As a Senior React Native Engineer, you will own the entire mobile surface area of a voice-first AI product. You'll solve complex audio engineering challenges and craft premium, native-feel interactions that benchmark against Apple-grade quality. Joining an elite team from Uber and Cash App, you'll apply general intelligence to revolutionize human connection.
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Senior React Native Engineer at Known
Join Known, the AI-powered matchmaker backed by Forerunner Ventures, to redefine consumer social through voice AI. We are looking for a Senior React Native Engineer to own our mobile surface and tackle complex audio challenges. This isn't another swipe-based app; it's a premium, craft-heavy product where users have 27-minute conversations with AI. If you've shipped high-quality mobile products at places like Discord or Tinder and want to build the next generation of human connection in the heart of San Francisco, this is your seat.
About this role
Role overview
About the company
Known is a matchmaker that talks to users and supports them like a friend. Our mission is to empower humanity by applying general intelligence to human connection.
Users join Known by telling us their life story. On average, our new users talk to our AI voice agent for 27 minutes, giving us a uniquely intimate multi-modal data set.
We are a team of engineers who’ve created some of the most widely used AI-driven consumer products including Uber Eats, Uber, Faire and Afterpay.
We love to work hard, with a high degree of autonomy and ownership. We work together in Cow Hollow, San Francisco.
How It Works: On Known, who you see is intentional by design.
There's no feed to scroll. No feeling that someone better is one profile away. It starts with a conversation with Known. Understanding who you are, how you live, and what you're actually looking for. You're introduced to one person at a time, guided by what Known learns about you. Your profile is created for you, dynamically. It evolves as Known gets to know you better. When you're curious about someone, you can ask Known questions. The things you'd normally wonder but never quite know. When interest is mutual, Known takes care of what's next. Schedules are coordinated. The venue is chosen. And the date is set. Less scrolling. More
What you'll do
What you will do
- Own the full mobile surface including voice interaction flows, matching UX, and real-time state management.
- Solve complex audio engineering problems such as streaming, silence detection, and graceful degradation for voice AI.
- Collaborate deeply with design to translate high-fidelity intent into fluid animations and gesture-responsive interfaces.
Who you are
Who this is a fit for
- Extensive experience shipping high-quality React Native consumer products where mobile craft and performance were existential to retention.
- Deep technical background in audio, voice, or real-time media features like WebRTC, recording, and streaming playback.
- Proven track record as an early engineer (employee 1-30) at growth-stage companies like Clubhouse, Discord, or Tinder.
Why this role
Why this role is remarkable
- Work on a genuinely novel voice-first interaction paradigm where users engage in 27-minute average conversations with AI agents.
- Join a high-growth startup backed by top-tier investors including Forerunner Ventures (Decagon, Oura), NFX, and Pear VC as they approach Series A.
- High-autonomy environment in Cow Hollow, SF, collaborating with an elite engineering team from Uber, Afterpay, and Cash App.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.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.
I recruit from Jack’s network and make the intro when I spot a great match.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.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
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.