Youssef is available for hire
Hire YoussefYoussef Meskini
Verified Expert in Engineering
React Developer
Rabat, Rabat-Salé-Kénitra, Morocco
Toptal member since August 8, 2022
Bio
Youssef is a dedicated full-stack developer specializing in developing Node.js and React applications using best practices. He's passionate about providing solutions for end users, learning and expanding his knowledge, and building high-quality software. Youssef is an expert in testing, including unit, integration, and end-to-end tests.
Portfolio
AMN Healthcare
React, REST, TypeScript, JavaScript, APIs, React Router, React Query, Python...
Gartner - Digital Markets Engineering - Capitalizable
React, Node.js, JavaScript, Next.js, Search Engine Optimization (SEO)...
Health Gateway - Virtual Hospital
Express.js, GraphQL, MongoDB, Amazon Web Services (AWS), WhatsApp API...
Experience
- Redux - 6 years
- HTML - 6 years
- TypeScript - 6 years
- React - 6 years
- JavaScript - 6 years
- Node.js - 6 years
- CSS - 6 years
- Next.js - 6 years
Work Experience
Senior Full-stack Engineer
2024 - 2025
AMN Healthcare
- Implemented complex features in the current application with best practices in design (UI) and user experience.
- Improved the codebase of React front-ends with unit tests and E2E tests with Playwright.
- Created designs with best practices spacing and design tokens.
Technologies: React, REST, TypeScript, JavaScript, APIs, React Router, React Query, Python, Django, PostgreSQL, WebRTC
Full-stack JavaScript Engineer
2023 - 2024
Gartner - Digital Markets Engineering - Capitalizable
- Tracked page speed performance and improved the codebase to comply with the required SEO standards.
- Created and refined the tasks for each epic assigned to my team. Reviewed the deployment process and the code sent to production.
- Implemented high-standard features using Next.js and Tailwind with unit tests (React Testing Library) and E2E tests (Cypress).
Technologies: React, Node.js, JavaScript, Next.js, Search Engine Optimization (SEO), Tailwind CSS, Test-driven Development (TDD), Full-stack, CI/CD Pipelines
Senior Back-end Engineer
2022 - 2023
Health Gateway - Virtual Hospital
- Developed a chatbot with WhatsApp API to let patients interact with doctors and pharmacists.
- Specified specs with product managers and UX designers to determine the flow from start to end.
- Developed ways of interacting with external GraphQL service and AWS DynamoDB.
- Designed an AWS architecture to interact with other microservices.
Technologies: Express.js, GraphQL, MongoDB, Amazon Web Services (AWS), WhatsApp API, Amazon DynamoDB, Apollo Server, Back-end, Docker, AWS Lambda, Test-driven Development (TDD), CI/CD Pipelines
Next.js and TypeScript Developer
2022 - 2022
Graceful Inc
- Revamped the marketing website with new designs from Figma.
- Built the blog with a WordPress API using it as a headless CMS with the on-demand revalidation from Next.js.
- Used Framer Motion to add animation and canvas to build image series animation.
Technologies: TypeScript, Next.js, React, CSS, WordPress API, Figma, Framer Motion, Material UI, Front-end, CI/CD Pipelines
Front-end Engineer
2020 - 2022
Hopin
- Transitioned an existing Ruby on Rails view to a React client-side application. Added unit tests, formatting, and lining tools.
- Built integration between two different products using React and Node.js.
- Improved the TypeScript of the shared UI library to provide a better developer experience.
Technologies: Next.js, TypeScript, React, Styled-components, HTML, CSS, Webpack, JavaScript, Testing, WebSockets, Front-end, Sentry, CI/CD Pipelines
Front-end Engineer
2019 - 2020
Groupe SeLogerpro
- Built a server-side rendered React app with Express in TypeScript. After analyzing and benchmarking different stacks like Next.js, the app's performance increased by 90%.
