Matter Intelligence
Founding Fullstack Engineer (Generalist) - Known
Matter Intelligence, San Francisco, California, United States, 94199
Location
San Francisco
Employment Type Full time
Location Type On-site
Department Known Co
About the role You’ll work across the Known product surface: mobile features, web backend, and API integrations. You’ll 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
4+ 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.
Example Projects
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.
#J-18808-Ljbffr
Employment Type Full time
Location Type On-site
Department Known Co
About the role You’ll work across the Known product surface: mobile features, web backend, and API integrations. You’ll 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
4+ 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.
Example Projects
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.
#J-18808-Ljbffr