Known — Product Engineer, Mobile

Type: Full-time | On-site | San Francisco, CA (Cow Hollow) Compensation: $150,000–$200,000 + Competitive equity Hiring count: 1 Visa sponsorship: None available Reports to: Founding team (works directly with founders; intake notes reference "Aden")

Known is an AI matchmaker that talks to users and supports them like a friend, with a mission to empower humanity by applying general intelligence to human connection. Users join by telling Known their life story through an AI voice agent — new users average 27 minutes of conversation — giving Known an unusually intimate context for real matches. Launched February; the release video drew 2M views on Twitter, 10,000 people signed up in San Francisco in the first days, and concurrency crashed the infrastructure. The team has since hardened the platform and is rolling out paid live dates to a wider population.

Founded: 2025 | Team size: 1–10 (Seed) | Total funding: $10M seed (raised November) Industry: AI Tools / consumer AI Website: knowndating.com Office: Cow Hollow, San Francisco (in-person) Backers: Forerunner Ventures (Eurie Kim and Kirsten Green — behind Decagon, Faire, Oura), NFX, Pear VC Stage note: Raising Series A in the next six months.

• Novel technical core: Real-time AI voice and audio features at the heart of a consumer product — a genuinely new challenge, not CRUD.
• Proven demand: 2M-view launch, 10,000 SF signups that crashed the app on day one, now expanding into paid live dates with a Series A on the horizon.
• Craft-led culture: The goal is to be "the Apple of dating" — Apple-level design standards, high autonomy, working directly with the founding team.
• Strong backing & pedigree: $10M seed from Forerunner, NFX, and Pear VC; founding engineers who built Uber, Uber Eats, Afterpay, and Cash App.

No intake transcript on the role page (an Intake Video is present but not transcribed). Points below are drawn from the role body and notes.

• Single most important signal: 2–6 years of production React Native experience — RN as the primary mobile framework, not React web reframed as RN.
• Must have shipped and maintained an RN app to both iOS and Android in production.
• Complex audio/voice feature experience is a strong differentiator and directly relevant to Known's core product.
• Looking for high agency, design-conscious, user-obsessed builders who don't wait for specs.
• Per Aden: even one strong internship or junior year at an RN-based startup is a good starting block.
• Role is strictly in-person in San Francisco; in-person culture is core to how the team works.

A React Native mobile engineer to own and elevate the Known app end-to-end across iOS and Android, building complex audio and voice features that make the experience feel distinctly human.

• →Own and elevate the Known mobile app end-to-end in React Native across iOS and Android
• →Build complex audio and voice features that make the experience feel human and intentional
• →Take products from concept to production with a high degree of autonomy and ownership
• →Work directly with the founding team on architectural and product decisions
• →Steward the quality and craft of a consumer product held to Apple-level design standards
• →Contribute to the platform as Known scales from hundreds of users to millions

Tech stack: React Native (iOS & Android); complex audio/voice features; full-stack capability to take features end-to-end. Broader product: personalized voice-AI system with a full data pipeline (STT + sentiment ingestion, in-house LLM for compatibility modeling and dynamic introductions), agentic chat with integrations (reservations, Uber, calendar).

• Work in-person in San Francisco, CA
• 2 to 6 years production React Native experience, required
• Has shipped a React Native app to both iOS and Android in production
• Consumer mobile app experience at a startup or unicorn
• Complex audio or voice feature experience strongly preferred
• High agency, detail-oriented, product-obsessed

• Production React Native experience at a company where RN was the primary mobile framework, Discord, early Airbnb, early Instacart, Shopify, or equivalent, this is the clearest signal of fit
• Background from companies like Uber, Uber Eats, Afterpay, or Cash App
• Has shipped a cross-platform app to both iOS and Android simultaneously in React Native, not just React web
• Consumer product background at a company that went through significant scale, understands architectural decisions made under pressure
• Has built or contributed to complex audio or voice features in a mobile context, directly relevant to Known's core product
• Even one strong internship or junior year at an RN-based startup is a good starting block per Aden
• Detail-oriented and design-conscious, cares about how the product feels, not just whether it works

• React web experience being sold as equivalent to React Native
• Swift or native iOS only, no cross-platform experience, Known needs both Android and iOS
• No production mobile app experience, only web or side projects
• Low agency, needs heavy direction or a defined task queue to be productive
• Not willing to be in person in San Francisco, in-person culture at the Cow Hollow office is core to how Known works

Salary$150,000–$200,000EquityCompetitiveOn-site policyIn-person, Cow Hollow, San FranciscoVisa sponsorshipNone availableEmployment typeFull-timeLocationSan Francisco, CA

No dedicated call-stage screening questions are listed on the role page. The Contrario submission form carries the following Required Candidate Q&A:

1. LinkedIn URL
2. Will you now or in the future require sponsorship (e.g., a work visa) to work in the United States?

Stage 1 — Pending Approval — Contrario/internal approval. Stage 2 — Intro Call — Initial conversation. Stage 3 — [Fullstack] Technical Round 1 — Technical assessment. Stage 4 — [Fullstack] Founder Conversation — Conversation with the founding team. Stage 5 — [Fullstack] Onsite — In-person onsite. Stage 6 — Offer Extended Stage 7 — Candidate Hired — Candidate accepts and starts.

No dedicated "Ideal Companies" card on the role page — companies below are drawn from Green Flags and the role body, for reference. RN-primary / clearest fit — Discord, early Airbnb, early Instacart, Shopify Consumer at scale — Uber, Uber Eats, Afterpay, Cash App

For reference only — do not source these specific profiles. Marked DO NOT CONTACT on the role page. David Hahn — LinkedIn link present on the role page (URL not captured in the page source)

• None recorded on the role page.