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Full-stack and Web3 developer with 10+ years of experience building scalable web applications and backend services, from REST APIs and cloud infrastructure to end-to-end production systems. I specialize in PHP (Laravel), Python, JavaScript/TypeScript, Angular, and React, with strong practices around CI/CD, databases, and reliability. I’ve also built crypto trading and market-analysis tooling by integrating exchange APIs, processing market data, and monitoring trading performance and risk (P&L, margin, and liquidation). I’m comfortable working with Ethereum fundamentals, wallets, stablecoins, smart contracts, gas fees, and Layer 2 concepts, and I enjoy turning complex technical requirements into dependable, user-facing platforms.…Full-stack and Web3 developer with 10+ years of experience building scalable web applications and backend services, from REST APIs and cloud infrastructure to end-to-end production systems. I specialize in PHP (Laravel), Python, JavaScript/TypeScript, Angular, and React, with strong practices around CI/CD, databases, and reliability. I’ve also built crypto trading and market-analysis tooling by integrating exchange APIs, processing market data, and monitoring trading performance and risk (P&L, margin, and liquidation). I’m comfortable working with Ethereum fundamentals, wallets, stablecoins, smart contracts, gas fees, and Layer 2 concepts, and I enjoy turning complex technical requirements into dependable, user-facing platforms.

CHANGHU LIU

Full Stack Developer, Back-End Developer, Web Developer, +2

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Full-stack and Web3 developer with 10+ years of experience building scalable web applications and backend services, from REST APIs and cloud infrastructure to end-to-end production systems. I specialize in PHP (Laravel), Python, JavaScript/TypeScript, Angular, and React, with strong practices around CI/CD, databases, and reliability. I’ve also built crypto trading and market-analysis tooling by integrating exchange APIs, processing market data, and monitoring trading performance and risk (P&L, margin, and liquidation). I’m comfortable working with Ethereum fundamentals, wallets, stablecoins, smart contracts, gas fees, and Layer 2 concepts, and I enjoy turning complex technical requirements into dependable, user-facing platforms.…Full-stack and Web3 developer with 10+ years of experience building scalable web applications and backend services, from REST APIs and cloud infrastructure to end-to-end production systems. I specialize in PHP (Laravel), Python, JavaScript/TypeScript, Angular, and React, with strong practices around CI/CD, databases, and reliability. I’ve also built crypto trading and market-analysis tooling by integrating exchange APIs, processing market data, and monitoring trading performance and risk (P&L, margin, and liquidation). I’m comfortable working with Ethereum fundamentals, wallets, stablecoins, smart contracts, gas fees, and Layer 2 concepts, and I enjoy turning complex technical requirements into dependable, user-facing platforms.

Available to hire

Full-stack and Web3 developer with 10+ years of experience building scalable web applications and backend services, from REST APIs and cloud infrastructure to end-to-end production systems. I specialize in PHP (Laravel), Python, JavaScript/TypeScript, Angular, and React, with strong practices around CI/CD, databases, and reliability.

I’ve also built crypto trading and market-analysis tooling by integrating exchange APIs, processing market data, and monitoring trading performance and risk (P&L, margin, and liquidation). I’m comfortable working with Ethereum fundamentals, wallets, stablecoins, smart contracts, gas fees, and Layer 2 concepts, and I enjoy turning complex technical requirements into dependable, user-facing platforms.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

French

Intermediate

Work Experience

Full Stack Developer at Tradewind Scientific Ltd.

March 1, 2022 - Present

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.

Web3 & Crypto Trading Developer at Quant Trade

March 1, 2021 - February 1, 2022

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.

Web Developer / Full Stack Developer at Summit-tech

August 1, 2018 - February 1, 2021

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.

Software Engineer / Full Stack Developer at Alibaba Group

June 1, 2014 - July 1, 2018

Contributed to user-service systems supporting more than 500 million users with high performance and availability. Designed and implemented coupon and reporting systems with real-time usage insights. Integrated Alipay payment solutions, including QR-code transactions and payment APIs. Conducted code reviews and mentored junior developers to improve code quality and system performance.