Locally based CPA firm since 1956


Grow with a company committed to your professional career and personal well-being. 

When you join the Williams, Steinert, Mask team, you become a part of the family and, to us, family is everything.

Job Openings

Tax Manager

Audit Manager

Senior Tax Accountant

Williams, Steinert, Mask is a third generation family-owned business that has provided audit, accounting, and tax services to individuals and small businesses in San Antonio for over 60 years. Founded by an enterprising CPA with a bold vision and a passion for personalized service, Williams, Steinert, Mask has deep roots right here in the heart of Texas. That helps explain why, six decades later, the heart of our business remains helping other businesses grow and prosper by providing them a world-class portfolio of accounting, finance, tax and investment advisory services.

Our company has spent years defining and refining our approach to business and our company culture. As our next generation assumes leadership roles, we’ve planned for strategic growth in our client portfolio as well as our team.

We know that company culture and top talent are the key drivers to long-term company success and client and employee satisfaction. If you’re an accounting professional looking for an organization committed to your career and well-being, and a culture that offers a fun, open, and balanced approach to work, then please contact us!

All inquiries will be held in confidence.


Treat People Like Family

As a family-owned business, the team at Williams, Steinert, Mask is not only committed to treating each other like family but every single person that interacts with our company. From clients to organizations we volunteer with, showing respect and kindness is our number one goal every day.

Think Innovatively

When you hire Williams, Steinert, Mask you don't just hire one person, you hire an entire team that will work with you to get the best results for you. Thinking outside of the box to find what will work best is one of the things that makes WSM unique and we're proud of that quality. 

Do the Right Thing

Doing the right thing for our clients, for our employees and for our community is at the heart of what drives our company and is a chief motivator among our staff. As a team, we area always striving to be honest, trustworthy and dependable for everyone we come into contact with.

Work Hard Together

Williams, Steinert, Mask is a team of skilled individuals and we believe that our talents are best utilized when they are combined. You can expect a team of our employees to work with you to help find the best outcome.

Be Responsive with Respect

Putting our clients first is a top priority for the Williams, Steinert, Mask team, but treating everyone with respect and being in regular communication is our bread and butter. Making sure we are available to our clients is crucial to living out our other core values.

Improve Yourself Everyday

The company culture at Williams, Steinert, Mask is designed to foster growth and encourage professional and personal development because we truly believe that we best serve our clients when we are, ourselves growing and improving as individuals and as a team.