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About the Role
You'll be building Rips, our fast-growing mobile collectibles trading card app, which is built on React Native and Expo. This role requires a focus on correctness, latency, and polish, as users trade real value within the app. You will own significant product surface area from day one, including end-to-end features, interaction quality, and technical decisions.
Responsibilities
- Build and own core product features in React Native and Expo, from design discussion through launch and iteration.
- Prioritize user experience, including motion, gesture, transitions, perceived performance, and small details.
- Address complex technical challenges by going below the abstraction layer, including native modules, platform APIs, rendering behavior, and build configuration.
- Collaborate with backend engineers on API and data model design, providing constructive feedback.
- Own the performance and reliability of shipped features, focusing on startup time, frame rate under load, and crash-free sessions.
- Establish best practices and patterns to improve team efficiency and clarity for future feature development.
Requirements
- Strong mobile engineering background.
- Experience with React Native and Expo is ideal.
- Native iOS or Android engineers looking to transition to React Native are also encouraged to apply.
- Demonstrated ownership of consequential work, including design, shipping, and ongoing maintenance of features.
- Deep understanding of mobile platforms and device-level operations.
- Ability to debug issues beyond framework explanations.
- Strong sense of craft and ability to implement desired interaction feel.
- Proven track record of creating leverage through architecture and guardrails.
- Ability to articulate and defend technical direction.
- Fluency with AI as a tool for development, with the ability to explain all code shipped.
- Willingness to work in person at the San Francisco headquarters.
Skills
- React Native
- Expo
- Mobile Engineering
- iOS
- Android
- Native Modules
- Platform APIs
- Performance Optimization
- Reliability Engineering
- AI as a development tool
Location
- San Francisco
Work Type
- Onsite
- Full-time
Experience Level
- Mid level
- Senior
About the Company
- Rips is a fast-growing collectibles trading card app.