Mechanical Integrity Engineer

Overview

At Hemlock Semiconductor (HSC), we transform people’s lives by energizing and connecting our world through silicon technology. Since 1961, HSC has been a leading global provider of hyper-pure polysilicon and is the only polysilicon manufacturer headquartered in the United States. HSC serves the semiconductor and solar industries and aims to be the preferred supplier of silicon-enabled technologies to the low-carbon, digital world.

Our polysilicon is used to make computer chips—the “brains” behind electronic devices. HSC is one of six major polysilicon manufacturers worldwide and nearly all electronic devices contain our polysilicon. We are also advancing the solar power industry and are committed to reducing supply chain carbon emissions. Our products help lower the embodied carbon of solar projects by up to 50 percent.

To achieve our goals, we employ more than 1,500 people and contractors. Our culture values teamwork, excellence, responsibility and customer focus, and we strive for diversity and inclusion as One Team at HSC.

The Mechanical Integrity Engineer will join our integrity and reliability team serving the Semiconductor industry. Ideally, the candidate has American Petroleum Institute (API) and Non-Destructive Testing (NDT) experience. This role focuses on ensuring safe and reliable operation of pressure equipment through re-rating calculations, NDT evaluations, and API code compliance. The candidate will have a strong background in mechanical integrity programs, field inspection, and engineering analysis in industrial plant environments.

• Perform pressure equipment re-rates and fitness-for-service assessments per API 579, ASME Section VIII, and B31.3.
• Conduct and interpret NDT examinations (UT, MT, PT, RT, VT, etc.) to determine equipment condition and corrosion rates.
• Develop and maintain API inspection programs (API 510 – Pressure Vessels, API 570 – Piping, API 653 – Tanks).
• Prepare and review inspection reports, corrosion analyses, and repair recommendations.
• Collaborate with operations, maintenance, and reliability teams to develop inspection plans and turnaround strategies.
• Evaluate remaining life, thickness calculations, and material integrity for fixed equipment in service.
• Support Mechanical Integrity (MI) and Risk-Based Inspection (RBI) initiatives to improve plant reliability and safety.
• Provide technical guidance to inspectors, NDT technicians, and plant personnel regarding API code interpretation and best practices.
• Ensure all work is performed in compliance with regulatory standards (OSHA, API, ASME, National Board) and company safety policies.

• Strong communication, analytical, and problem-solving abilities.

Bachelor's Degree in Engineering

API certifications are strongly preferred or willing to obtain: API 510, API 570, and/or API 653.

• Familiarity with ASNT methods in UT, MT, PT, RT, or other relevant NDT disciplines is preferred.
• Strong working knowledge of API, ASME, and NBIC codes.
• Proficient in inspection management and calculation software (e.g., PCMS, Ultrapipe, AutoPIPE, or equivalent).
• Excellent communication, report writing, and problem-solving skills, with decisive decision making.

• Bending – Occasional
• Climbing – Occasional
• Crawling – Occasional
• Driving – Occasional
• Hand Movement – Frequent
• Heavy Lifting (up to 100 pounds) – Rare
• Kneeling – Occasional
• Light to Medium Lifting – Occasional to Rare
• Push/Pull – Rare
• Reaching, Repetition, Standing, Walking – Occasional

The range for this position is $97,360.00 - $ annually for full-time status. Starting pay is dependent on factors including market demands, experience, training, and education. Benefits may include medical, dental, vision, 401(k), variable bonus, life insurance, disability benefits, and PTO, contingent on hours worked.

HSC is an equal employment opportunity employer. All qualified applicants will be considered without regard to race, color, religion, sex, national origin, age, protected veteran status, disability, marital status, pregnancy, sexual orientation, ancestry, genetic information, or any other characteristic protected by law.

If you are an individual with a disability and need an accommodation or other assistance during the application process, please call the Human Resources Department at  or email

All qualified applicants are encouraged to apply. Req No. 1162