**Exhibit 31.1**

** **

**CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002**

** **

I, MarkJ. Ferrer, certify that:

 
| 1.     |   | I have reviewed this quarterly report on Form 10-Q of Vastera, 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;                                   |
|   |   |                                                                                                                                                                                                                                                                                                                                             |
| 3.     |   | Based on my knowledge, the financial statements, and other financial  information included in this report, fairly present in all material respects  the financial condition, results of operations, and cash flows of the  registrant as of, and for, the periods presented in this report;                                                      |
|   |   |                                                                                                                                                                                                                                                                                                                                             |
| 4.     |   | The registrant’s other certifying officer and I are responsible for  establishing and maintaining disclosure controls and procedures (as defined  in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over  financial reporting (as defined in Exchange Act Rules 13a-15(f) and  15d-15(f)) for the registrant and we have: |
|   |   |                                                                                                                                                                                                                                                                                                                                             |
|   |   | a.                                                                                                                                                                                                                                                                                                                                               | Designed such disclosure controls and procedures, or caused such  disclosure controls and procedures to be designed under our supervision, to  ensure that material information relating to the registrant, including its  consolidated subsidiaries, is made known to us by others within those  entities, particularly during the period in which this report is being  prepared; |
|   |   |                                                                                                                                                                                                                                                                                                                                             |   |
|   |   | b.                                                                                                                                                                                                                                                                                                                                               | Evaluated the effectiveness of the registrant’s disclosure controls  and procedures and presented in this report our conclusions about the  effectiveness of the disclosure controls and procedures, as of the end of the  period covered by this report based on such evaluation; and |
|   |   |                                                                                                                                                                                                                                                                                                                                             |   |
|   |   | c.                                                                                                                                                                                                                                                                                                                                               | Disclosed in this report any change in the registrant’s internal  controls over financial reporting that occurred during the registrant’s most  recent fiscal quarter that has materially effected, or is reasonably likely  to materially affect, the registrant’s internal control over financial  reporting; and |
|   |   |                                                                                                                                                                                                                                                                                                                                             |
| 5.     |   | The registrant’s other certifying officer and I have disclosed, based  on our most recent evaluation of internal controls over financial reporting,  to the registrant’s auditors and the audit committee of registrant’s board of  directors (or persons performing the equivalent function):                                    |
|   |   |                                                                                                                                                                                                                                                                                                                                             |
|   |   | a.                                                                                                                                                                                                                                                                                                                                               | All significant deficiencies and material weaknesses in the design or  operation of internal control over financial reporting which are reasonably  likely to adversely affect the registrant’s ability to record, process,  summarize, and report financial information; and |
|   |   |                                                                                                                                                                                                                                                                                                                                             |   |
|   |   | b.                                                                                                                                                                                                                                                                                                                                               | Any fraud, whether or not material, that involves management or other  employees who have a significant role in the registrant’s internal control  over financial reporting. |

 
| August 13, 2003                       |   |
|---------------------------------------|--------|
|                                  |   |
| /s/ Mark J. Ferrer                    |   |
| Mark J. Ferrer                        |   |
| President and Chief Executive Officer |   |

 

Signed original of this written statementrequired by Section 302 has been provided to Vastera, Inc. and will be retainedby Vastera, Inc. and furnished to the Securities and Exchange Commissionor its staff upon request.

 

----