Marqeta is looking for a Staff Software Engineer, Frontend with expertise in React Native to provide technical leadership in building their UX Toolkit (Web/Native). This is a new area of focus requiring someone to build cross-platform mobile and web applications from the ground up.
Requirements
- Over 8 years of experience in web and mobile application development, with deep expertise in architecting and delivering React Native solutions at scale.
- Demonstrated mastery of React Native, including advanced usage of React Navigation, Expo, and custom native modules in Swift, Kotlin, Objective-C, and Java.
- Proven ability to bridge React Native with complex native iOS and Android features, driving seamless integration across platforms.
- Strong architectural understanding of React.js and modern state management solutions (Redux, Context API, Zustand, etc.), with experience scaling apps with predictable state flows.
- Led the development and enforcement of design systems and modular component architectures to ensure consistency, reusability, and maintainability across large codebases.
- Deep knowledge of mobile performance optimization, including instrumentation, memory profiling, and rendering improvements.
- Extensive experience integrating RESTful and GraphQL APIs with scalable error handling, caching, and offline support patterns.
Responsibilities
- Partner with product, design, and engineering leadership to shape and deliver innovative cardholder experiences across web and mobile platforms, aligning technical strategy with business goals.
- Lead the design and development of React Native SDKs and applications, establishing architectural patterns that enable scalability, modularity, and cross-platform consistency.
- Architect reusable and extensible React Native components that adhere to modern UI/UX patterns, accessibility standards, and internal design systems.
- Drive mobile performance optimization strategies, including lazy loading, rendering optimizations, and bundle size reduction, to ensure fast, responsive experiences.
- Contribute hands-on to complex front-end systems using React Native, TypeScript, and web technologies, while fostering engineering excellence through mentorship and code quality initiatives.
- Define technical roadmaps and author detailed design documents that align with long-term platform strategy, balancing velocity with maintainability.
- Lead engineering discussions, guide decision-making across teams, and champion best practices for mobile and web development to improve developer velocity and user experience.
Other
- This role can be performed remotely anywhere within the United States.
- Track record of mentoring engineers, driving cross-team mobile strategy, and raising engineering quality through technical leadership.
- Exceptional debugging and cross-platform troubleshooting skills with a focus on improving app reliability and user experience.
- Strong communicator and collaborator, known for partnering effectively with design, product, and backend engineering to align on vision, tradeoffs, and execution.
- Domain experience in Payments or Fintech industries.
