Freelancer profile translated to English.
Back to original languageAbout Julien
Senior Java / PHP developer, I assist SMEs in the design, modernization, and maintenance of custom business software.
I intervene when existing tools are no longer sufficient: scattered Excel files, aging applications, lack of data reliability, need for automation or integration between tools.
I work on the entire application lifecycle
- Analysis and formalization of needs
- Development of custom business applications
- Modernization and redevelopment of existing applications
- API integration (ERP, CRM, payments, logistics, accounting, third-party services)
- Synchronization and interconnection between existing tools
- Maintenance, support, and continuous evolution
- Technical audit / code audit
- Hosting and monitoring if necessary
Examples of topics I work on
- Redevelopment and modernization of a critical business application that has become difficult to maintain
- Development of custom internal tools to replace Excel files and centralize data
- Integration between business applications, ERP, CRM, and third-party services via API
- Improvement of performance and reliability of existing applications
- Technical audit and restructuring of application projects
My added value
- Understanding of business challenges
- Case-by-case approach
- Clear communication, adapted for non-technical people
- Commitment to code quality and solution longevity
- Maintenance and scalability ensured
Technologies
- Backend: Java / Spring Boot, PHP / Symfony
- Frontend: React, Typescript
- Databases: PostgreSQL, MySQL, MariaDB
- Integrations: REST APIs, webhooks, data synchronization, system interfacing
- DevOps: Docker, CI/CD, cloud hosting (AWS or other)
Let's work together
I can start with a discussion to understand your needs.
You will leave with a clear vision of the solution, feasibility, and necessary budget.
French
Native or bilingual
English
Conversational
Can work on-site
Reims (up to 20km)
Experience
- IT SYSTEMESTypescript back-end developmentJune 2025 - December 2025 (6 months)Development of the back-end for a candidate/recruiter matching application in Typescript and Supabase database
- IT SYSTEMESPHP application maintenanceMay 2023 - June 2025 (2 years and 1 month)Migrations, fixes, and evolutions of a PHP production tracking application for accounting firms.
- ACDE ConseilPHP web application developmentDecember 2021 - May 2022 (5 months)Porting and extension of an ACCESS application for project management to a WEB application in PHP and Symfony.
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Education
- Professional Title Software DeveloperM2i Formation Paris2014