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Software Engineer, Mobile App

Crackajack Solutions

Salary not specified
Nov 10, 2025
Remote, US
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Build, test, and ship the first version of the App in React Native (Expo).

Requirements

  • 3+ years of experience building and shipping React Native apps (Expo or bare workflow).
  • Fluent in TypeScript, React, and modern React Native tooling (Redux Toolkit, Reanimated, etc.).
  • Strong understanding of API integration, concurrency, and async data flows in mobile environments.
  • Experience collaborating with design and backend teams on complex product surfaces.
  • Experience with HealthKit, CoreBluetooth, or wearable integrations.
  • Exposure to AI/LLM integration (OpenAI, LangChain, on-device inference).
  • Experience with secure data handling and HIPAA-compliant architectures.

Responsibilities

  • Build, test, and ship the first version of the App in React Native (Expo).
  • Write clean, maintainable TypeScript code that’s optimized for performance and reliability.
  • Collaborate closely with product and design to develop features end-to-end—from API design to UI polish.
  • Integrate third-party and internal APIs, health data systems (e.g., HealthKit), and AI-driven experiences using LLMs and on-device intelligence.
  • Establish engineering standards for code quality, testing, and CI/CD in a new mobile stack.
  • Continuously improve app performance, security, and scalability.

Other

  • Full Time
  • Mid Level
  • Demonstrated passion for creating exceptional user experiences — fast, elegant, and data-driven.
  • Background in health tech, data visualization, or biometric systems.
  • Contributions to open-source or notable personal projects.