Software Engineer - Mobile (React Native) - job 1 of 2

As a Software Engineer - Mobile at BitGo, you will design and build advanced applications for both iOS and Android platforms using React Native. You'll collaborate with cross-functional teams to define and ship new features, and write clean, maintainable code while ensuring high performance and responsiveness of applications. You'll also participate in code reviews, provide mentorship to peers, and continuously evaluate new technologies for enhancing development efficiency.

To be considered for the Software Engineer - Mobile position at BitGo, candidates need at least 4 years of proven experience in mobile application development using React Native, a strong understanding of JavaScript and TypeScript, and knowledge of SQL databases. A Bachelor’s degree in computer science or a related field is also required. Additionally, a genuine interest in cryptocurrencies and blockchain technology is preferred.

Software Engineers - Mobile at BitGo primarily work with React Native for app development, and use modern JavaScript technologies such as ES6 and TypeScript. They're expected to have experience with SQL databases like MySQL or Postgres, RESTful API design, and familiarization with version control systems such as Git and CI tools. Knowledge of mobile design principles and UI/UX standards is also essential.

The hiring process for a Software Engineer - Mobile at BitGo typically includes an initial interview with HR, followed by one or two technical interviews that assess your coding skills and problem-solving ability in React Native. You may also have interviews with cross-functional team members to gauge your fit within the company culture, along with your collaboration skills.

At BitGo, Software Engineers are encouraged to continuously improve their skills and take ownership of their projects. You’ll have opportunities for mentorship, involvement in innovative projects, and access to new technologies. As the company grows, there are opportunities to take on leadership roles or specialize in areas such as mobile design, blockchain technology, or product management.

In responding to this question, highlight specific projects where you used React Native to build mobile applications. Discuss your understanding of its core principles and any challenges you overcame regarding performance optimizations or ensuring a smooth user experience.

This question assesses your understanding of application architecture. You can discuss various state management libraries like Redux or Context API, providing examples of how you've implemented them to handle large or complex states effectively in your projects.

You should emphasize the importance of writing clean, maintainable code, including using linting tools for consistency, conducting thorough code reviews, and implementing unit tests. Discuss any performance profiling tools you use to identify and address bottlenecks.

Mention your strategies for staying current, such as following industry blogs, participating in online communities, attending meetups or conferences, and offering or taking part in professional development opportunities that align with your interests in mobile technologies.

In your response, detail a specific scenario where you encountered a difficult bug. Discuss your troubleshooting process, the tools you used to debug it, and how your resolution improved the application's performance or user experience.

To answer this question, discuss your knowledge of UI/UX principles and any processes you implement to evaluate user experience, including usability testing or gathering user feedback to incorporate in your design iterations.

Highlight your collaboration skills by discussing methods you employ, such as regular stand-ups or using collaboration tools like Jira or Trello to maintain open lines of communication with product managers and designers to ensure alignment on project goals.

Give examples of APIs you have worked with and discuss how you handled the integration process, including authentication methods, data management, and any challenges you faced in ensuring reliable communication between the app and the server.

This is an opportunity to discuss testing frameworks you've used, such as Jest or Mocha for unit testing, and the strategies you implement to ensure robust test coverage and maintain application reliability throughout the development lifecycle.

In your answer, showcase your time management skills by explaining how you prioritize tasks, use project management frameworks, and stay calm under pressure, detailing any specific examples where you've successfully delivered within tight deadlines.