Senior full stack blockchain engineer, blockchain architect, Chief Tec

Thomas Y. Liu (Tommy Liu)

Gaithersburg, MD

862-***-**** ️ ***********@*****.***

LinkedIn GitHub

Professional Summary

Senior Blockchain Engineer, Architect, and Full-Stack Developer with 7+ years of experience across decentralized finance, exchange systems (CEX/DEX), payment networks, and blockchain protocols. Co-Founder & CTO with deep expertise in building exchanges, non-custodial wallets, tokenomics systems, and blockchain infrastructure. Proven track record delivering scalable financial products, implementing cross-chain liquidity systems, and contributing to the Polkadot JAM protocol. Adept in smart contract security, consensus mechanisms, and cryptographic protocols, with strong leadership experience guiding distributed engineering teams and launching Web3 products globally. Core Competencies

Blockchain Architecture & Protocol Design (EVM, JAM, Polkadot, Hyperledger)

CEX/DEX Systems: Matching Engines, Liquidity Pools, Order Books, AMMs, Cross-Chain Swaps

Smart Contract Engineering (Solidity, Tokenomics, DeFi, Staking, Governance)

Consensus & Distributed Systems (Safrole, Patricia Trie, Merkle Proofs, PoS)

Full-Stack Development (React.js, Next.js, TypeScript, Node.js, Unity)

Cloud & Infrastructure (AWS, Kubernetes, Docker, PostgreSQL, RabbitMQ, CQRS)

Cryptography, Key Management, Wallet Security, KYC/AML Integration

Technical Leadership, Product Strategy, Team Scaling Professional Experience

Co-Founder CTO Blockchain Architect

HedgePay – Remote Feb 2025 – Present

Fintech startup delivering a self-banking, non-custodial app with CEX/DEX integrations.

Architected hybrid CEX/DEX architecture, combining custodial fiat ramps with decentralized liquidity protocols.

Designed DEX modules for cross-border stablecoin swaps, integrating AMM pools and routing algorithms.

Integrated CEX APIs (Binance, Coinbase, Kraken) for best-price execution and liquidity aggregation.

Developed non-custodial wallet infrastructure with fiat on/off ramps and virtual debit card support.

Oversaw smart contract audits for DeFi integrations, mitigating risks of on- chain liquidity.

Managed a distributed engineering team, delivering MVP to global pilot launch. Tech: Solidity, Scala, PostgreSQL, AWS, Kubernetes, Liquidity Pools, CEX APIs, Cross-Chain Bridges

Independent Blockchain Protocol Engineer

Self-Employed – Remote Jul 2024 – Present

Advanced protocol R&D and open-source contributions in Polkadot JAM.

Built DEX-style state machine abstractions for JAM, supporting parallel execution and liquidity routing.

Implemented Patricia Trie–based state management for high-throughput order and swap tracking.

Researched consensus trade-offs for CEX-style high-frequency matching vs DEX-style deterministic execution.

Delivered protocol modules enabling scalable JAM-based asset exchange systems.

Authored community-focused research articles simplifying cryptographic proofs, consensus, and liquidity models.

Tech: Scala, JAM Protocol, Cryptography, Distributed Systems, Exchange Infrastructure

Full-Stack Blockchain Developer (Founding Engineer) Metacommerce – Remote Jun 2022 – Apr 2024

Pioneer engineer building data privacy tools and DeFi-style integrations.

Delivered DEX-inspired smart contracts enabling users to exchange zero-party data tokens securely.

Implemented liquidity incentive models for brands participating in decentralized data marketplaces.

Integrated off-chain APIs with on-chain contracts, enabling hybrid DEX data exchanges.

Designed CQRS and cloud-native infrastructure to scale DEX-inspired operations.

Partnered with founders on fundraising and market strategy, positioning privacy as a new asset class.

Tech: Solidity, React.js, Next.js, CQRS, PostgreSQL, Liquidity Pools, Tokenized Data Exchange

Blockchain Developer

CafeCosmos – Remote Apr 2021 – Jun 2022

Founding contributor to an on-chain P2E economy with DeFi mechanics.

Designed DEX-style AMM pools for in-game assets, enabling free trade and liquidity.

Built smart contracts for redistribution of token value among player communities.

Integrated blockchain with Unity engine, allowing direct in-game DEX swaps.

Optimized tokenomics protocols to balance inflation/deflation mechanics via liquidity control.

Assisted in fundraising pitches by showcasing CEX/DEX integrations for game assets.

Tech: Solidity, Hardhat, TypeScript, Unity, AMMs, Tokenomics, In-Game DEX Systems

Software Development Engineer Intern (SDE Intern)

Amazon – Vancouver, BC Jul 2021 – Sep 2021

Contributed to backend vendor and dropshipping platforms supporting transaction settlement pipelines.

Implemented payment reconciliation modules, analogous to fiat/CEX clearinghouse systems.

Enhanced order routing and validation, aligning with exchange-style transaction processing.

Participated in Agile sprints, delivering production-ready backend features. Tech: Java, AWS, Vendor Systems, Transaction Processing Software Development Engineer Intern (SDE Intern)

RBC Wealth Management – Toronto, ON May 2020 – Aug 2020

Delivered productivity platform modules supporting client-asset management.

Explored Hyperledger Fabric blockchain integrations for decentralized trading infrastructure.

Collaborated with senior engineers to prototype secure transaction routing models.

Tech: Java, Hyperledger, Financial Systems

Software Developer (Contract & Intern)

Interac Corp. – Toronto, ON May 2019 – Dec 2019

Built mock e-Transfer SDK simulating high-volume payments, mirroring exchange testnets.

Prototyped Hyperledger Fabric blockchain solutions for decentralized settlement.

Delivered React.js testing tools for QA environments. Tech: Hyperledger, SDK Development, Payment Rails

Education

Bachelor of Science – Computer Science

University of Toronto – Toronto, ON 2017 – 2022

Polkadot Blockchain Academy – May 2024 – Jun 2024

Technical Skills

Languages: Solidity, Scala, TypeScript, JavaScript, Java, C#, Python Blockchain: JAM Protocol, Polkadot, Hyperledger Fabric, Smart Contracts, Tokenomics, DeFi

CEX/DEX Expertise: Matching Engines, Liquidity Pools, AMMs, Cross-Chain Bridges, Order Books, Fiat On/Off Ramps, Market Making, API Integration Frontend: React.js, Next.js, Tailwind CSS, Unity

Backend & Infra: Node.js, Docker, Kubernetes, PostgreSQL, RabbitMQ, AWS, CQRS, Step Functions

Concepts: Distributed Systems, Consensus Algorithms, Cryptography, Patricia Trie, Merkle Trees

Tools: Git, Hardhat, Truffle, Jira, Agile/Scrum

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