Quality Engineer | Mountain Pass, CA

Mineral Processing and Metallurgy
California, United States
March 28, 2026
$120,000 - $150,000 / year
Full-time
Apply Now

Job Description

Company: MP Materials

Location: Mountain Pass, California, United States (On-Site)

Category: Mineral Processing and Metallurgy

Job Type: Full-time

Experience Level: Mid-Level

Job Summary
MP Materials is seeking a Quality Engineer to support process quality, product consistency, and Quality Management Systems (QMS) within mining and processing operations.

This role focuses on driving data-driven quality improvements, ensuring compliance with ISO standards, and supporting plant performance.

Key Responsibilities

  • Implement and maintain Quality Management Systems (QMS)
  • Ensure compliance with ISO 9001 and internal quality standards
  • Collaborate with process engineering and operations teams to ensure product quality
  • Track process inputs and outputs to maintain on-spec production
  • Lead internal and external audit programs
  • Manage corrective and preventive actions (CAPA) from audits and non-conformities
  • Maintain and update quality documentation and procedures
  • Support management review processes and reporting
  • Drive continuous improvement in quality systems and plant processes

Qualifications
– Bachelor’s or Master’s degree in Chemical Engineering or related field
– 3+ years of experience in quality systems within industrial or manufacturing environments

Additional Experience May Include

  • ISO 9001 Lead Auditor certification
  • Experience in chemical plants or mineral processing environments
  • Experience with QMS software systems
  • Knowledge of Lean, Six Sigma, and root cause analysis

What We Can Offer You

  • Salary: $120,000 – $150,000 annually
  • Medical, dental, and vision insurance
  • 401(k) with employer match
  • Paid time off
  • Career growth opportunities

Why This Role Matters
This role is critical to ensuring product quality, maintaining compliance with industry standards, and supporting efficient and reliable processing operations.

Apply
👉 Apply online: https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=2025028d-7acd-4c20-b3da-c49a0d760dac&ccId=19000101_000001&jobId=546384&lang=en_US

⚠️ Disclaimer
This job is shared for informational purposes. WeMineUp is not affiliated with the hiring company. Please apply through the official company process. 

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