Extend is building a modern document processing cloud. We're on a mission to transform how the world works with unstructured data. As a Customer Success Engineer at Extend, you’ll be the front line of defense for our customers: the first technical responder ensuring they can deploy, operate, and scale Extend successfully. This will be an intense role with high potential and slope. Our customers are some of the most advanced AI and engineering teams, from Fortune 500 companies to rapidly scaling start-ups. You’ll triage issues, debug configurations, maintain high-stakes SLAs, and surface product insights that set the tone for every future interaction. This role is ideal for someone who wants deep technical exposure, constant learning, and high ownership. For the right person, this role serves as a pathway to our Forward Deployed Engineering track (or whatever hat they want to wear at a rapidly scaling start-up). Why you should consider joining We grew revenue 15x last year to several million ARR, and growth continues to accelerate. Extend is used in mission-critical flows at enterprises (Square, Zillow, Chime) and high-velocity startups (Brex, Mercury, Checkr), plus many more. The document processing market has expanded 1000x due to LLMs, and existing solutions have low NPS; the support function is and will be a true differentiator. You’ll join a talent-dense, high-performance engineering culture (former founders, world record holders, etc.). You’ll gain firsthand exposure to how cutting-edge teams deploy LLMs into production, and how world-class engineering organizations debug, scale, and operationalize complex AI systems. The role has real slope: strong performers can quickly progress into customer-facing engineering roles with ownership over deployments, architecture, and integrations. Impact Your work ensures that customers can trust Extend in their most mission-critical workflows. You’ll directly influence: Extend’s ability to scale support as demand grows exponentially Response times, SLA reliability, and customer confidence during incidents The quality of our developer experience and onboarding process How quickly customer issues are surfaced, understood, and translated into product improvements Whether customers unblock themselves within minutes or stall multimillion-dollar initiatives waiting for answers This role is foundational. If we fail at first-line technical support, nothing else works.