Freelancer profile translated to English.

Description

- You have a critical Java application in production for years.

- The documentation is non-existent, the original team is gone, and every change is a risk.

- You need someone who knows how to get into a complex system, understand it quickly, and get it back on track.

This is exactly what I've been doing for 8 years.

Lead/Tech Lead Java with over 8 years of experience, I have worked for major companies (IBM, Airbus, CS GROUP) on large-scale projects in application modernization, evolutionary maintenance, and cloud migration.

My daily routine: taking over under-documented legacy applications, auditing the existing system, documenting data schemas, refactoring code, and outlining a realistic modernization roadmap.

My specialty 🔎

- Rescue of legacy projects

- Java 8+ / Spring Boot applications with accumulated technical debt

- Reverse engineering & documentation

- MongoDB database reverse engineering, module dependency mapping, architecture diagrams

- Cloud Migration — 4x Oracle Cloud Infrastructure (OCI) certified in 2025

- Implementation of best practices

- Tests, CI/CD, Docker, Kubernetes, code reviews

🚚 What my clients get:

An autonomous, quickly operational contributor who doesn't just deliver code but structures the project to survive after their departure.

Types of missions sought:

✅ Audit and rescue of legacy Java applications

✅ Reverse engineering and technical documentation

✅ Modernization / refactoring of MongoDB databases

✅ Cloud migration (OCI, containerization)

✅ Tech Lead reinforcement on a struggling project

✅ Implementation of architecture and best practices,

Industry field of expertise

Languages

English
Fluent
French
Native or bilingual

Workplace preferences

Can work on-site

Toulouse (up to 50km), Bordeaux (up to 50km), Montpellier (up to 50km), Paris (up to 50km), Lyon (up to 50km)

Klanik
Back-end Developer
CONSULTING AND AUDITS
April 2023 - December 2023 (9 months)
Toulouse, France
For CS Group

Responsible for TMA on 3 application areas in a team of 5 people (including myself). These applications concern the integrity verification of Flight Ops & Maintenance manuals content.

Tasks:
• Development and execution of unit tests
• Update and prioritization of framework evolutions
• Creation of POCs for an XML comparison tool (delta between 2 versions)
• Implementation of a CI/CD process for 5 projects
• Migration of 5 projects from Make to Maven
• Commercial presentation of a project with milestones and requested resources
Java XML/XSLT Maven Gitlab CI/CD Shell Script Make Unit tests
IBM France
Full Stack Developer
AVIATION AND AEROSPACE
June 2017 - Today (8 years and 11 months)
Toulouse, France
For Airbus from January 2022 to April 2023

Responsible for TMA on a Java 7 application. Responsible for migrating the application from client/server to a public cloud platform at Airbus.

Tasks:
• Feature development
• Development and execution of unit and non-regression tests (TNR)
• Criticality study of library evolutions and prioritization
• Creation of POCs for an XML comparison tool (delta between 2 versions)
• Implementation of a CI/CD process with TNR
• Migration of 5 projects from Make to Maven
• Testing on AWS
• Application server migration

For La Banque Postale from April 2021 to December 2021

Development and bug fixing on the national CRM for financial advisors at La Banque Postale within a team of 8 people.

Tasks:
• Development and execution of unit and non-regression tests (TNR)
• Development of features according to business rules

For Navblue from September 2017 to April 2021

Responsible for TMA on the ADOC suite (composed of 6 JAVA applications) for the electronic maintenance of flight operations and maintenance manuals (Flight Ops). Worked within a team of 6 people.

Tasks:
• Development and execution of unit and non-regression tests (TNR)
• Support and implementation of the production environment
• Level 3 support
• Work in crisis management with prioritization of issues
• Analysis and optimization of memory performance
• Migration from JAVA 6 to 8
• Back-end management of Linux servers
• Update and optimization of SQL scripts
• CI/CD pipeline optimization
Linux Java Oracle Hibernate JavaServer Faces PostgreSQL Jenkins Amazon Web Services Sonar JDBC Spring boot EJB Maven JSF API Postman PL/SQL Primefaces