Software Engineer Stack Developer
Resume:
Jin Xun
Senior Software Engineer and Blockchain Expert
PROFILE
Senior software engineer who has strengths in back-end development with over 10 years of hands-on experience in delivering high-quality web applications and 4 years of experience in building DeFi applications and P2E Games.
Building state-of-the-art, easy-to-use, user-friendly websites and applications is truly a passion of mine and I am confident I would be an excellent addition to your organization. In addition to my knowledge base, I actively seek out new technologies and stay up-to-date on industry trends and advancements. This has allowed me to stay ahead of the curve and deliver exceptional work to all of my employers, including those I've worked for on a project basis.
EMPLOYMENT HISTORY
Lead Backend Developer, Best Smile Inc
Jan 2023 – May 2023
Skills: Kotlin, Gradle, Maria DB, 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 Full Stack Developer, TNNS PRO
Feb 2022 -
Skills: Blockchain, Solidity, React, web3.js, Golang, node.js, PostgreSQL, AWS
- Developed smart contracts for Lock Tokens 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 lock tokens’ 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
********@*****.***
SKILLS
Html
CSS
JavaScript
PHP
TypeScript
React
Angular
Nest JS
Express JS
Graph QL
C/C++/C#
Qt
.Net
Java
Java Spring
Spring Boot
Kotlin
Gradle
Python Django,
Flask, Fast API
Golang
MongoDB
PostgreSQL
MySQL
Git
Circle CI
AWS
GCP
Azure
Kafka
Kubernetes
TDD
Jira
Trello
Blockchain
Architecture
Merkle Tree
Hash Table
Consensus
Algorithms
Ethereum
- 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.
Blockchain and Full Stack Developer, DeltaFi
Oct 2021 - Mar 2022
Skills: Blockchain, Rust, web3.js, node.js, react
- Developed programs for prediction game with ChainLink VRF, bet mining, bank farming, lottery and oracle contracts
- 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
Senior .Net Developer, Sistema Office Safe,
California(Part-time)
Feb 2021 - Oct 2021
Skills: C#, .Net Framework, Windows Automation
- Developed .NET app for Dentrix Ledger UI automation via .NET's UI Automation
- Handled patient search & payment fill
Senior Solidity Developer, CumRocket, UK(remote) Aug 2020 - Sep 2021
Skills: Blockchain, Solidity, ERC721, jest, GitHub
- 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 and the marketplace
- Built Staking Rewards contract so that investors can earn by staking Solana
WAX
Hedera
Solidity
Rust
web3.js
LANGUAGES
English
NFTs
Senior Full Stack Developer, SeeTickets, California Dec 2020 - Feb 2022
Skills: React, Express JS, TypeScript, GitHub, MSSQL, AWS CloudWatch, RDS, Serverless, CloudFront, S3, scrum
- Focused on co-works with other developers and designers to plan, design and develop applications
- Improved efficiency of existing solutions and fixing bugs for stable in end-user experience
- Built Restful APIs and UI component libraries and contributed open-source projects
- Consulted regularly with customers for building user-friendly web application and contributed on revenue growth
- Contributed enhancing team culture by adopting several methodologies like retrospective meeting
Senior Software Engineer, Huawei, Toronto
Oct 2018 - Aug 2020
Skills: C/C++, C#, Qt, MFC, Android, Java Spring, Spring Boot, Kotlin, React Native, Python, node.js, Kafka, COBOL, PostgreSQL
- Built FPGA based IDS and Web Firewall
- Developed Network Security and Monitoring tools
- Built native/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
- Developed Vehicle Number Recognition System and 3D Map generating System
- Implemented improved image processing algorithm with AI
Senior Software Engineer and Technical Advisor,
JobHubGroup, Connecticut
May 2016 - Sep 2020
Skills: Angular, Nest.js, TypeScript, Next.js, GitHub, PostgreSQL, Python, Circle CI, AWS Route53, CloudFront, ECS, RDS, Serverless
Contributed on 3 main projects - Hardscapes, J&D Landscaping, United Hardscapes
- Led a team of developers and designer to build user-friendly, SAAS 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
Sep 2011 - Jul 2015
Bachelor of Computer Science
Computer Science (Information Security)
Contact this candidate