Senior Smart Contract Auditor (Foundry)

About the role

You extend Orion's audit bench with elite Foundry practice: building harnesses, fuzzing stateful systems, and validating fixes. You spend most of your time on client engagements, not shipping Orion-owned protocol products.

Responsibilities

• Execute manual review on assigned audit modules and integration surfaces
• Build Foundry fuzz and invariant suites to stress client logic during engagements
• Document reproducible exploit paths and recommended remediations
• Re-review client patches during remediation phases
• Improve shared audit templates and testing patterns for the team

Requirements

• Deep Solidity / EVM fluency — storage layout, call semantics, and gas economics are second nature
• Audit or security review experience on production smart contracts
• Strong testing discipline with Foundry including fuzzing and invariant strategies
• Clear writing in reports and finding descriptions
• Bias toward evidence — every critical claim backed by a PoC or trace

Nice to have

• DeFi, bridges, or governance-heavy codebase experience
• Experience with formal verification tooling (Certora, Halmos, or similar)
• Familiarity with account abstraction, multicall patterns, or cross-chain messaging risks
• Published audit writeups or disclosed vulnerabilities

Benefits

• Meaningful founding equity
• Flexible PTO and remote-first culture
• Budget for audits, tooling, and security conferences
• Home-office stipend and hardware signing kit
• Health coverage as we formalize benefits
• Optional team gatherings in hub cities