Recommended expert

Melvin Vu

Full Stack Developer

Melvin Vu
La Roche-sur-Yon, France

Experience

Oct 2023 - Sep 2025
2 years

Full Stack Developer

CarersHQ Ltd

  • Led a full refactor and modernization of an aging React Native application, migrating code to a modular, scalable architecture using Expo SDK 50+, TypeScript, and React Native for consistent UI/UX across platforms.
  • Implemented native OS authentication methods (Touch ID, Face ID) using Expo Local Authentication and native modules for secure and seamless user access.
  • Architected and delivered robust care management features including timesheet generation & validation, with real-time logging and digital signatures.
  • Architected and delivered robust care management features including task scheduling and calendar sync integrated with Google Calendar API.
  • Architected and delivered robust care management features including in-app communication module with real-time messaging, audio/video calls via WebRTC, and push notifications using Firebase Cloud Messaging (FCM).
  • Architected and delivered robust care management features including location tracking & routing with Google Maps SDK and geofencing for monitoring caregiver visits.
  • Developed scalable RESTful APIs and GraphQL endpoints using NestJS, TypeORM, PostgreSQL, and Redis for caching real-time location and chat sessions.
  • Implemented microservices architecture using Docker and Kubernetes for scalable backend deployments and service isolation.
  • Created a responsive Admin Dashboard (React and Chakra UI) for managing users, carers, care logs, compliance, payments, and analytics.
  • Integrated Stripe for secure payments, earnings tracking, and subscription management.
  • Ensured data compliance with GDPR by implementing robust encryption, access control (RBAC), and audit logging.
  • Set up and maintained CI/CD pipelines using GitHub Actions and deployed it using Docker, AWS Fargate, and S3/CloudFront for frontend hosting.
  • Wrote unit and integration tests using Jest, React Testing Library, and Supertest.
  • Tech stack: React Native, Expo, TypeScript, NestJS, Node.js, PostgreSQL, Redis, Docker, Kubernetes, AWS ECS Fargate, S3, CloudFront, RDS, Stripe, Firebase, GraphQL, WebRTC, Jest, CI/CD, Sentry, Datadog.
Sep 2021 - Sep 2023
2 years 1 month

Front-end Developer

Miidas

  • Created frontend using UX design in a pixel-perfect and user friendly way.
  • Created frontend to integrate live video conferencing and collaboration function using WebRTC.
  • Developed a blockchain-based NFT marketplace platform using React, Redux Toolkit, Material-UI, Storybook, and Web3.js.
  • Introduced an atomic design with descriptive documentation using Storybook and configured its UI library and design system on top of Material-UI using all the reusable components like atoms, molecules, and organisms.
  • Built a user-friendly filtering functionality and boosted the code quality and performance significantly.
  • Created several multi-chart like line chart, bar chart, pie chart and bubble chart within backend APIs integration.
  • Created test cases for frontend using Jest.
  • Integrated ChatGPT API in user QA page.
  • Created a React Native mobile application, integrating Auth0 for authentication, Firebase Cloud Messaging for push notifications, and various third-party APIs to enhance functionality and user experience.
  • Tech stack: React, Redux, Next.js, Storybook, TypeScript, Tailwind CSS, Material-UI, WebRTC, Web3.js, Webpack, CanvasJS Chart, Node.js, ChatGPT, Jest, React Native, Firebase.
May 2019 - Aug 2021
2 years 4 months

Full-stack Engineer

Wee Bee Kids Inc

  • Created frontend using Figma design for mobile responsiveness.
  • Led the development of a unified rich text editor that runs on mobile, desktop, and web.
  • Developed a JavaScript-based image annotation app that runs on desktop and web, allowing for re-editable PNGs and JPGs by storing vector annotation data in the image binary.
  • Created a feature to present Angular-based pages in a full-screen auto-generated presentation with advanced user controls and layout options.
  • Integrated build pipelines of more than five complex applications to reliably use a common rich-text editing component.
  • Developed a custom vector graphics library for annotating both bitmaps and PDFs.
  • Implemented microservices using a serverless framework.
  • Developed a React Native mobile application and implemented a real-time messaging feature using WebSockets.
  • Tech stack: Angular, NgRx, Rx.js, EJ2, Tailwind CSS, PHP, MySQL, React Native, GraphQL.
Oct 2017 - Apr 2019
1 year 7 months

Front-end Developer

Homyse

  • Provided API endpoints with Node.js and MongoDB.
  • Built from scratch an admin platform for managing database entities and users using React, Node.js, and Mongoose.
  • Implemented complex UI components with React, TypeScript, and SCSS.
  • Improved the UX by creating several drag and drop–based components.
  • Created a mobile app and integrated it with backend APIs using Ionic framework, writing scripts to use and manipulate data from various sources.
  • Wrote scripts to use and manipulate data from various sources.
  • Tech stack: TypeScript, React, Redux, Next.js, Tailwind CSS, Node.js, Ionic, REST API, Google Cloud Platform, WebSocket, Webpack, Mongoose, Jest.

Summary

As an innovative and passionate Full Stack Developer, he has extensive experience delivering scalable, high-performance web and mobile applications across sectors including healthtech, SaaS, and crypto.

I particularly enjoy working with client-side like React, React Native, Angular, and Vue in Agile/Scrum environments.

Skills

  • Html, Css, Sass
  • Bootstrap, Tailwind Css
  • Stripe
  • Material Ui
  • Firebase
  • Javascript, Typescript
  • Solidity, Web3, Ethers
  • React, Redux, Reduxthunk, Next.js
  • Karma, Jasmine, Cypress
  • React Native
  • Restful Api, Google Apis
  • Expo
  • Webrtc
  • Angular, Rx.js
  • Sentry
  • Vue, Nuxt
  • Node.js, Express, Nest.js
  • Npm
  • Php, Laravel, Wordpress
  • Aws (Dynomodb, S3 Bucket, Lambda, Sqs, Ec2, Fargate, Cloudfront, Rds), Azure
  • Mongodb, Sql, Mysql, Postgresql, Graphql
  • Nginx
  • Jest, Mocha
  • Docker, Kubernetes, Jenkins, Maven, Terraform
  • Apache Cassandra, Kafka, Elasticsearch
  • Git, Gitlab
  • Swagger
  • Jira, Notion, Trello
  • Microservices
  • Scrum
  • Storybook

Languages

English
Advanced
Vietnamese
Intermediate

Education

Sep 2013 - Jun 2017

Hanoi University

Bachelor's degree of Computer Science · Computer Science · Hanoi, Viet Nam

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