Freelancer profile translated to English.

Description

Data engineer | Fullstack Developer

My professional experience focuses on projects that start from a data problem: sources to consolidate, flows to make reliable, business logic to model. Sometimes the result is a warehouse, sometimes an API, sometimes a dashboard for business teams, depending on the need.

At Varenne Capital (2021-2024), I first spent time understanding the data before touching the architecture. There were many sources (CapitalIQ, Factset, Compustat, S3, Excel files driven by VBA, public data to scrape) and each had its own structural challenges. I mapped the gaps, duplicates, and contradictions between providers before writing anything. The result: a unified PostgreSQL data warehouse that drew its sources from the data lake.

Since 2024, I have been working on SaaS product development and data flow automation.

Before that (2019-2020, alongside my studies), I collected web data and collaborated on the creation of a React/Express platform. That's where I started working seriously with data.

Languages: TypeScript, Python, Java, SQL, VBA

Frameworks: Angular, Spring Boot

Data Engine: PostgreSQL, MongoDB, ClickHouse

Automation: n8n, Airflow, Spring Batch

BI: Tableau, Power BI

Cloud & Infra: Supabase, Terraform

Versioning: Git

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 30km)

Freelance
Data engineer | Fullstack Developer
January 2025 - Today (1 year and 5 months)
Paris, France
I assist companies in creating their SaaS product, from idea to production.
I also help companies better leverage their data and automate time-consuming tasks — from auditing existing flows to deploying automated workflows.

In parallel, I am developing an open-source Angular library dedicated to workflow management (work in progress).

Stack: Angular, Spring Boot, PostgreSQL, Python — Tools: Supabase, n8n, Airflow.
Angular Supabase Python PostgreSQL Automation
Varenne Capital Partners
Database Engineer
February 2021 - November 2024 (3 years and 10 months)
Paris, France
At Varenne Capital, I first analyzed financial data before designing the architecture that would centralize it. This dual role was crucial: understanding business needs from the inside before building.
The real challenge was the diversity of sources — CapitalIQ, Factset, Compustat, S3, and others — each with its own formats, inconsistencies, and specific logic. Some public data required scraping, while others still arrived via Excel files managed by VBA. Before writing a single line of architecture, it was necessary to identify the gaps, duplicates, and contradictions between providers.

The result: a unified PostgreSQL data warehouse — with Foreign Data Wrappers to query heterogeneous sources without moving everything — designed for financial analysis, which converges all these sources into a coherent and usable system.

Stack: PostgreSQL (Foreign Data Wrappers), Python, web scraping, VBA.
Data Modeling PostgreSQL Data analysis Datalake Datawarehouse
Freelance
Fullstack Developer
November 2019 - February 2020 (3 months)
Helped companies with Web data collection and product sheet creation via LateX.

Creation of dashboards in React and Express JS.

This experience was concurrent with my engineering studies.
React Node.js Express Web Scraping Python