Product Designer

Numeral (YC W23)

Product Designer accountable for outcomes at Numeral, transforming tax processes for digital businesses using AI tools.

Posted 5/20/2026full-timeNew York City • New York • 🇺🇸 United StatesMid-LevelSenior💰 $150,000 - $400,000 per yearWebsite

About the role

Key responsibilities & impact

Own product work end to end. Partner with PM and engineering to define problems, explore solution spaces, validate concepts, and ship improvements that move key metrics — activation, time-to-first-filing, registration completion, customer-reported confidence. Stay involved through launch and iteration.
Start in an LLM. Use Claude to clarify intent on ambiguous tax workflows, draft short PRDs, and surface edge cases (nexus thresholds, marketplace facilitator rules, exemption certificates, retroactive registrations). Use this to align quickly with your team.
Validate with self-serve research. Talk directly to controllers, AP leads, and founders running ecommerce, SaaS, and digital businesses. Run quick tests. Treat research as a velocity tool, not a gate.
Prototype using AI tools. Use Cursor and Claude Code to build and iterate on flows against real product surfaces. Let AI generate code while you guide structure, behavior, and UX quality. Partner with engineers to decide what moves into the product.
Bring work into Figma. Translate validated concepts into full state coverage, system alignment, and production readiness — including the long tail of tax-specific edge states (jurisdiction conflicts, filing errors, amendment flows).
Design for the 80 / 20. Tax has enormous hidden complexity. Encode judgment under the hood — let Minerva, our internal tax engine, do the heavy lifting — while keeping the default experience simple and successful for most customers.
Contribute to patterns and culture. Share prompts, patterns, and learnings. Participate in crits and reviews that raise the bar for craft across the team.

Requirements

What you’ll need

Experience as a product designer on complex products, ideally B2B, fintech, accounting, or other systems-heavy environments.
Ownership of projects from problem definition through launch and iteration.
Active use of LLMs like Claude or ChatGPT in your design workflow.
Comfort in Cursor or Claude Code, even if you're not writing production code by hand.
A portfolio that shows strong product thinking, interaction design, and craft on dense, data-heavy surfaces.
Ability to work with PMs to define success metrics and adjust based on results.
Clear communication and comfort collaborating directly with engineers, PMs, and customers.

Benefits

Comp & perks

Competitive salary and equity — you share directly in the company's success
Full medical, dental, and vision coverage
Wellness perks including Headspace and the Peloton One App
401(k)
Lunch, dinner, and snacks in office
Regular team offsites and company events
A culture built on ownership — your work matters and people will see it

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

product designinteraction designprototypingdata-heavy surfacesproblem definitioniterationsuccess metricscustomer-reported confidencetax workflowsedge cases

Soft Skills

clear communicationcollaborationownershipresearchcraftteam participation