Freelancer profile translated to English.

Description

Tech Lead Fullstack specialized in architecture and high-volume systems

I support companies in the design, reliability, and scaling of their applications, particularly on critical systems (APIs, data streams, payment).

My role: to secure your technical projects and build robust, performant, and maintainable architectures over time.

During my experiences (lead dev and freelance), I have:

Led complex projects and managed technical teams
Designed scalable backend architectures (Java / Spring, Kafka, microservices)
Developed high-performance APIs and web applications
Supported products from conception to production

Main Stack:

Backend: Java, Spring Boot, Kafka
Frontend: JavaScript (React, other frameworks)
Architecture: microservices, event-driven, APIs

What I can offer you:

Architecture design or redesign
Stabilization and improvement of existing systems
Technical lead / team support
Implementation of best practices (quality, performance, resilience)

Goal: to help you build reliable, scalable, and sustainable systems.

Available for high technical value missions.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Spanish
Conversational

Workplace preferences

Can work on-site

Lille (up to 50km)

ADEO
Senior Data Platform Developer
November 2025 - Today (9 months)
Intervention at ADEO on an internal platform for managing dataset access requests (Data Catalog / Data Finder type).

Development and evolution of a central tool allowing teams to discover, request, and use data hosted on GCP, with strong governance, traceability, and performance challenges.

Main achievements:

Backend design and development in Java (Spring Boot) within a hexagonal architecture
Implementation of asynchronous flows via Kafka for request processing and inter-service communication
Integration with GCP services for data management and access
Structuring of a reliable system for managing rights and validation workflows
Contribution to a maintainable, testable, and scalable architecture

Technical environment: Java, Spring Boot, Kafka, GCP, hexagonal architecture

Context: internal data platform with strong governance and scalability requirements.
Apache Kafka Java Hexagonal Architecture
DECATHLON
FullStack JS/JAVA Developer
April 2025 - October 2025 (6 months)
Intervention within a team responsible for large-scale payment orchestration.

Design and development of critical systems around the payment process, with strong challenges in reliability, performance, and scalability.

Main achievements:

Development of critical backend services in Java (Spring Boot) for payment flow management
Implementation of asynchronous architectures via Kafka and RabbitMQ, ensuring system resilience
Data modeling and optimization under PostgreSQL to ensure transaction consistency
Development of frontend components (Svelte, React), including payment widgets integrating Stripe and PayPal
Creation of an administration interface for centralized payment monitoring and management

Technical environment: Java, Spring Boot, Kafka, RabbitMQ, PostgreSQL, React, Svelte

Context: high-volume and high-criticality system requiring robustness and reliability.
Apache Kafka JavaScript Spring boot Frontend Development Svelte
Leroy Merlin
Lead Full Stack Developer
May 2023 - Today (3 years and 3 months)
Lille, France
Within several teams (Labelink, QRM, Geoproduct) at Leroy Merlin
My main tasks were:
- Development and deployment of electronic label synchronization across all LM stores in France and abroad.
- Lead developer on the QRM project, the tool for generating QR Codes and tracking QR Code scans in stores.
- Maintenance of the Geoprod API for locating products in stores.
- Training of new joiners, interns, and professionals in career transition.
- Participation in agile rituals (SCRUM).