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Alexandre A.AA

Alexandre A.

React Developer

€450/day
Sainte-Suzanne, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Alexandre

React/Next.js (TypeScript) Developer — current position
I am evolving Simplonline, the Simplon.co promotion and student management platform. My goal: fast, accessible (WCAG 2.2) and easy-to-maintain interfaces thanks to a well-equipped design system (tokens, themes, Storybook).

What I deliver
  • Next.js (App Router) apps in strict TypeScript: SSR/SSG, reliable data-fetching.
  • Design system: component library, Storybook, Ant Design themes (dark mode, tokens).
  • Performance & SEO: Core Web Vitals optimization, images/fonts, markup.
  • Forms & data: React Hook Form + Zod, TanStack Query, lightweight state (Zustand/Context).
  • Quality: Vitest/Testing Library tests, Playwright E2E, standards (ESLint/Prettier).
How I can help you
  • Express front audit (perf/a11y/SEO) with prioritized action plan.
  • UI industrialization via design system.
  • Scoped and quickly delivered Next.js MVP.

**Portfolio**: alexdevlab.com — Let's discuss your needs.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Simplon.co
    Front-End Developer
    EDUCATION AND E-LEARNING
    August 2022 - Today (3 years and 10 months)
    Sainte-Suzanne, France
    I design and evolve Simplonline, Simplon.co's platform for managing training promotions and students (cohorts, registrations, progress tracking, evaluations, reporting). I ensure visual and technical quality with a structured design system.

    • Development of Next.js apps in strict TypeScript (routing, data fetching).
    • Design system: tokens, themes, component library; Storybook documentation.
    • Ant Design: theming (overrides/tokens, dark mode), custom components.
    • Accessibility (WCAG 2.2 AA): keyboard navigation, ARIA, focus, contrasts.
    • Data layer: TanStack Query, REST API integration, lightweight state (Zustand/Context).
    • Robust forms: React Hook Form + Zod.
    • Quality & security: Vitest/Testing Library and Playwright E2E tests, ESLint/Prettier, Conventional Commits.
    React.js Next.js TailwindCSS Typescript
  • Simplon.Prod
    Front-End Developer
    DIGITAL AND IT
    September 2018 - August 2022 (3 years and 11 months)
    Sainte-Suzanne, France
    Development of websites and web applications for companies & associations.
    • Integration of responsive interfaces from Figma mockups.
    • HTML integrations; Tailwind/SCSS for styling.
    • Accessibility (WCAG 2.1/2.2).
    • Front-end performance (responsive images, lazy loading, critical CSS).
    • Quality: code reviews, cross-browser tests.
    PHP JavaScript HTML5 TailwindCSS React.js

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Education

  • Bachelor CSI - Concepteur de systèmes d'information
    Ecole Supérieur du Numérique
    2020
    Système: Unix / Ligne de commande / Script shell Back-End: PHP / Laravel / Oracle Database Front-End: HTML5 / CSS3 / Javascript / jQuery / ReactJs Autres: RGPD / Notions de sécurité
  • Développeur Web et Web Mobile
    Simplon.co
    2019
    Font-End : HTML5 / CSS3 / Javascript / jQuery / ReactJs / Angular Back-End: NodeJs / ExpressJs / MySql

Skill set

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