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Software Engineer, Platform

Numeral· Engineering & Product
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Hybrid (San Francisco (HQ)), Hybrid (New York), Hybrid (United States)$180k - $300kFull-timePosted 2w ago

About the role

Senior Software Engineer, Platform at Numeral building services, infrastructure, and developer interfaces powering the Numeral platform, including public API, MCP server, and integrations with billing platforms and ERPs.

Responsibilities

  • Build and evolve our public API and MCP server, making it easy for customers, developers, and AI tools to work with Numeral.
  • Build integrations with billing platforms and ERPs, handling data synchronization, workflow automation, and the real-world complexity of financial data.
  • Improve the infrastructure behind our platform, supporting reliable APIs, background jobs, and data pipelines as transaction volumes grow.
  • Own projects end to end, including technical design, implementation, rollout, and ongoing operation.
  • Improve observability, performance, and incident response so we can identify problems quickly and prevent repeat issues.
  • Automate infrastructure and deployment workflows through infrastructure-as-code, CI/CD, and container tooling.
  • Partner with product and engineering teams to ship new capabilities while keeping our systems dependable and maintainable.

Qualifications

  • 5+ years of experience building and operating backend software or platform systems in production.
  • Strong backend engineering skills, with experience in Node.js, PostgreSQL, and Redis, or comparable technologies.
  • Experience building APIs, integrations, or data pipelines, with attention to correctness, error handling, and maintainability.
  • Practical experience with AWS or another cloud platform and containerized workloads using ECS, Kubernetes, or similar tools.
  • An understanding of distributed systems fundamentals, including retries, idempotency, queues, and failure recovery.
  • Experience using logs, metrics, and tracing to debug production issues and improve system reliability.
  • The ability to work through ambiguity, make pragmatic technical decisions, and communicate tradeoffs clearly.
  • Ownership and customer focus: you follow through, care about how your work performs in production, and connect technical decisions to customer needs.

Skills

Required:Backend engineeringAPI design and developmentCloud and containersDistributed systems fundamentalsObservability and incident responseOwnership & customer focus

Benefits

  • 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!
Last updated Oct 7, 2026. Interested? Apply on the company site.
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About Numeral

SaaS & Ecommerce sales tax on autopilot.

Numeral handles all aspects of sales tax from registration to remittance for SaaS and e-commerce stores. We offer complete, white-glove service end to end.

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