CHANGHU LIU

Designed and developed end-to-end systems including Fleet Server, Fleet Dashboard, Fleet Client, AIM2 Manager, and AIM2 Client for operational workflows and real-time monitoring. Built secure RESTful APIs and Laravel-based backend daemon services to improve system stability and application integration. Developed complex Angular applications and customized Angular Material components for advanced UI/UX and business requirements. Implemented aircraft mapping, reporting, and real-time dashboards to improve data visibility and decision-making. Established GitLab CI/CD pipelines and administered AWS infrastructure, servers, and databases.

Developed cryptocurrency trading and market-analysis tools in Python. Integrated exchange APIs to retrieve market prices, balances, open orders, positions, and transaction history. Implemented trading logic for order management, position tracking, profit and loss calculation, margin monitoring, and liquidation-risk analysis. Built wallet-related features for balances, token holdings, and transaction records. Designed backend services to process market data and expose normalized data through REST APIs, with safeguards for failed requests, duplicate orders, insufficient balances, and network interruptions. Applied Ethereum/blockchain fundamentals including wallets, stablecoins, smart contracts, gas fees, and Layer 2 concepts.

Designed and implemented RCS chatbot solutions for e-commerce, A2P messaging, and Cellular IoT use cases. Built scalable Laravel backend services for high-throughput messaging and multi-channel workflows. Developed API and message-conversion modules for integration across communication protocols and devices. Integrated Google Maps APIs and RASA NLP services for geolocation visualization and intelligent chatbot interactions. Containerized services with Docker to improve deployment consistency and scalability.