Filip Stefanov

- Developed headless CMS with React.js, Node.js, and Strapi - Upgraded a powerful SaaS using Vue.js and Vuex, Vuetify framework - Updated and added new RESTful APIs by using Apollo GraphQL + AWS Lambda function - Improved search algorithm and architecture (+30% Big O) - Implemented Aherf service for SEO and added JSON-LD for better search user experience. - Increased CTR(Clickthrough rate) depends on A/B tests (+24% improved) - Integrated payment gateway (stripe API) and localized by using i18n

- Improved a FinTech platform on the Frontend side and API implementation in React - Developed mobile app from desktop web version with Firebase - Added 30+ components to be used in the global app by using styled-components - Redesigned global state management system with Redux thunk - Simplified and improved UX from new design - Improved performance by optimizing codes with modern JS and API handling - Developed Admin panel with React and Node

- Upgraded architecture of an enterprise clothing platform React, Node, MongoDB, Firebase (+7% improved in a number of requests per second) - Developed headless CRM by using Strapi, Node, and React Redesigned database MySQL to MongoDB - Developed price analysis platform depend on Price API and Google Merchant API with React and .Net - Set up and administered a continuous integration system based on CruiseControl.NET, including nightly builds with unit tests run and delivery to the test servers.

- Launched a Team Management CRM platform with jQuery, Node, Firebase, Salesforce and Twilio API - Integrated Socket.IO for real-time team collaboration using NodeJS - Developed chrome extension app for video conferencing by using WebRTC and Socket.IO