Lean Engineer, Formal Mathematics (Lean 4, Mathlib, Theorem Proving)
Mercor
$90 – $110/hour · as listed
Lean Engineer, Formal Mathematics
Help advance AI research by writing and verifying machine-checked mathematical proofs in Lean 4. This remote role involves translating informal mathematics into precise formal statements, reviewing Lean code, and evaluating AI-generated proofs for correctness. You'll work directly with researchers at a leading AI lab to improve how their models understand and express rigorous mathematics. This is advanced-level work requiring deep expertise in theorem proving and the Mathlib ecosystem.
Ideal for experienced formal mathematicians, proof engineers, or developers with strong Lean backgrounds who want to contribute to AI training at scale. The position is part-time at approximately 20 hours per week, offering flexibility alongside other commitments. Compensation is $90–$110 per hour based on experience and output quality.
From the listing: Mercor marketplace · part-time · 20h/week. Help a leading AI lab teach its models to write real, machine-checked mathematics in Lean. # 1\. Overview A leading AI lab is looking for Lean engineers, formal mathematicians and proof engineers to help its AI models state and prove mathematics correctly. You'll write and review Lean 4 proofs, turn informal math into precise formal statements, and help the lab's researchers judge whether a
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