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Engineer III E and I

Job in Tulsa, Tulsa County, Oklahoma, 74101, USA
Listing for: HollyFrontier
Full Time position
Listed on 2026-07-02
Job specializations:
  • Engineering
    Chemical Engineer, Process Engineer
Job Description & How to Apply Below

Engineer III E and I

Conducts engineering duties for an assigned Engineering discipline and functions as a technical specialist, formulating and developing advanced engineering concepts.

Essential Job Duties/Responsibilities:

  • Provides discipline specific engineering assistance, direction and development assistance to colleagues
  • Solves technical problems related to projects and troubleshoots and updates report data for business unit(s)
  • Upgrades, designs, configures, maintains and monitors related equipment and performance
  • Analyzes related components and systems, processes and methods, and refinery processes and economics
  • Develops project scopes, budgets and AFEs for approval and ensures projects meet budget as well as refinery and OSHA standards
  • Ensures the maintenance and integrity of business unit(s) data
  • Optimizes business unit(s) and analyzes data to aid operations with decisions
  • Researches and stays abreast of assigned discipline subjects, innovations and leading edge developments
  • Develops systems to document and track the testing and assist in the maintenance of the various systems

Experience:

A minimum of five years of progressive work experience in a specific engineering discipline. A strong understanding of basic refinery processes and the elements of process safety is required for Process Safety Engineering discipline. Emphasis on power distribution and controls engineering is required of the electrical discipline depending on assignment. Professional Engineer registration is preferred. Refinery or petrochemical industry experience preferred.

Some or all of FCC, CCR, Alky, Sulfur unit, Delayed Coking, Lubes Processing and hydrotreating experience is preferred for Chemical discipline depending on assignment.

Education Level: A minimum of a Bachelors Degree in an Engineering discipline is required.

Required Skills:

Ability to manage a project is essential. Working knowledge of commonly used engineering concepts and ability to apply this knowledge analytically. Ability to stay abreast of new technology developments and processes is essential. Ability to communicate effectively with others, strong verbal communication skills, advanced level of reading and writing, ability to perform advanced mathematical calculations. Advanced ability to work effectively with multiple groups throughout the refinery.

Strong spreadsheet and word processing applications knowledge; strong interpersonal, time-management and organizational skills; ability to provide training to multiple groups on a variety of applicable assigned discipline topics. Knowledge of various process hazard analysis and root cause analysis methodologies is required for Process Safety Engineering discipline.

Physical Requirements:

Job conditions require standing, walking, sitting, talking or hearing, making visual inspections, lifting or carrying up to 50 lbs, climbing up to 200 ft, perceiving color differences, required to wear personal protective equipment as needed and a respirator in emergency situations (beards are not permitted), ability to operate and drive all assigned company vehicles at company standard insurance rates is essential, valid state drivers license and proof of insurance required.

Job conditions may require making precise hand and finger movements, twisting, stooping, crouching, kneeling, reaching or grasping, and working in confined spaces as permitted.

About HF Sinclair Corporation: HF Sinclair Corporation, headquartered in Dallas, Texas, is an independent energy company that produces and markets high-value light products such as gasoline, diesel fuel, jet fuel, renewable diesel and other specialty products. HF Sinclair owns and operates refineries located in Kansas, Oklahoma, New Mexico, Wyoming, Washington and Utah and markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states.

HF Sinclair supplies high-quality fuels to more than 1,500 branded stations and licenses the use of the Sinclair brand at more than 300 additional locations throughout the country. In addition, subsidiaries of HF Sinclair produce and market base oils and other specialized lubricants in the U.S., Canada and the Netherlands, and export products to more than 80 countries. Through its subsidiaries, HF Sinclair produces renewable diesel at two of its facilities in Wyoming and also at its facility in Artesia, New Mexico.

HF Sinclair provides petroleum product and crude oil transportation, terminalling, storage and throughput services to its refineries and the petroleum industry.

Equal Opportunity

Employer:

HF Sinclair Corporation is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status or any other prohibited ground of discrimination.

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