Marcus Liu
Blockchain Developer
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Toronto, Ontario, Canada
Summary
Blockchain Developer with 8 years of experience in designing, developing, and deploying blockchain solutions and backend
systems. Architected projects processing over $10 million in daily transactions. Optimized performance metrics, scaled
blockchain networks to support double the load, and integrated smart contract architectures. Enhanced user experience
and system performance; strong collaborative skills for cross-functional teamwork.
Education
The University of Toronto
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09/2012-04/2016
Bachelor of Science in Computer Science
Skills
Blockchain Development
Smart Contracts, Web3, Defi, Token Standards
Bitcoin, Ethereum, Hyperledger, Polkadot, BSC, Solana, Cosmos
Consensus Algorithms, P2P network, NFT marketplaces
Programming Language
C, C++, Python, JavaScript, TypeScript, SQL/NoSQL
Solidity, Go, Golang, Rust
Web Development
React.js, Node.js, Next.js, HTML/CSS
Restful APIs, Vue.js, Angular
DevOps
CI/CD, Agile, Docker & Kubernetes
AWS, Google Cloud, Azure,
Git, GitHub, GitLab
Soft Skills
Communication
Teamwork
Work Experience
Blockchain Developer
Etherparty / Vancouver, Canada (Remote)
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01/2021–Now
Architected of the Over the Counter (OTC) segment of the trading platform, enabling daily transactions to exceed $1
million, reducing transaction processing time by 20%.
Developed a Rust-based proxy server, reducing UI latency by 20% and enhancing client experience.
Implemented ERC-1155 protocol for asset tokenization in a blockchain game, attracted over 50000 players within 6
months.
Created 50+ smart contracts on the Solana network using Rust, enhancing transaction speed by 40%.
Leveraged APIs from multiple cryptocurrency exchanges to capture real-time pricing data, creating a dashboard for
instantaneous market insights, increasing data retrieval speed by 40%.
Resolved 95% of issues within 24 hours, ensuring continuity and improvement.
Blockchain Developer
FroanX / New York, NY, USA (Remote)
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Crafted a Solidity-based auction system on the Ethereum blockchain, supporting managed bids and ERC20 token
transactions.
Devised a TypeScript proxy with the Soltsice library for strongly-typed contracts, reducing runtime errors by 30% and
doubling code maintainability by ensuring type safety and consistency.
Developed APIs for transaction creation and signing by abstracting complex cryptographic processes, reducing
implementation time by 40% and decreasing error rates by 30%.
Deployed a microservice with Spring Boot and Kubernetes, using Docker containers for isolation and Helm charts for
deployment, cutting deployment times by 50%.
Backend Developer
Sensibill / Toronto, Ontario, Canada
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06/2018 – 12/2020
06/2016 – 04/2018
Optimized API response with B-tree and GIN indexes in PostgreSQL reducing query response time by 60%.
Devised advanced indexing strategies in PostgreSQL, including composite indexes, partial indexes, and covering
indexes, reducing query execution times by 70% and enhancing performance by 40%.
Introduced horizontal scaling with Nginx as a reverse proxy, doubling user capacity to handle concurrent user requests
and improving load balancing performance by 50%.
Engineered a biometric authentication system across 10 locations, reducing unauthorized access by 80%.
Integrated third-party APIs from external applications into web platforms using OAuth 2.0 for secure authentication
and authorization.