Freelancer profile translated to English.

Description

Data-oriented Python developer, I help companies structure, analyze, and leverage their data.

I work across the entire data lifecycle:

- Task and Python script automation

- Data collection and integration via API

- Data pipeline creation (ETL / ELT)

- Database design (PostgreSQL)

- Process automation

- Data analysis and provision of key indicators

Beyond the technical aspects, I focus on understanding your business challenges to produce analyses that aid decision-making (performance tracking, segmentation, operational indicators, etc.).

I also work on light Machine Learning cases when they bring real value.

Objective: Transform your data into concrete tools to drive your business.

Approach: Pragmatic, results-oriented, with a strong focus on quality and maintainability.

Languages

Spanish
Conversational
English
Fluent
French
Native or bilingual

Workplace preferences

Can work on-site

Marseille (up to 50km)

Sapiologie
Web Developer Internship
January 2021 - January 2022 (1 year)
Planning, management, and execution of a web development project on a web app built in Elixir / Phoenix Liveview. Learning about Life Cycle Analysis for products mainly from industry.
Python ETL Processes Data Cleaning and Preprocessing Algorithms and Data Structures Data Integration
Sapiologie
Machine Learning Engineer Internship
January 2022 - January 2024 (2 years)
Implementation of a large number of features using LLMs (Prompting, parsing, and automation). Management and execution of Machine Learning and Data Science projects. End-to-end project realization, including data engineering / data analysis and deployment on a launched web app. Implementation of calculation methodologies, including analysis, recalculation, and development of the application's rendering.
Revealead
Freelance Data Engineer
January 2025 - January 2026 (1 year)
Marseille, France
Design and development of data collection and transformation pipelines. Automation of workflows (ETL) and orchestration of processes. Data provision via secure API.
ETL Processes Automation Data Engineering API Data Pipeline

César

CEO - Revealead SAS

Reviewed on 5/16/2026

A second excellent collaboration with Sylvain. Very rigorous, an excellent developer, and possesses very good project management skills. I highly recommend him!

César

CEO - Revealead SAS

Reviewed on 4/16/2026

Excellent collaboration with Sylvain on this project! A very good developer, rigorous, autonomous, and proactive. He quickly understood the technical and business challenges and proposed effective, well-structured solutions. The code quality is excellent, with real attention paid to performance and maintainability. Communication was fluid throughout the project, with clear and regular exchanges. Deadlines were perfectly met, even anticipated. I highly recommend Sylvain for any project involving data, pipelines, or Python/AI development.

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Web and Mobile Developer, Machine Learning Engineer
Développeur web et mobile Ingénieur machine Learning
Preparatory class for mathematics and physics
classe prepa math physique

Check out Sylvain's education

AI engineer

Sylvain Lagarde

Data Engineer | Python & AI | Pipelines & LLM

About Sylvain

Experience

Reviews

5.0

Quality

5.0

Deadline

5.0

Communication

5.0

César

César

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