About Numeral

At Numeral, we're building the future of tax by bringing together AI agents, human expertise, and global compliance.

We’re the largest and fastest-growing AI-native tax solution. Today, we serve more than 3,500 global businesses, including companies like Supabase, Eight Sleep, and Graza. We’ve grown quickly across our core e-commerce and software segments, more than tripled our revenue every year, and expanded into new industries, including manufacturing, distribution, and wholesale.

Numeral has raised over $157M from Insight Partners, Salesforce Ventures, Benchmark, Mayfield, Y Combinator, and many others.

About the role

We’re looking for a foundational Full-Stack Engineer who thrives in ambiguity, enjoys building complex distributed systems, and wants to define foundational architecture in a fast-growing early-stage startup. You’ll lead the design and implementation of APIs, services, and infrastructure that underpin our platform. You’ll also help drive engineering strategy, product execution, and cultural foundations alongside leadership.

What you’ll do

Design and build scalable, secure backend services and APIs from scratch.

Make architectural decisions that optimize for speed, data integrity, and long-term maintainability.

Collaborate closely with product, design, and data teams to develop performant systems that power key customer workflows.

Own infrastructure, observability, and performance for the services you build.

Help shape engineering best practices, code quality, and our overall backend culture.

What you'll bring

7+ years of experience building backend systems in high-growth environments.

Fluency with backend technologies like Node.js, PostgreSQL, Redis, and cloud services (AWS preferred).

Experience designing robust APIs and distributed systems at scale.

Strong product sensibility—able to balance performance, flexibility, and speed.

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

Nice to haves

Experience in payments, tax, accounting, or regulatory tech.

Infrastructure or platform engineering background (e.g., CI/CD, observability).

Experience scaling monolith-to-service architectures or event-driven systems.

Familiarity with GraphQL, Kafka, Terraform, or container orchestration tools.

Location

This role is hybrid (3 days a week in our SF or NYC office)

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

Relocation assistance to NYC or SF (if needed)

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!