Numeral

Software Engineer (AI)

Worldwide12 hours ago

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A remote Software Development role at Numeral.

Level

Mid-level

Work

Remote

Focus

Software Development

Pay

$175k-$300k/yr

How Sydicom helps: we read this listing’s requirements and tune your CV and cover letter to the keywords its ATS (Ashby) is scanning for, wherever you are, then help you apply.

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Original listing text, shown exactly as published by the company.

What you’ll do

Design, build, and operate production AI systems, including tool-calling agents, model orchestration layers, and RAG.
Implement and maintain AI integrations using modern frameworks, MCP servers, and external model providers.
Build and evolve scalable backend services and APIs that power automated workflows and customer-facing features.
Think in automation and workflows: design systems using tools like n8n, Claude Code-style agents, or similar orchestration approaches.
Make architectural decisions that balance latency, cost, reliability, and iteration speed.
Own infrastructure, observability, and performance for both AI and non-AI services.
Collaborate closely with product, design, and data teams to ship features that solve real customer problems.
Help define engineering best practices, AI safety/reliability norms, and our overall technical culture.

What you’ll bring

7+ years of experience building products in high-growth environments.
2+ years of experience building with LLMs.
Avid use of state-of-the-art AI development tools such as Cursor and Claude Code.
Fluency with backend technologies like PostgreSQL, Redis, and cloud services (AWS preferred).
Experience with frontend development, especially TypeScript and its ecosystem.
Strong product sense, balancing performance, flexibility, and speed.
Comfortable working in dynamic startup environments with evolving needs.
Excellent communication and collaboration skills.
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

Even better

Experience in payments, tax, accounting, or regulatory tech.
Experience with automation tools (n8n, Zapier-style systems, workflow engines) or building internal automation platforms.
Familiarity with MCPs, tool calls, agent frameworks, or model orchestration patterns.
Understanding of vector databases and concepts (such as Pinecone, HNSW).

About Numeral

Numeral

YC W23

Software Development

20 open roles on Sydicom

Numeral is the fastest, easiest way to stay compliant with US sales tax and global VAT. Trusted by 3,000+ businesses, including Eight Sleep, Ridge, and Manus, our end-to-end platform keeps our customers compliant wherever they sell, with registrations, filings, calculations, and ongoing compliance support. Numeral’s AI-native solution covers more than 70 countries and tens of thousands of jurisdictions and is built for accuracy and scale.

Source: Y Combinator