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Jonathan FidiJF

Jonathan Fidi

CTO • Business Applications, SaaS & AI

€2,000/day
35 projects
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonathan

Since 2007, I have supported over 43 organizations, from independent entrepreneurs to international groups.

The companies I have worked for collectively represent over €350 billion in annual revenue and serve more than a billion people worldwide.

Among them: Hermès, TotalEnergies, SNCF Connect, Criteo, Edenred, Carrefour, Assurant, Indigo, Serena Capital, Shadow Santé, and La Centrale.

Most companies develop applications.

Very few build true strategic assets.

I intervene when your software becomes critical to your growth, operations, or decision-making.

🎯 Expertise

• Strategic Business Applications
• SaaS Platforms
• Artificial Intelligence & Automation
• Software Architecture
• Fractional CTO

⚡ Impact

• Reduction of operational costs
• Automation of business processes
• Acceleration of decision-making
• Simplification of complex systems
• Acceleration of product delivery

🚀 Examples

• European investment fund: AI assistant connected to internal data → instant access to strategic information.

• Shadow Santé: SaaS platform for climate & energy used by over 150 organizations across 800 sites.

🤝 Collaboration

• Full remote asynchronous
• Results-oriented fixed fee
• Targeted high-value interventions
• Limited number of simultaneous missions

I work with leaders for whom software is a strategic lever for growth, performance, or transformation.

If your need is solely to produce code, I am probably not the right person.

On the other hand, if you are looking to structure a critical system, accelerate a product, or transform a business through technology, we can work together.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Nice (up to 50km), Nantes (up to 50km), Marseille (up to 50km), Bordeaux (up to 50km)

Experience

  • Shadow Santé
    CTO • SaaS Health, Climate & Energy
    MEDICAL
    March 2024 - Today (2 years and 5 months)
    Paris, France
    Technical leadership of a SaaS platform dedicated to healthcare facilities. Steering architecture, delivery, and product strategy. Designing features related to carbon, energy, water, and waste. Over 150 organizations and 800 sites supported in France and Canada.
    CTO SAAS
  • Hermès International
    Hermès Paris
    LUXURY GOODS
    October 2023 - March 2024 (5 months)
    Paris, France
    International E-commerce · Critical System

    Intervention on an international e-commerce system with high stakes.

    Context
    Complex product requiring consistency, maintainability, and scalability.

    Intervention
    Frontend structuring + implementation of a design system.

    Impact
    • Product consistency at scale
    • Accelerated delivery
    • Solid foundation for product evolution
    React.js Typescript Design System
  • Indigo group
    International Parking Leader
    CIVIL ENGINEERING
    December 2022 - June 2023 (6 months)
    Paris, France
    International Booking Platform

    Intervention on a large-scale platform.

    Context
    Growing technical complexity, need for reliability.

    Intervention
    Frontend modernization + TypeScript migration.

    Impact
    • Enhanced reliability
    • Reduced complexity
    • Improved development speed
    React.js Typescript Vite.js Material UI Next.js

Reviews

5.0

Out of 13 ratings

S

Serena

SERENA CAPITAL

Reviewed on 6/26/2023

S

Serena

SERENA CAPITAL

Reviewed on 6/26/2023

Recommendations

Mathieu MarchoisMM
Sébastien BénardSB
Nail RadiNR
+5
Mathieu Marchois and 7 other people have recommended Jonathan

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Education

  • Multimedia Designer (major 2007)
    Ecole Supérieure des Arts Modernes Paris

Skill set

Categories