Senior Backend Engineer
Hong Kong
Senior Backend Engineer with expertise in Web3/blockchain, DeFi, and backend systems. Experience includes payment systems, token bridging, staking, DeFi protocols, and microservice architectures. Previously at Crypto.com, Almond FinTech, and Playfull. Strong background in quantitative development, crypto exchanges, and full-stack engineering.
Salary
USD 150,000 – 200,000
Playfull (formerly Earn Alliance)
Apr 2024 — Present
Implemented a payment system supporting web, mobile, and crypto payments via Stripe, RevenueCat, and smart contracts, enabling a conversion rate of over 12%. Led backend development for a token bridging and staking feature through hot wallets and Temporal workflows. Engaged with clients including Avalanche and Pudgy Penguins to develop tailored battle pass experiences. Architected an offerwall system designed to handle 1M+ MAU through Kubernetes.
Almond FinTech
May 2023 — Mar 2024
Revamped the Java core settlement optimization engine, improving response time by over 99.9%. Captained a winning hackathon team. Integrated several crypto exchanges for market data collection and analysis.
Crypto.com
Jul 2019 — Nov 2022
Led DeFi development for market data and market making using Node.js and Web3 frameworks. Formulated a microservice-oriented backend architecture integrating decentralized applications on multiple blockchains including Uniswap, SushiSwap, PancakeSwap, VVS Finance, and Orca. Engineered in-house GUI trading platforms using .NET and Python for automated trading, risk management, and crypto market tracking of 1K+ pairs. Improved multisource connection handling resulting in over 2x increase in trading and monitoring efficiency.
Punchcard Systems
Nov 2016 — Aug 2018
Developed software for 15+ clients using full-stack frameworks including .NET Core, Azure, SQL Server, and React/Redux. Contributed to coordinated efforts that led to 100% growth in company size. Analyzed client needs to provide effective solutions resulting in several ongoing relationships.
MSc · Big Data Technology
2018 – 2019
BSc · Computing Science
2011 – 2016