Software Engineer, Product

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.

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.

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

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

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

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

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

• 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

• 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.

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