Hi. Great accomplishments. 10 Years is not a big concern in Europe so you can definitely leverage your experience to get a job.

The main question would be how to transition from something as specific Gov R&D to Tech. Perhaps you can draw some parallels and find a way to be a strong PM candidate.

if you are good at standardized testing, you may want to leverage that. Top programs have been picky about people with score waivers, denying the large majority of them. Usually a waiver at LBS requires a CFA level 2 at least or another certification as a replacement. You may want to spend some time on the schools' website and google to figure out if your qualifications and accomplishments. different schools have different rules.

In terms what would be a good score, anything above 710 is good for Europe and obviously if you can get a 750+, you will be eligible for a nice scholarship potentially.

I would probably still check with AdCom if you are targeting specific schools - who knows, they may waive it. Things change year to year and round to round. It does not hurt to check professionally