Skip to content

👋 Welcome to the new SEAOC website!

To access your account, use your email address on file with your MO to create your new login — your previous password will not work. Set up your login here

Questions? Contact us at seaoc@seaoc.org.

in your cart View Cart

Cart Join Login

Who We Are
Membership
- Why Join SEAOC
- Frequently Asked Questions
Advocacy
- Statements and Positions
- Advocacy Updates
Education
- Events
Resources
SEAOSC
SEAONC
SEAOCC
SEAOSD

Contact
Join Login

Back to SEAOC Directory

Matthew J Mester, SE

Director of Engineering

MiTek/SidePlate Systems, Inc.

Contact information may be available to logged in members.

1201 J Street Suite 200
Sacramento, California 95814
United States

—

916.447.1198

Privacy & GDPR Notice

The SEAOC website is intended for users located in the United States. SEAOC does not knowingly collect personal data from individuals located in the European Union. If you are accessing this site from the EU, please be aware that any information you voluntarily submit will be processed in the United States. For questions about our data practices, contact us at seaoc@seaoc.org.

Association Management Software

Copyright © 2026 - Structural Engineers Association of California. Legal

×

Membership & Account Access

Need To Create An Account?

If you are already a member, please set up and log in to your member account by clicking "Create an Account" below. This option is also for current individual members and staff of company members who need to login, but do not have a user account set up.

Once logged in, you can:

Update Your Profile
Register for Events
View & Pay Invoices

Create an Account

Applying for Membership?

We invite and encourage you to join! By working together, we can achieve our mission to maintain and enhance our industry as a whole.

Becoming a member offers access to a network of professionals, fostering valuable connections and collaboration opportunities. Additionally, it often provides resources, such as training programs or industry insights, enhancing members' professional development.

View Membership Information