Who is an API/SDK documentation specialist?

Don't confuse "technical writing" with writing for the programming/software engineering fields. SDK/API documentation specialists are programming/software engineering writers technical writers with proven expertise in the programming/software engineering fields. Our SDK/API documentation specialists are primarily programmers/software engineers, and meet these unique requirements. They combine a wealth of hands-on programming experience with excellent writing skills. When vital technical know-how is handed-down correctly the entire software production cycle benefits.
Documenting use of an SDK means... how to use the various functions, linkers, compilers, support software, and libraries to best develop whatever it is the customer wants to develop.
Documenting use of an API means.... how to use the collection of functions (called message or member functions in 0-0 terminology) that a programmer (presumably using the SDK) can call and link in to create a program.
All things considered, API and SDK documentation is considered to be of a high standard when all the information that is needed to use a product is well explained, well organized, and can easily be found. Although an investment in solid technical publications is one of the easiest yet most rewarding decisions a company can take this decision often comes as an after thought. Investing a relatively small sum of money on documentation can result in dramatic improvements. This important step should never be overlooked. Our clients will tell you that the real benefits resulting from the SDK and API documentation we have produced have exceeded their expectations, and outweighed the costs. We take pride in delivering on budget and on time, but our true satisfaction stems from the well-crafted documents we produce and the time and effort we save users and engineers who use our resources.