I applied online. The process took 2 weeks. I interviewed at IRS (Wilmington, NC) in June 2019
Interview
Strictly mathematical questions and accounting principle type testing. Interviewed by manager then they provide you with paper and pencil to take a qualification exam. No calculator can be used for this either.
I applied online. The process took 1 day. I interviewed at IRS (Washington, DC) in Jan 2019
Interview
Structured group interview focusing on technology rather than tax law. Mainly asked if I knew how to use Excel at an intermediate level as well as other software. Asked generally about my education and experience at other federal agencies.