Kafka,BigQuery,Dataflow,Spark,Akka-Http,GRPC,BigTable,JavaScript frameworks; application scalability at any application tier; SQL,relational database schema design and ORM technologies; and Agile/Scrum practices,Dynamic server-side OOP languages; Scala,Java,C++,PHP,Python,Perl,Ruby,or similar; design patterns,algorithms,statistics,programming languages,networking and operating systems; web application internals and common technologies; deployment strategies