Successful development of enterprise-wide information systems principles and implementation practices; Successful development of distributed multi-layered cross-platform applications with active integration of external services; Migration of existing applications to new more productive APIs and frameworks; Experience in IP/SS7 Networking; Understanding of information systems security principles and implementation methods; Good knowledge of Unix OS architecture; Providing technical expertise and leadership in the design, development, and delivery of software, while adhering to strict timelines, coding guidelines, deliverables, and quality.