Lean Engineer: Formal Math & Proof Engineering (Part-Time)

Mercor; Greater London; Vor Ort; GBP 32.000 - 52.000; Teilzeit

Zusammenfassung

Obsidian is seeking Lean engineers and formal mathematicians to help its AI lab state and prove mathematics correctly in Lean 4. You will write and review Lean 4 proofs, formalize informal math, and assess model proofs for fidelity.

The role is a part-time commitment of 20–40 hours weekly, with placement under the Cincinnatus LLC as employer of record. This position offers an opportunity to work with researchers on math-heavy AI projects, contribute to standards for proof quality, and

Qualifikationen

• Hands-on experience writing formal proofs in Lean 4, with mathlib contributions or similar.
• Ability to turn informal statements into formal, checkable Lean proofs.
• Strong background in proof-based mathematics, logic, or theoretical CS.

Aufgaben

• Write correct, idiomatic Lean 4 proofs that compile against mathlib.
• Formalize natural-language mathematics into precise formal statements.
• Review AI-generated Lean proofs and provide clear feedback.

Kenntnisse

Lean 4 proofs

mathlib familiarity

proof-based math

clear communication

Ausbildung

Degree in mathematics or logic

Tools

Lean 4

mathlib

Jobbeschreibung

Obsidian is seeking Lean engineers and formal mathematicians to help its AI lab state and prove mathematics correctly in Lean 4. You will write and review Lean 4 proofs, formalize informal math, and assess model proofs for fidelity.

The role is a part-time commitment of 20–40 hours weekly, with placement under the Cincinnatus LLC as employer of record. This position offers an opportunity to work with researchers on math-heavy AI projects, contribute to standards for proof quality, and