- Drove workshops on testing in React and Node.js, setting a test coverage of 80%, leading to no bugs in the new app and better confidence when deploying to production.
- Collaborated with DevOps to migrate the app to AWS, Docker, and Kubernetes, providing the right tools to gather analytics from the app and reduce infrastructure costs.
Technologies: React, Styled-components, Redux, Jest, Node.js, Express.js, CI/CD Pipelines
Front-end Engineer
2018 - 2019
Smart Sailors
- Migrated the legacy code from AngularJS to React with TypeScript and unit tests with Jest.
- Built a React Native app, reusing and sharing 70% of the front-end code.
- Contributed to the back end in JavaScript and Express and gained a full-stack vision of the project.
Technologies: React, HTML, CSS, TypeScript, Jest, Express.js, Cypress, React Native, Front-end, CI/CD Pipelines
Project History
Twitch Chat App
Developed a React and Express app that allows users to embed the Twitch chat message to OBS studio thanks to the browser layer. One screen shows the chat messages with the support of emojis through Twitch API, and another screen is a layer used in OBS to show chat messages with animation.
Toptal Node.js Accelerator
https://github.com/ymeskini/node-microservicesThe Node.js Accelerator is an exclusive learning program that educates JavaScript and back-end developers in Node.js, Express.js, NestJS, and TypeScript. This two-month program consists of rigorous learning exercises, live instructor-led sessions by SMEs, hands-on activities, a stringent evaluation process, comprehensive assessments, and an incremental project where participants implement a couple of Microservices (REST APIs) using Express.js and NestJS. The incremental project simulates an eCommerce application consisting of two services, such as a user service to implement the authentication with user management and a product-catalog service that offers functionalities to manage inventory.
WhatsApp Chatbot
WhatsApp chatbot allows patients, doctors, and pharmacists to interact with each other in an easy way. I was the back-end engineer that lead and developed the service within AWS Lambda to allow on-demand only and reduce costs.
Education
2013 - 2017
Master's Degree in Engineering Management
ISC Paris - Paris, France
2013 - 2017
Master's Degree in Project Management
Cergy University - Cergy, France
Certifications
JANUARY 2023 - PRESENT
Computer Science for Web Programming
HarvardX
JANUARY 2023 - PRESENT
Redis Certified Developer
Redis
DECEMBER 2022 - PRESENT
Toptal Node.js Accelerator Graduate
Toptal, LLC
DECEMBER 2022 - PRESENT
Apollo Graph Developer — Associate Certification
Apollo GraphQL
DECEMBER 2022 - PRESENT
MongoDB Associate Developer
MongoDB University
DECEMBER 2022 - PRESENT
Apollo Graph Developer — Professional Certification
Apollo GraphQL
Skills
Libraries/APIs
React, Node.js, RxJS, WordPress API, Framer Motion, WhatsApp API, React Router, React Query, WebRTC
Tools
Prettier, Sentry, Slack, Jira, Webpack, Figma, React Apollo, MongoDB Atlas, MongoDB Shell, GitHub, GitLab, Claude Code
Languages
TypeScript, JavaScript, HTML, CSS, GraphQL, Python, SQL, C
Frameworks
Redux, Next.js, Express.js, JSON Web Tokens (JWT), Cypress, TestCafe, Material UI, Tailwind CSS, React Native, Jest, NestJS, Django
Paradigms
Testing, Search Engine Optimization (SEO), Test-driven Development (TDD), Agile, REST
Platforms
Docker, AWS Lambda, Amazon Web Services (AWS), Visual Studio Code (VS Code)
Storage
Redis, MongoDB, Amazon DynamoDB, Redis Cache, PostgreSQL
Other
Styled-components, ESLint, Axios, Bug Discovery & Tracking, WebSockets, Front-end, Full-stack, CI/CD Pipelines, IT Projects, Apollo Server, Apollo, Pub/Sub, Back-end, IT Management, APIs, Linear
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