Senior Product Developer

Job Description
Sr. Software Engineer (Fullstack)
Role details
Salary: $200K - $400K
On-site work policy: In-office 5 days/week in San Francisco, CA
Full-time position
Location: San Francisco, CA
Tech stack: React, TypeScript, JavaScript
Equity: Competitive equity
What You’ll Do
Establish our web platform, setting the foundation and standards for how we build future web and Android apps.
Ship Rips on web, building on existing backend systems and APIs.
Set the technical foundation for our web platform: architecture, state management, build tooling, component patterns, testing strategy, and the standards that keep quality high as the team grows.
Own the user experience, not just the implementation. Motion, micro interactions, responsive behavior, and load performance are yours to get right.
Partner with backend engineers on API and data model design.
You'll push back when a contract makes the client worse.
What We're Looking For
Five or more years building consumer web products, with React, TypeScript, HTML, CSS, & Javascript expertise.
A real track record of 0 to 1. You've built something significant from an empty repository and watched it survive contact with users and with other engineers.
Genuine command of web fundamentals. You understand the browser: the DOM, the event loop, rendering and layout, CSS at a level beyond utility classes. Framework knowledge on top of a shaky foundation isn't what we need.
Ownership of consequential work, not adjacent work. Tell us about the system you designed and shipped, not the test coverage you raised.
Craft. You take pride in how something is built and how it feels to use, and you can hold both at once.
Direction setting. You articulate a technical approach, defend it, and change your mind when someone makes a better argument. Senior here means people follow your lead because the reasoning is sound.
Fluency with AI as a tool, never as a substitute for understanding. You use it aggressively and you can explain every line that ships under your name.
Required: 5+ years of experience in fullstack web engineering,​ with focus on React and TypeScript
Work experience
Required: Owned frontend platform/standards for a consumer-​facing web app
Hard skills
Required: Deep expertise in React and TypeScript (modern patterns,​ hooks,​ performance)
Required: Built polished UI with motion/animations and pixel-​perfect Figma implementation
Miscellaneous
Required: Demonstrated ability to self-​prioritize and ship fast in ambiguous,​ high-​agency environments
Nice-to-have
Work experience
Nice to have: Experience in real-​time features,​ payments,​ or consumer gaming apps

Work arrangement
Yes