Title:  Chemist

Date:  Feb 6, 2024

Casper, WY, US, 82604

Basic Function

Conducts non-routine to complex chemistry/laboratory assignments for assigned Department under minimal supervision. May lead the work of others depending on location.

Job Duties

  • Samples and conducts all levels of tests and trains others to perform standard tests on raw materials, intermediates, and finished products.
  • Ensures proper sample management including sampling, maintaining sample integrity, and sample retains.
  • Ensures testing is carried out per established methods/procedures.
  • Ensures quality of work through quality assurance testing and documentation, and analysis.
  • Records, reports, and certifies results.
  • Develops new methods/procedures.
  • Maintains and continuously improves SQC program including precision and accuracy charting and proficiency testing. 
  • Performs routine to complex and corrective maintenance and calibrations on laboratory equipment.
  • Controls data management and record-keepoing.
  • Performs audits of lab quality system.
  • Ensures regulatory compliance.
  • Maintanins and improves LIMS data management system. 

May also perform other duties, including:

  • Works with outside testing laboratories to coordinate special requests and compliance testing.
  • Monitors process control of plant streams, purity of products and composition of fuel gases, liquefied petroleum products, and various levels of Hydrogen.
  • Provides support to operations with product blending.
  • Provides support documentation for product quality disputes.

Special assignments or tasks assigned to the employee by their supervisor, as determined from time to time in their sole and complete discretion.


A minimum of five years of on-the-job experience is required.

Education Level

A minimum of a Bachelor's Degree of Science in Chemistry or related field is required.

Required Skills

Advanced knowledge of laboratory testing and ability to apply this knowledge. Working knowledge of petroleum products and testing. Ability to train and lead the work of others. Ability to perform advanced mathematical calculations, intermediate reading and writing skills, ability to effectively communicate with others, both written and verbal communication.

Supervisory/Managerial Responsibility

May lead the work of others regularly. May be designated as relief lab supervisor if needed.

Work Conditions

Office based with occasional refinery visits, and with up to 10% travel by land and air required. Petroleum refinery/industrial environment including but not limited to chemicals, pressure vessels, tanks, and rotating equipment. Subject to all weather, and varying road conditions.

Physical Requirements

Job conditions require standing, making visual precise hand and finger movement, making visual inspections, reaching or grasping, wearing personal protective equipment (beards not permitted). Job conditions may require walking, sitting, twisting, stooping, crouching, kneeling, talking or hearing, lifting and/or carrying up to 10lbs, pushing and/or pulling up to 10lbs, and perceiving color difference.

Our One HF Sinclair Culture:

At HF Sinclair, we are united through our One HF Sinclair Culture, which is underpinned by our five core values of Safety, Integrity, Teamwork, Ownership and Inclusion. Developed to empower our people, our five core cultural values are at the heart of everything we do and extend to how we engage our stakeholders. These values influence our decisions, shape our behaviors and keep us connected across the entire organization.

We maintain a true Safety culture for our employees, communities, environments and customers. Our goal is to make sure everyone returns home safely each day. We have a long-standing commitment to Integrity and ethical behavior and do what is right for our employees, investors, communities and the environment. We encourage employees to Step Up and Stand Out by championing a culture of Teamwork and Ownership. We foster a culture of Inclusion by encouraging diversity of experiences, viewpoints and backgrounds. What makes each of us different, together makes us stronger.

About HF Sinclair Corporation

HF Sinclair Corporation ("HF Sinclair"), 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 in 19 states 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 1,300 Sinclair 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. HF Sinclair also owns a 47% limited partner interest and a non-economic general partner interest in Holly Energy Partners, L.P., a master limited partnership that provides petroleum product and crude oil transportation, terminalling, storage and throughput services to the petroleum industry, including HF Sinclair subsidiaries.

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.

Nearest Major Market: Wyoming
Nearest Secondary Market: Casper