Senior Software Engineer
Location: New York, NY (on-site, 5 days a week)
Compensation: $200,000-$275,000 + equity
Employment: Full-time
Department: Engineering
About the Role
We're hiring an Senior 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
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
leadership, ship in production, and influence the direction of the platform.
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)
- 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)
- Optimize the omnichannel experience across SMS, voice, and email
Who You Are
- 4-8 years of full-stack experience shipping production software at a
startup, high-velocity SaaS, or AI-driven company
- Production LLM experience - you've shipped LLM-powered features that real
customers depend on, not just prototypes or internal tools
- Fluent in Python (FastAPI) and TypeScript (Next.js, React Query)
- Comfortable working in multi-tenant production systems - RLS, account-scoped
queries, JWT-based access
- Experience debugging APIs, tracing distributed issues, and working with
event-driven systems and unstructured 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 in production
- 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
- Basesalary: $200,000-$275,000
- Equity: Competitive equity package
- Full-time, on-site in our NYC office, 5 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
- Relocation assistance
