Alignerr is seeking expert mathematicians to translate informal mathematical proofs into machine-verifiable Lean 4 formalizations to help train AI systems. Candidates should hold at least a Master's degree in a relevant field and have hands-on experience with proof assistants like Lean, Coq, or Isabelle/HOL. This is a fully remote, flexible freelance position offering hourly compensation for 10–40 hours of work per week.