10 CenterPoint Energy engineering leaders
Barbara Varanauski, VP Engineering & System Integrity at CenterPoint Energy, is one of ten CenterPoint Energy engineering leaders listed here, alongside people who hold director of transmission, substation, distribution resilience and gas engineering roles at the company. A reader can learn how engineering leaders work at CenterPoint Energy from people who have held the role.
Professionals to explore
Barbara Varanauski
LinkedInExperience: VP Engineering & System Integrity · CenterPoint Energy
Barbara Varanauski has been VP Engineering & System Integrity at CenterPoint Energy in Houston since January 2024 and has also held VP Engineering, Technical Field Operations and System Integrity there since 2021; the profile headline names gas engineering and system integrity. Barbara Varanauski was Director Fleet, Shop Services and Radio Communications at CenterPoint Energy (2018–2021).
Brad Diehl
LinkedInExperience: Director High Voltage Resilience Engineering · CenterPoint Energy
Brad Diehl has been Director High Voltage Resilience Engineering at CenterPoint Energy in Houston since January 2025. Brad Diehl also held Transmission Policy Manager (2023–2025), Staff Engineer (2022–2023), Senior Reliability Engineer (2019–2022) and Distribution Planning - Senior Engineer (2016–2019) roles at CenterPoint Energy.
Casey Tollefson
LinkedInExperience: Director of Engineering · CenterPoint Energy
Casey Tollefson has been Director of Engineering at CenterPoint Energy in the Greater Minneapolis-St. Paul Area since February 2025. Casey Tollefson was a Gas Engineer III at CenterPoint Energy (2011–2025) and a Construction Engineer at GRAEF (2009–2010).
Derrick K. Jones
LinkedInExperience: Director Distribution Resilience Engineering · CenterPoint Energy
Derrick K. Jones has been Director Distribution Resilience Engineering at CenterPoint Energy since February 2025, a role the profile tags at director level in engineering. Derrick K. Jones was Director of Metering and Field Operations (2023–2025), a Manager (2019–2023) and a Supervising Engineer (2014–2019) at CenterPoint Energy.
Jason Hulbert
LinkedInExperience: Director, Transmission Engineering · CenterPoint Energy
Jason Hulbert has been Director, Transmission Engineering at CenterPoint Energy in Houston since December 2022. Jason Hulbert also held Director, High Voltage Projects (2022), Director, System Protection & Major Underground Engineering (2021–2022) and Manager, High Voltage Planning & Support (2019–2021) roles at CenterPoint Energy.
Jesus Guerra
LinkedInExperience: Reliability Engineering, Director · CenterPoint Energy
Jesus Guerra has been Reliability Engineering, Director at CenterPoint Energy in Houston since January 2025. Jesus Guerra also held Distribution Engineering, Director (2023–2025), Reliability Consulting Manager (2019–2023) and Manager Grid Performance (2015–2017) roles at CenterPoint Energy.
Mason Butler IV
LinkedInExperience: Director of Engineering Texas · CenterPoint Energy
Mason Butler IV has been Director of Engineering Texas at CenterPoint Energy in Houston since March 2024, and the profile headline reads Gas Engineering Director. Mason Butler IV also held Director of Engineering, Indiana Ohio (2022–2024), Gas System Planning Manager (2021–2022) and Engineering Manager (2019–2021) roles at CenterPoint Energy.
Matthew Stewart
LinkedInExperience: Director of Gas Engineering, IN OH · CenterPoint Energy
Matthew Stewart has been Director of Gas Engineering, IN OH at CenterPoint Energy in Evansville, Indiana since April 2024. Matthew Stewart was Manager of Warehouse and Logistics (2022–2024) and Natural Gas Operation Supervisor (2019–2022) at CenterPoint Energy, and Gas Distribution Engineer at Vectren (2011–2017).
Ryan Abshier
LinkedInExperience: Director, Major Underground Engineering · CenterPoint Energy
Ryan Abshier has been Director, Major Underground Engineering at CenterPoint Energy in Houston since September 2022. Ryan Abshier has also held Manager of System Engineering at Vectren since 2017 and was Electric Transmission Planning Engineer III at Vectren (2008–2017).
Tim Sullivan
LinkedInExperience: Director, Substation Engineering · CenterPoint Energy
Tim Sullivan has been Director, Substation Engineering at CenterPoint Energy in Houston, Texas since December 2022, according to the experience section of the profile. Director, Substation Engineering at CenterPoint Energy is the only role the listing shows for Tim Sullivan, and it is a current role with no end date.
Choose the right perspective
Match the person's engineering area, such as transmission, substations, underground systems, resilience or gas distribution, to the decision you face. Note when each person's current role began, since a leader new to a role and one who has run it for years will see different parts of the work.
Questions to take into the conversation
- 01What took most of your time in your current engineering role, and how did you decide what to handle yourself and what to delegate?
- 02How did you decide which reliability or resilience projects to take on first?
- 03What did you carry over from earlier roles that changed how you lead engineering teams?
Reaching CenterPoint Energy engineering leaders
How can I contact one of these CenterPoint Energy engineering leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 1 company: CenterPoint Energy, based on profile data retrieved on October 18, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach CenterPoint Energy engineering leaders?
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What if they don't reply?
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Can an AI agent ask one of these CenterPoint Energy engineering leaders a question?
Yes. An agent with a USDC wallet on Base can ask one question without an Instant Expert account. It names the person, for example by the LinkedIn URL on this page, and pays per ask over x402 (HTTP 402). The person answers in writing or by voice note, and if nobody answers within 7 days, the payment goes back to the wallet automatically. Claude and ChatGPT can do the same through the Instant Expert connector: setup is at /docs/mcp for Claude and /docs/chatgpt for ChatGPT. x402 docs
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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