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Applied Formal Methods Researcher (Lean 4)

Alignerr, Boston, MA, United States


About The Role
What if your deep mathematical intuition could directly shape how AI reasons, proves, and understands the world's hardest problems? We're looking for Applied Formal Methods Researchers to translate rigorous human mathematics into machine-verifiable Lean 4 proofs — working at the precise boundary where human mathematical genius meets the limits of automated reasoning.

This is a fully remote, flexible contract role designed for mathematicians who are passionate about formal verification and hungry to push proof assistants further than they've ever gone.

Organization:

Alignerr

Type:

Hourly Contract

Location:

Remote

Commitment:

10–40 hours/week

What You'll Do

Translate informal mathematical proofs into clean, structured, machine-verifiable formalizations in Lean 4

Identify gaps, hidden assumptions, and formalizable sub-structures within complex mathematical arguments

Construct Lean proofs that probe and expose the current limits of automated proof assistants

Collaborate with researchers to design and refine formal verification strategies and pipelines

Develop highly readable, reproducible proof scripts aligned with mathematical best practices and Lean idioms

Advise on proof decomposition, lemma selection, and structuring techniques for formal models

Investigate where and why automated provers break down — and document those findings rigorously

Formalize classical results and compare machine-verifiable structures against established textbook arguments

Who You Are

Hold a Master's degree or higher in Mathematics, Logic, Theoretical Computer Science, or a closely related field

Possess a strong foundation in rigorous proof writing across areas such as algebra, analysis, topology, logic, or discrete mathematics

Have hands‑on experience with Lean (Lean 3 or Lean 4), Coq, Isabelle/HOL, Agda, or comparable formal systems — Lean strongly preferred

Genuinely enthusiastic about formal verification, proof assistants, and the trajectory of mechanized mathematics

Able to translate dense, informal arguments into clean, precise formal proofs with minimal ambiguity

Nice to Have

Familiarity with type theory, the Curry‑Howard correspondence, and proof automation tooling

Experience contributing to large‑scale formalization projects such as Mathlib

Exposure to theorem provers where automated reasoning frequently fails or requires significant manual scaffolding

Prior involvement in data annotation, evaluation, or quality assessment workflowsStrong communication skills for articulating formalization decisions, edge cases, and proof strategies

The Ideal Candidate
You're a mathematically mature problem-solver who finds genuine satisfaction in taking a dense, elegant human argument and expressing it in a form a machine can fully verify. You appreciate precision, structural beauty, and the intellectual challenge of resolving the gaps that automated tools cannot yet bridge. You're drawn to frontiers — and this is one of the most exciting in modern mathematics.

Why Join Us

Work directly on cutting‑edge AI research projects alongside world‑leading labs

Fully remote and flexible — work when and where it suits you

Freelance autonomy with the structure of meaningful, high‑impact technical work

Gain exposure to how advanced AI models are trained on formal mathematical reasoning

Contribute to work that is actively advancing the frontier of mechanized mathematics

Potential for ongoing engagement and contract extension as new projects launch

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