A Notion style portrait of me

Romain Rousseau

Design Engineer for data-dense applications and design systems

I enjoy solving complex information problems in constrained spaces, building React interfaces and component libraries for professional tools.

I design and engineer products from concept to code, specializing in SaaS applications where data complexity meets space constraints. With a background in software engineering and Human-Machine Interactions, I work at the intersection of interaction design, frontend development (React/React Native) and design systems.


Featured Work

Widget System

Weenat Dashboard, early 2025

Users felt constrained by our plot dashboard. I designed a configurable dashboard giving users control to arrange, hide, and configure their own views.

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Experience

Front-end developer @Gigz

Jul 2026

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Oct 2026

Marketing platform helping event organisers communicate with and target their audience, and measure the results of their campaigns. While hired on the front end, I worked across the stack: I started the company's React/MUI design system, around 30 components built from the designer's mockups, and refactored the back-end data model to unify contact entities (NestJS, Forest Admin).

Design engineer @Weenat

Jan 2021

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Jun 2026

Agricultural technology company building sensors and a SaaS platform for farmers. I lead design of the web and mobile applications and was part of the frontend engineering team. Taking along the challenges of maintaining our design system and building features that handle complex agricultural context and data visualization.

Front-end developer @Miles

May 2020

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Nov 2020

Part of my internship at Miles, I led the development of AstroPlant's online platform—a citizen science project for space agriculture. Conducted user research, designed architecture, built frontend (Next.js) and backend (Strapi), deployed on Kubernetes.

Also worked on the Five Brothers Fat Website


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