Optimized all legacy data storages and search queries for the high-volume external web application utilizing MongoDB, resulting in the minimization of the average response time by 63%.Performed unit and load testing for the critical progressive web application that helped to improve the system's stability and scalability by 34% by identifying critical performance issues during its development.Built Express.js + socket.io server for real-time communication.Integrated with Google APIs to create the Google meeting in the appointment management system for the e-learning site.Implemented various payment gateways using Braintree and Stripe on Node.js.Migrated database from MySQL to MongoDB to adapt to changing courses and be flexible.Worked on an agile scrum team with 8 developers for a tax management system.

Implementation of Redis-based caching for expensive external API queries, meaning the application didn't need to re-fetch data as long as it met a certain "freshness" limit timeout on the Redis keyRefactor of Django models resolved an inheritance-based problem with UserProfile models and roles, unlocking new functionality for the Django REST Framework-powered API and enabling users to hold multiple roles across different companies in the React frontendLink digest Python script saved the marketing team 3 hours of work per week, a 75% reduction on link-gathering tasks (4 hours to 1 hour) via a blog aggregation APIDjango application allowed Garner Engineering to track design/construction status and site reports across dozens of projects, along with associated client and individual informationDiscussed with engineers about their challenges that they were building on Slack and Discord.

NodeJS-based chat component enabled real-time browser-based chat between users without requiring storage from the backend using SocketIO.Played a critical role in rewriting the front end in Vue.js and moving the back-end video renderer to AWS Lambda.Developed high-performance customer-facing e-commerce applications with 120K monthly users using React, Redux-saga, Redux-thunk, React Hooks, and React-Router.Introduced React Hooks and Redux to refactor front-end application of car inspection flow and used Jest in TDD.Used Elasticsearch engine on AWS to speed up web page performance and React Hooks to prevent unnecessary re-renders.Designed a REST API with a sub-team of back-end developers and did code reviews to achieve maintainable and high-quality code.OIDC authentication integrated with AWS back-end and used React UI components like kendo-react, Material UI, and React Bootstrap.Migrated codebase from Angular 2 to Vue 3 composition API.Built a front-end visualization dashboard with React.js, chart.js, and D3.Implemented BEM (Block Element Modifier) methodology for complex CSS structure.