It is very possible, I have done so for over 12 years. When you start out you work on mastering certain levels (network equipment, switching & routing, securit

It is very possible, I have done so for over 12 years. When you start out you work on mastering certain levels (network equipment, switching & routing, security, purchasing hardware for servers, workstations and other pieces of infrastructure, programming languages to solve certain problems, programming language internals, etc.) to creating automated deployment and security systems across distributed architectures, to a couple of languages that you literally develop in for 8 to 14 hours a day, even on weekends at times (Python, PHP, Java, C, C++, Go, Rust) and add more as new ones come out to see if they can help you in your work). The best of the so called DevOps have deep understanding of the technology they use (hardware, networking protocols, CDNs, programming language internals, security issues with each language and operating environment choice, etc.). It can be done, and specialization in many things for specific things is a requirement for the very high paying jobs (Python, Java, C, C++, Ruby, etc.). As the more you know (theory and in practice due to hands on experience over time) the more valuable you are and can make serious waves where ever you choose to work. If you really want to get good at the systems and software engineering sides use your favorite programming language and a new one you have not used to fully automate all of your operations and development deployment tasks. This will force you to learn a new programming language (at least the core concepts of it) and evaluate it to see if it can help improve things at work. If it can, then you begin to get into the internals of the language and do not forget many of the details as the start to become similar with other languages especially since most are written in C or C++. The hardcore engineers have the big thick books on their desks and read them from the cover to the back on a regular basis, as we know that understanding things at a deep level is extremely beneficial and financially rewarding. Four years is a short period of time but if your doing heavy engineering then it is possible to master multiple things but you have to have the time to do it which is normally the hard part.