Senior AI Software Engineer, Internal Enablement

About Extend: Extend is revolutionizing the post-purchase experience for retailers and their customers by providing merchants with AI-driven solutions that enhance customer satisfaction and drive revenue growth. Our comprehensive platform offers automated customer service handling, seamless returns/exchange management, end-to-end automated fulfillment, and product protection and shipping protection alongside Extend's best-in-class fraud detection. By integrating leading-edge technology with exceptional customer service, Extend empowers businesses to build trust and loyalty among consumers while reducing costs and increasing profits. Today, Extend works with more than 1,000 leading merchant partners across industries, including fashion/apparel, cosmetics, furniture, jewelry, consumer electronics, auto parts, sports and fitness, and much more. Extend is backed by some of the most prominent technology investors in the industry, and our headquarters is in downtown San Francisco. About the Role: We are hiring a Senior AI Software Engineer to change the way we work with AI across the whole company. Extend thinks AI has reached a level of usefulness and sophistication that we are preparing to build coding tools for all the non-engineering roles in the company. We want you to be part of the team that provides the engineering rigor to make this platform reliable, secure, and easy to use. Over the next six months we are standing up MCP connectors to the systems we run on, a shared library of agent skills every team composes from, and the infrastructure that turns a one-off prototype into durable tooling. You will build that platform — and the security model it ships with. Credentials vended to agents, code generated by LLMs and executed locally, connectors bridging internal systems to third-party applications and systems: every connector and skill you ship has to be secure by default, because there is no security escort coming behind you. What You'll Do: Design and ship secur