Process Engineer - Semiconductor Manufacturing in Saint George

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Job DescriptionJob Description

Process Engineer – Semiconductor Manufacturing Location: St. George, Utah Type: Full-time, Salaried

Overview

5N Plus is a global leader in the production of engineered materials and specialty chemicals with facilities in North America, Europe and Asia, delivering critical components for advanced technologies in industries such as aerospace, medical imaging, infrared sensing, and renewable energy. At our state-of-the-art facility in St. George, Utah, we manufacture high-purity semiconductor materials used in some of the world's most demanding environments, including satellites, provide high-definition medical imaging and infrared vision.

We are seeking a Process Engineer with a strong mechanical engineering background to join our manufacturing team. This role will focus on the design, optimization, and support of semiconductor wafer manufacturing processes, high-purity metals refining, and the development and improvement of custom-built production equipment. The ideal candidate will combine mechanical design expertise with a passion for solving complex engineering challenges in a high-tech manufacturing environment.

Why work for 5N Plus

• Work with cutting-edge technologies in a global company
• Excellent benefits and a 401(k) match
• Supportive team culture with a commitment to safety, quality, and innovation
• Opportunities for growth, learning, and development

5N Plus Semiconductors is an equal-opportunity employer. We are committed to building a diverse and inclusive workplace. All qualified applicants will receive consideration without regard to , , , , , , , , or veteran status.

Key Responsibilities

Mechanical Process Development & Optimization

• Develop, refine, and implement manufacturing processes for semiconductor wafer production, from crystal growth to final wafer preparation.
• Optimize process equipment performance through mechanical redesign, component upgrades, and control system improvements.
• Design and validate tooling, fixtures, and automation systems to enhance throughput, precision, and repeatability.

Machine Building & Equipment Engineering

• Lead design, modification, and integration projects for custom manufacturing equipment.
• Collaborate with vendors and in-house teams to build or retrofit machines for high-precision manufacturing.
• Apply mechanical engineering principles to improve durability, ease of maintenance, and operator safety.

High-Purity Metals Refining Support

• Develop and improve mechanical systems for high-purity metals refining processes.
• Support material handling, casting, and forming operations with engineered solutions.
• Work closely with process engineers to ensure mechanical systems meet cleanliness and contamination control requirements.

Process Monitoring & Control

• Track and analyze mechanical performance and process parameters (pressure, force, temperature, vibration, etc.).
• Implement statistical process control and equipment reliability monitoring systems.

Project Execution

• Lead projects from concept through installation and commissioning.
• Collaborate cross-functionally to integrate mechanical systems with chemical, thermal, and electrical process requirements.
• Manage timelines, budgets, and vendor relationships.

Quality & Safety

• Maintain product quality standards through inspections, measurements, and documented procedures.
• Ensure compliance with environmental, health, and safety standards, with a proactive risk-reduction approach.
• Conduct mechanical root cause analysis and implement corrective actions.

Technical Leadership

• Mentor technicians and junior engineers in mechanical troubleshooting, machine design, and process control.
• Provide mechanical expertise for cross-functional problem-solving teams.

Required Qualifications

• Bachelor's degree in Mechanical Engineering (or closely related discipline)
• 5+ years of engineering experience in semiconductor manufacturing, precision machining, high-purity metals refining, or other high-tech process industries
• Proven success in process equipment optimization and mechanical system reliability
• Proficiency in CAD design and mechanical modeling software
• Strong understanding of statistical process control and equipment performance analysis
• Excellent problem-solving, troubleshooting, and root cause analysis skills
• Ability to work in a cleanroom environment and follow strict contamination control protocols
• Capability to lift and handle up to 25 pounds regularly, and occasionally up to 50 pounds

Qualifications

• Master's degree in Mechanical Engineering or related field
• Experience with wafer manufacturing, crystal growth, or CMP (Chemical Mechanical Planarization)
• Six Sigma or Lean Manufacturing certification
• Experience in precision motion control, vacuum systems, or vibration control
• Project management experience in capital equipment upgrades or machine building
• Familiarity with automation and integration of mechanical systems in manufacturing

Work Environment & Physical Requirements

• Cleanroom environment requiring proper gowning (cleanroom suit, hood, booties)
• Use of appropriate PPE when working with specialized materials
• Regular standing, reaching, and fine mechanical assembly work
• Occasional requirement to stoop, kneel, crouch, or climb ladders
• May occasionally require respirator use

Company Values We expect all team members to demonstrate:

• Proactive commitment to Environmental, Health & Safety
• Ownership, integrity, urgency, and attention to detail
• Collaboration, professionalism, and open communication
• Continuous improvement mindset and celebrating team successes

Schedule & Benefits

• Monday through Friday, 40+ hours per week
• On-call rotation for production support (24/7)
• Flexibility for overtime during high-volume periods
• Comprehensive medical, dental, and vision coverage
• 401(k) with company match
• Paid time off, holidays, and performance bonus opportunities
• Professional development support and training

5N Plus values flexibility and teamwork. While this job description outlines primary duties, qualifications, and job scope, we expect each associate to offer their services wherever and whenever necessary to ensure the success of our endeavors.

Join our team of innovators and help shape the future of semiconductor technology!

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