Freelancer profile translated to English.
Back to original languageAbout Pierre
Lead Full-Stack Developer / Architect with over 10 years of experience in designing, modernizing, and optimizing applications. Specializing in PHP and scalable architectures. I work to secure systems, improve performance, and accelerate production deployment. Expert in AI integration and DevOps, accustomed to 100% asynchronous remote work with distributed teams.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- ShareAgent · Plateforme immobilière IA · FreelanceCo-founder - CTOJanuary 2024 - Today (2 years and 5 months)• Design and full development of a real estate search platform using AI to analyze user criteria in natural language and automatically match properties• Robust architecture with circuit breaker, exponential backoff retry, and rate limiting for external API integration• Implementation of a scoring system with 50+ weighted criteria and configurable matching strategies• Full cloud deployment on Digital Ocean: App Platform, managed PostgreSQL, S3 storage (Spaces), asynchronous workers• Asynchronous processing via Symfony Messenger (real-time webhooks, notifications, parallelized AI extraction on multiple workers)• Performance optimizations: GIN indexing on JSONB columns, 10x reduction in AI extraction timeStack: Symfony 7.3, PHP 8.4, PostgreSQL/JSONB, OpenAI API, Stimulus/Tailwind, Digital Ocean
- AE3 · Client SaaS (outil comptable)Lead Full-Stack DevJanuary 2024 - Today (2 years and 5 months)Paris, France• Complete autonomous takeover of a multi-tenant Next.js application managing social declarations for accounting firms, companies, and social institutions• Multi-database architecture: MySQL, IframeScale, SQL Server (collective agreements), SIRENE database via Prisma with 3 distinct schemas• Implementation of Azure cloud integrations: Blob Storage (PDF generation/storage), Azure Functions (reporting synchronization)• Development of complex business logic: French social contribution calculations, DSN file parsing, automated generation of payment slips• Third-party integrations: Auth0 (multi-tenant authentication), SendGrid (notifications), Sentry (monitoring), Net-entreprises and Sottas APIs• Automated PDF generation via Puppeteer for regulatory slipsStack: Next.js 12, React, TypeScript, Node.js, Prisma (multi-schema), MySQL, SQL Server, Azure Blob Storage, Functions, App Service, Auth0,Docker
- Edunao / DixeoLead Dev (freelance)January 2021 - Today (5 years and 5 months)Paris, FranceArchitecture & Performance• PHP extension in C++ for calculating metrics on monthly views (clients with multi-million users)• Resolution of critical performance issues: DB indexing, profiling, O(n²) refactoring• Multi-tenant SaaS API: PostgreSQL RLS isolation, Redis Streams asynchronous jobs, Stripe billingMoodle Development• Creation of various plugins: blocks, themes, local, mod (AI tutor, course generation, supervision)• Generic and configurable data import system (format, mapping, validation)• Integrations: LTI 1.3, OAuth2, SAMLInfrastructure & Observability• Complete DigitalOcean infrastructure architecture• Monitoring stack: Prometheus, Grafana, supervision dashboards• CI/CD GitHub Actions, automated deployments• Mass version upgrades and patches on international fleetTechnical Leadership• Git workflows, code review, quality standards• Skill development of internal developers• Management of technical emergenciesStack: PHP 8.4, C++, Symfony 7.3, PostgreSQL, MySQL, Redis, FrankenPHP, Docker, Traefik, Prometheus, Grafana, GitHub Actions, DigitalOcean,Moodle 4.5
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Education
- Master 2 (M2)University of Lorraine2018Expertise statistique
- Master 2 (M2)University of Lorraine2017Génie informatique