Mastech Digital (MHH) 10-K 2018 FY Annual report

Exhibit 32.1

Certification Pursuant to 18 U.S.C. Section 1350,

As Adopted Pursuant to

Section 906 of The Sarbanes-Oxley Act of 2002

In connection with the Annual Report of Mastech Digital, Inc. (the “Company”) on Form10-K for the year ending December 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Vivek Gupta, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 29, 2019

/S/ VIVEK GUPTA

Vivek Gupta

President and Chief Executive Officer