Mobile App Lead Developer (React Native)

Location: US-based (Remote-friendly, multi-time zone collaboration)

Employment Type: Full-Time

About Katapult

Our mission is clear: to unlock financial possibilities through innovative technology. Our vision is to remove financial barriers and transform the shopping experience with technology that simplifies and enhances access for consumers. Our core values reflect how we operate—we aim to uplift our employees, customers, and retail partners by offering transparent and innovative financial solutions. We deliver outstanding results through dedication, integrity, and teamwork, creating opportunities for success and growth every day. Inclusion is at the heart of who we are; together, we achieve more. We work hard, play hard, and celebrate big wins. 

At Katapult, we believe that opportunity is everything, and our people drive our success. We seek individuals who are committed to excellence, eager to learn, and ready to bring their best every day. With a competitive benefits package, an engaging culture, and ample opportunities for career advancement, Katapult is committed to investing in its people. 

About the Role

We are seeking a Senior Mobile App Developer with deep expertise in React Native to lead the design, development, and delivery of high-quality mobile applications for both iOS and Android platforms.

This role is ideal for a hands-on technical professional who thrives in a fast-paced environment, enjoys solving complex technical challenges, and can collaborate effectively within a small, high-performing team distributed across US and global time zones.

You will play a key role in architectural decisions, technical solutioning, mentorship, and delivery execution while helping shape best practices and mobile engineering standards.

Key Responsibilities

• Lead end-to-end development of mobile applications using React Native
• Architect scalable, secure, and high-performance mobile solutions
• Own technical solutioning and contribute to system design decisions
• Collaborate closely with Product, Design, Backend, and DevOps teams throughout implementation and delivery
• Partner closely with Product Owners during discovery and delivery to shape requirements, clarify technical tradeoffs, and influence roadmap decisions
• Work effectively with US-based and remote team members across time zones
• Conduct code reviews and enforce engineering best practices
• Optimize application performance, stability, and responsiveness
• Integrate APIs, third-party SDKs, and native modules
• Participate in sprint planning, estimation, and delivery commitments
• Plan and coordinate mobile releases across iOS and Android in partnership with Product, QA, and Backend teams
• Monitor application health post-deployment, including crashes, performance metrics, and user-reported issues, and drive timely remediation
• Be part of an on-call rotation
• Mentor and guide junior and mid-level developers

Required Qualifications

• 7+ years of software engineering experience
• 4+ years of strong hands-on experience with React Native
• Proven experience delivering production-grade apps on both iOS and Android
• Strong proficiency in JavaScript / TypeScript
• Deep understanding of mobile architecture patterns (MVVM, Clean Architecture, etc.)
• Experience with state management tools (Redux, Zustand, or similar)
• Strong knowledge of RESTful APIs and asynchronous programming
• Experience bridging React Native with native modules (Swift/Objective-C and/or Kotlin/Java)
• Strong debugging and performance optimization skills
• Experience working in Agile/Scrum environments
• Excellent communication skills and ability to lead technical discussions
• Experience working in distributed teams across multiple time zones 

Nice to Have

• Prior experience in FinTech, payments, or regulated industries
• Experience with mobile security best practices (encryption, secure storage, token handling)
• Knowledge of mobile CI/CD pipelines (Fastlane, Bitrise, GitHub Actions, etc.)
• Experience with app store release management (App Store & Google Play)
• Familiarity with automated testing (Jest, Detox, Appium)

Leadership Expectations

• Act as a technical owner for mobile initiatives
• Influence architecture and long-term technical direction
• Raise engineering standards and advocate for clean, maintainable code
• Mentor developers and support career growth within the team
• Drive accountability and execution in a fast-moving environment
• Engineering Culture & Ways of Working
• High ownership environment where senior engineers have real influence over architecture, technical direction, and delivery
• Remote-friendly culture with a strong emphasis on trust, communication, and autonomy
• Forward-looking mindset, leveraging AI-assisted tools and actively identifying new opportunities to improve efficiency, while thoughtfully driving adoption where they add real value

What Success Looks Like

• Reliable, performant mobile apps delivered on schedule
• Improved code quality and maintainability
• Strong collaboration across product and engineering
• A growing and technically stronger mobile team