Jin Xun

Lead Blockchain and Fullstack Developer, TNNS PRO at TNNS
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Contact Information
us****@****om
(386) 825-5501
Location
Anaheim, California, United States, US

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Experience

    • United States
    • Spectator Sports
    • 1 - 100 Employee
    • Lead Blockchain and Fullstack Developer, TNNS PRO
      • Feb 2022 - Present

      - Developed smart contracts for LockTokens and NFT Games and passed Audit from PeckShield and Certik - Built the user-friendly website from scratch with React JS and web3.js for the smart contract interaction - Built Restful APIs for gathering and providing locktokens’ data from the network - Developed on-chain & off-chain governance protocol so that users are able to make decisions of adding new features and modifying current functionalities of the platform - Built and launched Smart Contracts for NFT based on ERC-721, ERC-1155, ERC-1167 and the marketplace - Built Staking Rewards contract so that investors can earn by staking NFTs - Introduced an AI bot to develop a reward system in which tokens are rewarded according to the match result between one player and the bot. - By using the OWL Protocol to connect real-world tennis player data to NFT sport games, created a more engaging and interactive ecosystem for digital assets in the sports industry so that users can discover and collect NFTs that are linked to their favorite tennis players, providing a more personalized and immersive experience. Show less

    • United States
    • Medical Practices
    • 1 - 100 Employee
    • Back End Developer
      • Jan 2023 - May 2023

      - Developed document based SAAS backend with Kotlin - Led a team of developers and designer to build user-friendly, SAAS platform for office workers - Designed databases, cloud architecture and RESTful APIs - Integrated with Google Slides, Google Drive, Stripe - Developed document based SAAS backend with Kotlin - Led a team of developers and designer to build user-friendly, SAAS platform for office workers - Designed databases, cloud architecture and RESTful APIs - Integrated with Google Slides, Google Drive, Stripe

    • Blockchain and Fullstack Developer, DeltaFi
      • Oct 2021 - Mar 2022

      Skills: Blockchain, Rust, Solidity, React, web3.js, Ethers JS, node.js, nest.js, GitHub, TDD, Jest, PostgreSQL - Developed smart contracts for prediction game with ChainLink VRF, bet mining, bank farming, lottery and oracle contracts and passed Audit from PeckShield and Certik - Developed airdrop contract and use merkle tree for reducing storage space and save fee - Built the user-friendly website from scratch with React JS and ethers.js for the smart contract interaction - Built Restful APIs for gathering and providing game data from the network Show less

    • Brazil
    • Health and Human Services
    • Senior C# Developer
      • Feb 2021 - Oct 2021

      Develop .NET app for Dentrix Ledger UI automation via .NET's UIAutomation. Handles patient search & payment fill. Develop .NET app for Dentrix Ledger UI automation via .NET's UIAutomation. Handles patient search & payment fill.

    • Senior Solidity Developer, CumRocket, UK(remote)
      • Aug 2020 - Sep 2021
    • Australia
    • Renewable Energy Semiconductor Manufacturing
    • 1 - 100 Employee
    • Senior Software Engineer
      • Mar 2018 - Aug 2020

      Skills: C/C++, Verilog, Android, Java Spring, Spring Boot, Java Kotlin, React Native, Python, node.js, express.js, Kafka, parse server, GitHub, PostgreSQL- Built FPGA based IDS and Web Firewall- Developed Network Security and Monitoring tools- Built hybrid applications- Designed databases, cloud architecture and RESTful APIs- Built SEO friendly landing pages using next.js- Built the main application optimizing performance providing full business features

    • Senior Software Engineer
      • Mar 2017 - Feb 2018

      Played role as senior full stack developer

    • Israel
    • Human Resources Services
    • 1 - 100 Employee
    • Senior Software Engineer and Technical Advisor,
      • Mar 2016 - Nov 2017

      Contributed on 3 main projects - Hardscapes, J&D Landscaping, United Hardscapes - Led a team of developers and designer to build user-friendly, SAS platform for home owners and hardscaping consultants - Designed databases, cloud architecture and RESTful APIs - Built SEO friendly landing pages using Next.js - Built the main application optimizing performance providing full business features Contributed on 3 main projects - Hardscapes, J&D Landscaping, United Hardscapes - Led a team of developers and designer to build user-friendly, SAS platform for home owners and hardscaping consultants - Designed databases, cloud architecture and RESTful APIs - Built SEO friendly landing pages using Next.js - Built the main application optimizing performance providing full business features

Education

  • Tsinghua University
    Bachelor of Computer Science, Computer Science
    2011 - 2015

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