Demo

Founding Applied AI Engineer

Jack & Jill
San Francisco, CA Full Time
POSTED ON 1/25/2026 CLOSED ON 2/17/2026

What are the responsibilities and job description for the Founding Applied AI Engineer position at Jack & Jill?

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 Applied AI Engineer


Company Description: Well-funded legal tech SaaS


Job Description:

You will join as a founding engineer to help transform the trillion-dollar legal industry using generative AI. Working closely with the CTO, you will own the development of core product features and machine learning buildouts. This is a high-ownership, demanding role designed for engineers who want to scale a startup from the ground level.


Location: San Francisco, USA & London, UK


Why this role is remarkable:

  • Join a founding team at an early-stage startup that has achieved 50X revenue growth in its first year.
  • Backed by top-tier VCs and already beating established incumbents in enterprise-level pilot competitions.
  • Rare opportunity to work directly with the CTO and gain exposure to the full lifecycle of scaling an AI product.


What you will do:

  • Build and deploy complex, production-ready machine learning models to automate document review and negotiation.
  • Work across the full stack to deliver customer-facing features and deep technical infrastructure.
  • Own end-to-end tasks with high autonomy, from initial conceptualization to deployment and iteration.


The ideal candidate:

  • Exceptional computer science fundamentals and experience training machine learning models for production use cases.
  • High personal agency and a ""gritty"" mindset, comfortable with fast-paced, self-directed work environments.
  • Ability to reason clearly about complex system failure modes and maintain high attention to detail.


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.

Salary.com Estimation for Founding Applied AI Engineer in San Francisco, CA
$86,829 to $104,857
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Founding Applied AI Engineer?

Sign up to receive alerts about other jobs on the Founding Applied AI Engineer career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$101,387 - $124,118
Income Estimation: 
$119,030 - $151,900
Income Estimation: 
$77,900 - $95,589
Income Estimation: 
$101,387 - $124,118
This job has expired.
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Jack & Jill

  • Jack & Jill San Francisco, CA
  • 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 ... more
  • 3 Days Ago

  • Jack & Jill San Francisco, CA
  • 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 ... more
  • 3 Days Ago

  • Jack & Jill York, NY
  • 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 ... more
  • 4 Days Ago

  • Jack & Jill San Francisco, CA
  • 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 ... more
  • 4 Days Ago


Not the job you're looking for? Here are some other Founding Applied AI Engineer jobs in the San Francisco, CA area that may be a better fit.

  • Faction San Francisco, CA
  • We're looking for a high-trajectory SWE to build the AI agents that will automate how $2T of industrial goods move through the supply chain. Our AI agents ... more
  • 18 Days Ago

  • Weekday (YC W21) San Francisco, CA
  • Job Summary You’ll build the next generation of production-grade AI systems—agents that reason, act, and operate reliably in messy, real-world environments... more
  • 20 Days Ago

AI Assistant is available now!

Feel free to start your new journey!