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Verified partner opportunity

Lean Engineer, Formal Mathematics (Lean 4, Mathlib, Theorem Proving)

$90 - $110 / hour

MercorRemote - location not specifiedPart-time

Help a leading AI lab teach its models to write real, machine-checked mathematics in Lean.

Is this a fit?

  • Review the official description below for experience and equipment requirements.
  • Confirm location eligibility, language requirements and weekly availability with the partner.

Apply on Mercor

Complete your application with Mercor. No HumanitApp account or fee.

What happens next

  1. Continue to the official listing and enter your application details; have your resume ready.
  2. Complete the role-specific screen or assessment requested by the partner.
  3. Confirm availability, location eligibility and work authorization if requested. The partner determines the exact process.

Last verified 2026-10-03

Exact listing verified. HumanitApp is independent from Mercor and may receive a referral fee; the partner controls assessment and hiring.

Read our Mercor review
Ready to continue?Lean Engineer, Formal Mathematics (Lean 4, Mathlib, Theorem Proving)

Official role description

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 i...

Relevant skills

AI evaluationClinical reasoningResearch

Compensation context

The listing states $90 - $110 / hour. Confirm the final rate, workload, and payment terms during the official application process.

Qualification checklist

  • Review the official description below for experience and equipment requirements.
  • Confirm location eligibility, language requirements and weekly availability with the partner.

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Before you apply

Referral and application questions

Can I start immediately through an Instant Work Offer?

This listing is not a promise of immediate work. Mercor may send separate offers to prequalified candidates. Read how Instant Work Offers work.

How should I compare the listed pay?

The listing states $90 - $110 / hour. Confirm the final rate, workload, and payment terms during the official application process.

Does Apply use a referral link?

Yes. The button opens the exact verified Mercorlisting using the referral URL published for this role.

Is HumanitApp the employer?

No. HumanitApp independently curates the opportunity. The partner platform manages applications and hiring decisions.

Must I share my details here?

No. Choose the primary Apply action to continue directly without giving HumanitApp your name or email address.

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