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# Senior Software Engineer, Mobile (React Native)

- **Company:** Apex Systems LLC
- **Location:** Denver, CO, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Apple IOS, App Store (IOS), Unit Testing, Cascading Style Sheets (CSS), Mobile Application Development, Software Quality, Code Review, Computer Programming, Continuous Integration, Software Debugging, Logic Synthesis of Circuits, ECMAScript, Mobile Application Software, OAuth, Objective-C (Programming Language), Pair Programming, Software Deployment, Software Engineering, TypeScript, Circleci, Performance Testing, Test-Driven Development (TDD), ReactJS, Browserstack, Git, Figma, React Native, React Redux, React Testing Library, Google Play, Restful APIs, Software Version Control
- **Published:** October 22, 2026
- **Apply:** https://www.juju.com/job/1_25068435D0BB4564861BAF34302BCABC-CO844768662303208

## About the Role

The ideal candidate will be a technical contributor who is business-oriented and fits within a fast-paced, technology-driven team.
Key Responsibilities - Develop, test, and deploy mobile applications for iOS and Android using React Native. - Collaborate with product managers, designers, and other team members to understand project requirements and contribute to application design and architecture. - Implement and maintain CI/CD pipelines to automate the deployment process. - Debug and resolve technical issues, identifying root causes and implementing solutions. - Ensure code quality through code reviews, writing unit tests, and implementing best practices for mobile development. - Participate in agile ceremonies and pair programming. - Conduct both new feature work and maintenance on the application.
Required Qualifications **Experience:** 3-4 years of hands-on programming experience, including shipping production-level React Native or React applications. **Technical Skills:** - **Development:** React Native and TypeScript are required.
Proficiency in React/Redux, JavaScript (ES6), iOS (Swift/Objective C), Android (Java), HTML, CSS. - **Testing:** Jest, Detox, React Testing Library, CircleCI, BrowserStack. - **Tools & Methodologies:** Experience with Redux or similar state management tools, REST API Frameworks, API authentication techniques (OAuth2), version control systems (e.g., Git), Agile development, Continuous Integration, and Test-Driven Development. - Knowledge of Apple's SDKs/frameworks and the App Store review process. - Knowledge of Google's SDKs/frameworks and the Google Play Store review process.
Preferred Qualifications - Experience with Figma. - Experience with e-commerce applications. - Familiarity with performance testing tools and optimizing applications for higher performance. - Experience working with a UX digital design team.