zakrad

Blockchain Developer

Results-driven Blockchain Developer with extensive experience in Solidity and expertise in optimizing smart contracts for gas efficiency using assembly and knowledge of EVM opcodes. Proficient in designing and building DeFi solutions covering staking to lending/AMM protocols, leading to value generation and seamless reward distribution. Co-author of EIPs and contributor to open-source projects, particularly in account abstraction, enhancing modular smart accounts. Adept at delivering high quality contracts secured through invariant, fuzz, symbolic, mutation testing and formal verification.

Experience: 4 years

Yearly salary: $60,000

Hourly rate: $30

Residency: Hong Kong Sar


Experience

Solidity Engineer
Unhosted, Smart Wallet (Part-time)
2023 - 2024
Spearheaded the development of the Account Abstraction (ERC4337) wallet, by creating automation modules compatible with modular smart accounts based on ERC7579. Organized a hackathon for modules, empowering participants to construct custom strategy modules and receive incentives utilizing the Strategy Library for DeFi protocols. Developed a Solidity DeFi library for developers to seamlessly integrate DeFi platforms, facilitating execution fee generation across all Account Abstraction wallets based on user utilization of the DeFi strategy.
Lead Blockchain Developer
Polytrade
2022 - 2024
Led protocol engineering and development of real world asset marketplace smart contracts, resulting in collaboration with Mastercard. Engineered, designed, and developed staking and reward mechanisms for deploying staking and lender pools, totaling $15M in stake tokens distributed. Implemented Multichain solutions for marketplace and trading mechanisms on the Mastercard MTN network for trading assets. Developed Vesting contracts, DeFi solutions, and payment mechanisms in collaboration with Mountain protocol, providing financial services to 100K people without access to bank accounts. Implemented Invariant testing, fuzz testing, and mutation testing prior to external audits, enhancing sc development security and detecting rare bugs. Integrated Proof of Reserve oracles and Chain CCIP for cross-chain messaging protocols to synchronize platform smart contracts.
Blockchain Developer
ParaLead
2022 - 2022
I led the development of Parallel Market Smart Contracts, pioneering an approach to DAO governance by leveraging bonding curves. This solution eliminates conventional corporate structures and harnesses market equilibrium prices to drive optimal decision-making, effectively addressing agency problems. Enhanced the platform’s reward distribution model by combining bonding curves with Compounded Growth Rate, resulting in a more robust approach for selecting the best proposal.
Full-stack Blockchain Developer
Paper Score
2021 - 2022
Engineered a peer-to-peer paper review system for academic papers with built-in anonymization mechanisms in Paper Score, resulting in a more scalable and triple-blind mechanism that significantly improves security while enhancing privacy and confidentiality for reviewers during the evaluation process. Led the design and implementation of an end-to-end on-chain paper review process. By utilizing IPFS, the platform achieved decentralized and efficient data storage for academic papers. Engineered the Papers Ownership Contracts, pioneering the verification of academic paper ownership on the Paper Score platform within a decentralized network, marking a significant milestone in the field.

Skills

assembly
ethereum
evm
graphql
hardhat
javascript
node
postgres
react
solidity
typescript
web3js
zero-knowledge
zk-snark
english