Freelancer profile translated to English.
Back to original languageAbout Mehdi
Lead Frontend React / Next.js / TypeScript, I help product and tech teams quickly unblock their front-end topics on short missions: audit, refactoring, performance, design system, accessibility, testing, and delivery support.
I am particularly effective on assignments ranging from 3 to 30 days:
- Audit of a React / Next.js codebase with a prioritized action plan
- Targeted refactoring to make an application more maintainable
- Performance optimization: Core Web Vitals, Lighthouse, bundle, rendering, cache
- Setup or improvement of a design system with Storybook
- Development of a critical feature as senior support
- Setup of front-end tests: Vitest, React Testing Library, Cypress / Playwright
- Team coaching: frontend architecture, code reviews, TypeScript best practices
What you get:
- A clear diagnosis of problems and priorities
- Typed, clean, tested, and maintainable code
- Deliverables usable by your team after the mission
- Direct communication, with regular progress updates
I have over 10 years of front-end experience, with missions at SNCF Connect, Beta Gouv / DINUM, and Euler Hermes.
My core expertise:
React.js, Next.js, TypeScript, Storybook, Design System, TanStack Query, Redux, web performance, accessibility, and front-end quality.
Available for short audits, refactoring, or React / Next.js support, remotely or in Paris.
Portfolio: daikozi.com
English
Native or bilingual
French
Native or bilingual
Can work on-site
Paris (up to 50km), Bordeaux (up to 50km), Lyon (up to 50km), Lille (up to 50km), Marseille (up to 50km)
Experience
- Beta Gouv - DINUMFront-End EngineerPUBLIC SECTOROctober 2024 - Today (1 year and 8 months)Paris, FranceObjective:Intervene on high-stakes front-end topics in a demanding environment, with constraints on quality, maintainability, performance, and collaboration between product, design, and tech teams.Achievements:
- Development and improvement of front-end features in React / Next.js
- Contribution to code quality, maintainability, and component structuring
- Work on user experience, accessibility, and front-end performance
- Close collaboration with product, design, backend, and QA teams
- Participation in code reviews and frontend architecture decisions
- Delivery of robust, maintainable, and testable components and features
- SNCF Connect & TechSenior Front-End Developer ReactTRANSPORTATIONSeptember 2021 - September 2024 (3 years)Paris, FranceObjective:Strengthen a product team on a public sector web application, with concerns for quality, accessibility, maintainability, and continuous improvement.Achievements:
- Development of front-end features in React / TypeScript
- Improvement of frontend architecture and code maintainability
- Work on accessibility and the quality of the user experience
- Bug fixing, targeted refactoring, and improvement of existing components
- Collaboration with product, design, and backend teams
- Participation in technical choices and front-end best practices
- Euler HermesFront-End Developer React / TypeScriptBANKING AND INSURANCEJuly 2021 - August 2021 (2 months)Paris, FranceObjective:Participate in the development and improvement of web interfaces in a demanding business context, with needs for reliability, readability, and maintainability.Achievements:
- Development of front-end features in React / TypeScript
- Integration of maintainable and reusable user interfaces
- Improvement of existing components and bug fixing
- Collaboration with business, product, and backend teams
- Contribution to code quality and frontend best practices
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Education
- Engineer's degreeIFP School2012
- Engineering DegreeUniversity of Science and Technology 'Houari Boumediène'2008