Software Engineer, Infra
Numeral · San Francisco
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 Software Engineer (Infrastructure) who thrives on solving complex distributed systems problems at scale. You’ll design and build core infrastructure, improve service reliability and observability, and ensure the platform’s scalability as we handle increasing transaction volumes and integrations.
This is a high-leverage, foundational role: your work will define the architecture and technical direction of our infrastructure platform while directly impacting our customers’ experience and the company’s trajectory.
What you’ll do:
Design and build highly scalable, secure, and reliable infrastructure to support critical APIs, services, and data pipelines.
Lead infrastructure architecture decisions for performance, observability, and fault tolerance.
Drive improvements in system reliability, monitoring, and incident response.
Collaborate closely with product, platform, and data engineering teams to enable rapid feature development without compromising stability.
Automate infrastructure management through infrastructure-as-code, CI/CD pipelines, and container orchestration.
Champion best practices in operational excellence, disaster recovery, and distributed systems design.
What you’ll bring:
7+ years of experience building and scaling backend or infrastructure systems in high-growth environments.
Proficiency in Node.js, PostgreSQL, Redis, and AWS (or equivalent cloud platforms).
Experience managing containerized workloads using tools like Kubernetes, ECS, or similar.
Expertise in observability tooling (e.g., Datadog, Prometheus, OpenTelemetry) and monitoring pipelines.
Proven ability to design fault-tolerant, distributed systems at scale.
Strong debugging and performance optimization skills across the stack.
Exceptional collaboration and communication skills, with experience partnering cross-functionally.
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 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!
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