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Jérémy GaultierJG

Jérémy Gaultier

Expert Symfony | SaaS & Application Development

€450/day
Le Puy-en-Velay, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jérémy

Available for long-term assignments / SaaS projects / strategic redesign

🎯 What I do

I design and develop custom business applications and SaaS platforms used daily by your teams or your clients.

I am involved in both creation and redesign of existing systems.

💡 My expertise
🚀 SaaS Creation (subscription, payment, multi-tenant)
🔧 Complex Business Application Development
🔄 Migration / Redesign of legacy systems to modern Symfony
⚙️ Industrialization (CI/CD, automated testing, software quality)
📈 Performance and Scalability Optimization
🔐 Application Security
🧠 My approach

I don't just code.
👉 I get involved in your business challenges.

Clean Code, SOLID, DDD
Hexagonal Architecture / API-first
TDD, PHPUnit, Cypress
Maintainable and scalable code
👉 Result: a reliable, durable, and scalable product.

🏆 Key experiences
Doctolib-type SaaS (appointment management, Stripe payment)
IoT Platform (connected lockers)
Industrialization and refactoring for SNCF
Migration of legacy systems to modern Symfony
Development of high-performance and scalable APIs

🛠 Technical Stack
Backend: Symfony (2 → 7), PHP 8+
Front: Vue.js, Angular, React
Infra: Docker, AWS, CI/CD
Data: MySQL, ElasticSearch
Tests: PHPUnit, Behat, Cypress
  • French

    Native or bilingual

  • Spanish

    Conversational

  • English

    Fluent

Can work on-site
Le Puy-en-Velay (up to 50km), Paris (up to 50km), Montpellier (up to 50km), Lyon (up to 50km)

Experience

  • Novaway
    Symfony Sylius Developer
    DIGITAL AND IT
    October 2025 - Today (10 months)
    Lyon, France
    Maintenance and evolution on Sylius and Symfony application

    End clients:
    Point-S
    Denantes
    13Habitat

    Features:
    ERP import bug fix
    new customer journey
    ...
    Symfony Sylius
  • Freelance,
    Full Stack Symfony Developer
    January 2017 - Today (9 years and 7 months)
    Le Puy-en-Velay, France
    Freelance missions on a daily rate or fixed price basis for all types of clients (from large accounts (EDF, SNCF, BourseDirect, Axens, Descours et Cabaud startup de la Poste …) to small accounts (AgenceGW, EasyMandat, Bincall, GreenSysTech, Campus France …). On business applications, using agile methodology, with teams of three to five people generally.
  • Holitime
    Symfony Developer
    HEALTH AND WELLNESS
    March 2024 - September 2024 (6 months)
    Design and development of the back end for Holitime:
    Accounts
    Stripe payment
    Time slots
    Appointment management
    ...
    Symfony 7

Recommendations

XN
EB
Jonathan Van DammeJV
+3
Xavier Nicolas and 5 other people have recommended Jérémy

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Education

  • Tech Degree - Full Stack JavaScript
    TreeHouse
  • BAC +4 - Symfony Application Developer
    OpenClassRooms
    2018

Certifications

  • OROCOMMERCE FUNDAMENTAL TRAINING
    OROINC
    2019
  • OROCOMMERCE TECHNICAL TRAINING
    OROInc
    2019
    oro commerce

Skill set

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