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 Quarterly Report of Mastech Holdings, Inc. (the “Company”) on Form 10-Q for the quarter ended September 30, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven J Shangold, 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. |
/S/ STEVEN J. SHANGOLD |
| Steven J. Shangold |
| Chief Executive Officer |
| Date: November 12, 2008 |