Do you mean C specifically, or C/C++? Most C programmers typically work on projects that have very strict performance requirements. This includes things like numerical code, system code (OS/drivers), and accelerator programming (specialized hardware/processors), or anything else where the absolute best performance is the goal. Also, embedded processors would typically be programmed in C (because of things such as lack of C++ (or other) compilers/interpreters, tight memory constraints, reliability (code has no implicit side effects), etc.
My first two jobs involved C++ programming (20+ years ago, in SA). Java (brand new then), was just too slow, and also wasn't as cross-platform as standard compliant C++ code (JVM would behave differently, on different platforms. Today, either C# or Java, with C/C++ in just the places that needed it would probably be the way it would be developed - the core IP would definitely still be all pure C.
This type of work isn't that typical in SA, which tends to gravitate towards web programming, ecommerce, non-perf-critical (often internal) application development, etc. A lot of the backend engine code on popular websites (Google, FaceBook, Amazon, etc.) is written in C++ as well as a lot of internal tools, libraries, etc. within the big tech companies. AAA game developers also frequently use C++ (UDK, or custom engines), as well as renderer backends for movies, etc. There are still a lot of apps developed in C++, especially when the code involves some level of data processing along with interactivity requirements.
If you take a look at:
Google Software Engineering positions, for example you will see that C and/or C++ are very frequently listed (often as 1st priority). Same for Tesla, any hardware manufacturer, Epic Games, Industrial Light and Magic / Disney, etc. to just to throw a few things out.