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vincentnguye958

Vincent Nguyen

@vincentnguye958

Software Engineer Team Lead

Vietnam
Alcune informazioni sono riportate in lingua inglese.
Chi sono
I am a Software Engineer with 5 years of experience building production APIs and data systems. I am strong in Node.js/NestJS and TypeScript, PostgreSQL/MySQL optimization, Redis caching, and AWS. I deliver scalable services for 10k+ daily users.... Continua a leggere

Competenze

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vincentnguye958
Vincent Nguyen
offline • 

Consulta i miei servizi

Applicazioni decentralizzate (dApps)
I will build your web3 dapp backend with jwt, and signature auth
A partire da80 USD / progettoMaggiori dettagli

Esperienza lavorativa

Team lead blockchain

Celestial JSC • Freelance

Jan 2023 - Jan 2026 • 3 yrs

● Led a 4‑engineer squad to deliver rewards/leaderboard/anti‑bot systems and backend APIs supporting a consumer product. ● Built a Faucet system for blockchain network testnet phase, over 50+ requests/s. ● Architected and delivered for blockchain network testnet phase and mainnet phase, including designing smart contracts, quests earn point system logic, scheduling reset logic, and Backend APIs---powering 10000+ users doing quests and claiming points every day. ● Implemented auth with OAuth2 + signature verification, issuing JWT/refresh tokens; improved security for high-risk actions. ● Designed and implemented smart contracts for Decentralized Exchange, OrderBook, Meme Launchpad, NFT marketplace, Presale, subgraphs using a third-party to host, a Telegram bot, and an airdrop strategy using Merkle tree for a lot of addresses. ● Built a server deployment and managed it on the production environment with AWS EC2 (NGINX Based), including backend and frontend. ● Built and developed Backend APIs to support smart contracts, real-time data updates. ● Built a high-performance server, optimized pricing with AWS, RDS, S3, Cloudfront, and EC2, indexed historical data of smart contracts for different features at 1-minute granularity, and handled 100+ requests/min. ● Testing APIs and smart contracts audit ensures everything is working smoothly in the production environment. ● Evaluated and introduced new technologies to improve delivery speed and reliability.