Founding Engineer at Quest AI

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.

Founding Engineer

Company Description:
Well-funded consumer AI startup

Job Description:
You will join as a founding engineer to build a proactive AI mentor that understands users deeply through digital footprints. This role involves solving complex problems in psychological profiling, memory architecture, and adaptive interfaces. You will work directly with repeat founders in San Francisco to ship a generational product that pushes human growth.

Location: San Francisco, USA

Why this role is remarkable:

• Work directly with repeat founders who previously led AI agent teams at Google and successfully exited their first startup.
• Tackle unsolved technical challenges like long-term compounding AI memory and proactive agentic behavior beyond simple chatbots.
• Join a small, elite team with high ownership, offering significant equity and the chance to define a new category of consumer technology.

What you will do:

• Architect a sophisticated memory system that uses digital footprints to build deep psychological profiles of users.
• Design and implement a morphing UI that personalizes the entire interface experience based on individual user needs and behaviors.
• Build and maintain robust evaluation frameworks to measure real-world behavior change and ensure the AI provides meaningful mentorship.

The ideal candidate:

• A strong generalist engineer who has a proven track record of shipping production-ready systems and finishing complex side projects.
• Experience building with LLMs and agents, with a deep understanding of memory orchestration, tool use, and reliable AI behavior.
• A product-minded, autonomous builder who thrives in fast-paced environments and is excited to use AI tools to accelerate their own workflow.

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.