Contribute to groundbreaking AI research by helping models write real, machine-checked mathematics in Lean. This part-time role focuses on formalizing math and reviewing proofs effectively.
Cincinnatus LLC is seeking Lean engineers and formal mathematicians to work with a leading AI lab. This role involves writing Lean 4 proofs, transforming informal mathematical statements into formalized versions, and scrutinizing AI-generated proofs for accuracy. Successful candidates will thrive in proof-based mathematics and demonstrate a solid understanding of mathlib and Lean 4 tactics.
Key Responsibilities:
• Write idiomatic Lean 4 proofs compiling against current mathlib
• Formalize mathematics from various sources, ensuring statement fidelity
• Review AI-generated proofs for correctness and clarity




• Define proof quality guidelines and mathlib conventions
• Collaborate with researchers and peers to enhance standards
Requirements:
• Hands-on experience with formal proofs in Lean 4
• Robust background in proof-based mathematics or theoretical computer science
• Reliable availability of at least 20 hours per week
• Ability to communicate written proof strategies clearly
• Experience with proof assistants or metaprogramming is a plus
Bring your expertise in Lean and mathematics to support innovative AI initiatives at a leading lab.
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📌 Formal Mathematics Engineer in Lean (Toronto)
🏢 Obsidian
📍 Toronto