Senior Engineer ( React Native)

Velotio Technologies is a product engineering company working with innovative startups and enterprises. We are a certified Great Place to Work® and recognized as one of the best companies to work for in India. We have provided full-stack product development for 110+ startups across the globe building products in the cloud-native, data engineering, B2B SaaS, IoT & Machine Learning space. Our team of 400+ elite software engineers solves hard technical problems while transforming customer ideas into successful products.

We're looking for a Senior React Native engineer to lead the development, maintenance, and optimization of a React Native SDK built using React Native Bridge and Turbo Modules. The ideal candidate will have hands-on experience successfully building and publishing a React Native SDK—either to package managers like NPM or Yarn, or through GitHub releases.

You’ll be responsible for the entire SDK lifecycle — from development and deployment to compliance and long-term maintenance. This role demands deep expertise in React Native, including Bridge and Turbo Modules, as well as strong proficiency in native mobile development (Kotlin for Android and Swift/Objective-C for iOS). A solid understanding of API integration and the ability to troubleshoot complex cross-platform issues end to end is essential.

• Design and Develop React Native SDKs -Build robust, scalable, and modular SDKs using React Native Bridge and Turbo Modules, following industry best practices.
• Maintain and Optimize SDK Codebase - Continuously improve performance, stability, and maintainability of the SDK, including refactoring and optimizing legacy code.
• Manage SDK Release Lifecycle - Own the full release process — from versioning and packaging to publishing the SDK on NPM or Yarn and handling updates.
• Ensure Cross-Platform Compatibility - Develop and test the SDK to work seamlessly across both iOS and Android platforms, accounting for platform-specific nuances.
• Implement Native Modules - Write and integrate native modules in Kotlin (Android) and Swift/Objective-C (iOS) where necessary to extend React Native capabilities.
• Collaborate with Product and Engineering Teams - Work closely with internal teams to define SDK features, provide technical guidance, and support integration into various apps.
• Troubleshoot and Debug Issues - Diagnose and resolve complex bugs and performance issues across the entire tech stack — from JavaScript to native layers.
• Ensure Security and Compliance - Build SDKs that meet data privacy, platform compliance, and security standards required for public distribution.
• Document SDK Usage and Integration - Write clear, comprehensive documentation and examples to help external developers easily integrate and use the SDK.
• Stay Up to Date with Industry Trends - Keep current with the latest developments in React Native, mobile platforms, and SDK tooling to continuously improve the product.
• Lead Architecture Decisions - Define the SDK's architecture and design patterns to ensure scalability, modularity, and long-term maintainability.
• Monitor SDK Usage and Performance - Set up analytics and monitoring tools to track adoption, usage patterns, and performance in real-world applications.
• Provide Developer Support - Assist internal and external developers with integration issues, troubleshooting, and best practices for using the SDK.
• Review Code and Enforce Quality Standards - Conduct thorough code reviews and enforce coding standards, test coverage, and CI/CD practices across the SDK repository.
• Write Unit, Integration, and E2E Tests - Develop comprehensive test suites to ensure code reliability and reduce regressions during updates and releases.
• Integrate CI/CD Pipelines - Set up and maintain automated build, test, and release pipelines for the SDK using tools like GitHub Actions, Bitrise, or CircleCI if required.
• Evaluate and Integrate 3rd Party Libraries - Research, evaluate, and safely incorporate third-party libraries where needed, ensuring minimal bloat and maximum stability.
• Manage SDK Versioning and Backward Compatibility - Carefully handle version updates, changelogs, and ensure that new releases maintain backward compatibility or provide proper migration paths.
• Contribute to Internal Tools and Templates - Create reusable templates, CLI tools, or internal documentation that streamline development and testing of apps using the SDK.

• 3-8 yrs Experience in React Native - Deep understanding of the React Native framework, especially around performance optimization, modular architecture, and ecosystem tools.
• Proficiency with React Native Bridge and Turbo Modules - Experience building and exposing native modules to JavaScript using both the legacy bridge and the newer Turbo Modules architecture.
• Native Mobile Development - Proficient in one or both of the following: Android (Kotlin/Java) and iOS (Swift/Objective-C), with the flexibility to contribute across both:
• Android: Kotlin and/or Java
• iOS: Swift and Objective-C
• Ability to write, maintain, and debug native code for both platforms.
• SDK Development Experience - Proven experience designing, developing, publishing, and maintaining SDKs or libraries used by other developers.
• Package Management Tools - Experience publishing packages to NPM, Yarn, or similar, including semantic versioning, changelogs, and dependency management.
• API Integration & Data Handling - Strong understanding of REST/GraphQL APIs, WebSockets, and secure data handling (OAuth, encryption, etc.).
• Testing and QA - Proficiency in writing unit, integration, and E2E tests using tools like Jest, Detox, and native test frameworks.
• CI/CD for Mobile SDKs - Familiarity with CI/CD systems like GitHub Actions, CircleCI, Bitrise, or Fastlane for automated builds, testing, and deployment.
• Debugging & Performance Profiling - Skilled at diagnosing performance bottlenecks and platform-specific bugs using tools like Flipper, Xcode Instruments, and Android Studio Profiler.
• Cross-Platform Tooling Knowledge - Familiarity with tools like CodePush, App Center, Firebase, Sentry, etc., to improve release management and error tracking.
  

Our Culture:

• We have an autonomous and empowered work culture encouraging individuals to take ownership and grow quickly
• Flat hierarchy with fast decision making and a startup-oriented “get things done” culture
• A strong, fun & positive environment with regular celebrations of our success. We pride ourselves in creating an inclusive, diverse & authentic environment.

At Velotio, we embrace diversity. Inclusion is a priority for us, and we are eager to foster an environment where everyone feels valued. We welcome applications regardless of ethnicity or cultural background, age, gender, nationality, religion, disability or sexual orientation.