Senior MOBILE Software Engineer (React Native)

Senior Mobile Software Engineer (React Native) Why Join Us? Work on meaningful products used by athletes and families nationwide Direct impact on a rapidly growing, multi-brand platform About 3STEP Sports 3STEP Sports has an exciting opportunity for you to join a growing and leading organization in the youth sports space. At 3STEP Sports we do everything for one purpose: to unite people and unlock potential through the power of sport. As the largest and most connected youth sports organization with more than 2+ million athlete participants in clubs and events across seven sports, we bring sport to more athletes than any other organization in the country. By investing in our athletes and our team, both on and off the field, we're shaping champions for life and empowering people through sport.

To learn more visit:

www.threestep.com About the

Position Job Title:

Senior Mobile Software Engineer (React Native)

Employment Type:

Full-time/Exempt/Salary Location:

Hybrid in

Glenview, IL Travel:

Occasional travel to our sites and events Position Overview 3STEP Sports is looking for a Senior Mobile Software Engineer (React Native) to help design and build scalable, high-quality mobile applications using React Native including architecting, developing, and maintaining high-performance cross-platform applications for iOS and Android. This role bridges the gap between JavaScript/TypeScript and native mobile layers, ensuring seamless user experiences and scalable system design.

Key Responsibilities Feature Development:

Build and maintain complex, user-facing features end-to-end for our React Native mobile apps across iOS and Android. Translate design mocks into high-quality code using React Native and TypeScript.

Performance Optimization:

Profile and optimize app startup times, rendering, and memory usage. Design and implement mobile components and subsystems that are performant, maintainable, and scalable across platforms. Collaborate with product and design teams to scope, implement, and launch features that align with user and business needs. Contribute to platform improvements, including tooling, testing strategies, CI/CD (GitHub Actions + fastlane), and performance monitoring. Work with backend engineers to define mobile-specific APIs and improve client-server integration patterns. Identify and resolve performance or reliability issues in the mobile experience. Participate in code reviews, architecture discussions, and technical planning to raise engineering quality across the team. Support a strong mobile engineering culture through mentorship, collaboration, and a focus on continuous improvement. Requirements 8+ years overall professional software development experience 4+ years of experience in production-grade React Native apps Expert-level knowledge of React Native Proficiency in managing complex global state using tools like Redux Toolkit Strong experience with unit and E2E testing frameworks such as

Jest, React Native Testing Library, Maestro and Detox Native Tooling:

Familiarity with native build tools like Xcode and Android Studio (Gradle)

Security & Data:

Knowledge of secure storage (Keychain/Keystore), OAuth, and offline-first data strategies with Watermelon DB or SQLite Experience working in a non-framework RN CLI environment (without Expo) Experience with push notifications Ability to own the complete implementation of features Understand mobile performance, memory management, and platform-specific constraints 3STEP Sports Benefits Package includes: Competitive compensation Comprehensive benefits package, including medical, dental, vision, FSA/HSA accounts, life insurance, paid holidays, and a generous PTO plan, as well as other elective insurance options 401K retirement savings plan with company match Paid Parental Leave We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, age, disability, gender identity, marital or veteran status, or any other protected class.