Node Js Blockchain Defi

Jack Mcmurdo

Senior Blockchain Engineer

*************@*****.*** +358-**-******* Helsinki, Finland

Profile

Driven and accomplished Blockchain Engineer with over 7 years of experience, combining strong theoretical knowledge, practical expertise, and exceptional problem-solving abilities.

Developed blockchain solutions across both protocol and application layers, delivering robust applications with a strong emphasis on security, scalability, availability, and reliability.

Skilled in utilizing various DeFi protocols and staying ahead with emerging blockchain technologies.

Professional Experience

Senior Blockchain Engineer

TaikoLabs

2022.05 – 2024.10

•Developed account abstraction wallets from scratch (for chains without Safe SDK support) and utilized Safe SDK to implement smart contract wallets on a Multi-chain Rewarding Platform, earning positive feedback from over 100,000 users.

•Deployed a Layer 2 blockchain using Polygon CDK, encompassing the creation of smart contracts, integration of efficient bridging mechanisms, and design of intuitive user interfaces, achieving improved scalability and significantly lower transaction costs.

•Contributed to the development of a DEX-focused Layer 1 blockchain leveraging CosmosSDK and Chain Abstraction technology, integrating EVM chains, Bitcoin, and Solana.

•Contributed to the design and implementation of Frontend and Backend systems, integrating Web3 and third-party services using technologies such as React.js, Node.js, Express.js, Apollo, GraphQL, Subgraph, Web3.js, Ethers.js, and MongoDB.

•Implemented unit testing, integration testing, and fuzz testing utilizing Hardhat, Foundry, Chai, Jest, and Echidna, achieving over 90% code coverage.

•Conducted over 200 code reviews, providing constructive feedback and guidance while mentoring junior developers to enhance their skills and code quality.

•Worked closely with the DevOps team to design and implement an automated CI/CD pipeline leveraging GitHub Actions, AWS, Docker, and Kubernetes. Blockchain Developer

PureCrypto

2019.09 – 2022.04

•Contributed to the development of smart contracts and backend systems for 10+ projects, including Token Bridge, NFT Marketplace, and Tokenomics, utilizing technologies such as Solidity, Golang, Rust, Python, Node.js, and Express.js.

•Contributed to the development of a zero-knowledge (ZK) verification system leveraging ZK Proof technology.

•Developed an event-driven architecture leveraging Kafka, Node.js, Web3.js, and Ethers.js for the implementation of an RWA tokenization project.

•Integrated the Uniswap protocol into the Energyverse project, enhancing token swap functionality and significantly improving the user experience for over 5,000 platform users.

•Conducted thorough audits of smart contracts and implemented advanced security measures to strengthen product reliability.

FullStack Developer

Monad

2017.07 – 2019.08

•Developed over 5 projects, including a Healthcare SaaS Platform and an E-commerce platform, utilizing JavaScript/TypeScript frameworks such as React.js, Vue.js, Node.js, and Express.js.

•Developed a scalable and resilient microservice architecture to enhance the functionality and reliability of the payment system.

•Led the development and deployment of CI/CD pipelines utilizing GitHub Actions, Docker, and AWS CodePipeline, achieving a 40% reduction in deployment time and doubling release frequency from monthly to bi-weekly. Education

Bachelor's Degree in Computer Science

University of Helsinki

2013 – 2017

Skills

Programming Languages — Solidity, Rust, Golang, JavaScript, TypeScript, Python, C++ Blockchain — Account Abstraction, Chain Abstraction, Uniswap Protocol, Aave Protocol, Safe Protocol, Zero Knowledge, LayerZero protocol, Hardhat, Foundry, Web3.js, Ethers.js, Wagmi, Subgraph

FullStack — React.js, Next.js, Vue.js, Redux, MUI, Apollo, Node.js, Express.js, Nest.js, GraphQL, MongoDB, MySQL, PostgreSQL, Redis, Kafka

Others — Git, GitHub, AWS, Jira, Docker, Kubernetes

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