• Built teams (dev, test, designer)• Designed architecture strategies for large-scale systems (UML)• Led full-stack development with Java, NodeJS and ReactJS• Established workflow, planning, estimating, and delivering on time.• Improved the system to be able to handle a large number of requests concurrently• Worked as a DApp Developer of DeFi projects with ReactJS, Web3.Js

- Core Developer: Construct a Matching Engine for Vinex (a cryptocurrency exchange - https:///vinex.network) and develop background services to process data/requests from internal systems- Project Leader: Led a project to construct a monitoring system which can be monitor master nodes on blockchain. Also, It's for building and managing new master node hosting.Tech stacks: Java, NodeJS, Kafka, RabbitMQ, Redis, MemSQL, MongoDB

• Led a project to construct an e-commerce system using Node.js. It's not only a shop but also an affiliate marketing system for anyone, who interested in MMO.• Constructed a crawler to collect product information from popular ecommerce systems for data integration problemTech stacks: NodeJS, RabbitMQ, Redis, MariaDB, MongoDB

Developed API Gateway using NodeJS. The goal is to create a simple interface for internal services can be interact with multiple providers (about hotel, tour, flight) Tech stacks: NodeJS, MariaDB, Redis

Constructed a crawler for news and research to solve the problem of text mining, classification and big data Tech stacks: C#, MSSQL, RabbitMQ, Apache Solr, Cassandra, Redis

• Developed web application with ASP.NET • Developed windows application with C# (Good at working with DevExpress) • Developed mobile application with Android • Created technical design document about systems that follows N-Tier architect by using UML • Fixed bugs and improved application features and performance