---
title: 'Software Engineer (AI) at Numeral'
canonical: 'https://feeny.ai/job/software-engineer-ai-numeral-new-york-5smmn3kp2vrb'
type: 'job'
last_seen: '2026-09-09'
---

# Software Engineer (AI) at Numeral

- **Company:** Numeral
- **Location:** New York, NY
- **Compensation:** $175k–$300k
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-01-27
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/Numeral/26400013-a45f-4504-a0f9-f288069ee32c/application

**Skills:** LLMs, PostgreSQL, Redis, AWS, TypeScript, Cursor, Claude Code, n8n, RAG, Model Orchestration, Payments domain knowledge, Tax domain knowledge, Accounting domain knowledge, Regulatory tech domain knowledge, Automation tools, Zapier-style systems, Workflow engines, MCPs, Agent frameworks, Vector databases

> Design and implement production AI systems, including LLM-powered automation, model orchestration, and RAG integrations. The role involves building scalable backend services, defining technical architecture, and collaborating with cross-functional teams to solve customer problems in a fast-growing startup environment.

## Job description

## ABOUT NUMERAL:

Numeral is transforming how taxes get done. Digital businesses are currently bogged down by a painful web of regulations across 47 states and 70+ countries. We’re eliminating this burden so teams can focus on their core mission.

We’re the largest and fastest-growing AI-native tax solution. Started in 2023, Numeral has raised over $57M from Benchmark, Mayfield, Y-Combinator, and many others. We now serve over 3,000 paying customers and have more than tripled our revenue every year in our history.

## ABOUT THE ROLE:

We’re looking for a Foundational AI Engineer who thrives in ambiguity, enjoys building real-world AI systems end-to-end, and wants to define the technical and architectural foundations of an early-stage startup.

This is a hands-on role for someone who wants to design and implement LLM-powered automation systems: model orchestration, tool calling, MCP-style integrations, agentic workflows, and automation-driven tooling.

## WHAT YOU’LL DO:

- Design, build, and operate production AI systems, including tool-calling agents, model orchestration layers, and RAG.
- Implement and maintain AI integrations using modern frameworks, MCP servers, and external model providers.
- Build and evolve scalable backend services and APIs that power automated workflows and customer-facing features.
- Think in automation and workflows: design systems using tools like n8n, Claude Code-style agents, or similar orchestration approaches.
- Make architectural decisions that balance latency, cost, reliability, and iteration speed.
- Own infrastructure, observability, and performance for both AI and non-AI services.
- Collaborate closely with product, design, and data teams to ship features that solve real customer problems.
- Help define engineering best practices, AI safety/reliability norms, and our overall technical culture.

## WHAT YOU’LL BRING:

- 7+ years of experience building products in high-growth environments.
- 2+ years of experience building with LLMs.
- Avid use of state-of-the-art AI development tools such as Cursor and Claude Code.
- Fluency with backend technologies like PostgreSQL, Redis, and cloud services (AWS preferred).
- Experience with frontend development, especially TypeScript and its ecosystem.
- Strong product sense, balancing performance, flexibility, and speed.
- Comfortable working in dynamic startup environments with evolving needs.
- Excellent communication and collaboration skills.
- Startup mindset: Not scared of ambiguity and hungry for rapid growth
- Intensity & Ownership: This is not a 9-5 — we’re scaling rapidly and have a massive opportunity ahead of us.
- Customer Obsession: You deeply care about the user experience and solving their problems

## EVEN BETTER:

- Experience in payments, tax, accounting, or regulatory tech.
- Experience with automation tools (n8n, Zapier-style systems, workflow engines) or building internal automation platforms.
- Familiarity with MCPs, tool calls, agent frameworks, or model orchestration patterns.
- Understanding of vector databases and concepts (such as Pinecone, HNSW).

## WHAT WE OFFER:

- Competitive salary and equity - you’ll share directly in the company’s success
- Full medical, dental, and vision coverage
- Wellness perks like Headspace and the Peloton One App
- 401(k) to help you build long-term financial security
- Lunch and snacks when you’re in the office
- Regular team offsites and company events as we grow
- A culture built on ownership - your work matters and people will see it!

## About Numeral

## Company Overview
- **One-liner**: Numeral is an AI-native, end-to-end sales tax compliance platform that automates registration, filing, calculation, and remittance for e-commerce and SaaS businesses.
- **Entity Type**: Private (Series B)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2022
- **Founders**: Sam Ross and Matt DuVall

## Core Business
- **Primary industry**: Financial Services – Sales Tax Compliance / Fintech
- **Target customers**: B2B – e-commerce brands, SaaS companies, and any business with multi-state or international sales tax obligations.
- **Mission / purpose**: To make sales tax compliance fast, easy, and worry-free so businesses can focus on growth.

