LogoFresh Jobs Ahead
Mercor
Mercor
51 – 200 Employees
Mercor’s available profile does not include enough verified information about its products, services, customers, sector, or hiring focus to support an accurate company overview. More source material is needed before describing the business or its opportunities.
LinkedIn
Company Jobs

Lean 4 Engineer, Formal Mathematics

Write and review Lean 4 proofs for an AI lab, formalizing mathematics and assessing AI-generated theorem-proving work.

USUnited States
$90 – $110 / hour
RemotePart-timeMiddleSeniorEnglish RequiredEngineer
Haskell

Description

  • Create correct, idiomatic Lean 4 statements and proofs that compile with current mathlib
  • Formalize mathematics from natural-language sources, from competition problems and textbooks to research lemmas
  • Evaluate AI-generated Lean statements and proofs, identify errors, and provide specific written feedback
  • Develop guidelines and rubrics for proof quality, faithful statements, and mathlib conventions
  • Work with Lean engineers and researchers to uphold consistent standards and improve quality
  • Contribute to projects that train and improve AI systems

Requirements

  • Practical experience writing formal proofs in Lean 4
  • Familiarity with mathlib and Lean 4 tactics, including locating and applying suitable lemmas
  • A strong foundation in proof-based mathematics, theoretical computer science, or logic, demonstrated through a degree or research record
  • Ability to translate written mathematical statements and proofs into correct formal statements and verified proofs
  • Availability to work at least 20 hours each weekday week, with dependable engagement
  • Clear written communication and the ability to explain proof strategies and formalization decisions precisely
  • Preferred: experience with Coq/Rocq, Isabelle, Agda, Haskell, Lean metaprogramming, or AI-for-mathematics work
  • Must not currently need H-1B or STEM OPT sponsorship or support

Benefits

  • W-2 employment with payroll, benefits, and compliance handled through Cincinnatus LLC or an appropriate international entity
  • Fully remote work
  • Flexible hours, with work completed on your own schedule
  • Weekly payments through Stripe or Wise for services rendered
  • Opportunity to collaborate with leading researchers
  • Referral payments of up to $1,760 per successful referral, subject to limits

Related Jobs

NVIDIA

NVIDIA Senior Manager, Rack-Scale Systems Software Engineering

NVIDIA
H1B Visa SponsorArtificial IntelligenceHealthcareManufacturing
USUnited StatesCACaliforniaWAWashington
$248,000 – $391,000 / year
On-siteFull-timeSeniorEnglish RequiredEngineering Manager
C++Distributed SystemsGoKubernetesLinuxPythonRust

Lead NVIDIA’s engineering team building rack-scale infrastructure software for AI computing systems. Drive control planes, lifecycle orchestration, reliability, and delivery across teams.

Open
S&P Global

Customer Success Manager, Energy and Commodities — São Paulo

S&P Global
Skilled Worker Visa SponsorConsultingLogisticsMarketing
BRBrazilOn-siteFull-timeMiddleSeniorEnglish RequiredSpanish RequiredPortuguese RequiredCustomer SuccessCustomer Success Manager

Manage S&P Global Platts client relationships across Latin America, supporting onboarding, training and service delivery for energy and commodities customers. Work with regional and global teams to address client needs and strengthen the business.

Open