Our Team
The telemetry data intelligence experts
Meet our leadership
Led by experts in large-scale distributed systems, data science and enterprise software, Circonus is pioneering the way that telemetry data at scale is leveraged throughout the enterprise, from operational analytics to IoT applications.

Bob Moul
CEO
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David Wallace
CTO
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Theo Schlossnagle
Founder & Distinguished Engineer
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Noreen Allen
CMO & Head of Strategy
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Brian Dinan
Finance/HR Director
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William Krause
VP Customer Success & Solutions Engineering
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Tim Van Ash
VP of Product
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Tyler Carnathan
VP of Sales
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Bob Moul
CEO
Bob is a veteran technology CEO with more than 40 years of experience working with a broad range of commercial, government, academic, and non-profit clients.
Prior to Circonus, Bob was the CEO of Cloudamize, Artisan Mobile, and Boomi, and president of SCT Global Education Solutions. Bob began his career with 19 years at EDS, initially in systems engineering roles, and later as a senior executive leading operations in England, Hong Kong, and Australia.
Bob holds a master’s degree in technology management from the University of Maryland and is a graduate of executive programs at the University of Michigan and MIT. He was named a 2011 and 2021 Ernst & Young Entrepreneur of the Year finalist for Philadelphia, the 2013 Small Business Person of the Year by the Philadelphia Chamber of Commerce, and one of the most influential business people in the city by both Philadelphia Magazine and the Philadelphia Business Journal.
David Wallace
CTO
As Circonus CTO, David leads the development of the company’s innovation and technology strategy, ensuring the infrastructure is secure, reliable, and scalable. Leveraging a proven agile methodology, David and the team continuously refine and develop solutions to support client needs. Simultaneously, they work to execute the product roadmap strategy and deliver innovation to build upon Circonus’ market leading platform.
With over 25 years of experience, David has a proven track record of helping small companies grow, mature, and cultivate strong cultures. David has led multiple technical organizations across the Clinical, Procurement and Insurance sectors. He has been recognized by the Philadelphia Business Journal multiple times for his impact on the local technology sector.
Previously, David was CTO of Greenphire, the leading clinical trial payments technology solution. There he helped build and scale the organization from 15 to over 350 employees, followed by a sale to Thoma Bravo. Prior to that, David held leadership positions at iPipeline, the market leader of Insurance SaaS Technologies, and Procurian, the leading procurement business solutions.
Born in Ireland and raised in the Philadelphia area, David earned his Bachelor of Science at Delaware Valley University. He lives in Chester Springs, PA with his wife and 2 children. He is a retired Adventure Racer and an active traveler with keen interests in hiking, golf, and anything outdoors.
Theo Schlossnagle
Founder & Distinguished Engineer
Theo has been architecting, coding, building, and operating scalable systems for 20 years. As a serial entrepreneur, he has founded four companies and helped grow countless engineering organizations.
After earning undergraduate and graduate degrees from Johns Hopkins University in computer science, Theo went on to research resource allocation techniques in distributed systems during four years of post-graduate work. In 1997, Theo founded OmniTI, which established itself as the go-to source for organizations facing the most challenging scalability, performance and security problems. Theo founded Circonus in 2010, and continues to be its principal architect.
A widely respected industry thought leader, Theo is the author of “Scalable Internet Architectures” (Sams), a contributor to “Web Operations” (O’Reilly) and “Seeking SRE” (O’Reilly), and a frequent speaker at worldwide IT conferences. Theo is a member of the IEEE and a Distinguished Member of the ACM. He serves on the ACM Practitioners Board and as co-chair of ACM Queue and holds the elected position of ACM Member at Large (2018-2022).
Noreen Allen
CMO & Head of Strategy
Over the past twenty years, Noreen has helped build and scale five growth-stage tech companies. She played a significant role in leading two companies through IPO, setting up two others for IPO following departure, and guiding them all through several rounds of fundraising and multiple acquisitions.
Most recently, she spent ten years as CMO of Bandwidth, Inc. (Nasdaq: BAND), where she helped to scale revenue to $500M, and played a key role in the company’s successful IPO and international expansion. Before that, she led global marketing for ChannelAdvisor, Hosted Solutions, Motricity, and SpectraSite.
Noreen has a Bachelor of Arts degree from Rider University.
Brian Dinan
Finance/HR Director
Brian is a seasoned executive with over 15 years of experience in the public and private accounting sectors.
Prior to joining Circonus, Brian was the Controller for Symphony Health and part of a team that led a dramatic turnaround of the business resulting in a profitable exit in 2017.
Brian has also worked in the auditing practice at Deloitte and served in a manger role across multiple different sectors servicing large to mid-market companies.
Brian graduated from Philadelphia University with a Bachelor of Science degree in Accounting in 2003. He currently lives outside the Philadelphia area.
Will Krause
VP Customer Success & Solutions Engineering
Will has a decade of experience in engineering and customer-facing roles, supporting a diverse range of enterprise clients.
Previously, Will was a Software Engineer at Comcast working on the Next Generation Access Network team. While a Solutions Architect at Veridium, he supported customer deployments and integrations with the company’s multifactor authentication product. As a Cloud Architect and Senior Solutions Engineer at Appbus, he functioned as the project lead for the company’s pivot to a SaaS model while ensuring the success of their existing customers. Will was also a Solutions Engineer at SevOne, where he supported several of the company’s top grossing Fortune 500 customers.
Will graduated from Princeton University with a B.A. in Economics in 2013. He lives in Philadelphia with his wife and two pets, Pepper and Patch. In his free time, he enjoys keeping up his Spanish, working on hobby projects, and exploring the city.
Tim Van Ash
VP of Product
Tim has 30 years of experience in building world-class software and SaaS products. With a background in products, development, strategy, consulting and sales, he is responsible for driving the strategic direction of the Circonus platform and products.
Over the course of his career, Tim has held leadership positions across leading APM & monitoring companies like Nimsoft, Virtual Instruments, Mercury Interactive, CA Technologies (now Broadcom) and more recently, in DevSecOps as the SVP of Products and Technology at AutoRABIT.
Tim earned his Bachelor of Information Technology (BIT) from the University of Canberra, Australia. Today, Tim and his family live in San Jose, CA and enjoy hiking and traveling the country, with a major road trip every year.
Tyler Carnathan
VP of Sales
Tyler is a seasoned sales leader with proven experience building high-performing software sales teams.
Most recently, Tyler was with Verkada, the leader in cloud-managed enterprise building security. During his four years there, he helped quadruple customers to more than 13,000 and achieve a valuation of $3.2B.
Before Verkada, he spent two years with Alooma, a data pipeline as a service business, where he helped to scale ARR substantially before the business was acquired by Google. Prior to Alooma, he spent seven years leading teams at Yelp (pre and post IPO).
Tyler has a Bachelor of Science, Economics degree, from the University of Oregon.