## Products & Services
- **Numeral Platform**: End-to-end sales tax compliance – automated registration (nexus monitoring), calculation and collection via API, filing, and remittance with white-glove support.  
- **Global VAT Support**: Coverage for 80+ countries and tens of thousands of jurisdictions.  
- **Virtual Mailboxes**: Scanning, reading, and responding to physical tax correspondence from state and local governments.  
- **Exemption Certificate Management**: Verification and storage of exemption certificates to protect during audits.  
- **Reporting & Dashboards**: Detailed filing history and compliance analytics.  

## Market Standing
- **Valuation / Market Cap**: Not publicly available (latest round: Series B in October 2025).
- **Key Metric**: Total funding of **$57.5M** (Pre-Seed $500K, Seed $4M, Series A $18M, Series B $35M).
- **Notable Investors / Partners**: Benchmark, Mayfield Fund, Uncork Capital, Y Combinator.
- **Growth Signals**:
  - Employee headcount of **107** (181.6% YoY growth) – [LinkedIn](https://www.linkedin.com/company/numeralhq).
  - Trusted by **3,000+ businesses** including Ridge, Eight Sleep, Grüns, and Manus – [numeral.com](https://www.numeral.com/).
  - Expanding internationally with team members in 7 countries (El Salvador, Brazil, Japan, Spain, South Africa, Mexico, United States).
  - 39 active job postings (monthly posting growth of +30%).

## Competitive Advantages
- **AI-native platform**: Leverages artificial intelligence for accuracy and scale across thousands of tax jurisdictions.
- **Filing guarantee**: Numeral guarantees on-time filings and pays penalties & interest if they miss a deadline.
- **End-to-end coverage**: Registration, calculation, filing, remittance, and virtual mailbox in a single solution.
- **Deep integrations**: Connects with billing platforms and custom checkouts via the Numeral Tax API.
- **Founder pedigree**: Co-founders scaled 9-figure businesses and led engineering teams at Stripe, Notion, and Box – [Y Combinator](https://www.ycombinator.com/companies/numeral).

## Strategic Focus
- **AI-driven automation**: Continuing to build intelligent workflows that reduce manual tax work.
- **Global expansion**: Expanding international VAT coverage and supporting cross-border compliance.
- **Customer growth**: Scaling the customer base beyond early adopters to serve mid-market and enterprise companies.
- **Talent acquisition**: Aggressively hiring across engineering, sales, customer success, and tax operations – [careers](https://www.numeral.com/careers).

## Why Work Here
- **Culture**: "Scrappy, gets stuff done, moves the ball forward" – built by former operators and engineers from Stripe, Notion, and Airbnb.
- **Work policy**: Hybrid – HQ in San Francisco with remote options within the US (as noted on Y Combinator jobs).
- **Benefits**: Competitive salary, meaningful equity (stock options), comprehensive health/wellness perks, top-of-the-line equipment.
- **Growth potential**: One of the fastest-growing Y Combinator companies; employees get to shape a platform in a massive, underserved market.
- **Team**: Small but rapidly growing (107 employees) with a flat structure and direct access to founders.

## Sources
1. [numeral.com/about](https://www.numeral.com/about)
2. [numeral.com](https://www.numeral.com/)
3. [numeral.com/careers](https://www.numeral.com/careers)
4. [linkedin.com/company/numeralhq](https://www.linkedin.com/company/numeralhq)
5. [ycombinator.com/companies/numeral](https://www.ycombinator.com/companies/numeral)

## Other roles at Numeral

- [Account Executive - Commercial](https://feeny.ai/job/account-executive-commercial-numeral-hq-san-francisco-ca-xq7mz439h3bd) — HQ / San Francisco, CA
- [Director of Strategic Solutions](https://feeny.ai/job/director-of-strategic-solutions-numeral-united-states-qw2htvb7acv1) — United States
- [Senior Partner Manager, Accounting](https://feeny.ai/job/senior-partner-manager-accounting-numeral-united-states-zkqv4wrp07hy) — United States
- [Partner Manager, Accounting](https://feeny.ai/job/partner-manager-accounting-numeral-united-states-bfxzgmbr8cbr) — United States
- [Head of Strategic Finance](https://feeny.ai/job/head-of-strategic-finance-numeral-new-york-0q9r62bdygm9) — New York, NY
- [Accounting Manager](https://feeny.ai/job/accounting-manager-numeral-hq-san-francisco-ca-7xm0jrh9s6y9) — HQ / San Francisco, CA
- [Partner Manager - ERP & Billing Channels Growth](https://feeny.ai/job/partner-manager-erp-billing-channels-growth-numeral-hq-san-francisco-ca-m43arxy4nfkn) — HQ / San Francisco, CA
- [Onboarding Manager (Hybrid)](https://feeny.ai/job/onboarding-manager-hybrid-numeral-hq-san-francisco-ca-794vsza6mvmg) — HQ / San Francisco, CA
- [Strategic Finance Manager](https://feeny.ai/job/strategic-finance-manager-numeral-new-york-9y9qvd99ztyw) — New York, NY
- [Marketing Operations Manager](https://feeny.ai/job/marketing-operations-manager-numeral-hq-san-francisco-ca-rs43y3m9xe28) — HQ / San Francisco, CA