Charles HILD LÊ · Toulouse, France
Architecture, backend, frontend, security, infrastructure: I design complete business platforms and ship them to production.
Experience in large groups
Defence, energy, space, aeronautics, AI research.
Organizations listed as experience references. Logos remain the property of their owners.
Expertise
The whole software chain, on systems actually shipped.
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Know-how: Idempotency, concurrency locks, workers, scheduled jobs, workflows and state machines.
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Know-how: PDF generation, electronic signature, field photo capture, technical SEO.
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Know-how: HttpOnly sessions and CSRF protection, AES-256-GCM encryption, rate limiting, server hardening.
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Know-how: Reproducible deployments, rollback by tag, monitoring, alerting and deduplicated pull-mode backups.
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Know-how: Online payment, ERP, electronic invoicing, calendars, transactional emails, and point-of-sale hardware.
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Know-how: Engineering degree in AI and robotics: ML, deep learning, reinforcement learning, NLP, explainability.
Artificial intelligence
AI is the second pillar of my work — never a replacement for engineering.
Engineer first. AI executes; I design, decide, review and prove.
I do not delegate my understanding: every change is reviewed, and I keep the final say.
AI takes on the repetitive execution: a usable version sooner.
Every change is reviewed, tested and checked. Nothing ships without approval.
Specs and documentation evolve with the code: your tool stays easy to pick up.
Work
Context, technical decisions, results.
Replacing a legacy tool with an in-house platform, built from scratch.
An internal web application for cataloguing and search, built from scratch by a team of seven whose architecture and code review I own.
13 interconnected apps: sales, workshop, rentals, invoicing and e-commerce
A complete information system for an SME: central API, e-commerce, ERP and point of sale, SSO and 6 business apps.
E-commerce API, storefront and back-office, with an ERP-driven catalogue
A 3-app headless e-commerce platform: ERP-driven catalogue, Mollie payments, legal invoicing and returns handling.
One identity, a second factor and central revocation across 9 applications
Self-hosted OIDC single sign-on for 9 applications: passkey or TOTP MFA, server-side tokens and migration with no lost access.
Dolibarr 22 with 8 custom modules, a connected POS and e-invoicing
Dolibarr 22 ERP with 8 custom modules: hardware-connected point of sale, offline inventory and a 4× faster product list.
One backend for the workshop, rentals, sales, invoicing and bank reconciliation
Central Node.js API: ~250 endpoints, 44 data models, quotes signed online, idempotent invoicing and server-side OIDC SSO.
Engineer first: AI executes; I design, decide, review and prove.
Versioned specs, skills and multi-agent browser testing: an AI pipeline under engineering control, with over 800 test cases run.
Method
Understand, scope, ship in steps, prove, maintain.
I listen to your constraints and pain points before talking technology.
A clear specification and a detailed quote: what, when, how much.
Regular releases you test, so adjustments happen early.
Testing, acceptance, a supervised release, data migration if needed.
Monitoring, backups and new features: your tool keeps serving you.
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