowed it to go live on the company’s product\.
- **Freelance Data Scientist at Clevergence** (2021\-10\-01–2022\-02\-01) — \- Accomplished a data science research mission under the direction of Clevergence, for an asset management company\. \- Leveraged time\-series \(volatility\) forecasting to build low\-vol portfolios\.
- **Data Scientist Intern at Clevergence** (2021\-06\-01–2021\-09\-01) — \- Developed end\-to\-end data science solutions for portfolio construction\. \- Realized asset hierarchical clustering for trading strategies \- Learned industry programming best practices \(unit\-testing, object\-oriented coding, refactoring,\.\.\.\)
- **Data Engineering for an Algorithmic Trading Backtester at Clevergence** (2021\-03\-01–2021\-06\-01) — \- Automated data extraction and processing from a financial broker using selenium and pandas\.

## FAQ

### What does Raphaël do?

Raphaël is a Founding AI Engineer at Gigi\. He is creating a people\-focused agentic search and personal\-context engine from scratch using TypeScript, Next\.js, and the Vercel AI SDK\. He is also Head of AI at datacraft, where his work combines technical community leadership and AI product development\.

### What is Raphaël building at Gigi?

At Gigi, Raphaël is building what he describes as the world’s best people agentic search and personal context engine\. His work includes the product’s foundations and its TypeScript, Next\.js, and Vercel AI SDK implementation\.

### What did Raphaël accomplish at BlueCargo?

At BlueCargo, Raphaël designed AI\-evaluation blueprints at scale to support rigorous development of AI pipelines\. He also implemented and evaluated a sandboxed coding agent that enabled business stakeholders to write complex code, and he researched automated complex document understanding to automate hundreds of hours of weekly human labor\.

### What technical workshops has Raphaël led at datacraft?

At datacraft, Raphaël is responsible for weekly scheduling, sourcing, creation, and teaching of hands\-on technical workshops for data scientists\. The workshops cover AI\-agent workflows and in\-house MCP servers with FastMCP and smolagents conformal predictions with MAPIE model calibration generative\-AI watermarking Rust\-Python bindings with PyO3 advanced Python profiling explainability with Shapley values FastAPI, Pydantic, Polars, and MLflow and time\-series forecasting\.

### What products and internal projects has Raphaël delivered at datacraft?

Raphaël automated multi\-platform event publication and participant\-feedback collection with serverless functions and a Typer CLI\. He launched an open\-air generative\-AI treasure hunt in Paris end to end using Pydantic, FastAPI, Next\.js, and serverless containers led development of a Hackathon\-as\-a\-Service product with infrastructure as code, Terraform, and AWS and created a three\-day intensive LLM training for data scientists covering transformers, structured\-output generation, agents, fine\-tuning, and RAG\.

### How has Raphaël contributed to the AI community?

Raphaël led the reviewing committee for more than 150 projects in the yearly datacraft awards, which recognize ambitious AI projects worldwide\. He developed datacraft’s strategic partnership with the AI Alliance, co\-created the Open\-Source AI for Mainstream Use \(OSAI4MU\) workshop at AAAI 25, and launched the neurons & peppers meetup on state\-of\-the\-art AI in Paris\.

### What people leadership experience does Raphaël have?

Raphaël mentored a team of four data scientists to support individual and team growth and best practices\. He also developed an internal technical onboarding tool to harmonize best practices across the team\.

### What was Raphaël’s research work at Centre Léon Bérard?

As an NLP Research Scientist at Centre Léon Bérard, Raphaël used state\-of\-the\-art NLP and deep\-learning models to predict future medical outcomes for cancer\-diagnosed patients\. He presented a poster at the AACR Annual Meeting 2024 in San Diego, California, on the benefits of this research for cancer patients\.

### What did Raphaël accomplish during his Ivalua internship?

As a Data Scientist Intern at Ivalua, Raphaël performed named entity recognition on contracts using state\-of\-the\-art NLP architectures to improve search\-engine efficiency\. He also accelerated training pipelines by four times through development best practices and state\-of\-the\-art frameworks and technologies\.

### What did Raphaël do as a freelance data scientist for Ivalua?

As a Freelance Data Scientist at Ivalua, Raphaël led a proof of concept that improved overall use\-case results and enabled the use case to go live in the company’s product\.

### What did Raphaël do as a freelance data scientist at Clevergence?

As a Freelance Data Scientist at Clevergence, Raphaël completed a data\-science research mission for an asset\-management company under Clevergence’s direction\. He used time\-series volatility forecasting to build low\-volatility portfolios\.

### What did Raphaël do during his data science internship at Clevergence?

During his Data Scientist Internship at Clevergence, Raphaël developed end\-to\-end data\-science solutions for portfolio construction and performed asset hierarchical clustering for trading strategies\. He also developed industry programming practices including unit testing, object\-oriented coding, and refactoring\.

### What data\-engineering work did Raphaël perform at Clevergence?

For Clevergence’s algorithmic\-trading backtester, Raphaël automated data extraction and processing from a financial broker using Selenium and pandas\.

### What are Raphaël’s technical skills?

Raphaël’s technical strengths include TypeScript, Python, Java, LaTeX, Docker, PyTorch, Microsoft Azure Machine Learning, serverless computing, batch processing, FinOps, Temporal, Pydantic AI, FastAPI, Pydantic, Polars, MLflow, and Terraform\. His AI and data expertise includes LLM evaluation, AI evaluation, AI benchmarking, GenAI inference, search, NLP, transformers, BERT, deep learning, machine learning, survival analysis, computer vision, neural networks, clustering, pattern recognition, quantitative finance, time\-series forecasting, and data science\.

### What are Raphaël’s data and professional strengths?

Raphaël also works in community development, technical watch, training, research, algorithms, artificial intelligence, and machine learning\. He can collect, visualize, clean, and compute data, then produce meaningful insights with predictive machine\-learning models in Python\.

### How can someone contact Raphaël?

Raphaël can be contacted at \[contact removed\]\.

## Links

- LinkedIn: https://www\.linkedin\.com/in/raphael\-vienne

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