Product thinking and technical depth

Design and development of web apps, mobile apps and marketing sites

Fifteen years of expertise, a single point of contact. Scoping, architecture, development, release: the whole technical chain held end to end.

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Services

SaaS & internal tools

Custom applications

Subscription platforms, business tools, back-offices. Architecture built to be handed over and maintained ten years from now.

Mobile

iOS and Android

One single codebase, shipped to both stores, wired to its own API.

Marketing sites

Quiet, fast presence

Light, indexable sites that are easy to keep up to date, with no over-engineering behind them.

Products

built and run first-hand

Client work

builds, migrations, rebuilds...

Technical approach

core stack, mobile, API, operations

Proven tools, chosen to last.

  • Web core

    PHP · Symfony · MySQL · Twig · Stimulus

    A powerful, well-established and durable foundation, backed by names like SensioLabs, JetBrains and Oracle.

  • Mobile

    React Native · TypeScript

    Real native apps, installed from the App Store and Google Play: notifications, camera, geolocation...

  • API & integrations

    REST API · OAuth · Stripe · webhooks

    Online payments, automated emails, connections to your business tools. Site and app run on the same API: one single source of truth.

  • Infrastructure & DevOps

    Git · Docker · CI/CD · serverless

    Containerisation, continuous integration, incremental deployments, horizontal scaling, reproducible environments.

  • Taking over existing code

    Audit · Symfony migration · technical debt reduction

    Legacy audit, version upgrades, progressive refactoring, regression tests, documentation.

  • AI, properly tooled

    Claude Code · agents · human review

    AI built into the workflow: faster prototyping, scoped generation, code reviewed and signed off with 15 years of experience.

Portrait of Jonathan Plantey

About

I have been building for the web since 2011. I spent ten years on a high-traffic online CMS — first as a developer, then lead developer, then at the helm of its complete rebuild on Symfony. I also spent two years teaching PHP and Symfony to adults retraining into development.

Since 2022 I have worked independently from Amiens, France. I build my own products and support software companies, SMEs and founders on theirs.

  • FR · EN Languages
  • BSC Bachelor's degree
  • GEEK Culture
  • HEALTHY Nutrition · strength training