React Native Developer

Heymarket; San Francisco (CA); Hybrid; USD 120,000 - 190,000; Full time

Job summary

Heymarket in San Francisco is seeking a mobile engineer to design, build, and maintain high-quality React Native apps for Android and iOS. You will collaborate with a small team of engineers, product managers, and designers to deliver features end-to-end.

You will work with native bridges (Kotlin/Swift), own major features, and contribute to CI/CD pipelines and OTA updates, iterating based on user feedback.

Qualifications

• 3+ years of mobile app development experience.
• Strong proficiency in React Native and TypeScript/JavaScript.
• Experience with native Android (Kotlin) and iOS (Swift) for performance or bridge work.
• Ability to work in a small, collaborative team and own major features.

Responsibilities

• Develop, test, and deploy cross‑platform features for Android and iOS using React Native.
• Collaborate with engineers, product managers, and designers in a small team.
• Build and maintain native bridges for module integration on Android and iOS.
• Own major mobile features or releases and drive them to launch.
• Contribute to mobile CI/CD pipelines and OTA updates.
• Migrate existing native apps to React Native.

Skills

React Native

TypeScript/JavaScript

Ownership of features

Feedback-driven

Tools

Kotlin

Swift

Expo

Fastlane

Jest

Detox

Job description

Responsibilities:

• Participate in all phases of the software development lifecycle, from ideation and prototyping to deployment and iteration.
• Design, develop, and maintain high-quality mobile applications using React Native.
• Develop, test, and deploy features that run seamlessly on both Android and iOS platforms.
• Collaborate effectively with a small team, working closely with other engineers, product managers, and designers.
• Utilize native development expertise to build and maintain bridges for modules requiring deep platform integration in Android (Kotlin) and iOS (Swift/Objective C).
• Take ownership of major mobile features or releases, working with the team to ensure successful delivery and launch.
• Utilize qualitative and quantitative feedback to iterate on features and releases, driving continuous improvement.
• Implement and manage Over-the-Air (OTA) updates for rapid bug fixes and feature rollouts.
• Contribute to mobile-specific CI/CD pipelines.
• Drive the technical effort for migrating existing native Android and iOS applications to React Native.

Requirements:

• 3+ years of professional experience in mobile application development.
• Strong proficiency in React Native and TypeScript/JavaScript.
• Hands-on experience with native mobile development in Android (Kotlin) and iOS (Swift) for performance optimization or bridge development.
• Ability to work effectively in a small, collaborative team environment.
• Experience taking ownership of major features or releases and driving them to completion.
• Passion for iterating on features and releases based on user feedback.
• Strong problem-solving skills and attention to detail.

Preferred Qualifications:

• Familiarity with state management libraries (e. g., Redux).
• Working knowledge of CI/CD pipelines for mobile apps (e. g., Fastlane, Expo/EAS).
• Experience with testing frameworks (e. g., Jest, Detox).
• Knowledge of database systems and data modeling.