Founding Engineer ($150k-$250k + Equity) at Generalcatalyst

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

Job Title

Founding Engineer

Salary

$150k-$250k \+ Equity

Company Description

Generalcatalyst.com is a $6M seed-funded YC S25 startup led by General Catalyst, building the essential identity and communication layer for AI agents. Backed by industry legends like Paul Graham and Dharmesh Shah, they are scaling rapidly, processing over 100M emails for a user base that doubles every two weeks.

Job Description

As a Founding Engineer, you will build the core primitives that allow AI agents to communicate and operate as independent entities. You'll design high-throughput email infrastructure and APIs, bridging cutting-edge LLM capabilities with foundational messaging protocols. This is a systems-heavy role where you'll own projects end-to-end for a rapidly scaling user base.

Location

San Francisco, USA

Why this role is remarkable

• Join as one of the first 10 employees at a YC S25 company defining a new category of infrastructure for the agentic era.
• Work alongside a world-class team from Optiver, NVIDIA, and Modern Treasury, backed by top-tier investors like General Catalyst and Paul Graham.
• Influence the fundamental design of how AI agents interact with the world, moving from 0 to 1 in a high-growth environment.

What You Will Do

• Design and implement high-performance, low-latency APIs and abstractions specifically tailored for AI agents rather than human end-users.
• Scale distributed systems and core infrastructure that currently processes hundreds of thousands of emails daily, aiming for massive future volume.
• Bridge the gap between modern AI capabilities and primitive communication protocols like email to create a seamless agent identity provider.

The ideal candidate

• Proven track record of shipping production software and managing core infrastructure at a high-growth tech company or startup.
• Strong backend and systems engineering instincts, with the ability to handle distributed systems, developer tools, or protocol-heavy messaging.
• Exceptional problem-solving skills and a high bar for quality, thriving in fast-paced environments where speed and detail are critical.

Who are Jack \& Jill?

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.

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.

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.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.