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

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: AgentMail - High-growth infrastructure startup building the sole identity and communication layer for the AI agent era.

Job Description:
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.

Location: San Francisco, USA

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.

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.

The ideal candidate:

• 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.

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.

Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

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.