More jobs:
Fullstack Engineer
Job in
San Francisco, San Francisco County, California, 94199, USA
Listed on 2026-01-01
Listing for:
Matter Intelligence
Full Time
position Listed on 2026-01-01
Job specializations:
-
Software Development
React.js, Web Developer
Job Description & How to Apply Below
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
• 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 Type Script, 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.
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