Freelancer profile translated to English.

Description

Senior Java Backend Developer / Architect with over 20 years of experience in the design, development, and maintenance of critical applications for large enterprise environments (telecoms, energy, industry, finance). I primarily work on Java / JEE systems, Spring, REST microservices, as well as distributed architectures requiring reliability, performance, and high scalability.

During my assignments, I contributed to technical design, backend development, performance optimization, data migration, and deployment industrialization (CI/CD, Docker, Kubernetes). I have solid experience in demanding production environments, including complex incident analysis, critical application stabilization, and continuous improvement of existing systems.

Accustomed to international projects and multi-team contexts, I combine strong operational technical expertise with a deep analytical capability of software architectures, allowing me to intervene quickly and effectively on strategic projects or those with high technical constraints.

Key Skills: Java, Spring, JEE, Microservices, REST API, SQL, Oracle, PostgreSQL, Docker, Kubernetes, CI/CD, backend architecture, application performance, distributed systems, optimization, and production stabilization.

Available for senior backend development, technical design, architecture modernization, and expert assignments on critical Java systems.

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

Ericsson
Developer
TELECOMMUNICATIONS
September 2020 - Today (5 years and 11 months)
Massy, France
⚫ Development in a Java, Javascript, Typescript, J2EE environment:
◦ Maintenance on a telecommunication equipment configuration software (UI and backend) for mobile telephony.
◦ Addition of new equipment, with adaptation of the UI (light client executed by a browser), modifications to the backend in line with the new UI, including modification of the REST API.
⚫ Traffic Control Project:
◦ Maintenance of a software component implementing 5G and 4G network protocols (hundreds of thousands of lines of code per component).
◦ Creation of new features: Creation of a query engine for interrogating data generated by the EMCA (Ericsson Multi-Core Architecture) architecture.
◦ Reverse engineering and documentation: use of Amazon Q to generate UML diagrams from the codebase.
⚫ Teams and work environment:
Team of 8 people, including a project manager and a team lead.
Communication and collaboration with different teams located in Poland and Sweden.
Technical environment: Java, Typescript, Javascript, Maven, XML, UML, CI/CD, Docker, Kubernetes, Amazon Q (Claude), C++.
UML Java Typescript Docker Kubernetes
Infopro-Digital-ETAI
Application Manager
AUTOMOBILE
May 2018 - August 2020 (2 years and 3 months)
Antony, France
⚫ Diagnostics and Development in a Java, MySQL environment:
• ◦ Bug diagnostics in a quotation software.
• ◦ Bug fixes in an application for content deployment and updates.
• ◦ Optimization of content update processes.
⚫ UML Project with Python, Java (Spring and Quartz), and MySQL:
• ◦ Optimization of an application content deployment process.
⚫ Load testing of a B2C application (for a wide customer base).
• ◦ Implementation of Gatling (Scala load testing tool and framework) and development of Scala scripts.
Java Python (Programming Language) Gatling Scala SQL
Engie
Java / J2ee Developer Designer
ENERGY AND UTILITIES
September 2017 - April 2018 (7 months)
Bagneux, France
⚫ Development:
• ◦ Anomaly diagnosis and fixes.
• ◦ Development of REST web services (microservices), examples of completed projects:
◦ ▪ Sending emails to a REST server offering mailing technology, following requests from a mobile application.
◦ ▪ Addition of QR Code (barcode) to residence certificates.
◦ ▪ Addition of new curves for users to track consumption.

Technical environment: Java / JEE, JBoss, Spring, Eclipse, SVN, REST and SOAP web services, Hibernate, SQL Server.
Java SQL Spring boot REST API