Frontend, backend, cloud and iOS. Delivered for GLS France and Bell Canada; founder of Railora, the train tracker used by several thousand travellers.
Available, remote or on site.
My own app, born on the trains home from Asia and built alone.
Where your train really is, in real time.
Live ·
Operators include
SwiftUI app and Cloudflare Workers backend that ingests live railway feeds.
A train running now, as Railora shows it.
One engineer across the whole stack, so your product moves forward without handoffs between specialists.
Frontend
Vue 3 B2B SaaS to WCAG AA at Bell; real-time AG Grid and GraphQL screens at Vasco.
Backend
Event-driven Java and Go microservices on AWS SQS/SNS, running in production at GLS France.
Cloud & DevOps
Terraform on AWS, GitLab CI/CD and Grafana at GLS; serverless Cloudflare backend for Railora.
Mobile
Railora: a SwiftUI app with Live Activities, designed and published solo. Flutter and React Native on personal projects.
AI
A Claude Code and Copilot plugin used by ~30 developers at GLS: release prep cut from 90 to 30-45 min.
Embedded, IoT & networks
Linux routers (firewall, VPN, routing) and MQTT sensors at Occitaline; ESP32 firmware in C on personal projects.
Own product · iOS app and serverless backend · since 2026
A consumer iOS app I designed and shipped alone, from market study to the App Store, with a serverless TypeScript backend on Cloudflare Workers that ingests timetables for 11 countries and real-time data from 8 networks. Several thousand people use it to follow their trains.
GLS France · 2024 – 2026 · two contracts
On a first contract I led the Vue 3 front end of the parcel-tracking web app GLS recipients use, 2.2 million visits a month according to GLS, and built the Go and Java PIN-code services. On a second one I built event-driven Java and Go microservices on AWS and the AI plugin for Claude Code and Copilot now used by about 30 GLS developers.
Bell Canada · Montreal · 2022 – 2024
Two years as a full-stack developer in Bell's Self-Service Center team, in Montreal and in English. I built the Vue 3 and TypeScript front end of the B2B SaaS that business clients use to manage employee plans, phones and expenses, and contributed to the Java Spring Boot microservices behind it. Accessibility was part of every feature.
Built to WCAG AA at Bell, GLS and Vasco.
RailoraFounder RemoteConsumer iOS app for live train tracking, "Flighty for trains". Born from a trip through Southeast Asia and an overland train journey home.
GLS FranceBackend Engineer + AI
France, full remoteLong-haul parcel logistics: event-driven Java and Go microservices on AWS, and AI adoption by the development teams.
VascoFrontend Developer Paris, remoteB2B fintech SaaS for private asset managers (Vue 3, GraphQL, Symfony).
InnoSelectFull-Stack Developer
Netherlands, remoteHR assessment SaaS that matches candidates to roles through competency and personality tests; took over an existing codebase as the sole developer.
GLS FranceLead Full-Stack Developer ToulouseParcel-tracking web app that lets GLS recipients track and change their deliveries; high traffic, 2.2M visits a month (client figure).
PomerleauFrontend Developer
MontrealQuébec construction company; custom GIS widget on ArcGIS for its teams.
Bell CanadaFull-Stack Developer MontrealSelf-Service Center, a microservices platform for B2B and B2C customers at Canada's largest telecom operator, in English; my main product was a B2B SaaS for business clients.
OccitalineFull-Stack Developer ToulouseCybersecurity-oriented industrial Linux switch-router for building management (GTB), which I worked on from A to Z, from specifications to client demos. Deployed at CNES, including the Ariane launch pads, and at the Stade de France.
Quentin demonstrated much more than technical skills. His professional conduct, involvement and collaboration were major assets for my team.
“He understands what he's capable of and shows it upfront, highly recommended!”
“Quentin was a joy to work with, highly skilled, precise and very good analytical skills! And above all a very nice person.”
“Quentin is very fast and efficient. He quickly grasped the nature of my problem and solved it in record time. I won't hesitate to work with Quentin again.”
“Fast, efficient and very friendly. I recommend him.”
“I was lucky to work with Quentin on a web project. Quentin is a real asset to a team and will adapt perfectly to different projects.”
Outside client work, I build my own projects, from ESP32 firmware and Raspberry Pi networking to iOS apps. Most start from a real problem at home or on the road.
2026
An iOS spaced-repetition app designed for adults with ADHD, with FSRS v5 scheduling and a home-screen widget.
2025
I wired the building intercom to relays driven by an ESP32 running a small HTTP server in C, behind a Go service and a WireGuard tunnel, so the door and garage open from my phone.
Read the case study: Remote door and gate opener Code on GitHub
2024
A Raspberry Pi 4 travel router that joins public Wi-Fi on one adapter, serves a hotspot on a second one and routes everything through a VPN, configured from a Vue 3 web UI.
2024
A web app for SNCF Max Jeune subscribers that finds the free TGV and Intercités routes sncf-connect hides, including short connections, shown as a list and on a map, from SNCF open data imported every morning.
2022
An air-quality sensor on an M5Stack (ESP32) reading PM2.5, temperature and humidity, with GPS position, sending its data over LoRa to a gateway (Epitech IoT project).
2022
ESP32 sensors around the flat post temperature readings to an API on a Raspberry Pi, which drives the heating, presence lighting and intercom notifications.
English is my everyday work language. I spent two years in English-speaking teams in Montreal, at Bell Canada and Pomerleau, and I have also worked as a freelancer from Boston.
In 2026 I spent four months in Southeast Asia, in Thailand, Laos and Vietnam, and then came home overland: from Hanoi to Paris by train, through China, Central Asia, Georgia and Turkey. Railora was born on those trains: I wanted to know where my train was, and no app did it well.
I answer every message within 24 hours.
contact@quentinaslan.com