Jonathan Fidi, CTO - Business Applications, SaaS & AI - High ROI

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Description

Most companies build applications. Very few build real strategic assets.

I step in when your application becomes critical for your growth, operations, or decision-making.

CTO / software architect — 20+ years of experience with high-stakes systems.

Experience on very large-scale platforms (Hermès, SNCF Connect, Criteo, Serena Capital…).

🎯 Focus

• structuring critical business systems

• designing scalable SaaS platforms

• integrating AI with real impact

• reducing complexity and accelerating product development

⚡ Impact

• faster decisions

• streamlined operations

• concrete automations

• unblocked teams

• technology-driven growth

🚀 Example

European Investment Fund

Internal AI Assistant connected to data

→ instant access to strategic information

→ massive time savings

🤝 Collaboration

• full remote asynchronous

• fixed fee

• targeted high-value interventions

• limited number of missions

I work with leaders and teams for whom the application is a strategic lever, not just a tool.

If your need is purely executive, this is probably not the right fit.

However, if you are looking to structure a critical system or to reach a new level, we can work together.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km), Nice (up to 50km), Nantes (up to 50km), Marseille (up to 50km), Bordeaux (up to 50km)

Hermès International
Hermès Paris
LUXURY GOODS
October 2023 - March 2024 (5 months)
Paris, France
International E-commerce · critical system

Intervention on a high-stakes international e-commerce system.

Context
Complex product requiring consistency, maintainability, and scalability.

Intervention
Structuring the frontend + implementing 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
Intermarché
High-Traffic E-commerce
AGRICULTURE
August 2021 - December 2022 (1 year and 4 months)
Paris, France
Very High Traffic E-commerce

Contribution to a platform used by millions of users.

Context
Performance and large-scale stability challenges.

Intervention
Continuous optimization + product evolution.

Impact
• enhanced stability
• improved performance
• optimized user experience
Next.js React.js Typescript CSS3

Check out Jonathan's experience

S

Serena

SERENA CAPITAL

Reviewed on 6/26/2023

S

Serena

SERENA CAPITAL

Reviewed on 6/26/2023

Show all 13 reviews

MM

SB

NR

+5

Mathieu Marchois and 7 other people have recommended Jonathan

A

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

B

Baptiste Duhen

Fullstack developer

4.6

(4)

5

A

Amed Hamou

Senior Lead Developer

4

(2)

7

A

Audrey Champion

Web developer

4.3

(3)

4

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