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Yassine E.YE

Yassine E.

Fullstack Developer & QA Automation | TypeScript

€307/day
Paris, FR
0-2 years

Average response time: 1 hour

About Yassine

Hi, I'm Yassine. I’m a Full-Stack Web Developer and QA Automation Engineer, focused on building reliable, modern and scalable applications with TypeScript, Next.js, Node.js and automated testing tools like Cypress and Playwright.

I work across the entire web stack. On the frontend, I build clean, efficient and responsive interfaces with React, Next.js and Tailwind. On the backend, I design APIs and business logic using Node.js, Express, Python or PHP/Laravel. I pay particular attention to authentication flows, data consistency, performance and maintainability.

Quality and reliability are core to my workflow. I integrate automated tests (E2E, API and integration) into CI/CD pipelines using GitHub Actions and Docker to secure every deployment. This approach ensures that features are stable, tested and production-ready before they reach your users.

I’ve worked on SaaS products, internal tools and product-driven environments where clarity, communication and iterative delivery matter. I’m comfortable in dynamic teams, and I enjoy solving real technical challenges in a pragmatic, structured way.

If you need a developer who can deliver features end-to-end while improving test coverage, stability and long-term quality, I’d be happy to help you move your product forward.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Basic

Remote only
Primarily works remotely

Experience

  • Mosaïque
    Independent Lead Developer & Software Architect - SaaS Application mosaique.io
    TECH
    June 2025 - July 2025 (1 month)
    Strasbourg, France
    Full design and development of mosaique.io, a modern SaaS application for creating, managing, and analyzing QR codes, with a Stripe-first subscription system.

    💡 Key Features:

    Customizable QR code generation with advanced analytics (geolocation, device, user behavior)

    Stripe-powered subscription system with scheduled upgrades/downgrades

    Secure authentication (NextAuth.js), email verification, password reset

    Interactive analytics dashboard (Recharts, Nivo)

    Automation via cron jobs (subscription lifecycle & plan transitions)

    🔐 Advanced security: Redis rate limiting, Zod input validation, CSRF, Discord logging
    🚀 Deployment: Vercel (frontend + API), PostgreSQL (AWS RDS), Redis (Upstash), AWS S3, SMTP
    🛠️ Tech stack: Next.js 15, React 19, Tailwind CSS 4, TypeScript, Prisma ORM, Stripe, Redis, Nodemailer
    📊 Monitoring: Vercel Analytics, Stripe Dashboard, centralized backend logging
    💻 CI/CD & DevOps: Prisma migration automation, robust error/crash management
    Next.js Stripe Prisma Redis Logiciel en tant que Service (SaaS)
  • ALSADEM
    Lead Developer – alsadem.fr (Moving Company Website, Alsace)
    TRANSPORTATION
    May 2025 - June 2025 (1 month)
    Strasbourg, France
    Description:
    I was fully responsible for the end-to-end development and deployment of alsadem.fr, a professional website for a moving company based in Alsace, France.

    🔧 Tech Stack & Architecture

    Built from scratch with Next.js 14, TypeScript, and Tailwind CSS

    Integrated WordPress as a headless CMS for blog content

    Deployed on Heroku, with Cloudflare for DNS, CDN, and Full Strict SSL

    Implemented Progressive Web App (PWA) support with offline capabilities

    🎨 UI & UX

    Fully responsive design with a modern, lightweight UI

    Optimized for performance and accessibility

    📈 SEO & Analytics

    Applied advanced SEO techniques (meta tags, structured data, sitemaps)

    Set up Google Analytics and Google Search Console

    📬 Interactive Features

    Contact & quote request forms with real-time Zod validation

    Email notifications via Nodemailer

    Client-side form feedback and error handling

    🛡️ Privacy & Compliance (GDPR)

    Integrated Secure Privacy for cookie management

    Dynamic cookie consent banner and preferences panel

    Conditional loading of cookies (e.g., Google Analytics only after consent)

    🚀 My Role
    From design and coding to infrastructure and compliance, I led the project solo and delivered a secure, scalable, and user-friendly web application tailored to the client’s business needs.
    Développement full-stack (Next.js 14, TypeScript) Intégration CMS headless (WordPress) Déploiement & infrastructure (Heroku, Cloudflare, SSL) Optimisation SEO & performance Conformité RGPD (Secure Privacy, gestion des cookies)
  • Le Collectionist
    Quality Assurance Tester
    TRAVEL AND TOURISM
    October 2023 - September 2024 (11 months)
    Paris, France
    At Le Collectionist, I worked as a QA Tester within an Agile development team 🧪⚙️, contributing to the stability and quality of a high-traffic web application 🌍.

    Key Responsibilities:

    📝 Designed and executed comprehensive test plans

    🐛 Identified, documented, and tracked software anomalies

    👨‍💻👩‍💻 Collaborated closely with developers to verify fixes

    🤖 Developed and maintained automated regression tests using Cypress

    🔧📡 Built a Python-based interface with a REST API to optimize backend testing workflows

    🧑‍🏫 Participated in daily Scrum meetings to align QA with sprint goals

    🌀 Ensured seamless integration of QA processes into the Agile lifecycle
    Test Automation Python JavaScript

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Education

  • Bachelor's degree, Informatique
    CESI
    2024
    Bachelor's degree, Informatique
  • Brevet de technicien supérieur (BTS) - Services informatiques aux organisations option SLAM, Informatique
    IFIDE SUP-FORMATION Alsace
    2021
    Brevet de technicien supérieur (BTS) - Services informatiques aux organisations option SLAM, Informatique

Skill set

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