{"id":119223,"url":"https://alion.io/job/numeral-software-engineer-ai-2","title":"Software Engineer, AI","company":{"id":1053,"name":"Numeral","domain":"numeral.com","url":"https://alion.io/company/numeral","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":92,"open_postings":18,"ghost_share":0,"stale_share":0.111,"repost_share":0,"time_to_fill_p50_days":127,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":175000,"max":300000,"currency":"USD","period":"year","gross":null,"usd_annual":300000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AWS","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"Function Calling","optional":false},{"name":"LLM","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"n8n","optional":false},{"name":"PostgreSQL","optional":false},{"name":"RAG","optional":false},{"name":"Redis","optional":false},{"name":"Tool Use","optional":false},{"name":"TypeScript","optional":false},{"name":"Pinecone","optional":true},{"name":"Zapier","optional":true}],"status":"live","first_seen_at":"2026-01-27T21:30:05Z","employer_posted_date":"2026-01-27","last_verified_at":"2026-10-16T18:44:13Z","board_verified":true,"closed_at":null,"days_open":262,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":261},"description":"About Numeral:\nNumeral is transforming how taxes get done. Digital businesses are currently bogged down by a painful web of regulations across 47 states and 70+ countries. We’re eliminating this burden so teams can focus on their core mission.\nWe’re the largest and fastest-growing AI-native tax solution. Started in 2023, Numeral has raised over $57M from Benchmark, Mayfield, Y-Combinator, and many others. We now serve over 3,000 paying customers and have more than tripled our revenue every year in our history.\nAbout the role:\nWe’re looking for a Foundational AI Engineer who thrives in ambiguity, enjoys building real-world AI systems end-to-end, and wants to define the technical and architectural foundations of an early-stage startup.\nThis is a hands-on role for someone who wants to design and implement LLM-powered automation systems: model orchestration, tool calling, MCP-style integrations, agentic workflows, and automation-driven tooling.\nWhat you’ll do:\nDesign, build, and operate production AI systems, including tool-calling agents, model orchestration layers, and RAG.\n\nImplement and maintain AI integrations using modern frameworks, MCP servers, and external model providers.\n\nBuild and evolve scalable backend services and APIs that power automated workflows and customer-facing features.\n\nThink in automation and workflows: design systems using tools like n8n, Claude Code-style agents, or similar orchestration approaches.\n\nMake architectural decisions that balance latency, cost, reliability, and iteration speed.\n\nOwn infrastructure, observability, and performance for both AI and non-AI services.\n\nCollaborate closely with product, design, and data teams to ship features that solve real customer problems.\n\nHelp define engineering best practices, AI safety/reliability norms, and our overall technical culture.\n\nWhat you’ll bring:\n7+ years of experience building products in high-growth environments.\n\n2+ years of experience building with LLMs.\n\nAvid use of state-of-the-art AI development tools such as Cursor and Claude Code.\n\nFluency with backend technologies like PostgreSQL, Redis, and cloud services (AWS preferred).\n\nExperience with frontend development, especially TypeScript and its ecosystem.\n\nStrong product sense, balancing performance, flexibility, and speed.\n\nComfortable working in dynamic startup environments with evolving needs.\n\nExcellent communication and collaboration skills.\n\nStartup mindset: Not scared of ambiguity and hungry for rapid growth\n\nIntensity & Ownership: This is not a 9-5 - we’re scaling rapidly and have a massive opportunity ahead of us.\n\nCustomer Obsession: You deeply care about the user experience and solving their problems\n\nNice to haves:\nExperience in payments, tax, accounting, or regulatory tech.\n\nExperience with automation tools (n8n, Zapier-style systems, workflow engines) or building internal automation platforms.\n\nFamiliarity with MCPs, tool calls, agent frameworks, or model orchestration patterns.\n\nUnderstanding of vector databases and concepts (such as Pinecone, HNSW).\n\nLocation:\nThis role is hybrid (3 days a week in our NYC office)\n\nWhat we offer:\nCompetitive salary and equity - you'll share directly in the company's success\n\nFull medical, dental, and vision coverage\n\nWellness perks like Headspace and the Peloton One App\n\n401(k) to help you build long-term financial security\n\nRelocation assistance to NYC or SF (if needed)\n\nLunch and snacks when you're in the office\n\nRegular team offsites and company events as we grow\n\nA culture built on ownership - 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