Exhibit 31.1

Certification of the Chief Executive Officer

I, Kyle J. Loudermilk, certify that:

1. I have reviewed this quarterly report on Form 10-Q/A of GSE Systems, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Date:  December 10, 2019	/s/ Kyle J. Loudermilk
	Kyle J. Loudermilk
	Chief Executive Officer (Principal Executive Officer)