David

Yang

- Developed a customized fork of Signal messaging app, streamlining it by removing redundant features to enhance user experience and maintainability. - Deployed an ERC20 token, integrating it within a proprietary DEX to facilitate seamless peer-to-peer trading. - Implemented a coin-based subscription model utilizing the created token, enabling users to access premium features and services within the messaging platform. - Ensured secure, transparent, and efficient transactions through comprehensive smart contract development.

- launched a cryptocurrency exchange platform enabling seamless cross-blockchain token exchange. - White-labeled https://changenow.io/ services into the platform by generating and managing referral keys, facilitating integration with ChangeNow APIs. - Implemented comprehensive API integrations to securely process cryptocurrency exchanges, delivering a seamless user experience with reliable transaction execution. - Designed and developed responsive frontend interfaces using React.js and robust backend infrastructure using Next.js to support smooth user interactions and high performance. - Maintained close collaboration with ChangeNow.io technical teams, ensuring seamless integration and ongoing optimization of the API services.

- Architected and developed end-to-end blockchain solutions, including liquidity pools, yield farming protocols, staking mechanisms, and governance frameworks. - Engineered robust, secure smart contracts using Solidity, emphasizing optimized gas costs and high performance. - Built full-stack applications integrating blockchain networks, real-time analytics, wallet integrations, and transaction management. - Enhanced system performance by reducing latency and implementing scalable infrastructure.

- Developed and launched a CRM system, improving client operational efficiency by 35% through process automation. - Delivered real-time analytics dashboards using React.js and Node.js, enabling strategic decision-making. - Reduced system downtime by 40% by optimizing database queries and efficient server-side processes. - Led legacy system migration to cloud infrastructure, significantly boosting scalability and performance.