Software Engineer, AI
$175k - $300k • New York • FullTime
Posted 8mo ago
Job Location
New York
Tech Stack
Remote Work Policy
On-site
Employment Type
FullTime
Categories
LLM Engineer
About the job
Numeral is seeking a Foundational AI Engineer to join their early-stage startup and define the technical and architectural foundations of their AI-native tax solution. This hands-on role involves designing and implementing LLM-powered automation systems, including model orchestration, tool calling, MCP-style integrations, agentic workflows, and automation-driven tooling. You will build and operate production AI systems, develop scalable backend services, and make key architectural decisions balancing latency, cost, reliability, and iteration speed. The role also includes owning infrastructure, observability, and performance, collaborating with cross-functional teams, and helping to shape engineering best practices and AI safety norms.
Responsibilities
- 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.
- 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.
Requirements
- 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: Willingness to work beyond a standard 9-5 due to rapid scaling.
- Customer Obsession: Deep care for user experience and problem-solving.
Benefits
- Competitive salary and equity
- Full medical, dental, and vision coverage
- Wellness perks like Headspace and the Peloton One App
- 401(k)
- Relocation assistance to NYC or SF
- Lunch and snacks when in the office
- Regular team offsites and company events