phanlancer

Senior Blockchain Engineer

Seasoned Full Stack Blockchain Engineer with a strong background in both front-end and back-end development, combined with extensive expertise in blockchain technology. Skilled in front-end technologies including React.js, Vue.js and Angular, HTML, CSS, as well as back-end technologies such as Node.js, Nest.js, Python and PHP, Java. With a passion for innovation and problem-solving, adept at designing, developing and deploying end-to-end blockchain solutions. Proficient in smart contract development using languages such as Solidity and Rust and experienced in blockchain platforms such as Bitcoin, Ethereum, Hyperledger Fabric and Cosmos. Has a strong understanding of dApps, DeFi, consensus algorithms and distributed ledger technology. Excellent communication and collaboration skills, able to work effectively in cross-functional teams to deliver high-quality solutions. Ready to leverage skills and experience to drive innovation and contribute to the success of various web and blockchain projects.


Experience: 6 years

Yearly salary: $70,000

Hourly rate: $40

Nationality: 🇻🇳 Vietnam

Residency: 🇻🇳 Vietnam


Experience

Senior Software Engineer
Integra (via Toptal)
2020 - 2020
Updated Rails 3 to Rails 5 and all gems in the collaboration app. Implemented wild card domain multi-tenancy application. Implemented new features with blockchain APIs and cryptographic algorithms. Supported wildcard domains/subdomains (DevOps on AWS and Cloudflare).
Engineering Lead
Monstar Lab (via Toptal)
2019 - 2020
Led a team of three front-end developers and two back-end developers to build a Fintech micro-insurance platform. Developed React pages on AWS S3, built responsive email templates (EDM) with HTML/CSS. Created Node.js microservices and APIs on OpenShift. Conducted DevOps using Docker, Jenkins and Sonar. Developed React websites for resort world Sentosa on AWS. Worked via scrum sprints on Atlassian Jira, handled source control on Bitbucket using Git.
Senior Software Engineer
BitLenDAX
2017 - 2018
Built the React-based front end along with wallets for five different cryptocurrencies (BTC, ETH, LTC, XRP, XLM) on Google Cloud Platform. Built the Ruby on Rails back end, including RESTful APIs and an admin panel on Google App Engine. Installed and configured five blockchain nodes on Google Cloud Platform. Wrote an order matching algorithm in C++ and Golang for buy/sell orders. Built smart contracts for ERC20 tokens instant swap like DEX.
Engineering Lead
CYOTRAN
2009 - 2017
Built 20+ JavaScript front-end applications, including SPA and PWA, using JavaScript frameworks—mostly React and Angular. Built more than ten web servers using Node.js, Nest.js, providing APIs and admin panels. Led the developers, designers and QA to complete outsourcing projects from companies including TripAdvisor and MediaCorp. Built more than ten websites and back ends using Ruby on Rails. Built and deployed four smart contracts. Built smart contracts and DApps on Ethereum, EOS and Waves network. Conducted DevOps on AWS, Google Cloud Platform and DigitalOcean. Handled CI/CD using GitHub, Jenkins, CircleCI, Sonar and OpenShift.

Skills

css
ethereum
mern
react
solidity
typescript
web3js
english
chinese-mandarin