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Senior React Native Developer

Johnson Service Group Inc.
Be an Early ApplicantContractseniorHybrid
Malvern, Pennsylvania, USPosted March 20, 2026

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JavaScriptTypeScriptReactGitHub ActionsGitHubCI/CDSDK

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Job Description

Our client is seeking a Senior React Native Developer responsible for building scalable cross-platform mobile applications and leading the adoption of React Native within a large-scale native iOS and Android ecosystem while optimizing performance and enabling collaboration across multiple engineering teams.(Hybrid, PA or NC)

Must Have skills

  • React Native development for cross-platform mobile applications
  • TypeScript for scalable and maintainable mobile codebases
  • Integration of native iOS and Android modules (brownfield approach)
  • Mobile performance optimization (startup time, memory usage, frame-rate stability)
  • UI implementation and state management for mobile applications
  • Integration of third-party SDKs and platform-specific configurations

Nice to have skills

  • Experience leading React Native adoption within large mobile engineering organizations
  • React Native for Web development
  • Cross-platform design systems and shared component libraries
  • Expo SDK and EAS Build/Submit/Update workflows
  • CI/CD pipelines and automation (GitHub Actions, EAS Build)
  • Mobile app distribution platforms (TestFlight, Google Play Console)

Responsibilities

  • Lead the adoption and integration of React Native within an existing native mobile ecosystem.
  • Design and develop high-performance, scalable mobile features across iOS and Android platforms.
  • Collaborate with product managers, designers, and backend engineers to deliver intuitive mobile experiences.
  • Optimize mobile application performance including startup time, bundle size, memory usage, and responsiveness.
  • Contribute to the evolution of mobile architecture, tooling, and cross-platform frameworks.
  • Mentor junior and mid-level engineers and promote best practices across mobile teams.

Additional information

  • Extensive experience developing cross-platform mobile applications using React Native.
  • Strong proficiency with TypeScript and modern JavaScript development practices.
  • Experience bridging native modules and platform-specific mobile configurations.
  • Ability to build and maintain scalable frameworks within large mobile ecosystems.
  • Experience working with large mobile development organizations and multiple feature teams.
  • Familiarity with CI/CD pipelines, automated release pipelines, and mobile distribution platforms.
  • Hands-on experience with Expo SDK, EAS workflows, and OTA delivery mechanisms.
  • Strong collaboration skills and ability to work effectively in hybrid and distributed teams.
  • Proven ability to take ownership of projects from concept to delivery in fast-paced environments.

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