This applies to more than just government jobs, and I’m sure you have heard this before, but make sure you modify your app and resume for each open position. This cannot be stressed enough. Almost every organization uses technology to first scan candidates against the required skillset. If the open position asks for a “certificate in HR” or “PHR Certificate” but your resume/app says “HR certificate” or “Professional in Human Resources Certificate” you could lose out on an opportunity to even get your resume/app in front of the hiring manager even though you are qualified. This is one of the biggest things I have seen that prevents people from getting interviews or getting their foot in the door.