devthuku

Contributed to the development and maintenance of a Wallet-as-a-Service (WaaS) platform serving crypto exchanges globally, taking ownership of multiple critical internal and client-facing products across the full software development lifecycle. Key Achievements & Responsibilities: Sole developer and maintainer of the company's internal Ticket Management System, built end-to-end using the MERN stack (MongoDB, Express, React, Node.js) and deployed on AWS — streamlining issue tracking and improving operational efficiency across teams Co-developed a Private Key (PK) Export Tool in collaboration with a two-person engineering team, delivering a JavaScript-based solution adopted by 15+ crypto exchanges — demonstrating ability to build high-trust, security-sensitive tooling at scale Maintained and updated the official WaaS platform documentation site, ensuring developer-facing content remained accurate, comprehensive, and aligned with platform updates — directly supporting client onboarding and integration Provided technical support by triaging and resolving client support requests, acting as a bridge between end users and the engineering team to ensure timely issue resolution

Designed, developed, tested, and deployed production-grade smart contracts on the Binance Smart Chain network, delivering end-to-end blockchain solutions for clients across DeFi and NFT ecosystems. Key Achievements & Responsibilities: Architected and deployed a feature-rich ERC20 token with built-in staking mechanisms, enabling token holders to earn yield — driving user retention and long-term token utility Built and launched a fully functional ERC721 (NFT) smart contract supporting staking, ERC20 reward claiming, buying/selling, and NFT renting capabilities — a comprehensive NFT ecosystem in a single contract Implemented robust security measures including reentrancy guards, anti-whale, and anti-bot protections across all contracts, significantly reducing exposure to market manipulation and common attack vectors Integrated contracts with decentralized exchanges (DEX) to facilitate seamless on-chain token trading Collaborated closely with clients to translate business requirements into technical specifications, providing consistent progress updates throughout the development lifecycle Conducted rigorous security testing and auditing to ensure all contracts were vulnerability-free prior to mainnet deployment