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Location Name: MWLS Denver CO
Location Address: 1515 Arapahoe St Twr1 Ste 1600, Denver, CO, United States (US), 80202
Education Level: Bachelor's Required 
Relevant Experience Level: Senior (11+ Years) 
Employee Group: Regular - Full Time
Employee Subgroup: Salaried Exempt



The SR IT Internal Auditor is an important member of the Internal Audit team and is responsible for performing audits evaluating and testing MarkWest’s information system (IS) control environment and review of internal controls within computer applications, technology infrastructure, and developing systems. This position will focus on technology infrastructure and on application related controls. Technology infrastructure can include Mainframe, Windows, UNIX, VMWare ESX, SQL, Oracle, SAP, business and process control networks. The application systems may include financial and operational processes, Sarbanes-Oxley (SOX) control testing and regulatory compliance reviews for MPC and MPLX. The Internal Audit group operates under a team concept with personnel assigned to projects based on project priority and individual availability.





Perform assigned audits as both an individual contributor and work product reviewer in accordance with accepted standards. Audit teams are comprised of a Lead Auditor and Staff Auditors with specific responsibilities varying by the assigned role on each audit as noted below.


Staff Auditor:

•Conducts interviews with auditees to ensure a thorough understanding of the business process and controls gaining an understanding of the IT/IS operations, assesses the internal computing controls, and performs tests to ensure the controls are working as intended.

•Evaluates the internal controls within existing computer applications and technology infrastructure and performs Advisory Reviews on major system upgrade projects prior to implementation management and tracking system.

•Meets with client management to discuss concerns and works with management in developing practical action plans to improve controls.

•Determines if additional risks, not identified on the Risk and Control Matrix (RACM) or similar document, should be reviewed with the Lead Auditor for potential inclusion in the audit scope

•Designs and documents an appropriate test plan to address all risks assigned by the Lead Auditor

•Uses data analytics (ACL, IDEA, Excel, etc) to select the optimal samples for testing; documents all testing results logically, concisely, and with appropriate levels of coaching to support conclusions reached on control effectiveness. 


Lead Auditor:

•Schedules and completes business unit interviews to ensure all risks are appropriately identified, risk ranked, and articulated on the RACM or similar document

•Ensures identified high and medium risk business processes are added to the audit plan for testing and that those tests are equitably allocated to the audit staff for timely completion

•Ensures the audit remains on track for completion within the designated time frame and is executed in accordance with IIA and departmental standards

•Acts as a mentor to the less experienced auditors on the team

•Ensures a positive work environment is maintained within the team

•Keeps the auditee and the Internal Audit Manager updated on the audit status

•Ensures the exit meeting documentation is complete and accurate

•Ensures draft audit reports submitted for the Internal Audit Manager's review are complete, accurate and written in conformity with departmental standards. 









•Bachelor's degree required; Preferably in Computer Science or Management Information Systems.

•Minimum of 2 years of audit experience preferred

•CPA or CIA preferred, but not required

•Highly motivated and team-oriented

•Excellent organizational skills

•Detail-oriented and strong analytical skills

•Excellent written and verbal communication skills

•Proficient in the use of Microsoft Office products

•Flexible to work overtime during peak periods as needed

•Ability to travel up to 20%



Physical Demands:

Requires sitting throughout most of the day, interspersed with short trips throughout the office as needed to file, print, etc.


Working Environment:

Primarily works in an office environment.


Materials and Equipment Used:

Personal computer, 10-key, phone, fax, scanner and copier.

About Marathon Petroleum Corporation

Headquartered in Findlay, Ohio, Marathon Petroleum Corporation (MPC), together with its subsidiaries, including Marathon Petroleum Company LP and Speedway LLC, is one of the largest petroleum product refiners, marketers and transporters in the United States.

MPC is the nation’s third-largest refiner and the largest refiner in the Midwest. MPC’s refining, marketing and transportation operations are concentrated primarily in the Midwest, Northeast, East Coast, Southeast and Gulf Coast regions of the U.S.

MPC operations are strategically located to serve major markets. They include a seven-plant refining network, a comprehensive terminal and transportation system, and extensive wholesale and retail marketing operations. This includes both the Marathon brand and MPC’s wholly owned retail marketing subsidiary, Speedway LLC, the nation’s second-largest chain of company-owned and -operated retail gasoline and convenience stores.


Job Function: MarkWest
Travel Expected: Up to 25%


If you have visited our site in search of information on U.S. employment opportunities and require an accommodation to submit your application, please contact the MPC EEO/Compliance Office at 866-492-7802. Note that we only accept resumes and applications for posted positions.

Marathon Petroleum Company LP (“MPC”) is an equal employment opportunity employer.  All applicants will be considered without regard to their race, color, religion, sex, age, disability, national origin, sexual orientation, genetic information, gender identity, veteran status or other legally protected status.

Nearest Major Market: Denver

Job Segment: Audit, ERP, Database, Mainframe, Oracle, Finance, Technology

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