Experience

SENS

• Vietnam
• IT Services and IT Consulting
• 1 - 100 Employee

• Blockchain Developer

  • Jan 2022 - Present



Kingdomgame.it

• Computer Games

• Senior Software Engineer

  • Apr 2021 - Feb 2022

  o Build a backend with NodeJS. o Add,maintaining backend API for store data from blockchain. o Write SmartContract for NFT 721, NFT 1155 Standard. o Write SmartContract for NFT market where users can buy, sell NFT o Build a graph-node layer for raw data from blockchain to Backend. o Implement connect function to the wallet ( metamask, trust wallet, bscwallet ,..). and call, send function from contract. o Build a backend with NodeJS. o Add,maintaining backend API for store data from blockchain. o Write SmartContract for NFT 721, NFT 1155 Standard. o Write SmartContract for NFT market where users can buy, sell NFT o Build a graph-node layer for raw data from blockchain to Backend. o Implement connect function to the wallet ( metamask, trust wallet, bscwallet ,..). and call, send function from contract.



TP&P Technology

• Vietnam
• Outsourcing and Offshoring Consulting
• 1 - 100 Employee

• Senior Developer

  • Aug 2020 - Nov 2021

  o Implement features for IEO, support issuers to list their coins to exchange platform. o Implement deposit and withdraw e-money feature o Implement for admin page to manage flow of deposit and withdraw o Define roles of users and admin in exchange system o Define wallets feature to manage balance, key and configuration. o Implement Matching Engine for Trading platform. it is the heart of the system. o Generate deposit address for user by blockchain network and monitor them. o Implement withdraw processor for approve withdrawals request. o Implement forwarding balance from hot wallet to admin cold wallet address. o Integration with blockchain for listing trading such as: BTC, LTC, EOS, ETH, ERC20, XLM, XRP, DASH, BCH, TRX, … > Technology: Spring boot, Spring security, Spring data, Rabbit MQ, Redis, Java 8.0, NodeJS, MongoDB Show less



Vietsoft Co. Ltd

• Vietnam
• Information Services
• 1 - 100 Employee

• Blockchain Developer

  • Aug 2018 - Aug 2020

  Working in a cryptocurrency trading platform . Taking part in developing and maintaining wallet system, including designing and developing wallet, adding new coin listings, working with blockchain development in a professional environment. Build and maintain the crypto asset platform that controls all crypto funds in and out of the company. This is a highly available system that requires extreme attention to detail from engineers that have a good sense of quality and security. Develop offline signing tool for signing valuable transactions on the local computer using encrypted private key file then creating raw transactions to broadcast later. Maintenance/health check and apply new update physical nodes, implement new 3rd party better performance than the previous native such as Parity (Open Ethereum). Development smartcontract base on Ethereum network . Working with NodeJS/ Typescript/Solidity/ PostgreSQL/ MongoDB / Docker. Write unit tests, coverage tests, and Postman tests. Deploy and monitor services on Kubernetes and Docker. Show less



GESO - Global Enterprise Solutions

• Vietnam
• IT Services and IT Consulting
• 1 - 100 Employee

• Software Engineer

  • Oct 2016 - Jul 2018

  Build and maintain the ERP for enterprise such as: TRAPHACO Pharmaceuticals Joint Stock Company , F.I.T Consumer Join Stock Company , SAIGON FOOD JOINT STOCK COMPANY, ... Drive and implement technical solution to a variety of features that serve high throughput and also high availability. Solve technical problems of moderate scope and complexity. Advocate for improvements to product quality, security, and performance. Confidently ship small features and improvements with minimal guidance and support from other team members. Collaborate with the team on larger projects. Working with Java/JavaEE, Spring MVC, Spring Boot, SQL, Hibernate, Front-end : HTML, CSS & JavaScript, Ajax, Jquery Database: SQL Server Git/Tortoise SVN Show less