Senior Mobile Engineer — React Native & Expo (Cards)

Socket.dev; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Socket.dev is seeking a skilled Mobile Engineer to own features in React Native and Expo, from design discussions through launch and iteration. You will champion performance, polish, and a native feel, going beyond UI to native modules as needed.

You will collaborate with backend teams on API design, ensuring robust data models and high reliability. This role emphasizes ownership, architecture, and enabling teammates to move quickly without sacrificing quality.

Qualifications

• Experience in mobile app development, end-to-end ownership from design to launch.
• Strong understanding of device behavior and performance considerations.
• Ability to debug complex platform interactions beyond the UI layer.

Responsibilities

• Build and own core features in React Native and Expo, from design through launch and iteration.
• Focus on motion, transitions, performance, and polish to deliver a native feel.
• Delve into native modules and platform APIs when needed to solve hard problems.
• Collaborate with backend engineers on API design and data modeling, ensuring client performance.
• Own reliability: startup time, frame rate, crash-free sessions.
• Set patterns and architecture that enable faster, safer future work.

Skills

React Native

Expo

Mobile engineering

Performance optimization

Debugging

Tools

Xcode

Android Studio

Git

Job description

Socket.dev is seeking a skilled Mobile Engineer to own features in React Native and Expo, from design discussions through launch and iteration. You will champion performance, polish, and a native feel, going beyond UI to native modules as needed.

You will collaborate with backend teams on API design, ensuring robust data models and high reliability. This role emphasizes ownership, architecture, and enabling teammates to move quickly without sacrificing quality.