Founding Account Executive

We are looking for a Founding Account Executive with 4+ years of experience selling technical B2B products to help turn growing demand into revenue and build a repeatable sales motion at Moss (YC F25), the retrieval runtime powering real-time AI agents. You'll work directly with the Founder & CEO, own deals end-to-end, and play a critical role in shaping how the company sells as it scales. What will you be doing?

Own the full sales cycle from prospecting through close — including discovery, demos, pricing, negotiations, and procurement Build pipeline through targeted outbound, inbound qualification, and signals from developer/self-serve adoption Partner with engineering to run POCs, establish success criteria, and move evaluations toward buying decisions Expand accounts from initial use cases into more agents, workloads, and end customers Build and refine the sales playbook — improving qualification, messaging, and deal execution based on what you learn Key Requirements Proven track record selling technical B2B products (developer tools, APIs, AI infrastructure, or consumption-based products preferred) Ability to personally source and close deals, including navigating technical evaluations and multiple stakeholders Comfortable engaging developers, engineering leaders, and business buyers with equal credibility Strong deal structure discipline — clear qualification, stakeholder mapping, agreed next steps, and realistic close plans Thrives in early-stage environments where you're building the sales process while carrying a quota