Staff Software Engineer, Platform

Summary

Join Gemini, a global crypto and Web3 platform, as a Staff Software Engineer specializing in mobile development using React Native. You will play a key role in modernizing Gemini's mobile stack, establishing best practices, and improving app performance. Responsibilities include driving architectural decisions, automating processes, collaborating on cross-functional projects, and ensuring security standards are met. This position requires significant experience in mobile development with React Native and related technologies. The role is hybrid, requiring in-person presence twice a week in either Seattle, WA or New York City, NY. Gemini offers a competitive compensation and benefits package, including a discretionary annual bonus, equity grant, comprehensive health plans, 401k matching, paid parental leave, and flexible time off.

Requirements

• 8+ years of experience in mobile development, including 4+ years with React Native, building scalable mobile applications
• Proficient in JavaScript/TypeScript and native mobile development (Swift/Objective-C and/or Java/Kotlin)
• Expertise in React Native, navigation libraries (especially React Navigation), lifecycles, state management, and performance optimization
• Demonstrable experience in debugging, framework migrations, refactoring, and adopting mobile best practices
• Familiarity with CI processes (e.g., GitHub Actions) and automated testing (unit, integration, and end-to-end)
• Knowledge of mobile best practices and stay informed about innovations in the mobile industry and have the ability to bring in adoption for the same
• Deep understanding of engineering excellence, operational excellence, and data-driven decision-making
• Strong collaboration skills and ability to prioritize effectively in dynamic environments

Responsibilities

• Drive architectural decisions that modernize our mobile stack, ensuring scalability and maintainability
• Establish and automate best practices in mobile development, focusing on code quality, reliability, and performance
• Lead the initiatives to architect solutions to improve the performance of the mobile application
• Monitor app performance and identify and debug performance-related issues using observability tooling
• Collaborate and lead on scoping, planning and executing on cross-functional projects that benefit the client application
• Implement solutions that further the improvement of developer experience with app architecture that scales and is reliable
• Work closely with relevant stakeholders for the mobile client to execute on architectural rollout strategies
• Play a key role in technical evaluation of potential tools, libraries and vendor contracts
• Ensure that the mobile app adheres to security standards and compliance requirements

Preferred Qualifications

• Experience working on a Platform team
• Experience in migrating to React Native’s New Architecture
• Experience working with Expo Native Modules API and Expo updates
• Experience working in animation libraries like Reanimated and/or Skia
• Knowledge of crypto and/or blockchain
• Experience in implementing shared codebases between web and mobile

Benefits

• Competitive starting salary
• A discretionary annual bonus
• Long-term incentive in the form of a new hire equity grant
• Comprehensive health plans
• 401K with company matching
• Paid Parental Leave
• Flexible time off