About Arcade

We're the team behind PRJX, the #1 DEX on HyperEVM, which generated $5.4M revenue in year one with 2 full time people.

Now, we're pursuing the biggest opportunity in crypto.

The foundation of which is creating the best place to trade crypto (spot + perps) on your phone.

On top of that, we’re building a completely original social product with several novel mechanisms.

We’ll reveal more to promising candidates, but whatever you think it may be, think bigger.

The Role

Staff+ level · $180,000+ · significant equity

Stack. Expo ~54 · React Native · TypeScript · Reanimated · Privy · viem · Solana · Hyperliquid SDK · cross-chain routing and bridging · PostHog · Sentry. Skia, Swift, and Kotlin are a plus.

Details. Remote · NA/EU timezone ideal · Full-time · Primarily async

You're the first and only engineer in your domain. Your job is to take an original product vision and turn it into a robust system, holding the entire architecture and smallest details at once.

You will…

• Build the best mobile trading app in the world.

• Own the entire user experience.

• Keep the interface truthful under live market data.

• Hold 60fps on mid-range Android under sustained load.

• Automate weekly iOS and Android releases.

You have…

• Independently designed, implemented, and scaled a consumer mobile app.

• Extended React Native itself across new architecture, Hermes, JSI, and custom native modules.

• Built gesture-driven motion under concurrent state change.

• Delivered production trading interfaces spanning order entry, TP/SL, TWAP, perps, funding, and leverage.

• Implemented on-device key custody for embedded wallets, EIP-7702, SIWE, and cross-chain swaps.