Senior Software Engineer III (React Native)

GeekyAnts is a design and development studio that specializes in building solutions for web and mobile that drive innovation and transform industries and lives. They hold expertise in state-of-the-art technologies like React, React Native, Flutter, Angular, Vue, NodeJS, Python, Svelte and more.

GeekyAnts has worked with around 500+ clients all across the globe, delivering tailored solutions to a wide array of industries like Healthcare, Finance, Education, Banking, Gaming, Manufacturing, Real Estate and more. They are trusted tech partners of some of the world's top corporate giants and have helped small to mid-sized companies realize their vision and transform digitally. They are also the registered service suppliers for Google LLC since 2017.

They provide services ranging from Web & Mobile Development, UI/UX design, Business Analysis, Product Management, DevOps, QA, API Development, Delivery & Support and more.

In addition to that, GeekyAnts is the brains behind React Native's most famous UI library; NativeBase (15000+ GitHub Stars), BuilderX, Vue Native, Flutter Starter, apibeats and hold numerous other Open Source contributions to their name. GeekyAnts has offices in India (Bangalore) and the UK (London)

Key Responsibilities

Development & Architecture

• Design and develop scalable React Native applications with clean, maintainable code.
• Architect mobile solutions that work seamlessly across iOS and Android platforms.
• Collect requirements and provide technical solutions specifically for the React Native application.
• Collaborate with backend teams to align mobile implementation with backend solutions already designed.
• Implement complex UI components and animations using the React Native ecosystem.
• Build reusable components and libraries for team-wide adoption.
• Optimize application performance, memory usage, and battery efficiency.
• Implement accessibility features and standards.

Technical Collaboration

• Participate in architecture and design discussions.
• Establish and follow coding standards and best practices.
• Collaborate with product managers, designers, QA teams, and backend engineers.
• Contribute to technical decision-making related to mobile application architecture.
• Drive feature development and technical implementation.

Fintech, Security & Performance

• Implement secure authentication and authorization mechanisms.
• Follow secure coding practices for fintech mobile applications.
• Handle sensitive data securely (encryption, secure storage, token lifecycle management).
• Ensure compliance with mobile platform security guidelines.
• Identify and fix performance bottlenecks.
• Work with monitoring, crash analytics, and performance tracking tools.

Platform Integration

• Integrate native iOS and Android services and APIs.
• Develop and maintain custom native modules and bridging layers.
• Work with platform-specific features and capabilities.
• Ensure compliance with App Store and Google Play technical guidelines.

Testing & Build Debug Support

• Write unit test cases and maintain good test coverage.
• Participate in code reviews and ensure code quality.
• Understand mobile build and release pipelines (knowledge level expected, ownership not required).
• Know how to fetch mobile builds from Firebase or similar build distribution tools.
• Install builds on test devices and perform debugging and sanity testing.

Required Technical Skills

Core Technologies

• React Native: 7+ years of production experience.

• JavaScript / TypeScript: Expert-level proficiency.
• React: Deep understanding of hooks, lifecycle, and performance optimization.
• React Native bridging: Creating custom native modules and consuming them in React Native.
• Strong mobile fundamentals across iOS and Android.
• Experience working on large-scale fintech applications.

Build & Deployment Knowledge

• Working knowledge of Expo ecosystem (CLI, EAS).
• Understanding of cloud build systems.
• Knowledge of App Store Connect and Google Play Console release lifecycle (ownership not required).

State Management (Mandatory)

• Redux Toolkit (RTK) — Required.
• Strong understanding of async state handling, API integration, caching, and synchronization.

UI Development & Animations

• Advanced animations and gesture handling.
• Performance-optimized UI rendering.
• Responsive and adaptive layouts.
• Experience with modern UI libraries and design systems.

Platform Services

• Push notifications.
• Firebase ecosystem integration.
• Deep linking and universal links.
• Native module integrations.

Preferred Qualifications

Technical Expertise

• Over-the-air update experience.
• React Native New Architecture (Fabric / TurboModules) awareness.
• Performance profiling tools.
• Automated testing (Jest, Detox).
• Debugging tools (Flipper, React DevTools).

Development Tools

• Git-based version control workflows.
• Crash analytics tools (Crashlytics or similar).
• Analytics tools (Firebase Analytics, Amplitude, etc.).
• Performance monitoring tools.
• Experience using JFrog (Artifactory) for publishing and managing private NPM packages.

Additional Skills

• Repository and dependency management best practices.
• React Native Web exposure.
• REST API integration.
• Mobile security best practices.
• Accessibility implementation experience.

Experience Requirements

• 8+ years of React Native / Mobile development in production.

• Strong experience working on large-scale production apps.
• Experience supporting apps published on App Store and Google Play.
• Experience working on apps serving large active user bases.

Soft Skills

• Strong problem-solving and analytical thinking.
• Excellent communication and collaboration skills.
• Ability to work in fast-paced agile environments.
• Strong attention to detail.
• Strong team player mindset.