AI/ML Engineer ($250K–$400K + Equity) at Known

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: AI/ML Engineer

Salary: $250K–$400K + Equity

Company Description: Known - $10M seed-funded consumer AI startup building a voice-first matchmaker

Job Description:
You will own the core matchmaking, recommendation, and ranking systems from zero to production scale. As an early engineer, you will shape the algorithm that defines how users find connection, moving beyond swiping to a high-intent, single-match experience. You'll work directly with founders from Uber and Cash App in San Francisco.

Location: San Francisco, USA

Why this role is remarkable:

• Impact a core product where the recommendation engine is the entire user experience, achieving an 80% date-success rate in early beta.

• Join a high-caliber team backed by $10M from top-tier investors including Forerunner Ventures, NFX, and Pear VC.

• Work in person in Cow Hollow, SF, with founders who have previously scaled AI products at Uber, Cosmos, and Faire.

What you will do:

• Design and implement the end-to-end matchmaking and ranking architecture that powers the voice-first user experience.

• Scale production systems from early-stage San Francisco beta to millions of global users while maintaining high-quality personalization.

• Lead and grow a small technical team as the company expands its engineering footprint following its recent seed round.

The ideal candidate:

• Proven track record building and scaling user-facing recommendation or matching algorithms at a high-growth consumer company (e.g., Tinder, Instagram, Spotify).

• Early-stage veteran who has joined a startup during its 0→1 phase and stayed to see their systems reach significant production scale.

• Technical leader who has experience growing small teams and is passionate about solving deep personalization challenges for end-users.

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.