About Us

A local IT leader since 1990.

The Seitel Systems difference comes down to one central principle that guides everything we do:

Treat our clients and employees like real human beings.

We believe that a successful business is a collection of like-minded people who have a shared expertise, passion, or mission that unifies their work.

Our Core Values

Our expertise is in solving technical problems, and our unifying purpose is to create solid IT infrastructure that allows businesses to flourish by freeing teams to focus on what they do best.

  • We believe in taking care of our clients and our employees, and investing in long-term relationships.
  • We believe in keeping things as simple as possible, using best practices and established industry standard solutions.
  • We believe in the value of an objective expert opinion, and that our advice to clients should be unbiased by an interest in selling hardware or software.

This philosophy has served us well since our founding in 1990, and continues to drive us today.

Our Leadership

Our founder Peter “graduated” in 2015 (don’t you dare say “retired”), and can now generally be found bicycling the back roads, spending time with his family and friends, or volunteering as a math tutor.

Peter Seitel,
Founder & Partner Emeritus

David has served in a variety of roles in the technology business since 1989. After hours you’ll typically find him playing soccer or cheering on the Sounders.

David Leonhardt,
Managing Partner

Martin has been a part of the Seitel Systems “family” since 1997. He is sought out as a trusted advisor when clients need to find solutions to their IT problems… and also for his famous homemade tamales.

Martin Rodriguez,
Sales Manager

Judi is a team-oriented manager and creator of legendary “ice cream sandwich day” at the Service Desk. During off hours she’s often cheering on her kids on the volleyball or basketball court.

Judi Baker,
Service Desk Manager

Our team includes over 30 technical personnel across three offices in Seattle, Tacoma, and Bellingham. We are proud of the quality of work life we’ve created here, and the camaraderie you’ll find among our team.

Everyone on our team plays a vital role in supporting our brand and our way of doing business. As a result we set high standards for not just technical skills, but also for inter-personal skills, initiative and overall commitment to the larger client and Seitel Systems’ team.

Check out the biographies of our leaders, and you’ll immediately sense the difference. Our clients look to us first to keep their technology infrastructure happy & healthy, but they also look to us to be their trusted advisor and colleague.

real-world it expertise

Our team has expertise in leading business technologies from Microsoft, Amazon Web Services, VMware, Cisco, Dell, and more.

We use industry best practices methodology for our IT projects. We design solutions that are built upon industry-leading business technologies.

Bleeding-edge tech isn't usually the best fit for 99% of businesses. We use reliable proven technologies that your business can depend on. We stay up to date on industry trends and new technologies so we can recommend and implement them when they're ready for prime-time.

The blue bars represent the approximate percentage of our clients who use these leading technologies:

  • Cloud (O365, AWS, Azure)- 75%
  • Microsoft Servers (On Premises) - 50%
  • Virtual Servers (VMware, Hyper-V, AWS, Azure) - 90%
  • Wired & Wireless Networks - 99%
  • Windows OS - 95%

Seattle / Tacoma / Bellingham

managed it services you can trust.

Seitel Systems is a home-grown Puget Sound company trusted by locals since 1990.

Whether you have an in-house IT department that needs some help, or are fully outsourcing your IT operations, we come alongside as a trusted IT support partner for the long-term. 

Active Clients

Technical Staff


Years in Business

IT Managed Services without vendor bias

No cut corners.
No hidden agendas.

Transparency matters to us at Seitel Systems. We don't resell hardware or softwareso you can trust our recommendations. We are dedicated to providing the best advice we can without any vested interest or vendor bias.

We maintain Microsoft Partner competencies in the technologies our clients need most so that we have access to partner-only benefits for our clients. But unlike our competitors, we opt-out of referral fee programs so that we can keep our objectivity in the recommendations we make to our clients.  

We're in the neighborhood

We have offices in Seattle, Tacoma, and Bellingham,
and serve clients all over the greater Puget Sound area.

Contact Us

📞 (206) 832-2875

Seattle Headquarters:
1200 Western Ave Suite 100
Seattle, WA 98101