À propos de Patrice
I help companies design and build scalable product systems.
Specialised in Node.js, APIs and SaaS architectures.
10+ years of experience across banking, telecom and high-scale platforms.
Senior Fullstack Engineer focused on reliability, performance and business impact.
I design and deliver production-grade applications, working with companies such as ING, Vodafone, TF1 and Sanofi.
🚀 Expertise
- Backend systems (Node.js, NestJS)
- API design (REST, WebSockets)
- SaaS architecture & scalability
- Data consistency & system reliability
- Performance optimisation
- Stack
Node.js · NestJS · React · Next.js · TypeScript · PostgreSQL
Monorepo (Nx, Turborepo) · CI/CD · Docker
🎯 What I deliver
- Build products from scratch
- Scale existing platforms
- Design backend architectures
- Improve performance & reliability
- Take ownership of critical systems
- Product mindset
Founder of PyColors (pycolors.io) — a SaaS platform and design system built with a production-grade architecture.
🤝 Availability
Available for Senior / Lead Fullstack & Backend missions (Node.js, SaaS)
Paris / Remote · Available quickly
Français
Bilingue ou natif
Anglais
Capacité professionnelle complète
Accepte de travailler sur site
Paris (jusqu’à 20 km)
Expériences
- PyColors (SaaS Platform)Founder / Lead Engineer — PyColorsEDITION DE LOGICIELSjanvier 2025 - Aujourd'hui (1 an et 5 mois)Paris, FranceDesigned and built a production-grade SaaS platform and design system, focused on helping developers ship applications faster.Defined and implemented a full-stack architecture using modern technologies, with a strong focus on scalability, maintainability and developer experience.Key contributions
- Designed full-stack architecture (Next.js, Node.js, Prisma)
- Built scalable backend systems and APIs
- Implemented authentication and billing systems
- Set up CI/CD pipelines and production workflows
- Developed a reusable design system and component library
- SanofiFullstack Engineer — Accelerator ProgramSECTEUR MÉDICALmai 2024 - août 2024 (3 mois)Paris, FranceWorked on large-scale web platforms within a multinational environment, contributing to the design and delivery of production-grade applications.Led the development of scalable front-end architectures (React, Next.js) while also contributing to backend services (Node.js), ensuring consistency and performance across multiple applications.Contributed to multisite platforms with a strong focus on scalability, maintainability and performance, solving complex technical challenges related to architecture and system design.Delivered key projects, including US-facing platforms for Beyfortus (bronchiolitis vaccine), in a highly collaborative and English-speaking environment.Key contributions
- Designed and built reusable UI components and scalable frontend architecture
- Improved application performance and maintainability across multiple sites
- Contributed to backend logic and API integrations (Node.js)
- Implemented testing and quality workflows (Cypress, Storybook, CI/CD)
- Collaborated with cross-functional teams in an international context
- SanctuaireSenior Fullstack Engineer — AI Recruitment PlatformEDITION DE LOGICIELSaoût 2023 - février 2024 (6 mois)Paris, FranceWorked on a production-grade web application leveraging AI to transform recruitment processes, improving efficiency for both recruiters and candidates.Designed and delivered scalable systems across frontend and backend, with a strong focus on performance, real-time interactions and data consistency.Built and maintained APIs and services handling core business features such as user profiles, messaging, and real-time communication.Key contributions
- Designed backend architecture and scalable APIs (Node.js)
- Modelled core data structures (MongoDB) for complex business flows
- Implemented real-time features (chat, notifications)
- Optimised database performance (indexes, query optimisation)
- Ensured system scalability and reliability in cloud environments
Recommandations
Soyez le premier à recommander Patrice
Contribuez à la réussite de ce freelance en partageant votre expérience de collaboration avec lui.
Ces profils de freelance correspondent également à vos critères
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Formations
- Bachelor's DegreeEFFICOM Paris2019