Opportunity to work on sophisticated platforms, SDKs and developer tools for a company that develops high-performance, mission-critical security systems that underpin vast quantities of commercial traffic. You will learn about systems that are used by major commercial developers worldwide, and to write well-architected code with well-designed interfaces Expertise in one or more of ObjC/Java/Swift/Kotlin/C/C++ Strong understanding of web technology, cookies and web sessions Experience with multithreaded and concurrent systems 5-10 years of development experience Systems-level mobile development Android NDK experience an advantage We are looking for talented system-level developers who can make a strong contribution to the team and produce excellent quality code for use in customer systems.