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0xMars42/README.md

0xMars42

Rust systems engineer working on EVM internals, MEV, and low-latency on-chain infrastructure. I build read-only tooling that decodes and reasons about live chain activity, and I contribute to the core Rust Ethereum stack (reth, foundry, revm, Lighthouse), including merged PRs in Paradigm's reth and foundry.

Open to full-remote roles in blockchain infrastructure, MEV, and crypto-quant.

Selected work

eth-mempool-watcher Real-time Ethereum L1 mempool monitor. Subscribes to full pending transactions, decodes DEX swap calldata across 12 selectors (Uniswap V2/V3, Universal Router, 1inch), and runs a detect to track to validate pipeline that flags sniper and sandwich patterns, then confirms them against on-chain receipts. Rust, alloy, tokio. 22 tests, CI.

base-arb-scanner Cross-DEX arbitrage scanner for Base. WebSocket newHeads, three pools read atomically through Multicall3, two-stage spot then Quoter filtering with net P&L after dynamic gas and fees. Read-only, zero capital. Rust, alloy, tokio. 25 tests, CI.

evm-opcode-bench Per-opcode EVM microbenchmark on revm. Measures real CPU nanoseconds per opcode, computes gas/ns efficiency, and surfaces mispriced opcodes.

Open source

Contributions across the Rust Ethereum stack:

  • reth (Paradigm) — merged #22168 (fix an ExEx notification-channel stall during backfill); further PRs on engine prewarming, RPC trace timeouts, and MDBX storage perf.
  • foundry (Paradigm) — merged #13389 (skip redundant config remapping detection); async trace identification and faster anvil block mining.
  • revm (bluealloy) & alloy — storage / allocation perf, unsafe-bytecode debug assertions, smaller proof-verification errors.
  • rbuilder (Flashbots) — track EXTCODEHASH / EXTCODESIZE / EXTCODECOPY in the state-access inspector.
  • Lighthouse (Sigma Prime) — #9373 fork-choice lock instrumentation, #9376 PeerDAS custody-backfill liveness fix.

Stack

Rust, C, C++, x86 assembly. EVM internals, alloy, tokio, foundry, revm. Async networking and low-latency data paths.

Contact

GitHub · X

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