Freelancer profile translated to English.

Description

With 5 years of experience in deploying complex Data projects, I support organizations in structuring, validating, and leveraging their data assets.

My expertise lies in data structuring, implementing reliable pipelines, cross-functional analysis, and supporting strategic decision-making.

I also have multi-sector experience (finance, insurance, industry) in developing complex data projects and transformation within business and IT teams.

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

ADP GSI
AI Engineer
DIGITAL AND IT
September 2025 - Today (11 months)
Paris, France
Design and management of a generative AI product translating a complex proprietary payroll language into usable natural language. A demanding challenge combining cutting-edge AI engineering and technical leadership.
End-to-end product management and daily support of 2 junior Data Scientists to ensure their skill development.
Development of generation pipelines (unit and batch) with advanced quota management (TPM). Utilization ofGPT-4.1andClaude Sonnet 4.5withautomatic quality evaluation(generation time: 60-90s).
Creation of a fast semantic search engine (< 7s) onElasticsearch/ AmazonOpenSearch**. Combination **Vectorial+ **BM25**, **Reranking**, Security prompt, and pydantic validation.
Docker deployment, Artifactory, and implementation of complete pipeline observability. Development of an API and a standalone frontend to validate UX and streamline testing.
API Generative AI LLMOps Design Thinking
Bergerat Monnoyeur
Data Consultant
CIVIL ENGINEERING
October 2024 - September 2025 (11 months)
92800 Puteaux, France
Development of an intelligent system to automate the analysis and reverse documentation ofCobol**, **RPG**, **Sequel**, and **CLsource code on AS/400.

Design and development of multi-language staticparsersfor static code analysis, dependency detection, and dead code identification.
Implementation of a vector knowledge base fed by code chunks enriched via LLMs.
**RAG Optimization**, hybrid search, query routing, query rewriting, evaluation.
Development ofmicroservicesenabling code querying via natural language requests.
Performance **evaluation**, unit testing, and implementation of software quality best practices.
LLMOps API Microservices Reverse Engineering RAG
Société Générale
Data Consultant
BANKING AND INSURANCE
August 2024 - December 2024 (4 months)
Fontenay-sous-Bois, France
Support for the migration of a Talend solution to an internal Python-based system.
Automation of Talend job conversion to Python scripts.
Development of flow verification scripts and Python business modules to ensure the integrity of migrated data.
Contribution to migration reliability and treatment industrialization.
Python Optimization

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Elasticsearch Essential Training Getting Started with SAS Programming
Elasticsearch Essential Training Getting Started with SAS Programming
Master of Science - MSc
EDC Paris Business School
2022
Master of Science - MSc

Check out Sem's education

Data Scientist

Backend Web Developer

Sem Egloh Lokoh

AI Engineer

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