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Location Name: San Antonio, TX 
Job/Requisition ID: 56557 
Location Address: 19100 Ridgewood Park, San Antonio, TX, United States (US), 78259
Education Level: Bachelor's Required 
Relevant Experience Level: Mid Career (4-10 Years) 
Employee Group: Regular - Full Time
Employee Subgroup: Salaried Exempt



Conduct day-to-day Marine Assurance vetting vessels, marine terminals, marine service providers, and vessel technical operators. Marathon vets approximately 1,400 tankers, barges, tugs and bulk carriers annually. The successful candidate will be part of the marine team working collaboratively with operations, commercial, external customers and vendors.



•    Assess marine vessels to the company standard and recommend for approval or rejection
•    Conduct ship and barge verifications against published Oil Company International Marine Forum (OCIMF) Tanker Management Self-Assessment (TMSA) completed by vessel technical operators
•    Collect, review and update information on domestic and international ports/terminal/berths and Ship to Ship (STS) transfer positions
•    Assist refining and marine terminal personnel with completion of OCIMF Marine Terminal Management Self-Assessment (MTMSA) and Marine Terminal Particulars Questionnaire (MTPQ) 
•    Conduct verifications against OCIMF MTMSA completed by third-party marine terminals 
•    Conduct verifications against the OCIMF Ship to Ship Service Provider Management Self- Assessment (STSSPMSA) completed by STS Service Provider Companies 
•    Board and attend vessels 24/7/365 at company, third party terminals and STS locations 
•    Act as safety role model promoting safety awareness. 
•    Provide marine subject matter expertise and technical support to refinery and terminals 
•    Member of Marine Crisis Management and Incident Investigation Teams
•    Own and manage relationships with U. S. Coast Guard, state, local regulatory agencies, and industry peers
•    Represent Marathon Petroleum Company at marine industry forums.


Education and Experience  
•    Bachelor’s degree from a Maritime, Coast Guard, or Naval Academy 
•    Deck or Engineering license or equivalent military experience
•    4 years of sea time or equivalent experience e.g. Port Captain, Port Engineer, military
•    Knowledge of OCIMF, Class rules, and international regulations for the operation and construction of ships and barges 
•    Knowledge of Petroleum transportation 
•    Ability to travel on short notice and attend vessels at various locations
•    Must have valid passport and able to travel domestically and internationally


About Marathon Petroleum Corporation


Marathon Petroleum Corporation (MPC) is a leading, integrated, downstream energy company headquartered in Findlay, Ohio. The company operates the nation's largest refining system with more than 3 million barrels per day of crude oil capacity across 16 refineries. MPC's marketing system includes branded locations across the United States, including Marathon brand retail outlets. Speedway LLC, an MPC subsidiary, owns and operates retail convenience stores across the United States. MPC also owns the general partner and majority limited partner interests in two midstream companies, MPLX LP and Andeavor Logistics LP, which own and operate gathering, processing, and fractionation assets, as well as crude oil and light product transportation and logistics infrastructure.

Travel Expected:


Marathon Petroleum Company LP is an Equal Opportunity Employer and gives consideration for employment to qualified applicants without discrimination on the basis of race, color, religion, creed, sex, gender (including pregnancy, childbirth, breastfeeding or related medical conditions), sexual orientation, gender identity, gender expression, age, mental or physical disability, medical condition or AIDS/HIV status, ancestry, national origin, genetic information, military, veteran status, marital status, citizenship  or any other status protected by applicable federal, state, or local laws.  If you would like more information about your EEO rights as an applicant, click here.

If you need a reasonable accommodation for any part of the application process at Marathon Petroleum LP, please contact our Human Resources Department at Please specify the reasonable accommodation you are requesting, along with the job posting number in which you may be interested. A Human Resources representative will review your request and contact you to discuss a reasonable accommodation.

Equal Opportunity Employer: Veteran / Disability

Marathon Petroleum Company LP participates in the E-Verify program in some states in which it operates (including AL, AZ, GA, MS, NC, SC, TN, and UT). For more information before proceeding, please see details in English or Spanish. Right to Work Statement English or Spanish.

Nearest Major Market: San Antonio

Job Segment: Engineer, Technical Support, Engineering, Technology