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Tony Fung Choi Fung

Tech Lead โ€ข Web3 Infrastructure

Hong Kong

๐Ÿ”ดHODLing

Senior engineering leader with 12+ years architecting high-scale, mission-critical systems across Web3 infrastructure and decentralized identity platforms. Track record of taking protocols from zero to production, shipping SDKs adopted by hundreds of thousands of users, and building engineering orgs. Comfortable writing Solidity, mentoring 10+ engineer teams, and translating business strategy into technical roadmaps.

Skills

Engineering Leadership9/10
ERC-4337 Account Abstraction9/10
Solidity9/10
Decentralized Identity (DID/Verifiable Credentials)9/10
Ethers.js8/10
Hardhat (8/10)Foundry (8/10)Smart Contract Security & Auditing (8/10)DeFi Protocol Engineering (8/10)Cross-chain Messaging (8/10)Viem (7/10)CI/CD (GitHub Actions, CircleCI) (7/10)Docker (7/10)Swift (iOS) (7/10)PySpark (6/10)React Native (6/10)Kubernetes (6/10)Kafka (6/10)AWS (6/10)PostgreSQL (6/10)

Work Experience

Lead Software Engineer

Animoca Brands

Jan 2024 โ€” Present

Architected core identity layer for Moca Network integrating Privado ID for zero-knowledge verifiable credentials. Designed and shipped AirKit SDK consolidating ERC-4337 account abstraction, session keys, gasless transactions, and verifiable credentials. Orchestrated technical launch of Moca Chain (identity L2), including validator bring-up and bridge design. Engineered high-security token claim/distribution protocols for hundreds of thousands of concurrent users, optimizing gas costs by 40%+ via Merkle-batching. Led Moca Network's inaugural Hacker House at ethCC 2025.

Technical Lead

Optymize Protocol

Apr 2023 โ€” Jan 2025

Led end-to-end technical design for a DeFi risk-sharing protocol. Architected smart contracts enabling risk sharing across different assets with yield via 3rd party aggregators. Established engineering standards including CI-gated Slither, coverage thresholds, and audit-readiness checklists. Mentored contributors and improved delivery velocity without compromising contract safety.

Engineering Lead

Credential Proof

Jun 2022 โ€” Jun 2023

Built a decentralized professional-identity protocol from zero to pilot, shipping credential issuance, verification, and revocation flows. Cut deployment friction ~60% by introducing automated CI/CD, reproducible local chains, and Slither/Mythril-gated contract testing. Partnered with founders and design to convert product vision into sprint work and represented the team in investor/partner technical diligence.

Senior Software Engineer

Henderson China Investment Ltd.

Jan 2020 โ€” Jan 2022

Architected an IoT-integrated smart-data platform using PySpark and Python, ingesting telemetry from thousands of sensors across property assets and surfacing operational KPIs to facilities leadership.

Co-Founder & Technical Consultant

Artanis Technology Ltd.

Jan 2018 โ€” Jan 2023

Founded and ran a boutique engineering consultancy. Led digital transformation for the Tourism Authority of Thailand (TAT), shipping React/Node.js engagement platforms serving regional tourism campaigns.

Mobile Lead

WWE Ltd. (Lane Crawford subsidiary)

Jan 2016 โ€” Jan 2017

Directed iOS (Swift) development of 'MyMM', a luxury marketplace app. Managed distributed offshore teams across multiple time zones and delivered on a rigid retail launch window.

Senior Analyst Programmer

Cherrypicks Ltd.

Jan 2012 โ€” Jan 2016

Engineered high-traffic mobile solutions including the MTR Mobile app (millions of daily users). Awarded HKICTA Gold for technical excellence in a commercial mobile solution.

Education

Hong Kong University of Science and Technology (HKUST)

BEng ยท Computer Science