Chemist Intern

Sonneborn, an HF Sinclair company, is seeking a motivated Chemist Intern to join our team. This position will support the Manufacturing Technology Department by conducting routine chemistry/laboratory assignments for the department. The intern will work under close and frequent supervision while gaining hands‑on experience in laboratory programs and operations.

• Collect, prepare, and test samples of raw materials, intermediates, and finished products using established methods and procedures.
• Perform routine laboratory testing and accurately document results.
• Assist with reviewing laboratory records and verifying testing documentation.
• Perform routine maintenance and calibration of laboratory equipment.
• Support other departments with sampling, testing, and compliance monitoring activities.
• Prepare and ship samples designated as hazardous materials in accordance with established procedures.
• Maintain accurate laboratory records and follow applicable safety, quality, and operating procedures.

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

Some completed courses needed for a Bachelor’s Degree in Chemistry or related field are required.

• Basic knowledge of Chemistry concepts.
• Ability to apply knowledge analytically.
• Stay abreast of new technological developments and processes.
• Proficient in Microsoft Office products.
• Experience with statistical analysis of data.

Petroleum refinery and driver-based environment including but not limited to chemical, pressure vessels, tanks, rotating equipment, working in confined spaces, and exposure to risk of electrical shock. Subject to all weather and varying road conditions.

Job conditions require standing, walking, sitting, talking or hearing, making visual inspections, making precise hand and finger movements, lifting or carrying up to 50 lbs., climbing up to 200 ft, perceive color differences, required to wear personal protective equipment as needed and a respirator in emergency situations. Depending on location, you must satisfactorily complete a comprehensive medical physical examination. Job conditions may require twisting, stooping, crouching, kneeling, reaching or grasping, and working in confined spaces as permitted.

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.

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 lubricants and specialty products. HF Sinclair owns and operates refineries located in Kansas, Oklahoma, New Mexico, Wyoming, Washington and Utah. HF Sinclair provides petroleum product and crude oil transportation, terminalling, storage and throughput services to our refineries and the petroleum industry. HF Sinclair markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states and supplies high-quality fuels to more than 1,750 branded stations and licenses the use of the Sinclair brand to more than 350 additional locations throughout the country. HF Sinclair produces renewable diesel at two of its facilities in Wyoming and also at its facility in New Mexico. 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.