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