Freelancer profile translated to English.

Description

Tech Lead Fullstack | TypeScript, NestJS, React | Refactoring, Performance & Mentoring

Fullstack developer specialized in **TypeScript (NestJS, Node.js, React)**, I help companies in the development, optimization, and reliability of their web applications.

With solid experience inclean code and software architecture(Hexagonal DDD, CQRS), I pay particular attention to code quality, technical debt management, and system performance.

I can help you through:

**Versatile fullstack profile**: backend, frontend, API integrations, debugging, CI/CD, etc...

**Refactoring & performance expertise**: latency reduction, query optimization, maintainability improvement.

**Technical leadership & mentoring**: training and supporting developers, rapid skill development for teams.

**Pragmatic approach**: deliver quickly without sacrificing quality, while maintaining a long-term vision.

I can intervene to improve the performance and quality of an existing application, handle critical refactorings, develop complex new features, or temporarily strengthen a tech team.

Languages

French
Native or bilingual
English
Fluent
Spanish
Basic

Workplace preferences

Can work on-site

Lyon (up to 50km), Paris (up to 10km), Marseille (up to 10km), Grenoble (up to 10km), Chambéry (up to 10km)

Documo
Project Creator
SOFTWARE PUBLISHING
March 2025 - September 2025 (6 months)
Lyon, France
For 6 months, I designed and developed Documo (www.documo.fr), a secure web platform for exchanging administrative documents between individuals and organizations. I managed the entire product and technical cycle: scoping, architecture, full-stack development, deployment, and operation.

Key decisions and stack:

*Modern web architecture(React/Next.js front, Node/TypeScript API) for rapid time-to-market and a **maintainable foundation**.

*DDD approachto structure the domain, isolate business rules, and **ensure scalability**.
End-to-end typed API via tRPC tosecure front/back contractsand accelerate development.
*Encrypted document storage+ fine-grained access control by roles.

*Automated CI/CD(Docker + GitHub Actions) and VPS deployment, with monitoring and backups.

I stopped the venture due to lack of funding, but the experience gave me solid practice in complete project management and digital product creation.
TypeScript React.js Next.js Prisma Domain Driven Design
Libeo
Fullstack TypeScript Tech Lead
BANKING AND INSURANCE
March 2021 - March 2023 (2 years)
Paris, France
I progressed from Fullstack Developer to Tech Lead, following two promotions.
I worked according to the roadmap's needs: backend (NestJS, Node), frontend (React), partner integration, refactoring, debugging, etc.

Key achievements:

*Refactoring:reorganization of 4 core domain entities → query latency divided by 10, 20% CPU saved, accelerated feature development. Took over an unreliable module and migrated an obsolete library.

*New feature:development and monitoring of the paid module, adapting existing functionalities. Monitored usage and validated user value with clear metrics. Built a PDF export and technically integrated a partner via their API.

*Management & mentoring:trained my team of 3 developers, leading to rapid skill development. Team with the highest velocity in the company. Trained 6+ developers (juniors and seniors).

*Quality & clean code:Hexagonal Domain-Driven Architecture, CQRS, strict code reviews (systematic tests, zero comments tolerated).
TypeScript NestJs React.js GraphQL API
PASDT
Developer
RAW MATERIALS INDUSTRY
October 2020 - April 2021 (6 months)
Lyon, France
Monitoring platform for industrial electrical installations.

Focused interventions on integrating new features. Worked in a constrained environment requiring rapid skill acquisition and particular attention tostabilityand **non-regression**.

Key achievements:
Implementation of a forecasting curve to prevent industrial incidents
Data cleaning to improve graph visualization and installation monitoring
Refactoring of certain modules
Mathematics Refactoring Clean Code