As a Founding Engineer, you will build the primitives that allow AI agents to communicate, authenticate, and operate in the real world. You will design intuitive APIs and high-performance distributed systems, owning projects from 0 to 1 while processing hundreds of thousands of emails daily for a rapidly expanding user base.
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San Francisco, United States$150k - $250k + Equity
Founding Engineer at AgentMail - Identity and communication for AI agents
AgentMail is building the 'Gmail for AI Agents,' and they're looking for a Founding Engineer to join their San Francisco team. With user growth doubling every two weeks and a founding team from Optiver and NVIDIA, this is a rare chance to define the communication layer of the agentic web. If you love building high-performance distributed systems and want to own the identity primitives for the next billion internet citizens, this 0-to-1 role offers massive equity and the chance to solve problems no one else in Silicon Valley has cracked yet.
Overview
Role overview
Company
Generalcatalyst
Finance
AgentMail - High-growth infrastructure startup building the sole identity and communication layer for the AI agent era.
Responsibilities
What you will do
- Design and implement core backend infrastructure and APIs specifically optimized for AI agents as the primary end-users.
- Architect and scale low-latency distributed systems capable of processing high-volume communication and authentication requests.
- Lead end-to-end product initiatives from initial system design through to production rollout and customer feedback cycles.
Candidate profile
Who this is a fit for
- Technical Mastery: Proven experience shipping production-grade software and managing complex cloud infrastructure or distributed systems at a high-growth startup.
- Product Ownership: A 0-to-1 builder who obsesses over quality and is comfortable making critical decisions across the entire stack.
- Strategic Communicator: A clear thinker capable of articulating technical trade-offs and navigating the uncharted territory of agent-to-agent communication.
What makes it remarkable
Why this role is remarkable
- Unique Market Positioning: AgentMail is building the "Gmail for Agents," serving as the essential identity provider in a category set to outnumber human users.
- Elite Pedigree: Join a high-caliber founding team with deep expertise from top-tier firms including Optiver, NVIDIA, Amazon, and Modern Treasury.
- Extreme Growth: The company has doubled its user count every two weeks since January, offering rare early-stage momentum and massive equity upside.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
How does this work?
Jack's an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack's network.
If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
Jack