Première détection par notre source: il y a 21 jours
Lean Engineer - Formal Mathematics
@ Mercor
Toronto, Ontario
En bref
Mercor is hiring a contract Lean Engineer for formal mathematics, working remotely 20 to 40 hours a week at $90 to $110 per hour. The role writes and reviews Lean 4 statements and proofs against mathlib, formalizes mathematics from competition problems to research lemmas, and sets quality guidelines for an AI research lab.
Salaire :
90 $–110 $ de l’heure
Responsabilités :
- Write Lean 4 statements and proofs that compile against mathlib
- Formalize natural-language mathematics faithfully
- Review AI-generated Lean proofs and give written feedback
- Help define proof quality and mathlib conventions guidelines
Résumé des exigences :
- Hands-on experience writing formal proofs in Lean 4
- Comfort with mathlib and Lean 4 tactics
- Strong background in proof-based mathematics, computer science or logic
- Available at least 20 hours a week on weekdays
- Clear written communication of proof strategy
Outils et compétences
Source et dates
Type de source non vérifié · manatal
- Date publiée par l’employeur
- Non fourni
- Première détection par notre source
- 2026-10-18
- Mise à jour du dossier source
- 2026-10-18
Ces dates décrivent le dossier source, pas une vérification en direct du recrutement. Consultez l’offre originale.
Détails du poste
| Domaine | Recherche et sciences |
| Heures par semaine | 30 |
| Déplacements | avion : aucun · route : aucun |
| Milieu de travail | Domicile |
| Position | Surtout assis |
| Exigences physiques | physique faible · ordinateur élevé |
| Langues | English |
| Domaines d’études | Mathematics, Theoretical computer science, Logic |
Résumé et détails rédigés par l’IA à partir de l’offre; l’offre de l’employeur fait foi.
Mercor
Profil d’entreprise sauvegardé
Renseignements historiques provenant d’un profil The Jobs API sauvegardé (champs LinkedIn/Crunchbase). Ils ne sont pas vérifiés en temps réel; les chiffres peuvent avoir changé. Les valeurs manquantes restent inconnues.
We connect human expertise with leading AI labs and enterprises to train frontier models.
Description complète de l’entreprise
Mercor is defining the future of work. We connect human expertise with leading AI labs and enterprises to train frontier models.
- Abonnés LinkedIn
- 654 507
- Personnes associées sur LinkedIn
- 5 250
- Bureaux déclarés
- San Francisco, California 94105, US
- Catégories d’activité
- Employment
- Software
- Recruiting
- Data Collection and Labeling
- Artificial Intelligence (AI)
- Machine Learning
- Autres noms enregistrés
- Mercor
- Le profil indique une agence de recrutement
- Oui
- Investissement total déclaré
- 483 600 000
La devise et la date d’observation ne sont pas fournies; ce n’est ni une valorisation actuelle ni une ronde de financement.
Mercor is defining the future of work. We connect human expertise with leading AI labs and enterprises to train frontier models.
| Champ | Valeur |
|---|---|
| Secteur | Software Development |
| Taille | 51-200 employees |
| Siège social | San Francisco, California |
| Type d’organisation | Privately Held |
| Fondée en | 2023 |
| Offres sur Jobsy | 1 626 |
| Voir la page |
About the job
Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey.
Position: Lean Engineer, Formal Mathematics (Lean 4, Mathlib, Theorem Proving)
Type: Contract
Compensation: $90–$110/hour
Location: Remote
Commitment: 20–40 hours/week
Role Responsibilities
- Write correct, idiomatic Lean 4 statements and proofs that compile against current mathlib. Cover areas such as algebra, analysis, number theory, combinatorics, and logic.
- Formalize natural-language mathematics from competition problems and textbook results to research-level lemmas. Ensure the formal statement matches the original.
- Review AI-generated Lean statements and proofs. Identify failures or incorrect proofs and provide clear, specific written feedback.
- Help define guidelines and rubrics for proof quality, statement fidelity, and mathlib conventions.
- Collaborate with other Lean engineers and the lab's researchers to maintain consistent standards and elevate quality.
Qualifications
Must-Have
- Hands-on experience writing formal proofs in Lean 4. Examples include mathlib contributions, a formalization project, or a Lean library or tool.
- Comfort with mathlib and Lean 4 tactics. Ability to find and use the right lemmas.
- Strong background in proof-based mathematics, theoretical computer science, or logic through a degree or research record.
- Ability to turn a written statement and proof into a correct formal statement and a proof that checks.
- Engage reliably for at least 20 hours/week during weekdays.
- Clear written communication and ability to explain proof strategy and formalization choices precisely.
Preferred
- Experience with other proof assistants or dependently typed languages (Coq/Rocq, Isabelle, Agda, Haskell).
- Experience with Lean metaprogramming or AI-for-math work such as LLM provers, Lean agent environments, or benchmarks like miniF2F, ProofNet, or PutnamBench.
Compensation & Legal
- W-2 employment with Cincinnatus LLC.
- Equal Employment Opportunity employer.
Application Process (Takes 20–30 mins to complete)
- Upload resume
- AI interview based on your resume
- Submit form
Resources & Support
- For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome
- For any help or support, reach out to: [email protected]
PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.
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