| jmcph4 |

My Work

Currently at Sigma Prime doing:

Security reviews of major blockchains and DeFi protocols (Paradigm, Chainlink, and API3 to name a few)
- Reth (announcement)
Lighthouse development
- Implementing APIs that allow relays to protect themselves from MEV unbundling attacks (à la Low Carb Crusader)
Security consulting and incident response with major relays like Ultrasound and BloXroute
Internal presentations
- Introduction to Fuzzing (slides)
Community engagement
- Presented at Sozu Haus Australia (slides)

In my spare time:

blocktop, a minimalist TUI block explorer for Ethereum networks written in Rust
mkcheckpoint, a small utility for producing checkpoints of static AMM data (announcement)
awesome-reth, community-curated list of Reth-related resources (announcement)
Implemented byte-tracking for EVM memory semantics in Heimdall
Miscellaneous quality-of-life improvements to various projects (e.g., Reth, amms-rs, Artemis, etc.)

Previously

Brief stint at a crypto prop trading firm (all closed-source)
- Contributed to development of in-house Rust execution engine for atomic arbitrage
  - Supported major DEXes (Uniswap V2, Uniswap V3, Balancer V2, GMX, Aave, etc.)
  - Flashloan-capable
  - Supported both mempool and Flashbots execution
- Implemented a Rust SDK for the Hashflow market maker API
- Code review and implementation of Python-language latency-insensitive trading bots
- Analysed and documented competitor strategies on Mainnet as well as Arbitrum (some cross-chain)
Core developer (and early employee) at the first perpetual swaps protocols to deploy natively to Arbitrum
- Internal liason for all security audit firms we engaged (Sigma Prime, Runtime Verification, Secureum, and Spearbit)
- Implementation of core protocol designs in Solidity
- Designed and implemented an offchain order matching engine in Rust
- Mentored multiple rounds of interns in Ethereum protocol research and education
Completed undergraduate studies: a BCompSc(Cybersecurity) from UQ
- Included a blockchain-specific course
  - Presented on the ILF symbex fuzzer (slides)
  - Final paper was a review of DEX security at the time (paper)