Is there any difference between customer support engineers,
customer’s test engineers & on-site system test engineers?
Customer support engineer is usually a kind of
operational engineer who knows how to use the system. Hence they
might perform support tasks: some maintenance or managing the
users, or accessing the database directly to investigate what could
cause the issue.
Customer’s test engineer is an engineer that
is hired on customer side. They have the expertise in test and they
perform acceptance testing (not the same as User Acceptance
Testing). They have to have more technical skills that support
engineers have and they have to know the system better. But still
not so good since they are outside the development process.For
example, customer’s test engineers might test how well the system
can be installed in customer’s infrastructure. Vendor’s test
engineers cannot do that effectively due to access
Onsite test engineers are the test engineers
which are hired by the software vendor, but physically work in
customer’s office. They are inside development process so that they
have the deepest awareness of the product. They also have testing
expertise but normally having such kind of engineers is more
expensive than having own engineers.