Senior Mobile Engineer, CoinDesk Media

Bullish-posted 2 months ago

Full-time • Mid Level

Hybrid • New York, NY

251-500 employees

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CoinDesk is the most trusted media, events, indices and data company for the global crypto economy. Since 2013, CoinDesk Media has led the story of the future of money and investing, illuminating the transformation in society and culture that comes with it. Our award-winning team of journalists delivers news and unparalleled insights that bring transparency, comprehension and context. CoinDesk Events gathers the global crypto, blockchain and Web3 communities at annual events such as Consensus, the world’s largest and longest-running crypto festival. CoinDesk Indices offers expertise in digital asset indices, data and research to educate and empower investors. For more information on CoinDesk media and events, please visit http://coindesk.com [coindesk.com] and for breaking headlines, data and indices visit http://coindeskmarkets.com [coindeskmarkets.com] In November 2023, CoinDesk was acquired by the Bullish group, owner of Bullish, a regulated, digital assets exchange. For more information on Bullish, please visit https://bullish.com . CoinDesk operates as an independent subsidiary with an editorial committee to protect journalistic independence. Reports to: Director, Engineering, CoinDesk The Opportunity Are you passionate about building exceptional mobile experiences that connect millions of users to the world of cryptocurrency and digital assets? We're looking for a Senior Mobile Engineer with expertise in React Native and Expo to develop CoinDesk's next-generation mobile application. You'll be working on the CoinDesk mobile app that serves crypto enthusiasts, traders, and industry professionals who need immediate access to market-moving news, price alerts, and comprehensive market analysis. This includes building robust mobile features, developing engaging user experiences, and ensuring optimal performance across iOS and Android platforms. If you love crafting exceptional mobile experiences, enjoy tackling complex technical challenges, and want to make an impact in the rapidly evolving crypto and media space, we'd love to hear from you. Note: This position is based in NYC and will be required to work from our office located near Union Square three (3) days per week.

Build and maintain the CoinDesk mobile application using React Native and Expo, delivering real-time crypto market data, news, and interactive features to millions of users across iOS and Android.
Develop highly performant and stable mobile experiences capable of handling real-time market data streams, push notifications, and complex user interactions.
Collaborate with product teams to implement user-centric features, optimize app performance, and ensure the mobile experience aligns with CoinDesk's brand and user expectations.
Design and integrate mobile-optimized APIs and work with backend systems to ensure seamless data flow between mobile clients and server infrastructure.
Implement comprehensive testing strategies including unit, integration, and end-to-end testing to ensure app reliability and reduce production issues.
Monitor and improve app stability using crash reporting, performance monitoring, and user analytics to proactively identify and resolve issues.

Hands-on mobile development expertise with React Native for building cross-platform applications.
Strong knowledge of automated testing practices including experience writing unit, integration, and end-to-end tests using frameworks like Jest, Testing Library, Detox, or Playwright.
Familiarity with CI/CD pipelines and experience integrating testing and deployment processes into GitHub Actions or similar platforms.
Experience with debugging and improving app stability using tools like DataDog, Sentry, Firebase Crashlytics, or similar platforms to track crashes and performance issues.
Experience working with REST APIs and backend systems including the ability to debug endpoints and collaborate effectively with backend teams.
Strong communication and collaboration skills with the ability to work cross-functionally while proactively contributing to technical discussions.
Proactive mindset with a demonstrated ability to identify problems early and take initiative in driving projects forward.

Up-to-date understanding of the React Native and Expo ecosystem including experience with library upgrades and long-term maintenance strategies.
Experience with observability tooling such as Datadog, LogRocket, or similar platforms for logging, monitoring, and performance tracking.
Experience writing or maintaining internal documentation with the ability to create clear documentation for both technical and non-technical audiences.
Exposure to OTA updates and app store submission processes including familiarity with EAS Update, Apple App Store, and Google Play Store processes.
Mobile accessibility and UI/UX experience with awareness of platform-specific design conventions and accessibility standards.
Security-minded development experience including familiarity with secure data handling, authentication flows, and mobile security best practices.

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