Is this job worth applying to?

Pay

Above typicalTops out at $200/hr. The typical top rate across 47 priced math listings is $90/hr.

Getting in

Hard to get in~1–2 hours of assessments. Valid government photo ID.

Steady work

Work is patchyFeast-or-famine project volume.

Payout record

Some delaysSchedule: weekly, by Friday for the prior Monday–Sunday. Paid via Stripe or PayPal (depends on country).

Freshness

RecentPosted 2w ago. Still listed on Alignerr on Nov 6, 2026.

Where you live

Not statedThe listing names no country.

The job description

About the Role

What if your deep mathematical expertise could directly shape how the world's most advanced AI systems understand and reason about formal proof? We're looking for Formal Verification Scientists to translate rigorous human-written mathematics into machine-verifiable Lean 4 proofs — working at the very frontier of what proof assistants can express, capture, and automate.

This is a fully remote, flexible contract role designed for mathematicians who live and breathe formal reasoning. If you find satisfaction in taking a dense, elegant argument and expressing it in a form a machine can verify — this role was made for you.

What You'll Do

Translate informal mathematical proofs into Lean 4 (and related proof systems) with an emphasis on clarity, structure, and correctness
Analyze generic and domain-specific proofs — identifying hidden assumptions, gaps, and formalizable sub-structures
Construct formalizations that push the limits of existing proof assistants, especially in areas where tools struggle or fail
Collaborate with AI researchers to design, refine, and evaluate strategies for improving formal verification pipelines
Develop clean, readable, reproducible proof scripts aligned with mathematical best practices and Lean idioms
Provide expert guidance on proof decomposition, lemma selection, and structuring techniques for formal models
Investigate where automated provers break down and articulate precisely why — whether due to complexity, missing lemmas, or library limitations
Formalize classical proofs and compare machine-verifiable structures against textbook arguments
Create Lean proofs that surface deeper patterns or generalizations implicit in the original mathematics

Who You Are

Hold a Master's degree or higher in Mathematics, Logic, Theoretical Computer Science, or a closely related field
Have 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 a comparable formal proof system — Lean 4 strongly preferred
Deeply enthusiastic about formal verification, proof assistants, and the future of mechanized mathematics
Able to translate informal mathematical arguments into clean, well-structured formal proofs independently
Thrive working at the intersection of mathematics and computer science, where precision is non-negotiable

Nice to Have

Familiarity with type theory, the Curry-Howard correspondence, and proof automation tools
Experience contributing to large-scale formalization projects such as Mathlib
Exposure to theorem provers where automated reasoning frequently fails or requires substantial manual scaffolding
Prior experience with data annotation, data quality evaluation, or AI training workflows
Strong communication skills for explaining formalization decisions, edge cases, and reasoning strategies to interdisciplinary teams

Why Join Us

Work directly with world-leading AI research labs on genuinely frontier problems
Fully remote and flexible — structure your work around your life, not the other way around
Freelance autonomy with the intellectual depth of high-stakes mathematical research
Gain exposure to how advanced AI models are trained and where formal mathematics fits into that process
Contribute to a body of work that maps the boundary of what machines can and cannot yet verify
Potential for ongoing collaboration and contract extension as new projects launch

How do you apply to Alignerr?

Apply on Alignerr

The Apply button opens this post on Alignerr's own site. You apply with them, not with Rubric. Budget about 1–2 hours of assessments.

Get through screening

What Alignerr asks for after you apply:

Take the TestGorilla skills assessment (usually one attempt per role)
Verify your identity with Persona
Join the Alignerr Slack community
Set up payouts once you are assigned to a project

Start work and get paid

Pay schedule: weekly, by Friday for the prior Monday–Sunday. Paid via Stripe or PayPal (depends on country). You're paid for the work they hand out, not a fixed salary.

Alignerr also needs

Valid government photo ID
Degree or professional experience for expert roles
Webcam for proctored assessments on some roles

Red flags

Red flagLong gaps with no project after passing
Red flagWorker reports of delayed or withheld payments on Glassdoor

What is Alignerr like to work for?

Labelbox's contractor network, which hires generalists and domain experts to label data and write and grade AI training tasks.

Advertised pay	$15–150/hr
Getting in	Hard to get in
Application takes	~1–2 hours of assessments
How you get paid	Weekly, by Friday for the prior Monday–Sunday, via Stripe or PayPal (depends on country)
Payout record	Some delays
Countries	Accepts most countries but blocks signups from about two dozen; posts India-specific roles such as Hindi, Telugu and Indian-English language and cultural review work.

Generalist and bilingual work is around $15–20/hr, coding QA $30–40/hr, and senior software, advanced math, medical and law roles $70–150/hr; some projects pay per approved task.