Security • Performance • Production-grade protocols

I help teams secure, optimize, and scale EVM-based blockchain protocols. 15+ years in software engineering (C++/backend systems), now specialized in low-level smart contracts (Solidity / Yul) and Zero-Knowledge systems (Noir / Barretenberg).

I work only on well-defined, contract-backed missions. No unpaid tests.

• Protocol design & refactors (EVM)
• Smart contract security hardening (pre‑mainnet & post‑incident)
• Gas & performance optimization (Yul, EVM internals)
• Zero‑Knowledge integration (Noir / privacy-preserving flows)
• Critical off‑chain paths (indexing, services, infra)

If your protocol already has users — or money at risk — you’re my target client.

• No unpaid tests 🤑
• Technical contribution before contract ✅
• Token-only contributions💲

• Solidity (advanced), Yul, EVM internals
• Foundry / Hardhat, invariant & fuzz testing
• Smart contract security patterns

• Zero‑Knowledge proofs
• Noir / Barretenberg
• Privacy & verifiable computation

• Nodes, indexers, off‑chain services
• Cloud & self‑hosted deployments

Short, concrete, verifiable. Each repo answers: problem → approach → result.

• Problem: High gas usage and unsafe edge cases in a production contract
• Approach: Yul refactor, storage layout optimization, invariant testing
• Result: ~35% gas reduction, critical paths hardened
• Repo: dexterity, nifty

Problem: Add privacy guarantees without sacrificing UX Approach: Noir circuits + verifier integration Result: End‑to‑end private flow validated on testnet Repo: zhold

• Problem: Legacy design blocking scalability
• Approach: Modular architecture, upgrade-safe patterns
• Result: Cleaner audits, safer upgrades
• Repo: dexterity, nifty, zhold

• dexterity is not a product. It is a demonstration of architecture, security and invariant.

• nifty is not a "mint". It is a demonstration of patterns for safe-upgrade ability and governance-ready protocol.

• zhold is not a full RWA framework and does not attempt to replace regulatory processes. It is a demonstration of how you can prove your eligibility without disclosure of private data.

• Clear scope & milestones
• Contract before any technical work
• Async‑friendly, remote‑first
• Documentation & communication > hero coding

• Protocols in production or near mainnet
• Scale‑ups & Web2 companies entering Web3
• Security reviews, refactors, ZK integrations

• Token launches & hype projects
• Unfunded MVPs
• DAOs without legal entity

• GitHub Issues (for technical discussions)
• X.com (@m374crypt0)
• LinkedIn profile