Freelancer profile translated to English.
Back to original languageAbout Maximilien
Nice to meet you, I'm Maximilien.
Senior full-stack developer with over 10 years of experience, I design robust web and mobile platforms capable of handling long-term load, while integrating client and business needs.
Tech stack:
→ JS/TS Expert: React, React Native, Next.js, Node.js (Express, Nest.js)
→ Solid: Python (Django, FastAPI)
→ DevOps: Docker, Kubernetes, Terraform, GitLab CI/CD, AWS/GCP/Azure
I've delivered for demanding clients: AXA IM, Cartier, Richemont, VINCI Energies, Viaccess-Orca. Environments wheresecurity**, **scalability**, and **reliabilityare non-negotiable. I also support early-stage startups like KairosFire with their MVPs, from product vision to delivery. Or seed-stage companies like Bimedoc, helping them catch up on technical debt.
What I bring concretely:
- **Industrialization**: I designed shared technical foundations (React/React Native) allowing the same app to be deployed on Web, Mobile, TV, and Chromecast. The kind of architecture that saves months of development for each new white-label client.
- **Technical Debt**: I'm often called upon to fix projects that have grown too fast. At Bimedoc, I conducted a complete audit, refactored a Django/Angular stack, resolved N+1 query issues, and established a maintainable architecture. I leave the code in better shape than I found it.
- **Security**: Enterprise authentication systems (SSO, SAML, OAuth) for sectors that don't joke with compliance: banking, insurance, luxury. GDPR, ISO 27001.
- **Monitoring**: At VINCI Energies, I developed a dashboard centralizing the monitoring of thousands of servers. The kind of tool that allows ops teams to sleep at night.
I am proactive, I document, I communicate, and I integrate into any type of structure and team.
Available in the Paris region, hybrid or remote.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lille (up to 50km), Montpellier (up to 50km), Lyon (up to 50km), Rennes (up to 50km)
Experience
- BimedocSenior Fullstack DeveloperMEDICALJuly 2025 - January 2026 (6 months)Paris, FranceSupport mission aimed at resolving accumulated technical debt and laying the foundation for a sustainable architecture.Audit and refactoring of a Django / Angular application: identification of bottlenecks (pain points), resolution of SQL N+1 query issues, optimization of practices, and significant improvement of response times.Review of the application architecture to promote maintainability, code readability, and facilitate onboarding for future developers. Implementation of best practices and patterns adapted to the existing ecosystem.In parallel with this consolidation work, I assisted in the implementation of new business features in coordination with the product teams, ensuring delivery continuity despite the refactoring project.
- KairosSenior Fullstack DeveloperINTERNET OF THINGS (IOT)February 2025 - January 2026 (1 year)Paris, FranceSupport for an early-stage startup in the design and development of its MVP: an advertising performance analysis platform specifically designed for physical retail.Development of a React.js dashboard with Redux architecture for state management, enabling smooth handling of large data volumes and reliable synchronization between different analytical views.Interface offering advertisers and point-of-sale networks clear and actionable insights into their key indicators: conversion rate, ROI per campaign, performance by geographical area and by brand.Close collaboration with the founders to translate product vision into concrete features, prioritize development based on user feedback, and iterate quickly in a lean startup approach.
- VINCI ENERGIESSenior Fullstack DeveloperENERGY AND UTILITIESMay 2023 - April 2024 (11 months)Paris, FranceDesign and development of a centralized monitoring platform for the IT department, offering a unified view of the entire IT infrastructure; several thousand servers, network equipment, and domains, in internal and external environments.Front-end development in React.js with the creation of real-time dashboards, alert visualization, and administration interfaces. Design of the back-end API in Node.js / Express, including the development of parsing scripts for aggregating and normalizing data from multiple operational sources.Integration of a heterogeneous ecosystem of tools — Cortex, CheckMK, Kubernetes, among others — within a single interface, allowing operations teams to manage the infrastructure transversally and reactively.
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Education
- Bachelor in Web Development & Digital MarketingEEMI2015Conçue par des leaders de l’Internet, l’EEMI a pour vocation de former des collaborateurs performants, créatifs et immédiatement opérationnels. L’objectif est de donner aux étudiants une formation en adéquation permanente avec les besoins des entreprises et en prise directe avec le monde professionnel.