Plasma is hiring a Senior Fullstack Mobile Product Engineer to join its founding product team. You will build consumer-facing mobile applications that make stablecoin transfers feel seamless and familiar. This role is primarily focused on mobile and frontend development, with secondary responsibilities in backend services and blockchain integration.

What You'll Do

Design and develop mobile applications using React Native and Expo, with a focus on performance, responsiveness, and motion design
Build responsive web applications and reusable UI components for stablecoin wallets, transaction flows, and financial interactions
Ensure consistency and quality across iOS and Android platforms through testing, polish, and design collaboration
Develop and maintain mobile-first design systems in close partnership with product and design teams
Integrate mobile apps with backend services and blockchain infrastructure to enable secure wallet functionality and real-time updates
Build APIs for mobile clients and implement transaction signing, balance updates, and error recovery logic
Drive product quality through testing strategies, continuous delivery practices, and attention to UX detail

What We're Looking For

5+ years of experience in fullstack and mobile development
Deep expertise in React Native and modern JavaScript frameworks
Proficient in TypeScript
Strong experience using Expo and deploying mobile apps to iOS and Android platforms
Skilled in state management tools such as Redux, MobX, or Zustand
Strong eye for design, with a track record of delivering polished, intuitive mobile user experiences
Comfortable working across the stack, with backend experience in Node.js and API integration (REST and GraphQL)
Experience building real-time features using WebSocket or similar technologies
Experience with mobile wallet security, such as biometric authentication, and secure key storage
Understanding of mobile-specific blockchain challenges, such as WalletConnect integration and deep linking
Experience optimizing React Native apps for performance
A high degree of ownership and product intuition, with a focus on quality, performance, and reliability