Who is Miguel Aroles?

Miguel Aroles is a Senior Fullstack & UX/UI Developer based in Geneva, Switzerland, with over 12 years of experience building high-stakes digital products across Geneva and Paris.

What does Miguel Aroles specialize in?

He specializes in fullstack web development — React and Next.js on the front end, Node.js, Python, Django and FastAPI on the back end — combined with a strong UX/UI design sensibility that takes products from wireframe to production.

Ourse (ourse.app) is a coaching platform that Miguel Aroles designed, built, shipped and runs on his own as founder and sole engineer. It pairs a React web dashboard for coaches with a React Native mobile app for clients, backed by 250+ Firebase Cloud Functions and Stripe payments, and is live in public beta.

Which companies has Miguel Aroles worked with?

He has built products for TotalEnergies (TOTSA), the European Broadcasting Union, Airbus and FIFA (CRM modernisation), Rolex consultants via Eukleia, the fintech b-sharpe, and cultural institutions including the Musée du quai Branly and the Centre Pompidou.

Is Miguel Aroles available for hire?

Yes. Miguel Aroles is open to senior fullstack and UX/UI roles as well as freelance work. He is based in Geneva, available remotely, and holds a Swiss C Permit.

What technologies does Miguel Aroles use?

React, Next.js, Angular, TypeScript, Node.js, Python, Django/FastAPI, PHP, GraphQL, Firebase, PostgreSQL, MongoDB, Redis and RabbitMQ, with cloud and DevOps on AWS, Azure, Docker, Kubernetes and Terraform, and testing via Vitest, Playwright and Jest.

What languages does Miguel Aroles speak?

French (native), English (C1–C2) and basic German (A1).

Where is Miguel Aroles based?

Geneva, Switzerland. He holds a Swiss C Permit and works across the French-speaking Swiss market and with international teams.

14 July 2026·1 min read

Real-time data, from trading floors to live sport

Real-timeWebSocketData vizUX

A lot of my work comes back to the same challenge: a firehose of live data, and a human who needs to make a decision from it right now. Two projects show the two ends of that spectrum.

Trading floors — TotalEnergies

At TOTSA I built a mission-critical reporting application for TotalEnergies' global oil and refined-products trading. The front end was React and TypeScript; the back end Django and FastAPI in Python, with real-time data flowing over WebSocket and Redis doing the caching and queueing. When your users are making strategic decisions at scale, latency and correctness aren't nice-to-haves — they're the whole product.

Live sport — European Broadcasting Union

At the EBU I designed and built a real-time sports-data proof of concept for football and the Olympics: processing live event streams, rendering intelligent dashboards, and feeding the data to an AI commentary generator. The stack was React and Node.js, with WebSocket, RabbitMQ, Redis and Socket.IO moving events around. I presented it directly to EBU leadership.

What carries across

Design for the glance. In both cases the person reading the screen has seconds, not minutes. Hierarchy and motion have to earn their place.
The pipeline is part of the UX. A dashboard is only as trustworthy as the freshness of the data behind it. Reliability upstream is what makes the interface believable.
Real-time is a system property, not a feature you bolt on. It touches the data model, the transport, the cache and the render path all at once.

The through-line — live data, made legible — is exactly what I bring to Ourse today.