Job         Senior Technical Lead ios,android,java Mastercard Location: NYC   Front End Developer with (iOS and Android)       5+ years' experience in Mobile Development.     Experience developing and maintaining consumer-facing mobile applications at scale. Strong Swift/Kotlin skills & knowledge of multi-threaded, asynchronous code.     Good understanding and knowledge around consuming GraphQL and REST APIs from Mobile applications.     Ability to understand and discuss complex topics with technical and non-technical audiences.     Good understanding of testing best practices and familiarity with at least one testing framework for Mobile Development. Skilled at writing Unit and Automation tests. Good knowledge of common design patterns, algorithms, and object-oriented programming with expertise in design patterns such as MVC and MVVM.