Freelancer profile translated to English.
Back to original languageAbout Ismaël
Lead JavaScript developer specializing in React Native and Next.js, I help companies design and deliver reliable, performant, and well-thought-out web and mobile applications.
With over 4 years of freelance experience, I am involved in the entire development cycle: product scoping, architecture, development, deployment, and maintenance.
I have contributed to various projects (B2B SaaS, real-time mobile apps, internal tools), always with the same objective: to quickly deliver solid, maintainable, and useful solutions.
Looking for an autonomous, rigorous, and impact-oriented profile? Let's talk about your project
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- 4GENIUSLead Mobile Developer (React Native) — FleeSeptember 2025 - December 2025 (3 months)Development of Flee, a community mobile application to improve travel in Île-de-France by centralizing official information + real-time field reports.
- Product design + user journey (specs, prioritization, iterations).
- React Native mobile development: screens, navigation, forms, states, performance.
- Real-time features: creating/viewing reports, filters, geolocation, and maps.
- Integration of transport data and reconciliation with user feedback.
- Deployment: tests, bug fixes, optimization, publication, and monitoring (crashes/performance).
- 4GENIUSLead Fullstack Developer (Next.js / TypeScript) – B2B SaaSMay 2025 - May 2025Design and complete development of a B2B SaaS, specializing in business continuity management in case of absence.
- Fullstack Architecture: Next.js 14, TypeScript, Prisma, PostgreSQL, tRPC.
- API Integrations: OAuth and Webhooks connection with Google Calendar and Slack to synchronize schedules in real-time.
- Automation & AI: Implementation of Cron Jobs for daily workflows and use of OpenAI for intelligent content generation.
- Security: Access management, route protection, and sensitive data encryption.
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