Cloud and Web Architecture are my strong suits. Cloud(AWS)/Linux SRE/DevOps, web services development, RESTful, IOT/anything web, creating frameworks and stacks, based mainly on the frontier of open source, or open source derivatives.
You know you have a career match when you don't want to stop your days work, just have more work to do and want to get it done, and your spouse has a hard time peeling you off the linux terminal late at nights...