I have decades of experience working on marquis enterprise backend services.  I helped design and build out Apple's iCloud mail system, a large, complex system handling many, many millions of concurrent connections and handling requests with extremely low latency.  I helped design and build Hotmail.  I've worked on platforms from the largest of custom built out data centers, to the well known cloud providers, and even quite a few single-shot VPS instances.

Everything from massive scalability and performance across a multi-service system, to individual components such as thin data store abstraction layers, caching layers, messaging systems, tying together no/low-code services with your custom logic.  I've developed systems to integrate with the Linux kernel, and to do custom data store frameworks on raw devices, as well as simple TCP proxies and log parsers.

I can work in most any language, on most any platform.  I've got the skills and experience to tackle any backend service project; I've made a successful career out of it.