Technical skills required for senior: understand the fundamentals of networking and concurrent development, be able to effectively debug and troubleshoot. Tell

Technical skills required for senior: understand the fundamentals of networking and concurrent development, be able to effectively debug and troubleshoot. Tell me how a HTTP request works, be able to whiteboard a deadlock, be able to step through code with a tool (don't really care if it's VS or gdb). Soft skills required for senior: help teammates help themselves by documenting and/or improving the development process and providing constructive criticism/best practice advice.