Interfaces & frontend
I design interfaces and build responsive web applications, from public websites to dashboards and SaaS products.
- Astro
- React
- TypeScript
- Cloudflare
- D1
- R2
Stan Leon
Independent software engineer & product builder · France
15 years building products,
from interface to infrastructure.
I design, develop and run web, mobile and desktop applications. UI, frontend, backend, databases and deployment: I take products from the first idea to production, then maintain and evolve them.
Selected work
9 public products
- macOS
Cocon
Rain, storms, snow and a crackling fire, laid over your Mac desktop.
- iOS
Football Tactics
An iOS tactics board for football coaches and their teams.
- Web
EventCompletion
Shareable progress pages for events, countdowns and long-term goals.
- Web
PROGRAM
One page per client, one link to share a personalised fitness program.
- iOS
Homebit
A cosy voxel decorating game: build tiny rooms and bring every corner to life.
- Web
- Slack
Bravo
Meaningful team recognition, on the web and directly inside Slack.
- iOS
Narrafit
Story-driven fitness that turns every workout into an adventure.
- Web
Plot
An infinite shared plane: claim a sector and fill it with anything.
- Gmail
- Slack
Send to Slack
Send the Gmail you are reading, with its attachments, to a Slack channel as yourself.
Expertise
Mobile & desktop
I build iOS and macOS apps, with local data, cloud sync and in-app purchases, through to App Store release.
- SwiftUI
- SwiftData
- CloudKit
- PencilKit
- StoreKit
Backend & databases
I build APIs, structure databases and connect services: authentication, payments, OAuth, webhooks and third-party integrations.
- APIs
- SQL
- OAuth
- Webhooks
- Payments
Infrastructure & operations
I deploy and operate the products I build, handling hosting, delivery pipelines, monitoring and production troubleshooting.
- DevOps
- CI / CD
- Monitoring
- Cloudflare
Latest writing
All posts →About
15 years of hands-on experience.
For 15 years, I’ve worked across software development, interface design and production infrastructure. I can take ownership of a complete product or work on a specific part of an existing system. I design, build and operate the products shown here myself.
15 years of experience
Across design, development and production operations.
One technical point of contact
From the interface to the database and infrastructure.
Products I run myself
I design, build and operate the projects shown here.
Let’s move your project forward.
Launching a product, improving an application or solving a technical problem? Tell me what you’re working on.
Send me an email