- Identified and fixed bugs on Github and Bugzilla(Phabricator) under Firefox projects, mainly on Firefox Devtools- Improved track hiding and context menus in Firefox devtool's profiler

Developed and maintained a non-custodial cryptocurrency wallet application for iOS and Android serving 150,000 monthly active users (MAU) and over 1 million unique users. Conducted interviews, mentored and managed team, and collaborated with product managers to plan development tasks.Responsibilities:- Developed a non-custodial wallet application on React with reusable modules and Redux Saga + node on server side- Managed and mentored a team of developers, conducting interviews, code reviews, and complexity assessments- Collaborated with product managers to plan and prioritize development tasks- Maintain the process of distribution app to the stores (appstore, google play market, huawei appgallery)- Set up and maintain CI/CD for distribution app to the stores (Azure)Accomplishments:- Launched non-custodial wallet mobile app from scratch- Implemented Redux State Manager in conjunction with Redux Saga to streamline app development process- Optimized application by reducing startup time and improving application's overall smoothness and responsiveness - Conducted interviews: 7- Integrated a bunch of apis such as Firebase, WalletConnect (v1 & v2), AmlCheck, Scanning QR codes api, etc.- Developed adapters for Ton and Kaspa blockchains- Gained a proficiency in web3 and blockchain systems, and leveraged this knowledge to create a high-quality application

Developed and launched two hybrid customer apps for iOS and Android devices on React Native with graphql + websocket on the server side. Conducted code reviews and provided mental support to the team. Collaborated with product owners to plan development tasks.Responsibilities:- Developed two hybrid customer iOS and Android apps with reusable modules on React Native and graphql + websocket on server side- Conducted code reviews, mentored team members, and supported app users with new features and analytics- Worked closely with product owners to plan and prioritize development tasksAccomplishments:- Successfully launched two hybrid apps from scratch, improving the user experience and increasing engagement- Gained expertise in React Native, graphql, and websocket, and leveraged this knowledge to build high-quality mobile apps for Studyworld

Ported an existing web application to React + Redux/GraphQL+Apollo stack, conducted code reviews, provided mental support to the team, and collaborated with the team to plan development tasks. Rewrote all basic functionality of the platform to React and developed a chatbot for users and component library.Responsibilities:- Ported an existing web application to the React + Redux/GraphQL+Apollo stack, optimized performance, and maintained app support- Conducted code reviews, mentored team members, and planned development tasks with teamImplemented graphql + apollo as the main approach for networking and state managementAccomplishments:- Rewrote all the basic functionality of the platform to React, improving app performance and user experience- Developed a chatbot for users and a component library to streamline development process