Product Engineer · Full Stack Developer · AI Integration

Jean–Charles Barq

I help B2B teams turn complex business workflows into clear, reliable and maintainable web products.

— The right product is the one your team can maintain without you.

React / TypeScript · Node.js / NestJS · AI Integration

About

A Full Stack Developer and Product Engineer for over 6 years, I help companies design and build B2B web products, SaaS platforms and internal tools.

I get involved from the earliest stages of a project: understanding the business need, talking with users, clarifying user journeys, prototyping, technical decisions, development. My experience is mainly built on React, TypeScript, Next.js, React Native, Node.js and NestJS — and extends into mobile, UX and branding when the project calls for it.

Based in Marseille, I work remotely and travel occasionally across France for audit and scoping phases.

Services

From Business Need to Product

Understanding the need, talking with users, clarifying user journeys, prototyping — turning a business workflow into a product, with or without AI.

AI Feature Integration

Documentation search, business assistants, automation of repetitive tasks — integrated directly into your existing tools.

Full Stack Development

From design to production — custom web applications built with React/TypeScript, Node.js and NestJS.

Product Revamp & Improvement

Modernizing an existing product: ease of use, code quality, testing and maintainability.

Technologies & Skills

Technical Skills

ReactReact NativeNode.jsTypeScriptNext.jsNestJS

Soft Skills

Product-mindedUX-friendlyStartup-focusedCollaborativeProblem-solvingAutonomousCommunicationAgile mindsetAdaptabilityAttention to detailDeal with ambiguityFast-paced environmentInternational settings