Freelancer profile translated to English.

Description

Lead frontend developerwith 20 years of experience in designing complex web applications.

Specialized in **React**, **Angular**, and **UX**-driven development, with a strong full-stack background in Node.js (Nest, Express, etc.).

I support teams in designing **scalable frontend architectures**, improving **user experience**, and delivering robust applications.

Autonomous and product-oriented**, I also leverage **AI toolsto accelerate certain development phases, with the necessary hindsight and discernment to **ensure quality and maintainability**.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Toulouse (up to 15km)

Renault Ampere
Senior fullstack React
AUTOMOBILE
June 2023 - March 2026 (2 years and 9 months)
Toulouse, France
Development of data visualization interfaces for electric vehicles
Design and development of web interfaces for **visualizing and analyzing telemetry data from Renault electric vehicles**.

Creation of variousdata visualizationscreens: filterable tables, card lists, log visualization, and interactive charts to facilitate technical data analysis.

Also participated in the development of features to **push configurations to vehicles**, which embed these parameters and then return usable data in supervision tools.

Work on theergonomics and UX/UIof the interfaces to improve data readability and utilization by technical teams.
Typescript React.js Next.js TailwindCSS Playwright
Vitalis (Qualiwi)
Senior fullstack Angular / NestJS
CONSULTING AND AUDITS
May 2025 - March 2026 (10 months)
Toulouse, France
Development of a dynamic report generation module
Design and development of avisual report editorallowing the creation of custom reports from widgets placed via **drag & drop on an A4 grid**.

Users can compose their reports by adding various widgets (charts, texts, images, files), position them freely, manage their order via a **layer system**, and configure their appearance (styles, colors, borders, display options).

Each widget is connected to **datasets from survey results**, enabling automatic data visualization generation.

The module also includes a **page preview and PDF export of reports**.

Benefits:
Report creation without technical intervention
Significant time savings for producing analysis reports
Automatic report generation from survey data
Flexible and customizable page layout
Angular NestJs PrimeNG MongoDB AWS
Zem8
Fullstack Architect
CONSULTING AND AUDITS
March 2025 - June 2025 (3 months)
Toulouse, France
AI platform for lead scoring
Definition of the platform's technical architecture
Development of HubSpot, Gmail, and LinkedIn connectors
Design of a dynamic lead scoring engine
Integration of an AI model (Mistral) for interaction analysis
Optimization of the architecture and management of AI-related costs
Angular NestJs BullMQ intelligence artificielle MongoDB

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Baccalauréat Scientifique, option Sciences de l’ingénieur
Lycée Louis Rascol - Albi
2002
DUT Informatique, option Génie Logiciel
Université Paul Sabatier Toulouse III - Toulouse (31)
2004

Check out Romain's education

Romain Sanchez

Frontend Senior | React / Next / Angular | Nest

About Romain

Experience

Development of data visualization interfaces for electric vehicles

Development of a dynamic report generation module

AI platform for lead scoring

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