Software Engineer, Mobile
Build and maintain React Native mobile apps for iOS and Android at Upstart. Collaborate with product, design, and backend teams to deliver performant, scalable user-facing features that improve the borrower experience. Requires 4+ years experience and a Bachelor's degree.
About the job
How you’ll make an impact
- Build and maintain user-facing features in our React Native mobile apps across iOS (and Android, as we expand).
- Design and implement mobile components and subsystems that are performant, maintainable, and scalable across platforms.
- Collaborate with product and design teams to scope, implement, and launch features that align with user and business needs.
- Contribute to platform improvements, including tooling, testing strategies, CI/CD, and performance monitoring.
- Work with backend engineers to define mobile-specific APIs and improve client-server integration patterns.
- Identify and resolve performance or reliability issues in the mobile experience.
- Participate in code reviews, architecture discussions, and technical planning to raise engineering quality across the team.
- Support a strong mobile engineering culture through mentorship, collaboration, and a focus on continuous improvement.
Minimum Qualifications
- Bachelor’s degree in Computer Science, Engineering, or Mathematics, or a related field (or its equivalent) + 4 years of experience
- Experience building in React Native, and familiarity with at least one native platform (e.g., Swift/Objective-C for iOS or Kotlin/Java for Android).
- Understand mobile performance, memory management, and platform-specific constraints.
- Communicate effectively with cross-functional partners in product, design, and backend engineering.
- Take ownership of your work and are comfortable delivering complex features from planning through release.
- Balance speed and quality, and advocate for maintainable, scalable engineering solutions.
- Contribute to team culture and engineering practices through feedback, mentoring, and collaboration.
- Embrace a growth mindset and enjoy learning from others while helping teammates grow
Preferred Qualifications
- Helped launch or scale a React Native app on the Android platform.
- Comfortable working with TypeScript or custom native modules.
- Experience with mobile analytics, push notifications, deep linking, or A/B testing frameworks.
- Worked in a fast-paced product company where mobile was a primary user touchpoint.
- Contributed to internal tools, processes, or systems that improved mobile developer velocity or code quality.
Skills
React Native, iOS, Android, Swift, Objective-C, Kotlin, Java, TypeScript, Mobile Analytics, Push Notifications, Deep Linking, A/B Testing, CI/CD
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