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Jean-Charles Barq

Freelance Product Engineer

Jean–Charles Barq

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

React / TypeScript · Product-oriented frontend · Prototyping · Light backend

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Resume EN·CV FR·CV ES

Services

Product-focused Frontend

Elegant, responsive UIs with React & TypeScript — crafted to engage users and enhance your product experience.

End-to-End Product Development

From UX wireframes to production-ready apps — fullstack development tailored to your product vision. Includes blockchain integrations (certified by Alyra).

Mobile App Development

Native-like cross-platform apps with React Native — delivering seamless experiences on iOS and Android.

UX & Branding Support

Shape your product's identity — branding, design systems and UX/UI guidance for a cohesive and memorable experience.

Technologies & Skills

Technical Skills

ReactReact NativeNode.jsTypeScriptJavaScriptNext.jsNestJSSolidityHardhatMongoDBPostgreSQLAWSServerlessVercelGolang

Soft Skills

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

Languages

French — NativeEnglish — B2/C1Spanish — A2/B1

Recent Projects

Scaleway

Sept 2025 — Apr 2026

Scaleway logo
Technical owner of an internal tool centralizing hardware catalog, assembly manuals, commercial offers and asset tracking into a single interface. Feature-based architecture, requirements gathering, Figma prototyping and full implementation.
ReactReact Router v7TypeScriptTanStack QueryMaterial UIVitestZodFigma
Stockoss
Stockoss logo
SaaS platform for logistics and storage management. Frontend & Fullstack contributions.
ReactNext.jsReact NativeTypeScriptNestJSPostgreSQL
DGAC (Direction Générale de l'Aviation Civile) - DSNA-DTI
DGAC (Direction Générale de l'Aviation Civile) - DSNA-DTI logo
Internal application for Air Traffic Management.
JavascriptWeb ComponentsReactNode.jsGolang
Moodoow — White-label Sports App
Moodoow — White-label Sports App logo
White-label mobile application platform for sports clubs — powering apps like USM Sapiac, enhancing fan experience.
React NativeReactRedux ToolkitAWSServerlessMongoDB
QB3 - Blockchain Course project
QB3 - Blockchain Course project logo
Web3 project. Final capstone for Alyra's blockchain developer certification.
Next.jsSolidityHardhatWagmiRainbowKit
a-mate Sports
a-mate Sports logo
Indie hacker / solopreneur project
React NativeNestJSNext.jsTypeScriptPostgreSQL
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Ready to Work Together?

Let's discuss your project and bring your ideas to life.

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Jean-Charles Barq - Freelance Product Engineer