Software Engineer (Product)

Numeral is building the automation backbone for internet commerce — starting with the painful world of sales tax compliance. We handle everything from registration to remittance, delivering a white-glove service so e-commerce businesses can stay laser-focused on what they do best: growing their products, customers, and teams.

We're one of the fastest-growing companies from Y Combinator's W23 batch, backed by top-tier investors including Benchmark Capital. Our team has deep roots from the early days at Stripe, Airbnb, Notion, and other breakout companies — and now we're bringing that same level of craft, speed, and ambition to a space that's long overdue for reinvention.

As a foundational Full-Stack Engineer, you'll be responsible for designing and implementing APIs, services, and infrastructure that underpin our platform. You'll work in a dynamic startup environment where you can make immediate impact through:

• Leading the design and implementation of scalable, secure backend services and APIs
• Making critical architectural decisions that balance speed, data integrity, and maintainability
• Collaborating closely with product, design, and data teams
• Owning infrastructure, observability, and performance
• Shaping engineering best practices and culture

We offer a flexible, remote-first culture with strong mentorship and ownership opportunities. You'll get to be a core builder in an ambitious startup, learn hands-on about scaling international compliance systems, and work directly with leadership to drive engineering strategy and product execution.

Join us if you're excited about:

• Building complex distributed systems at scale
• Working in a fast-paced environment with evolving needs
• Making a visible impact on a rapidly growing business
• Being part of a small but mighty team tackling big challenges
• Having significant ownership and career-defining opportunities