College of Engineering Purchasing and Accounts Payable Shared Services


COE-SS Purchasing Process changes in response to COVID-19. 



Information on accessing and how to use the OPP system:

Get started:  UCD PrePurchasing Handout

Login:  Online PrePurchasing

Aggietravel Tutorial link:




Hours of Operation:

Monday thru Friday

8:00am – 12:00 noon and 1:00pm – 4:00pm


Engineering Shared Services Team members:


Norma Andrade, Purchasing and Accounts Payable Specialist
nandrade@ucdavis.edu, (530) 754-0440

Irma Cerna, Purchasing and Accounts Payable Specialist
imcerna@ucdavis.edu (530) 754-0442

Jill Kessler, Purchasing and Accounts Payable Specialist
jmkessler@ucdavis.edu, (530) 754-0441

Kathleen Sanchez, Purchasing and Accounts Payable Specialist
kasanchez@ucdavis.edu, (530) 754-0437


NOTE: Please use the unit’s group email for questions or follow ups: coe-purch@ucdavis.edu


Team Lead

Pia Flory,  Purchasing and Accounts Payable Team Lead
paflory@ucdavis.edu , (530) 754-0432


Unit Manager

Melanie Clague, Director of Shared Services Purch & AP

mclague@ucdavis.edu , (530) 752-9052