Founding Fullstack Engineer - KnownMatter Intelligence • San Francisco, CA, United States
Founding Fullstack Engineer - Known
Matter Intelligence • San Francisco, CA, United States
2 days ago
Job type
- Full-time
Job description4+ years as a fullstack or frontend / backend engineer. Strong with TypeScript, React, React Native, Node.js. Experience with API design, integration, and scaling. Startup mindset : comfortable working across the stack and learning fast. Build mobile onboarding flow with AI-assisted profile setup. Integrate payments and reservations APIs for seamless date planning. Create personalized UI components powered by ML model outputs.
Location
San Francisco
Employment Type
Full time
Location Type
On-site
Department
Known Co
About the role
Youll work across the Known product surface : mobile features, web backend, and API integrations. Youll ship quickly, leverage AI coding tools (e.g. Cursor, Copilot), and help us deliver a polished, consumer-grade experience.
Responsibilities
- Build and iterate on mobile features with React Native.
- Extend and maintain backend APIs in Node.js / TypeScript.
- Integrate with third-party APIs (OpenAI / Anthropic, reservations, payments, messaging).
- Contribute to frontend components in React (web app).
- Collaborate with AI / ML engineers to expose model-powered features via APIs / UI.
Requirements
Example Projects
#J-18808-Ljbffr
Create a job alert for this search
Founding Engineer • San Francisco, CA, United States
Related jobs
Usul is redefining how companies and governments interact around the world.Our AI platform matches companies to government contract opportunities they are most likely to win – these companies make ...Show more
Notable is the leading intelligent automation company for healthcare.Customers use Notable to drive patient acquisition, retention, and reimbursement, scaling growth without hiring more staff.We ar...Show more
Tatari is on a mission to revolutionize TV advertising.We work with some of your favorite disruptor brands—like Calm, Vuori, Rocket Money, and hundreds more—to grow their business using linear and ...Show more
Our mission is to bring pharmacies into the future by building a convenient and easy-to-use service that supports pharmacists and empowers patients.
We are a fast-growing, technology-first startup d...Show more
Healthcare providers go into medicine to care for people, but end up losing valuable time each day to admin work and other workplace challenges.
Time that could otherwise be spent helping patients.A...Show more
Headquartered in Silicon Valley, we are a newly established start-up, where a collective of visionary scientists, engineers, and entrepreneurs are dedicated to transforming the landscape of biology...Show more
Onyx is a popular open source project with hundreds of thousands of users.The project has over 10K stars and over 3K community members across Slack and Discord (these stats may already be out of da...Show more Tatari is on a mission to revolutionize TV advertising.We work with some of your favorite disruptor brands—like Calm, Vuori, Rocket Money, and hundreds more—to grow their business using linear and ...Show more 
Build a safer world with us, one incident at a time.AI-powered physical security platform helping the world’s leading enterprises reduce risk, improve operational efficiency, and gain critical insi...Show more
AI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge.
Our team is small, highly motivated, and focused on engineering excelle...Show more
Plaud is building the world's most trusted AI work companion for professionals to elevate productivity and performance through note-taking solutions, loved by over 1,000,000 users worldwide since 2...Show more
This role is for one of the Weekday's clients.AI that continuously creates and tests new in-app experiences.Our mission is to automate the end-to-end process of generating and experimenting with pr...Show more
Traditional credit systems are designed for people who already have money, creating barriers for those in need—over 1.Many individuals, such as a vendor in Lagos earning daily cash or a Colombian n...Show more
We are looking for a founding full-stack engineer to take ownership of building core product features end-to-end — from interactive 3D rendering in the browser, to generative layout algorithms, to ...Show more Healthcare providers go into medicine to care for people, but end up losing valuable time each day to admin work and other workplace challenges.
Time that could otherwise be spent helping patients.A...Show more 
Coactive makes it easy to search, filter, and analyze visual content.Increasingly image and video data captures the content we watch, the products we buy, and the work we do, and already represents...Show more
Familiarity with blockchain technology and smart contract development is a bonus.Strong understanding of REST APIs, database design, and web security.
Proven ability to write clean, scalable, and ef...Show more
NewsBreak is redefining the way users interact with local news and their communities.By bridging local users, local content creators, and local businesses, our mission is to foster safer, more vibr...Show more
Founding Fullstack Engineer
Usul • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Senior Fullstack Engineer
Notable • San Mateo, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Senior Fullstack Engineer
Tatari • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Senior Fullstack Engineer
Nimblerx • Redwood City, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Fullstack Engineer, Ambient AI
Commure + Athelas • Mountain View, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Full Stack Engineer
GenBio AI • Palo Alto, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Fullstack Engineer
Onyx • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Fullstack Engineer
Tatari • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Software Engineer, Fullstack
Ambient.ai • Redwood City, California, United States
Full-time
Last updated: 7 hours ago • Promoted • New!
Fullstack Engineer - Grok Experiments
Xai • Palo Alto, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Founding Full Stack Engineer
Plaud Ai • San Francisco, California, United States
Remote
Full-time
Last updated: 30+ days ago • Promoted
Founding Full-Stack Engineer
Weekday Ai • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Founding Fullstack Engineer
Second Renaissance • San Francisco, CA, United States
Full-time
Last updated: 30+ days ago • Promoted
Founding Full Stack Engineer
Dream Technologies • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Fullstack Engineer, RCM
Commure + Athelas • Mountain View, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Senior Full Stack Engineer
Coactive Ai • San Jose, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Fullstack Engineer, Blockchain -
Yeah! Global • San Francisco, California, United States
Full-time
Last updated: 30+ days ago • Promoted
Software Engineer, Full-stack
Newsbreak • Mountain View, California, United States
Full-time
Last updated: 30+ days ago • Promoted