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Administrative Assistant


Job Location:

Detroit, MI - USA

Monthly Salary: Not provided by the employer
Posted: 13 July 2026 (30+ days ago)
Application Deadline: 10 October 2026
Vacancies: 1 Vacancy

Job Summary

An exciting career awaits you


At MPC were committed to being a great place to work one that welcomes new ideas encourages diverse perspectives develops our people and fosters a collaborative team environment.

POSITION SUMMARY:

The Marathon Detroit Refinery has an opening for an on-site Administrative Assistant position. This position will proactively provide a full range of administrative support to the Detroit Refinery Environmental Safety and Security Department.

KEY RESPONSIBILITIES:

The successful candidate will be able to carry out assigned responsibilities with minimal guidance while balancing the broad varied and sometimes complex needs of multiple individuals and work groups. This individual must demonstrate a strong ownership mindset attention to detail and commitment to accurate high-quality work including the ability to review information carefully identify potential issues early and follow applicable refinery and company procedures. The candidate must be able to manage multiple organizational needs and priorities in a calm professional confidential and confident manner while maintaining a positive service-oriented attitude. Strong verbal and written communication skills are essential including the ability to communicate promptly clearly and professionally with internal and external stakeholders. The candidate must be a collaborative team player who treats others with dignity and respect willingly supports and backs up other administrative assistants and department personnel and contributes to the overall goals of the refinery. The successful candidate will be highly self-motivated organized dependable and adaptable with strong interpersonal skills a continuous-improvement mindset and a willingness to learn share information and help improve department processes and systems.

  • Support refinery initiatives and priorities
  • Maintain and operate office equipment and order office supplies
  • Coordinate invoice processing
  • Submit work notifications
  • Perform a variety of administrative duties toensurethe efficient operation of the office and refinery.
  • Schedule plan and organize all logistical details for in-house and off-site meetings conferences etc. as needed.
  • Prioritizeworkeffectivelymeet deadlines while anticipating needs and requirements. Proactively support the assigned leader(s) in all assigned responsibilities take direction from multiple staff members andbalance the needs of the group.
  • Manage the departments vacation calendar coordinate team calendars schedules and coordinate logistics for internal and external meetings.
  • Effectively partner and coordinate meetings with third party strategic partners.
  • Distribute electronically routine and ad-hoc communications to refinery employees and key stakeholders.
  • Schedule monthly safety meetings for all operations and maintenance crafts.
  • Lead/assist with committees that coordinate on and off-site employee engagement.
  • Handle confidential data and matters in a discreet and professional manner.
  • Work as a team player with other assistants and teams.
  • Manage/track various safety inspections and work orders.
  • Perform special project tasks as required.
  • Assist with onboarding of new refinery employees.
  • Assist with providing oversite to refinery PPE programs and act as liaison between MPC and suppliers.

EDUCATION AND EXPERIENCE:

  • Must have a high school diploma or GED required.
  • 2 years of administrative assistant experience or related experience preferred.
  • Must be proficient in Microsoft: Word Excel PowerPoint and Outlook.
  • Must be able to wear appropriate PPE in the refinery be able to physically perform all tasks and take hair drug test and physical.
  • Must have a valid drivers license.
  • Travel Requirement is 5% or less.
  • The available work schedules for this on-site position are 9/80 or 5/40.

SKILLS:

  • Strong verbal and written communication skills.
  • Excellent interpersonal skills and a preference for collaboration including proven success working with others; ability to work with high profile individuals internally and externally.
  • Ability to workin a fast-paced and sometimes unpredictable environment; be proactive; work well under pressure and tight deadlines; proven ability to juggle multiple projects.
  • Ability to learn new software and computer programs as the needs of the department and the refinery shift.
  • Proven analytical and problem-solving abilities.
  • Demonstrate commitment to continuous improvement information accuracy and supporting a safety focused work environment.
  • Highly organized detail-oriented and self-motivated.
  • Flexible and willing tohelp outthe team when requested.

As an energy industry leader our career opportunities fuel personal and professional growth.

Location:

Detroit Michigan

Additional locations:

Job Requisition ID:

Location Address:

13501 Oakwood

Education:

Employee Group:

Full time

Employee Subgroup:

Regular

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 reproductive health decision-making 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. Marathon Petroleum offers a total rewards program which includes but is not limited to access to health vision and dental insurance paid time off 401k matching program paid parental leave and educational reimbursement. Detailed benefit information is available at.The hired candidate will also be eligible for a discretionary company-sponsored annual bonus program.

Equal Opportunity Employer: Veteran / Disability

We will consider all qualified Applicants for employment including those with arrest or conviction records in a manner consistent with the requirements of applicable state and local reviewing criminal history in connection with a conditional offer of employment Marathon will consider the key responsibilities of the role.


Required Experience:

Junior IC