Hi,
I've reviewed thousands of resumes and interviewed hundreds of candidates as a Senior Developer at Aon, JP Morgan Chase, Lincoln Financial, Sysmex and other smaller companies all within the US. Also when I was a consultant with Adecco and Modis I helped their recruiters screen candidates.
There is a small disconnect between what you're asking and your post, as you say it would be a FTC and the job seems to indicate it's a fixed bid project.
FYI at some different points in my over 20 year career in the US I've been certified in .NET, Java, JavaScript, HTML, CSS and Angular, of course they expired as my last project was 5 years long.