React Native Engineer (Lead)

AgileEngine

Location: Argentina, Brazil, Colombia, Guatemala, Mexico
Job Type: full-time
Salary: Unknown
Posted: May 25, 2025

Job Description

AgileEngine is one of the Inc. 5000 fastest-growing companies in the US and a top-3 ranked dev shop according to Clutch. We create award-winning custom software solutions that help companies across 15+ industries change the lives of millions.

If you like a challenging environment where you’re working with the best and are encouraged to learn and experiment every day, there’s no better place — guaranteed! 🙂

What you will do

Actively develop React Native applications used by thousands of people;
Implement best practices and technical solutions;
Take ownership of business requirements and design/implement testable solutions;
Collaborate closely with the US team, PMs, BAs, and QAs to ensure high-quality look and feel for all features;
Develop and integrate new applications and enhancements;
Proactively identify opportunities to improve stability and optimize the existing codebase;
Evolve the back-end infrastructure to empower web and mobile developers in creating compelling user experiences;
Write professional, performant, and high-quality code that supports a rapidly scaling business;
Maintain and instill high standards for code quality, application performance, and stability;
Work with our other engineering teams to deliver new products and ensure success for our customers;
Collaborate with the Product team to understand our users and their needs;
Ask the right questions and think deeply about building solutions that support both our short-term and long-term goals.

Must haves

4+ years of experience with Mobile Development;
2+ years of experience with React Native;
Native mobile applications development experience for Android or iOS;
Experience with such tools as Git;
Scrumban experience;
Upper-Intermediate English level.

Nice to haves

Proven experience with Vue.js;
Experience with Jest and Detox;
Experience with Kotlin or/and Swift;
Strong knowledge in JSX, Node JS and TypeScript;
Experience working with AWS, Lambdas;
Experience with Expo and EAS;
Experience with Sentry, Datadog, Papertrail.

🎯 Who is this job for?

This role fits a Senior React Native Engineer with 4+ years in mobile development and 2+ years specifically in React Native, ideally with native Android/iOS experience. The candidate should lead feature development, collaborate cross-functionally, maintain high code quality, and drive performance improvements in a fast-growing environment. Familiarity with TypeScript, backend integration, AWS, and mobile testing tools is a plus.

💬 Potential Interview Questions

Describe your experience leading React Native projects and teams.
I have led React Native teams by setting technical direction, reviewing code, mentoring developers, and ensuring delivery of high-quality mobile applications aligned with business goals.
How do you ensure code quality and performance in React Native apps?
I enforce best practices, conduct thorough code reviews, use performance profiling tools, implement automated testing with Jest/Detox, and refactor code to optimize load times and responsiveness.
What is your approach to collaborating with cross-functional teams like PMs, BAs, and QAs?
I maintain clear communication, actively participate in planning and grooming sessions, clarify requirements early, and coordinate closely to ensure features meet quality and UX expectations.
Can you discuss your experience with native mobile development for Android and iOS?
I have hands-on experience building native components in Swift and Kotlin to extend React Native capabilities and improve performance for platform-specific features.
How do you handle scalability and stability in rapidly growing React Native apps?
By modularizing code, applying best state management practices, monitoring crashes using tools like Sentry, and proactively identifying and fixing bottlenecks and memory leaks.
Have you worked with backend infrastructure to support mobile apps?
Yes, I’ve collaborated with backend teams to design APIs and evolved backend services, including AWS Lambdas, to provide efficient data access and enhance mobile UX.
What experience do you have with CI/CD for mobile apps?
I’ve set up CI/CD pipelines using tools like Expo EAS and GitHub Actions to automate builds, tests, and deployments, ensuring rapid and reliable releases.
Describe your experience with testing frameworks like Jest and Detox.
I use Jest for unit testing components and Detox for end-to-end testing of React Native apps to ensure stability and prevent regressions.
How do you stay updated with new React Native features and mobile development trends?
I follow official React Native releases, participate in community forums, attend webinars, and experiment with new libraries and tools to continuously improve our tech stack.
What strategies do you use to mentor and develop junior React Native engineers?
I provide pair programming sessions, conduct code reviews with constructive feedback, share learning resources, and set clear goals for skill development and career growth.

📋 Job Summary

AgileEngine is hiring a Lead React Native Engineer to develop high-quality mobile applications used by thousands across Latin America. You’ll own business requirements, deliver performant code, and collaborate closely with cross-functional teams in a fast-paced environment. Required: 4+ years mobile development, 2+ years React Native, native Android/iOS experience, and strong Git skills. Nice to have: Vue.js, Jest, Detox, Kotlin/Swift, AWS, and Expo knowledge. Join a top-ranked, fast-growing company focused on innovation and quality.