Hello, I'm
Vincent Chalnot
Staff Engineer — Full-Stack Systems · AI-Augmented Development
Software engineer with 15+ years delivering end-to-end products. I design systems, build the tools that make other engineers faster, and ship with a threat model in mind.
About
Software engineer with 15+ years architecting complex production systems. Proven track record delivering end-to-end products as sole developer — from system design and API architecture to infrastructure, CI/CD, and frontend. Expert in technical leadership without formal management: driving architecture decisions, raising engineering standards, and mentoring engineers across teams.
Deep practitioner of AI-assisted development: daily use of agent orchestration (MCP tooling, OpenCode), multi-model workflows on OpenRouter, and specification-first methodology. Author of 815k+ downloaded open-source packages.
Expertise
What I bring to the table
Languages & Frameworks
PHP/Symfony (10+ yrs), Rust, TypeScript, Go, C#
Architecture & Design
Domain-Driven Design, API Design, System Architecture, EAV Modelling, Event-Driven Systems
AI & Augmented Development
Agent Orchestration (MCP, OpenCode), Multi-model Workflows (OpenRouter), LLM Integration
DevOps & Infrastructure
Docker & Docker Compose, CI/CD Pipelines, Traefik, Linux, Self-hosted Infrastructure
Data & Integration
PostgreSQL, MySQL, Elasticsearch, Redis, ETL Pipelines, Binary Serialization
Security
Vulnerability Discovery & Disclosure, Encryption at Rest, Input Sanitisation, Network Protocol Analysis
Experience
Where I've made an impact
Senior R&D Developer / Technical Architect
2021 – 2025Quarks Pro, Lyon
Sole developer of a precision document-intelligence platform extracting structured data from Safety Data Sheets for 200+ enterprise clients including CAC40 companies in luxury, nuclear, and entertainment sectors.
- Architected a custom extraction engine combining regex, fuzzy matching, tabular layout detection, and probabilistic voting
- Built a self-growing evaluation corpus of 30,000+ test points — production failures automatically became ground truth
- Optimised Docker images by 88% (5GB → 600MB) via multi-stage builds
- Designed a rigorous LLM evaluation programme to assess neural approaches against the production rule-based system
Lead Developer
2013 – 2020Clever Age, Lyon
Led technical delivery for 20+ enterprise projects. Principal architect of Clever Data Manager (CDM), an open-source Symfony framework for complex data modelling deployed across 20+ production clients.
- Designed and built CDM framework using EAV architecture with arbitrary contextualisation axes
- Co-created ProcessBundle ETL library (51k+ Packagist downloads)
- Authored Sidus/EncryptionBundle — Doctrine ORM encryption layer with zero-downtime lazy migration
- Discovered and responsibly disclosed an RCE vulnerability in Akeneo PIM (2016)
- Led technical teams of 4–6 developers, mentored a junior to senior level in 12 months
Web Developer
2011 – 2012Elogys, Besançon
Developed Symfony-based management applications for GIS, chemical products, and EPF systems. Identified and systematically remediated SQL and XSS injection vulnerabilities in the in-house framework.
- Built a monthly billing pipeline for EPF du Doubs handling millions of euros per month
- Fixed the framework that was generating vulnerable queries, not individual instances
Projects
What I'm building
Keres — Abstract Strategy Game Platform
Full product ownership: Rust game engine with Negamax/alpha-beta pruning, Symfony backend with real-time push via Mercure, TypeScript/SVG frontend. Game-agnostic platform that could host any combinatorial game.
Open Source — 815k+ Downloads
Author of 30+ packages. sidus/doctrine-debug-bundle (427k downloads), SidusEAVModelBundle — EAV framework with arbitrary contextualisation axes, SidusEncryptionBundle — transparent Doctrine ORM encryption.
Self-Hosted Infrastructure
Production-grade homelab: 15+ containerized services, 16TB NAS, Authentik SSO, Traefik reverse proxy with automated SSL. Demonstrates real DevOps practice outside of work.
AI-Assisted Development Practice
Early adopter since mid-2023. Self-hosted agent infrastructure with two persistent OpenCode instances, Playwright MCP, Context7, SearXNG. Specification-first methodology with systematic code review.
Contact
Let's work together
I’m relocating to London and targeting Staff Engineer / Senior Staff Engineer roles in fintech or high-engineering-bar product companies. If you’re building something challenging and value engineers who think in systems rather than tickets, I’d love to hear from you.