10 Delek US operations leaders
Executive Vice President of Operations, VP, General Manager and Senior Director, Refinery Operations are among the roles held by these ten Delek US operations leaders, alongside reliability, maintenance and renewables leaders. A reader can learn how operations leaders work at Delek US from people who have held the role.
Professionals to explore
Arvin Paul
LinkedInExperience: VP Technical · Delek US
Arvin Paul has been VP Technical at Delek US since January 2024, based in Brentwood, Tennessee, where the role is responsible for central Operations, Maintenance, and Technical service organizations. Arvin Paul was VP & General Manager at TotalEnergies in 2023, Senior Manager Operations at TotalEnergies from 2021 to 2023 and Operations Manager at Marathon Petroleum Corporation from 2019 to 2022.
Billy Bain
LinkedInExperience: VP, Reliability & Maintenance · Delek US
Billy Bain has been VP, Reliability & Maintenance at Delek US since July 2022, based in the Nashville area, and the profile also lists a Sr. Director of Maintenance and Reliability role at Delek US from 2016. Billy Bain was Sr. Director Business Transformation at Delek US from 2020 to 2022 and Turnaround Manager at ExxonMobil Chemical from 2012 to 2014.
Brad Dobson
LinkedInExperience: Sr. Director Renewables Operations · Delek US
Brad Dobson is Sr. Director Renewables Operations at Delek US, a current role the profile dates from January 2008, based in Crossett, Arkansas. The profile headline also reads Sr. Director Renewables Operations at Delek US Holdings, Inc., and this is the only role shown in the work history.
Brian Ruff
LinkedInExperience: Vice President, General Manager - Tyler Refinery · Delek US
Brian Ruff has been Vice President, General Manager - Tyler Refinery at Delek US since July 2025, based in Tyler, Texas, and was Sr. Director, Production Assurance at Delek US from 2021 to 2025. Brian Ruff was Business Team Leader - Heavy Oil Processing at PBF Energy in 2021 and Production Unit Manager - Logistics at Shell in 2020.
D. Aaron Nash
LinkedInExperience: Senior Director, Refinery Operations · Delek US
D. Aaron Nash has been Senior Director, Refinery Operations at Delek US since June 2024, based in El Dorado, Arkansas, overseeing refinery operations there. D. Aaron Nash was Deputy Manager, Refinery Operations at TotalEnergies in 2024, Interim Senior Manager, Refinery Operations at TotalEnergies from 2023 to 2024 and a Gasoline Blender Scheduler at Phillips 66 from 2021 to 2022.
Devan Collie
LinkedInExperience: Director, Refinery Operations · Delek US
Devan Collie has been Director, Refinery Operations at Delek US since August 2023, based in Morganza, Louisiana, with a headline naming the Krotz Springs Refinery. At Delek US, Devan Collie was Manager, Refinery Operations from 2021 to 2023 and DCS Operator from 2013 to 2021, and was a railcar repairman at Union Tank Car Company from 2011 to 2013.
Joe Wiltz
LinkedInExperience: Sr. Director, Refinery Operations · Delek US
Joe Wiltz has been Sr. Director, Refinery Operations at Delek US since October 2026 and Director, Refinery Operations at Delek US since August 2021, based in Krotz Springs, Louisiana. At Delek US, Joe Wiltz was also Director Of Operations (Interim) in 2021 and IMS Specialist from 2020 to 2021.
John Thompson
LinkedInExperience: Vice President & General Manager · Delek US
John Thompson has been Vice President & General Manager at Delek US since June 2025, based in Greenwell Springs, Louisiana. At Delek US, John Thompson was Vice President & General Manager - Krotz Springs Refinery from 2019 to 2025, Vice President & General Manager - El Dorado Refinery in 2019 and Vice President, Operations Excellence (Refining) in 2019.
Joseph Israel
LinkedInExperience: Executive Vice President of Operations · Delek US
Joseph Israel has been Executive Vice President of Operations at Delek US since March 2023, based in Brentwood, Tennessee. Joseph Israel was President & CEO of Par Petroleum and Director & Senior Vice President of Par Pacific Holdings from 2015 to 2022, Senior Vice President at Hunt Refining Company from 2011 to 2014 and Chief Operating Officer at Alon USA from 2008 to 2011.
Mike Haggard
LinkedInExperience: VP, General Manager · Delek US
Mike Haggard has been VP, General Manager at Delek US since October 2024, based in Midland, Texas, with a profile headline naming the Big Spring Refinery. Mike Haggard was Regional Optimization Manager - MidCon at Phillips 66 from 2022 to 2024, Technical Manager at Phillips 66 from 2019 to 2022 and Business Manager at Phillips 66 from 2016 to 2019.
Choose the right perspective
Match the person's scope, such as one refinery, central technical services, reliability and maintenance or renewables operations, to the decision you face. Check when each person started the current role to judge how recent their view is.
Questions to take into the conversation
- 01What did you focus on first when you took on your current operations role?
- 02How do you balance turnaround schedules against keeping a refinery running at full rates?
- 03What has your own work taught you about building a strong safety culture across refinery shifts?
Reaching Delek US operations leaders
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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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