Formal Methods Expert - Lean 4

Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D’Angelo, Larry Summers, and Jack Dorsey.

Responsibilities

• Design expert-level problems in formal methods: theorem proving, program verification, and formalization of mathematics.
• Review problems authored by peers for clarity, genuine difficulty, and ground-truth correctness.
• Evaluate and compare AI model outputs (proofs, tactics, formalizations), delivering Accept / Revise / Reject verdicts with detailed written rationale.
• Collaborate with AI research teams to ensure consistency and rigor in model outputs.
• Work independently and asynchronously to meet deadlines while improving AI model performance.

Requirements

• Strong background in formal verification / interactive theorem proving.
• Hands-on experience in Lean 4 (and mathlib), Coq, Isabelle, or Agda.
• Familiarity with type theory, mathematical logic, and program verification.
• Strong technical writing and meticulous attention to detail.

Pay

$95/hour