● Participated in building an online shopping portal using TypeScript, Next.js, NestJS, Docker, GraphQL and Tailwind CSS● Contributed to the development and decision making for building a data-analytics platform for an AI startup (React/TypeScript/RTK/Tailwind CSS/Python/Flask/AWS)● Supported developing a business monitoring web site in Python/Django for the server and Angular for the frontend● Designed a database schema with Prisma, wrote a seed script and implemented API endpoints (Prisma/Node/Express.js)● Introduced Ionic to create a cross-platform compatible mobile application, saving the development time by 30%● Migrated Vue2 codebase to Vue3 combining with TypeScript and Pinia, improving the code quality by 50% (Vue3/Quasar)

● Led a frontend team of 4 people, providing valuable insights and guidance, mentoring, conducting thorough code reviews etc● Advised RTK Query instead of Thunk to optimize the performance and simplify the state management system● Launched a school management system using ASP.NET CORE, Angular, and RESTful Web APIs to help students navigate the digital systems that comprise their administrative and learning ecosystem● Developed solutions for diverse programming scenarios in C#, employing object-oriented programming (OOP) concepts● Applied software design principles such as SOLID for implementing responsive, accessible and well performing applications (Angular/Node/Azure)

● Designed and developed a scalable backend system on microservices architecture (TypeScript/Node.js/GraphQL/Python/RabbitMQ/Redis)● Implemented Firebase and Google OAuth authentication system on a React/Express.js application.● Worked closely with PM to define, design and ship new features, increased the test coverage to ensure better quality (Node/Express.js/Mocha/CircleCI/React testing library/Jest)● Maintained an AI-based platform and integrated Sentry for error tracking, resulting in 25% of improvement in the stability (Vue3/Node/Nest.js)● Utilized Gatsby to implement SSG and rebuilt 20+ atom, molecule and organ components using React and TypeScript● Created and maintained 15+ application-level components using React, Chakra UI and Storybook● Updated the UI and functionalities of a healthcare system according to new designs and wireframes for both web and mobile (React/Redux/React Native)

● Providing a dashboard for analysts and managers to create, manage, and monitor deliveries using React, Redux and Laravel● Delivering simple design and implementation with a focus on end user behavior● Translating over 50 wireframe and figma designs into visually-stunning responsive website pages with pixel-perfect accuracy● Debugging and fixing defects in the RFID tracking system that increased accuracy from 40% to 90% (React, Node.js)● Building mock-up pages using HTML, CSS, JavaScript, jQuery and Bootstrap● Combination of Laravel, MySQL and React to build applications according to requirements from diverse clients● Adoption of ES6 and implementation of styling to improve the code quality by 50%● Buildup of an admin system of a car-commerce platform using MERN