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Dimitri GuittonDG

Dimitri Guitton

Symfony | Java Spring Boot backend web developer

€450/day
Fontenay-le-Comte, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Dimitri

Are you looking for a Symfony / Java Spring Boot backend developer to strengthen your team?
Do you want to design a high-performance and scalable web application?
You've come to the right place.

I am a backend developer with over 7 years of experience, specializing in Symfony and Java Spring Boot technologies.
I help companies create solid architectures, maintainable APIs, and custom solutions that meet complex business needs.

I have worked with SMEs, startups, and large groups on various projects:
– Design of SaaS applications and complex business tools
– Integration with existing systems (ERP, CRM, third-party APIs)
– Implementation of good practices: automated tests, documentation, CI/CD

I place great importance on transparency with my clients.
I provide regular monitoring of task progress to ensure smooth and efficient collaboration.

I can support you from A to Z in your backend projects:
– Analysis of your business needs
– Design and development of REST APIs
– Robust and scalable software architecture
– Integration with third-party systems (ERP, CRM, internal tools)
– Deployment, CI/CD, monitoring, and maintenance
– Redesign of existing applications or migration to Symfony / Spring Boot

Have a project in mind?
Contact me directly on the platform, I would be delighted to discuss it with you!
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Fontenay-le-Comte (up to 50km), Lyon (up to 50km), Paris (up to 50km), Toulouse (up to 50km), Bordeaux (up to 50km)

Experience

  • Echo Numeric
    SaaS MyTroupe
    ENTERTAINMENT AND LEISURE
    October 2024 - Today (1 year and 8 months)
    • All-in-one solution for artistic troupes (theater groups, improvisation groups, and other artistic collectives).
    • Administration of members, shows, rehearsals, venues, documents, finances, and communications.
    • Overview of activities for better coordination and internal communication.
    • Ticket management and performance analysis of shows.
    Symfony JavaScript PHP 8 SAAS
  • 37DEUX
    Creation of a SaaS
    SOFTWARE PUBLISHING
    June 2021 - February 2024 (2 years and 8 months)
    Les Sables-d'Olonne, France
    • Design and development of a revolutionary SaaS application to launch customized B2B web-apps.
    • Migration from Symfony 2 to Symfony 5.7, improving the flexibility and performance of the platform.
    • Creation of over 120 customized platforms for clients, integrated via API to logistics systems.
    • Increased accessibility and performance, demonstrating expertise in managing complex SaaS projects.
    Symfony JavaScript API SAAS PHP 7 MySQL
  • -
    Management and Simulation Application
    March 2025 - Today (1 year and 3 months)
    • Technologies used: Implementation of a backend in Java with Spring Boot for business rule management, security, and scalability, coupled with a frontend in NextJS for a modern, responsive, and optimized interface.
    • Main features: Fantasy sports web platform allowing users to virtually create and manage their racing team, respecting a fictitious budget and based on the actual performance of the drivers.
    • Project objectives: Offer a strategic and competitive experience, while exploring advanced concepts of web architecture, state management, and complex business logic.
    Java Spring boot Next.js React.js API

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Education

  • Licence Professionnelle Web et Mobile
    IUT Informatique La Rochelle
    2018

Certifications

  • OPQUAST "Mastery of quality in web projects"
    OPQUAST
    2018

Skill set

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