Founding Mobile Engineer (React Native)

Whip (by Tensorfuse) is a social platform where anyone can create and share mini apps in seconds. We're backed by Y Combinator, and building at the intersection of AI and consumer social.

As a founding mobile engineer, you'll own the core app experience that millions of creators will use to build, share, and discover mini apps. This is not a "build screens from Figma specs" role. This is a "make the app feel magic" role.

What You'll Do

Build and ship the Whip mobile app in React Native across iOS and Android. You'll own critical surfaces like the mini app runtime, feed, creation flow, and sharing experience. You'll work directly with the founders and the founding designer to move from idea to shipped feature in days, not sprints. You'll make architectural decisions that define how the app scales. You'll obsess over performance, animation smoothness, and interaction feel — because in a consumer app, 200ms of jank is the difference between delight and deletion.

Who You Are

You're a builder who ships fast and cares deeply about craft. You've built React Native apps that real people use and love. You understand that consumer mobile is a different game — every frame matters, every transition matters, every tap target matters. You're comfortable going deep into native modules when React Native isn't enough, and you have opinions about state management, navigation patterns, and how to make a WebView not feel like a WebView.

Required Qualifications

2+ years building production React Native apps (not just Expo demos)
Deep understanding of React Native internals: bridge, JSI, Fabric, new architecture
Experience with smooth animations using Reanimated and Gesture Handler
Ability to write native modules in Swift/Kotlin when the JS layer isn't enough
Strong understanding of mobile performance profiling and optimization
Experience integrating WebViews with tight native-to-web communication
Familiarity with real-time features: feeds, notifications, live updates
Comfort with fast iteration cycles — you ship daily, not quarterly
Solid fundamentals in TypeScript and modern React patterns

Nice to Have

Experience building consumer or social apps with high DAU
Familiarity with mini app or plugin architectures (WebView sandboxing, JS runtimes)
Experience with OTA updates (CodePush or similar)
Understanding of content-driven feeds and recommendation surfaces
Contributions to open source React Native libraries
Previous startup experience or founding engineer background
Experience with AI-assisted development workflows

How to Apply

Send us a link to an app you've built — on the App Store, Play Store, or a video demo. Walk us through the hardest technical problem you solved in it. Show us your code if you can. That matters more than a resume.

About the company

The future of AI is inference

With the rise of agentic workflows and reasoning models, enterprises now need 100x more compute and 10x more throughput to run state-of-the-art AI models. Building robust, scalable inference systems has become a top priority—but it's also a major bottleneck, requiring deep expertise in low-level systems, snapshotters, Kubernetes, and more.

Tensorfuse removes this complexity by helping teams run serverless GPUs in their own AWS account. Just bring:

Your code and env as Dockerfile
Your AWS account with GPU capacity

We handle the rest—deploying, managing, and autoscaling your GPU containers on production-grade infrastructure. Teams use Tensorfuse for:

Developer Experience: 10x better than current solutions, helping you move fast and save months of engineering time.
Seamless Autoscaling: Spin up 100s of GPUs in real time with startup times as low as 30 seconds (vs. 8–10 mins with custom setups).
Security: All workloads run inside your own AWS VPC—your data never leaves your account.
Production Features: Native CI/CD integration, custom domain support, volume mounting, and more—out of the box.

We’re building the runtime layer for AI-native companies. Join us.

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