Description

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

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 20km)

PyColors (SaaS Platform)
Founder / Lead Engineer — PyColors
SOFTWARE PUBLISHING
January 2025 - Today (1 year and 5 months)
Paris, France
Designed 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
Node.js Next.js Typescript API SAAS
Sanofi
Fullstack Engineer — Accelerator Program
MEDICAL
May 2024 - August 2024 (3 months)
Paris, France
Worked 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
React.js Next.js Node.js Typescript Cypress
Sanctuaire
Senior Fullstack Engineer — AI Recruitment Platform
SOFTWARE PUBLISHING
August 2023 - February 2024 (6 months)
Paris, France
Worked 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
Next.js Typescript API MongoDB Node.js

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Bachelor's Degree
EFFICOM Paris
2019

Patrice P.

Lead Fullstack Engineer · Node.js · React · SaaS

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