AlignerrDomain experts
Mathematical Formalization Specialist
up to $150/hr
About this role, in Alignerr's words
What if your deep mathematical training could directly shape the future of AI reasoning? We're looking for mathematicians with hands-on experience in formal proof systems to translate advanced mathematical arguments into machine-verifiable formalizations — working at the very edge of what proof assistants can do today.
What you'll do
- Translate informal mathematical proofs into Lean (and related proof systems) with a focus on clarity, correctness, and structure
- Analyze proofs across domains — identifying hidden assumptions, gaps, and formalizable sub-structures
- Construct formalizations that test the limits of existing proof assistants, particularly where automated tools struggle or fail
Show all 7 itemsHide the other 4 in What you'll do
- Collaborate with AI researchers to design and refine formal verification strategies
- Develop clean, reproducible proof scripts aligned with mathematical best practices and proof assistant idioms
- Guide proof decomposition, lemma selection, and structuring techniques for formal models
- Investigate automated prover failure modes and articulate why they occur
Candidate background
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 comparable proof assistants — Lean strongly preferred
- Genuinely excited about formal verification, proof assistants, and the future of mechanized mathematics
- Able to translate dense, informal mathematical arguments into precise, structured formal proofs
- Self-directed and comfortable working independently on complex, open-ended problems
Nice to Have
Show all 4 itemsHide these 4 items in Nice to Have
- Familiarity with type theory, the Curry–Howard correspondence, or proof automation tools
- Experience contributing to large-scale formalization projects (e.g., mathlib)
- Exposure to theorem provers where automated reasoning frequently requires manual scaffolding
- Strong communication skills for explaining formalization decisions, edge cases, and proof strategies
Quoted from selected sections of Alignerr's posting. The full posting may state other conditions. Read the full posting
A closer look
More context, when you need it.
Full job descriptionThe original posting, in Alignerr's words
Posted by Alignerr, reproduced here so you can judge the role before clicking. Original posting ↗
Mathematical Formalization Specialist (Lean / Formal Proof Systems)
About the Role
What if your deep mathematical training could directly shape the future of AI reasoning? We're looking for mathematicians with hands-on experience in formal proof systems to translate advanced mathematical arguments into machine-verifiable formalizations — working at the very edge of what proof assistants can do today.
This is a fully remote, flexible contract role built for mathematicians who love precision, structural elegance, and the challenge of expressing rigorous human reasoning in a form a machine can understand.
- Organization: Alignerr - Type: Hourly Contract - Location: Remote - Commitment: Flexible, task-based
What You'll Do
* Translate informal mathematical proofs into Lean (and related proof systems) with a focus on clarity, correctness, and structure * Analyze proofs across domains — identifying hidden assumptions, gaps, and formalizable sub-structures * Construct formalizations that test the limits of existing proof assistants, particularly where automated tools struggle or fail * Collaborate with AI researchers to design and refine formal verification strategies * Develop clean, reproducible proof scripts aligned with mathematical best practices and proof assistant idioms * Guide proof decomposition, lemma selection, and structuring techniques for formal models * Investigate automated prover failure modes and articulate why they occur
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 comparable proof assistants — Lean strongly preferred * Genuinely excited about formal verification, proof assistants, and the future of mechanized mathematics * Able to translate dense, informal mathematical arguments into precise, structured formal proofs * Self-directed and comfortable working independently on complex, open-ended problems
Nice to Have
* Familiarity with type theory, the Curry–Howard correspondence, or proof automation tools * Experience contributing to large-scale formalization projects (e.g., mathlib) * Exposure to theorem provers where automated reasoning frequently requires manual scaffolding * Strong communication skills for explaining formalization decisions, edge cases, and proof strategies
Sample Work
* Formalize classical proofs and compare machine-verifiable structures against textbook arguments * Investigate where automated provers break down and document why — missing lemmas, library gaps, complexity barriers * Create Lean proofs that surface deeper patterns or generalizations implicit in the original mathematics
Why Join Us
* Work on genuinely cutting-edge AI projects alongside leading research labs * Fully remote and flexible — work when and where it suits you * Freelance autonomy with the structure of meaningful, intellectually stimulating work * Contribute directly to advancing the frontier of formal verification and AI mathematical reasoning * Potential for ongoing work and contract extension as new projects launch
Working with AlignerrPay, getting started and work, from Alignerr's own pages
What the platform publishes in general. These are not extra terms confirmed for this particular role.
- Getting paid
- Billed weekly, Monday to Sunday, with approved work paid by the following Friday, according to Labelbox's help center. Payment goes through Stripe Connect or PayPal depending on your location, with one provider per country. intercom.help/labelbox/en/articles/13600616-alignerr-paym..., alignerr.com/process
- Before your first paid task
- Sign up, apply, verify your identity, set up billing and onboard. Some jobs add a Zara AI interview or domain assessments. alignerr.com/process
- How much work
- Time to your first project depends on demand and your skills, and there is no minimum number of hours. alignerr.com/faqs
- Contract
- Independent contractor, under terms with ALIGNERR LLC. alignerr.com/faqs, alignerr.com/privacy
Read on the pages linked above on 24 Sep 2026. Platforms change these terms, so check the linked page before you rely on one.
How does the pay compare?Across Domain experts roles, not this role alone
From our own daily reads of every open listing on the platforms we follow, not from Alignerr's posting. How we count.
Pay across the field: Domain experts
Across 698 roles in this field with a stated hourly rate in US dollars, on 18 platforms, the middle half pays $65 to $130 an hour at the top of the range, and the median is $100. This role's top rate, $150, is in the top quarter. Of the 260 distinct rates we count, 204 are lower and 38 are higher.
| Platform | Roles | Top of range, per hour |
|---|---|---|
| Alignerr (this platform) | 148 | $24 to $200 · median $80 |
| micro1 | 136 | $28 to $400 · median $110 |
| AfterQuery | 88 | $45 to $175 · median $100 |
| Handshake AI | 79 | $30 to $300 · median $85 |
| Mercor | 78 | $55 to $450 · median $120 |
Sources and listing historyWhere this information comes from
This listing's history
- First seen here on 27 Aug 2026, and still on Alignerr's list when we last read it on 13 Oct 2026.
- The listed pay has not changed since then.
- Posted by Alignerr
- First seen by AIPayList
- Last seen live
- Listing ID
- 00f42ced-f0a0-4233-8b74-3b70d470b610
Pay as the source states it: “$50-150/hr”.
Platforms sometimes change a rate after posting. Every listing here is re-read at least once a day and corrected when its source moves, so a difference you see on the platform is usually a change made since the last read. How freshness works.
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