10+ years experience delivering and operating large scale, highly available distributed systems/managed services. Strong knowledge of C++/C , Systems Programming & Distributed Systems  Proficient with data structures, algorithms, operating systems, and distributed systems fundamentals. Good understanding of networking protocols (TCP/IP, HTTP) and standard network architectures Good understanding of databases, NoSQL systems, storage and distributed persistence technologies Strong understanding of Linux & Linux OS Internals Strong problem determination, problem resolution and performance tuning skills Experience building multi-tenant, virtualized infrastructure and/or working on open source software/contributions to open source Redis/memcached/Cassandra/PSQL a strong plus.