What are the responsibilities and job description for the Senior React Native Engineer at Known 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.
Senior React Native Engineer at Known - AI-powered matchmaking startup
Company Description:
Known - AI-powered matchmaking startup backed by Forerunner Ventures
Job Description:
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.
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.
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.
The ideal candidate:
- 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.
Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI Career Agent 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.