John Stefko
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John Stefko Email & Phone Number

General Manager at Marathon Petroleum Corporation
Location: Findlay, Ohio, United States 8 work roles 1 school
3 work emails found @marathonpetroleum.com 2 phones found area 248 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 3 work emails · 2 phones

Work email j****@marathonpetroleum.com
Direct phone (248) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Marathon Petroleum Corporation
Role
General Manager
Location
Findlay, Ohio, United States

Who is John Stefko? Overview

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Quick answer

John Stefko is listed as General Manager at Marathon Petroleum Corporation, based in Findlay, Ohio, United States. AeroLeads shows a work email signal at marathonpetroleum.com, phone signal with area code 248, and a matched LinkedIn profile for John Stefko.

John Stefko previously worked as Martinez Renewable Fuels Program Director at Marathon Petroleum Corporation and Refining Asset Development Director at Marathon Petroleum Corporation. John Stefko holds Bs, Chemical Engineering from University Of Michigan.

Company email context

Email format at Marathon Petroleum Corporation

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{first_initial}{last}@marathonpetroleum.com
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AeroLeads found 3 current-domain work email signals for John Stefko. Compare company email patterns before reaching out.

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Profile bio

About John Stefko

John Stefko is a General Manager at Marathon Petroleum Corporation. He possess expertise in chemical engineering, refining, refinery, engineering, process engineering and 9 more skills.

Listed skills include Chemical Engineering, Refining, Refinery, Engineering, and 10 others.

Current workplace

John Stefko's current company

Company context helps verify the profile and gives searchers a useful next step.

Marathon Petroleum Corporation
Marathon Petroleum Corporation
General Manager
MOKENA, Illinois
Website
exxonmobilpipeline.com
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Company profile
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8 roles

John Stefko work experience

A career timeline built from the work history available for this profile.

Project Manager Of Detroit Expansion Project

Marathon Petroleum Corporation

Findlay, Ohio, Us

Managed a team of 120 members that successfully completed the $300 MM Detroit Expansion Project in 2005.

Jan 2001 - Dec 2005
Team & coworkers

Colleagues at Marathon Petroleum Corporation

Other employees you can reach at exxonmobilpipeline.com. View company contacts →

DT David Tran, P.E. David Tran, P.E. Colleague at Marathon Petroleum CorporationOrange, California, United States View → RD Rigoberto Diaz Rigoberto Diaz Colleague at Marathon Petroleum CorporationCarlsbad, New Mexico, United States View → SI Saqib Ismail Saqib Ismail Colleague at Marathon Petroleum CorporationGreater Houston, United States View → SG Shelly Garcia Underwood Shelly Garcia Underwood Colleague at Marathon Petroleum CorporationSan Antonio, Texas, United States View → MP Melisia Padilla Perez Melisia Padilla Perez Colleague at Marathon Petroleum CorporationConverse, Texas, United States View → BS Bill Shedd Bill Shedd Colleague at Marathon Petroleum CorporationSan Antonio, Texas Metropolitan Area, United States View → MD Matthew Downs Matthew Downs Colleague at Marathon Petroleum CorporationAnaheim, California, United States View → RC Ryan Caya Ryan Caya Colleague at Marathon Petroleum CorporationMandan, North Dakota, United States View → JS Jesse Stanger Jesse Stanger Colleague at Marathon Petroleum CorporationNew Richmond, Wisconsin, United States View → LD Lauren Dishong Lauren Dishong Colleague at Marathon Petroleum CorporationMccomb, Ohio, United States View →
1 education record

John Stefko education

  • University Of Michigan
    University Of Michigan
    Chemical Engineering
FAQ

Frequently asked questions about John Stefko

Quick answers generated from the profile data available on this page.

What company does John Stefko work for?

John Stefko works for Marathon Petroleum Corporation.

What is John Stefko's role at Marathon Petroleum Corporation?

John Stefko is listed as General Manager at Marathon Petroleum Corporation.

What is John Stefko's email address?

AeroLeads has found 3 work email signals at @marathonpetroleum.com for John Stefko at Marathon Petroleum Corporation.

What is John Stefko's phone number?

AeroLeads has found 2 phone signal(s) with area code 248 for John Stefko at Marathon Petroleum Corporation.

Where is John Stefko based?

John Stefko is based in Findlay, Ohio, United States while working with Marathon Petroleum Corporation.

What companies has John Stefko worked for?

John Stefko has worked for Marathon Petroleum Corporation.

Who are John Stefko's colleagues at Marathon Petroleum Corporation?

John Stefko's colleagues at Marathon Petroleum Corporation include David Tran, P.E., Rigoberto Diaz, Saqib Ismail, Shelly Garcia Underwood, and Melisia Padilla Perez.

How can I contact John Stefko?

You can use AeroLeads to view verified contact signals for John Stefko at Marathon Petroleum Corporation, including work email, phone, and LinkedIn data when available.

What schools did John Stefko attend?

John Stefko holds Bs, Chemical Engineering from University Of Michigan.

What skills is John Stefko known for?

John Stefko is listed with skills including Chemical Engineering, Refining, Refinery, Engineering, Process Engineering, Petroleum, Petrochemical, and Root Cause Analysis.

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