Software Engineer Location: New York, NY (On-site, 4 days a week) Compensation: $175,000-$225,000 + equity Employment: Full-time Department: Engineering About Revin Revin builds AI-powered software for the businesses that keep our homes running: roofing, HVAC, plumbing, remodeling, and more. We help these businesses respond to customers, book appointments, and manage the customer experience across voice, SMS, and email. Revin handles around half a million customer conversations a month. Businesses with hundreds of millions in annual revenue rely on our products for work that directly affects their customers and their bottom line. Our customers include Vertex Service Partners, a national roofing and exterior-services platform with over $600M in revenue, and Del-Air, a $300M+ HVAC and plumbing business. See the impact of our work: we’ve helped Del-Air book 11,000+ membership appointments, while ImproveIt uses Revin to set 34% of its booked appointments. We’re still early, with substantial room to shape the product, the team, and the business. You’ll join a small team of sharp, ambitious people and receive meaningful equity ownership in the company you’re helping build. About the Role We're hiring a Software Engineer to build the production systems behind our AI agents — the agents that handle SMS, voice, and email conversations on behalf of $100M+ home-services operators. When our agent makes a mistake — books outside hours, dispatches to the wrong zip code, promises a service the business doesn't offer — it costs our customers real money. Your job is to help build the systems that prevent that. This is a high-ownership role. You'll work end-to-end across a Python/FastAPI backend, a Next.js/TypeScript dashboard, and the LangGraph workflows that drive agent behavior. You'll partner directly with product, design, and senior engineers, ship in production, and grow quickly. What You Will Do • Build and evolve LangGraph workflows that handle SMS and voice conversations for enterprise operators • Ship features end-to-end across a Python/FastAPI backend and a Next.js/TypeScript dashboard • Work in a multi-tenant Supabase/Postgres environment where every query is account-scoped (RLS, JWT-based access) • Help build the eval frameworks that catch agent regressions before they reach customers — we treat eval quality as a first-class engineering discipline • Integrate with messy real-world CRMs (Salesforce, ServiceTitan, LeadPerfection, AccuLynx) where the data is never clean • Partner with the voice team on real-time agent behavior (LiveKit + OpenAI Realtime) • Help optimize the omnichannel experience across SMS, voice, and email Who You Are • 2–5 years of full-stack experience shipping production software at a startup, high-velocity SaaS, or AI-driven company • Eager to work with LLMs in production — you've built with LLM-powered features and want to go deeper, even if you haven't owned them at scale yet • Working proficiency in Python (FastAPI) and TypeScript (Next.js, React Query) • Comfortable working in production systems, and eager to learn multi-tenant patterns — RLS, account-scoped queries, JWT-based access • Experience debugging APIs and tracing issues across services and data pipelines • A continuous learner comfortable operating in ambiguity. You ship, learn, and adapt. • Customer-obsessed — you want to be close to the people using what you build Bonus: • LangGraph, LangChain, or other agent frameworks • Real-time voice/audio work (LiveKit, Daily.co, Twilio Voice) • Observability tooling for LLM systems (Langfuse, LangSmith, Helicone) Don't Apply If • You wait for instructions instead of taking initiative • You want a predictable, low-ownership role. We move fast, ship in production, and own outcomes end-to-end. If you're optimizing for predictability, this won't be a fit. • You're not excited about applying AI to the built world. There's no playbook here. If you want a well-trodden path, this isn't the role. Compensation and Benefits • Base salary: $175,000-$225,000 • Equity: Competitive equity package • Full-time, on-site in our NYC office, 4 days a week • Significant upside through early ownership and career growth Benefits: • Unlimited PTO • $0 cost medical • 401k matching • Lunch and dinner in office • Gym membership stipend • Clear Travel Pass • Tech equipment of your choice • Mentorship pairing with a Revin advisor/investor