Freelance product engineer and AI creative based in France. I have spent three years taking mobile and SaaS products from scope to production, co-founded three startups, shipped four live apps, and delivered more than ten client projects. Alongside product engineering, I work hands-on with generative AI for image and video creation, prompt direction, iteration and quality control. My brother runs an AI content-generation studio, which gives me close exposure to professional creative workflows, while my own applications and deliverables remain my responsibility. I combine product thinking, visual judgment and reliable async delivery, and I am comfortable adapting work quickly from clear creative feedback.

Léo Berthet

Freelance product engineer and AI creative based in France. I have spent three years taking mobile and SaaS products from scope to production, co-founded three startups, shipped four live apps, and delivered more than ten client projects. Alongside product engineering, I work hands-on with generative AI for image and video creation, prompt direction, iteration and quality control. My brother runs an AI content-generation studio, which gives me close exposure to professional creative workflows, while my own applications and deliverables remain my responsibility. I combine product thinking, visual judgment and reliable async delivery, and I am comfortable adapting work quickly from clear creative feedback.

Available to hire

Freelance product engineer and AI creative based in France. I have spent three years taking mobile and SaaS products from scope to production, co-founded three startups, shipped four live apps, and delivered more than ten client projects. Alongside product engineering, I work hands-on with generative AI for image and video creation, prompt direction, iteration and quality control. My brother runs an AI content-generation studio, which gives me close exposure to professional creative workflows, while my own applications and deliverables remain my responsibility. I combine product thinking, visual judgment and reliable async delivery, and I am comfortable adapting work quickly from clear creative feedback.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
Beginner
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Language

French
Fluent
English
Advanced

Work Experience

CTO (Product & Mobile) / Freelance - International wedding marketplace at Unnamed company
October 1, 2025 - March 31, 2026
Co-founder/Product & Mobile CTO for a Stripe/OpenAI/Mistral-based platform integrating OCR and real-time capabilities. Delivered mobile and product work with strong engineering ownership while supporting international delivery.
Freelance Product Engineer (Mobile, SaaS and applied AI) at Self-employed
October 1, 2025 - Present
Takes a product idea and ships it to production on the app stores, from scoping to delivery. Works fully remotely/internationally. Builds and ships Flutter/Dart, React Native, Supabase/PostgreSQL, Stripe, and AI workflows (LLMs, RAG, Vision/OCR). Integrates payments, real-time features, video, and OCR. Ships deterministic mobile engineering and structured AI outputs with semantic search. Runs model evaluation continuously to keep what serves the product.
Co-founder & Product Engineer (Fitness tracking mobile app) at Unnamed startup
September 1, 2025 - March 1, 2026
Built and shipped a fitness tracking mobile app with Flutter/Dart and relevant backend services. Delivered multiple apps to production and worked with a shipping-first process.
Co-founder (e-commerce & growth) / Product (Meta Ads, automation) at BeeFit (as stated)
November 1, 2023 - December 31, 2024
Co-founded an e-commerce & growth project driving D2C brand acquisition. Product owned end-to-end (strategy to test-to-flight), shipping AI-driven automation and app-related deterministic engineering for device execution.
Co-founder & Product Engineer (OpenAI Vision / OCR product studio) at Aurinon / Product studio (as stated)
March 1, 2023 - December 31, 2023
Co-founded and built products using OpenAI, AI vision, and production-minded engineering. Worked on client MVPs and SaaS products, delivering from early product scoping through shipping.
Co-founder (Mobile + SaaS engineering work) at Unnamed startups (multiple)
January 1, 2023 - December 31, 2024
Worked across three co-founded startups with products live today. Delivered 10+ client projects, shipped 4 apps to production, and maintained strong engineering ownership and shipping cadence.

Education

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Qualifications

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Industry Experience

Software & Internet, Computers & Electronics, Professional Services, Media & Entertainment, Financial Services