Freelancer profile translated to English.

Description

Java Developer | Spring Boot | Software & Microservices Architecture

Do you have adifficult-to-maintain legacy APIor an architecture that can no longer keep up with your product's growth? I can help you **modernize your applications**, structure your technical choices, and establish a solid foundation for your teams.

I am aJava developer specializing in Spring Bootwith expertise insoftware and microservices architecture**. I am involved in both **technical designand **concrete implementation**, with a results-oriented approach.

Clean, stable, maintainable deliverables. I also support executives and technical managers through aCTO as a Serviceoffering, to help them make the right technological decisions without multiplying risks.

In recent years, I have worked withstartups and SMEson strategic projects: complete refactoring of legacy APIs to restore performance and stability, upgrading Java and Spring Boot versions in critical environments, industrializing complete stacks with **Docker**, and implementing CI/CD pipelines to streamline the delivery cycle.

My approach is **turnkey**: audit of the existing system, proposal of a suitable architecture, implementation of best practices, knowledge transfer to teams. The objective is simple: a technical foundation that accelerates your product, instead of hindering it.

I primarily work with **Java**, **Spring Boot**, **Docker**, Git, CI/CD, SQL and NoSQL databases.

If you are looking for aJava and Spring Boot expertcapable of handling atechnical refactoringormicroservices architectureand acting asCTO as a Serviceaccording to your needs, let's discuss it.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km), Nantes (up to 50km), Bordeaux (up to 50km), Lyon (up to 50km), Marseille (up to 50km)

Your Link
Java Developer | Spring Boot | CTO
CIVIL ENGINEERING
January 2025 - Today (1 year and 5 months)
Metz, France
→ Mission Objective:
Develop a custom business CRM to optimize the management of quotes for a turnkey renovation startup.

→ Achievements:

Creation of a robust Java backend with REST API, improving the performance of business processes and the reliability of data exchange. Creation of the frontend in React (Vite) with responsive UI, dynamic forms, and REST integration.

Integration of an AI dedicated to the analysis of historical quotes, significantly accelerating the generation of personalized quotes (time saving + intelligent automation).

Implementation of a CI/CD pipeline via GitHub Actions for automatic deployment on Clever Cloud, ensuring continuous delivery and increased perceived quality.

Integration of third-party services: YouSign, Google Maps, Qonto, ...

Added Value:
Complete digitalization of the business management for renovation brokers
Improvement of field productivity through automation (signatures, emails, documents)
Ability to quickly deliver functional iterations thanks to a modular architecture

→ Technical Stack:
Java, Spring Boot, React.js, PostgreSQL, REST API, GitHub Actions, Clever Cloud
Java Spring Boot CTO PostgreSQL React.js
CFL - Société Nationale des Chemins de Fer Luxembourgeois
Java Developer | Quarkus
HUMAN RESOURCES
September 2023 - Today (2 years and 9 months)
Luxembourg, Luxembourg
→ Mission Objective:
Complete migration and modernization of the Java application foundation for CFL's HR team, with refactoring of the CI/CD infrastructure and integration of new monitoring tools.

→ Achievements:

Refactoring of existing applications in Java 21 with integration into an Azure DevOps CI/CD pipeline, including automated tests, technical documentation, and deployment under Linux to ensure reliable deliveries.

Development and exposure of new REST APIs via Quarkus and Kong API Management, to improve system interoperability and maintainability.

Implementation of automated tests and integration of good software quality practices

Addition of monitoring and alerting via native tools, improving platform visibility, responsiveness, and perceived quality.

Added Value:
Stabilization of critical HR tools in production
Reduction of delivery times thanks to continuous integration
Improvement of code maintainability and responsiveness to business changes

→ Technical Stack:
Java 21, Quarkus, React.js, REST API, Azure DevOps, Kong, Linux RHEL.
Java Quarkus Microsoft Azure Azure DevOps React.js
DILI - Mipih
Java Developer | Spring Boot
HEALTH AND WELLNESS
November 2022 - December 2022 (1 month)
Toulouse, France
→ Mission Objective:
Assist the client in the strategic choice of a full-stack Java framework for a REST architecture.

→ Achievements:

Technical audit conducted on-site to assess the existing ecosystem and identify backend Java needs (REST API).

Recommendation of an optimized stack with Quarkus, ensuring system performance, maintainability, and scalability.

→ Technical Stack:
Java, SpringBoot, Quarkus, REST API
Java Spring Boot Quarkus Spring Batch Spring Security