Senior AI Systems Engineer – On-site NYC, Equity

EngRadar; New York (NY); On-site; USD 200,000 - 275,000; Full time

Benefits offered by this job

Unlimited PTO

0 cost medical

401k matching

Relocation assistance

Job summary

Revin is hiring a Senior Software Engineer to build the production systems behind our AI agents that handle SMS, voice, and email conversations for $100M+ home-service operators. You will own end-to-end development across a Python/FastAPI backend, a Next.js/TypeScript dashboard, and the LangGraph workflows to drive agent behavior.

You will ship in production, partner with product, design, and leadership, and help scale the platform while ensuring reliability and real-time responsiveness in

Qualifications

• 4-8 years of full-stack experience shipping production software at a startup, high-velocity SaaS, or AI-driven company
• Production LLM experience — shipped LLM-powered features that real customers depend on
• Fluent in Python (FastAPI) and TypeScript (Next.js, React)
• 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

Responsibilities

• 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

Skills

Full-stack

Python FastAPI

TypeScript Next.js

LLM features

Multi-tenant systems

Production engineering

Job description

Revin is hiring a Senior Software Engineer to build the production systems behind our AI agents that handle SMS, voice, and email conversations for $100M+ home-service operators. You will own end-to-end development across a Python/FastAPI backend, a Next.js/TypeScript dashboard, and the LangGraph workflows to drive agent behavior.

You will ship in production, partner with product, design, and leadership, and help scale the platform while ensuring reliability and real-time responsiveness in