Lean 4 Mathematical Formalization Expert
About the Role
What if your deep knowledge of formal proof and mathematical rigor could directly shape how AI reasons about mathematics? We're looking for Lean 4 experts to translate rigorous mathematical content into machine-verified formal proofs — working at the cutting edge of AI development where automation alone isn't enough.
Organization
Alignerr
Type
Hourly Contract
Location
Remote
Commitment
Flexible — work at your own pace
What You'll Do
Formalize mathematical content from natural language sources — textbooks, research articles, exercises — into valid, compilable Lean 4 code
Translate theorems, lemmas, propositions, and proofs into precise formal representations
Ensure formal code accurately captures the mathematical meaning and logical structure of original statements
Review and validate Lean 4 formalizations for correctness, consistency, and logical soundness
Identify ambiguities, missing assumptions, or logical gaps in informal mathematical descriptions
Contribute to high-quality datasets pairing human-written mathematics with formal Lean 4 equivalents for AI training
Who You Are
Strong hands-on experience with Lean 4 — you write precise, correct, and maintainable formal proofs
Solid background in mathematics, formal logic, or formal verification
Comfortable reading advanced mathematical texts and translating them into formal systems
Exceptional attention to detail and commitment to logical rigor
Interested in the intersection of AI, automated reasoning, and mathematical verification
Nice to Have
Experience with other theorem provers or formal systems (Coq, Isabelle, Agda, etc.)
Prior involvement in AI training, expert annotation, or reasoning-focused dataset creation
Familiarity with proof assistants or formal methods research
Background in academic mathematics or computer science research
Why Join Us
Work at the frontier of AI — your contributions directly improve how AI models reason about mathematics
Fully remote and flexible — work from anywhere, entirely on your own schedule
Clearly defined tasks and evaluation criteria — you always know what success looks like
Top performers are selected for extended engagements and advanced or leadership tracks
Join a network of elite mathematicians and specialists solving problems automation can't