Associate Process Engineer
Motiva Enterprises
Port Arthur, TX · Posted November 2, 2026
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About the job
At Motiva, our employees’ energy, passion, and dedication to excellence are what make us who we are and what allows us to generate energy that makes a house a home, gets us from point A to point B, and enables our health and wellbeing. We invest in every aspect of our employees’ lives because, at Motiva, our people matter.
Headquartered in Houston, Texas, Motiva refines, distributes and markets petroleum products throughout the Americas. The company’s Port Arthur Manufacturing Complex in Port Arthur, TX, is comprised of North America’s largest refinery with a total throughput of 720,000 barrels per day, the largest base oil plant in the western hemisphere, and an integrated chemical plant. Under exclusive long-term brand licenses with Shell and Phillips 66 (for the 76® brand), Motiva’s commercial operations supply more than 12 billion gallons of fuel to customers annually. Motiva is wholly owned by Aramco, one of the world’s largest integrated energy and chemicals companies.
Position Overview:
Motiva is seeking an Associate Process Engineer to join the Port Arthur Manufacturing Complex. The Associate Process Engineer designs, optimizes, and maintains refinery processes to ensure efficient operation and production. This role analyzes data, troubleshoots issues, and implements improvements to ensure excellence in process safety, reliability, energy consumption, and cost management. The Associate Process Engineer utilizes daily proactive monitoring and works closely with business teams to ensure product plan delivery.
Responsibilities:
Provide daily proactive technical monitoring and troubleshooting for assigned areas.
Provide guidance around daily unit optimization as it relates to product yields and quality, catalyst life, equipment health, chemical usage, energy consumption, alarm management, emissions calculations, and economics.
Routinely conduct and document unit mass balance monitoring.
Utilize Causal Learning methodology for problem solving and participate in investigations.
Lead and participate in Process Safety Management work practices such as Management of Change and Process Hazard Analysis.
Identify opportunities for margin and energy improvements and drive changes to capture these opportunities via established work processes.
Provide process engineering support for turnaround (TA) planning and execution to ensure reliability and TA objectives are met.
Provide support to capital projects to ensure proper implementation and performance when integrated into existing operating units and systems.
Provide monthly technical assurance reporting to Motiva stakeholders.
Provide “off hour” and “around the clock” shift coverage for planned unit shutdowns and unplanned unit upsets.
Experience and Qualifications:
Basic Qualifications
Must have a Bachelor's degree in Chemical Engineering by December 2026
Cumulative 3.0 GPA, or higher
Excellent organizational and planning skills
Excellent analytical and problem-solving skills
Effective communication with all levels of organization
Effective teamwork in cross-functional situations
Preferred Qualifications
1-3 years of relevant process engineering experience
Physical Requirements:
Due to safety sensitive nature of job, must pass annual respirator fit testing
Move up to 40 pounds by lifting, carrying, pushing, pulling, or otherwise repositioning objects
Ability to reach all work areas in the plant (i.e. climb ladders, negotiate catwalks, handle heights to 50 feet, etc.)
Ability to wear Personal Protective Equipment (PPE) in designated areas (respirator, hard hat, safety glasses, gloves, heeled boots, and hearing protection)
We reserve the right to amend or withdraw Motiva jobs at any time, including prior to the closing date. Depending on qualifications, the successful candidate may be offered a position at a more appropriate level and/or grade.
Applicants for regular U.S. positions must be authorized to work in the United States for Motiva Enterprises LLC without the need for sponsorship of an immigration authorization or visa (for example, TN, H-1B, or other employment-based immigration authorization or visa).
Motiva participates in E-Verify.
All qualified applicants will receive consideration for employment without regard to race, color, sex, national origin, age, religion, disability, sexual orientation, gender identity, protected veteran status, citizenship, genetic information, or other protected status under federal, state, or local laws.