The Queensland Police Union has expressed outrage at a decision to charge a senior Gold Coast officer over his involvement in the pursuit of an armed suspect last year.

Senior Constable Barry Wellington was working with partner Senior Sergeant Chris Hurley in May 2015 when they were involved in a massive police operation at Pacific Pines to apprehend two suspects, one of whom was armed.

During the pursuit, both officers allegedly opened fire on the moving car despite repeated orders to stand down.

Both were suspended from official duty and Senior Constable Wellington will face court next month after being issued with a notice to appear on one count of dangerous operation of a weapon.

Acting Queensland Police Union president Shayne Maxwell described the charge as excessive.

"It's outrageous that a police officer can be charged for doing their job," he said.

"We've been supporting all officers throughout this investigation and I find it unbelievable that one of them has been charged criminally when they're out there protecting the public."

Senior Constable Wellington will face the Southport Magistrates Court next month, while investigations continue into Senior Sergeant Hurley.