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Matthias ChombartMC

Matthias Chombart

Back-End Java Developer | Spring Boot, Microservices

€480/day
Lille, FR
8-15 years

Average response time: 1 hour

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About Matthias

💻 Freelance Java developer with 8+ years of experience, I work on critical backend projects for companies like Decathlon, Adeo, Kiabi, and Interiale.

🔧 Specialist in Java & Spring Boot, I design robust, performant, and scalable solutions. My daily work involves: microservices development, Kafka stream management, workflow automation with Camunda, CI/CD, code quality, and smooth production deployment.

☁️ Exposed to Docker / Kubernetes and Google Cloud Platform environments, I easily integrate into modern distributed architectures. I have also contributed to the implementation of cloud-ready services in Agile contexts (Scrum, Kanban, XP).

🎯 My added value:

- Strong quality culture (testing, code review, refactoring)
- Ability to transform business challenges into concrete technical solutions
- Commitment to delivering clean, scalable, and maintainable code

📍 Available for new freelance backend Java missions, I am looking for projects with high technical or business impact, either remote or hybrid.

📩 Let's discuss your project! 🚀

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🧠Technical Skills

🔹Languages & Frameworks
Java (8 to 21), Spring Boot, Kafka, Maven, JPA, Hibernate

🔹Architecture & Back-End
Microservices, REST APIs, Camunda BPM, Modular Architecture

🔹Testing & Quality
JUnit, Cucumber, Gherkin, Unit Tests, TDD, Code review, Pair programming

🔹Databases
PostgreSQL, MongoDB, SQL Server, SQL

🔹Cloud & Containerization
Docker, Kubernetes, Google Cloud Platform (GCP)

🔹CI/CD & Tools
GitHub, GitLab, GitLab CI, Jenkins, IntelliJ, Eclipse, Postman

🔹Methodologies
Agile (Scrum, Kanban, XP), Code Review, Technical Documentation, Dojos & Katas

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💬Soft Skills & Professional Qualities

Autonomy – Adaptability – Team Spirit – Rigor – Analytical Skills
Communication with business stakeholders – Product Sense – Proactive
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lille (up to 15km), Dunkerque (up to 30km)

Experience

  • ADEO
    Back End Developer
    April 2024 - Today (2 years and 2 months)
    Lezennes, France
    Integrated into the Delivery Availability Publisher (DAP) project, my role is to design and develop modules ensuring the management and visibility of real-time delivery options. This project is based on a modular architecture and event-driven flows, allowing for optimized delivery management and reliable data exchange. Achievements: ✔ Design and development of modules for managing delivery times and eligibility ✔ Implementation and optimization of automated tests with Cucumber and Gherkin ✔ Integration with MongoDB for data persistence ✔ Production deployment and performance monitoring
  • Decathlon
    Back-end Developer
    January 2021 - March 2024 (3 years and 2 months)
    Croix, France
    I joined the Platform Ecommerce Connector (PEC) team to develop and maintain a platform connecting Decathlon with its WMS (Warehouse Management System) partners. This strategic project synchronizes orders and stock management in real-time, ensuring smoother logistics. Achievements: ✔ Development of microservices for order and stock flow management ✔ Participation in the design of a modular and robust architecture ✔ Development and execution of unit and integration tests to ensure code quality ✔ Performance optimization of services for better scalability ✔ Deployment and management of production releases via CI/CD
  • Youkado
    Back-end Developer
    September 2020 - November 2020 (2 months)
    Wasquehal, France
    Involved in a performance optimization project for an e-commerce platform to effectively manage load increases and improve service speed. Achievements: ✔ Optimization and refactoring of existing code ✔ Implementation of load testing with Gatling ✔ Bug fixing and response time improvement ✔ Technical documentation and improvement of best practices

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Education

  • Professional License, Development and Administration of the Internet and Intranet
    Lille University of Science and Technology
    2017
    Licence professionnelle, Développement et Administration de l'internet et de l'intranet
  • University Technology Diploma (DUT), Computer Science
    Lille University of Science and Technology
    2016
    Diplôme universitaire de technologie (DUT), informatique

Skill set

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