Freelancer profile translated to English.
Back to original languageAbout Sacha
React.js Frontend Developer | TypeScript
Are you looking for a developer specialized in React.js and TypeScript capable of designing, optimizing, and evolving your web applications?
→ What I do:
I help companies, startups, and freelancers build modern, high-performing, and reliable interfaces designed for both the user and the business.
I develop your application from scratch or intervene to optimize, make reliable, and modernize an existing solution.
→ Your current challenges:
- Inconsistent user experience on mobile or desktop
- Difficult-to-maintain code generating bugs and regressions
- Insufficient performance (SEO, speed, conversions)
- Risky deployments, frequent production incidents
- Payment issues on e-commerce and landing pages
→ My solutions:
- Fluid & responsive UX: reactive and accessible interfaces
- Robust code: reliability and maintainability with TypeScript
- Performance & SEO: optimized rendering via Next.js (SSR/SSG)
- Security: authentication (JWT, OAuth, Firebase)
- Integrations: payments (Stripe, PayPal), APIs, and admin dashboards
- Clear architecture: reusable components and rapid deliveries
→ Why collaborate together?
I distinguish myself through an approach centered on client value: clear communication, autonomy, respect for deadlines, and rigorous technical support.
My goal is to deliver durable, aesthetic, and high-performing interfaces that meet the real needs of your users while supporting your business objectives.
→ Let's discuss your project.
I usually respond within an hour and can offer a quick initial chat to frame your needs and estimate your project.
French
Native or bilingual
English
Fluent
Can work on-site
Toulon (up to 50km), Paris (up to 50km), Lyon (up to 50km), Nantes (up to 50km), Toulouse (up to 50km)
Experience
- SanchoReact.js & TypeScript DeveloperTECHFebruary 2025 - Today (1 year and 4 months)Toulon, France➜ Development of modern and high-performing web interfaces with React.js, Next.js, and TypeScript.➜ Responsive integration from Figma mockups with TailwindCSS and dynamic interactions.➜ Creation of 2 websites including a password generator and contact forms.➜ Development of Feedector, a Chrome extension for filtering LinkedIn's news feed to optimize networking.Stack: React.js · Next.js · TypeScript · JavaScript · TailwindCSS · Figma
- OpenClassroomsFrontend DeveloperTECHFebruary 2024 - November 2024 (9 months)Paris, France➜ Development of a responsive travel agency website in HTML & CSS.➜ Creation of a responsive restaurant application with animations in HTML & SASS.➜ Integration of a dashboard connected to an API for an interior designer's website.➜ Development of a responsive real estate rental application with React.js.➜ Design of a banking application with a client area, Redux for state management, and API integration.➜ Debugging of an event agency website in React.js.➜ SEO and accessibility optimization of a photographer's portfolio.➜ Project management using Agile & Scrum methodologies.Stack: HTML · CSS · SASS · JavaScript · React.js · Redux · API · SEO · Accessibility · Git
Recommendations
+2
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Education
- RNCP Level 5, Web DevelopmentOpenClassrooms2024RNCP Niveau 5, Développement d'interface Front End (React.js, Next.js, Typescript, Javascript, TailwindCSS, Shadcn)