{"id":1378670,"url":"https://alion.io/job/mp-materials-process-engineer","title":"Process Engineer","company":{"id":1808321,"name":"MP Materials","domain":"mpmaterials.com","url":"https://alion.io/company/mpmaterials","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"ADP","truth_index":{"grade":"A","score":92,"open_postings":93,"ghost_share":0.043,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":100,"computed_at":"2026-11-15T07:52:55Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mountain Pass, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":110000,"max":150000,"currency":"USD","period":"year","gross":null,"usd_annual":150000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Microsoft Office","optional":false},{"name":"Physical AI","optional":false}],"status":"live","first_seen_at":"2026-04-01T17:00:00Z","employer_posted_date":"2026-04-01","last_verified_at":"2026-11-15T06:08:41Z","board_verified":true,"closed_at":null,"days_open":228,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":226},"description":"Company Overview:\nWe are the only U.S. company with a fully integrated rare earth supply chain-from mining and refining to advanced metal and magnet manufacturing. Our products include both the critical materials used to make permanent magnets and the finished magnets themselves-enabling next-generation technologies in robotics, automation, aerospace, transportation, defense, and energy systems. These materials are the foundation of physical AI-the convergence of computation, movement, and control.\nWe hire ambitious, mission-driven people who want to tackle complex challenges and shape the future of strategic industries. Our culture is rooted in teamwork, resiliency, and integrity, with a deep commitment to operational excellence and national purpose. MP is rapidly evolving from a materials producer into a leading U.S. manufacturer-and our people are driving that transformation.\nPosition Overview:\nThere are four levels of process engineers in the Process Technology and Engineering Department, I, II, and Senior, all reporting to the area Lead Process Engineer. MP Materials is currently looking for levels I, II, and Senior Process Engineers. They will collaborate with other plant engineering staff, supervisors, operators, and management in the design, implementation, startup, and optimization of various new and existing unit operations, monitor daily process and equipment control parameters, and adjust as necessary to ensure safe production, quality, efficiency, and uninterrupted operation. Process engineers also investigate process upsets, develop conceptual engineering & initial capital project scopes, and make recommendations to improve process safety, quality, efficiency, and profitability.\n Position Responsibilities:\nGuide daily plant operations using engineering best practices.\nCreate and review Standard Operating Procedures (SOP) and process log sheets for new and existing processes; work with area trainers to effectively communicate materials to the operations group.\nCreate and maintain PFDs, P&IDs, mechanical and layout drawings, process control procedures, and design basis documentation.\nProvide technical training to operations personnel.\nPromote process safety and manage risk through appropriate engineering and administrative controls.\nTrack and present key performance indicators (KPIs); update operating setpoints, strategy, and procedures based on KPIs for continual process improvement.\nUse statistical process control programs and techniques to analyze process KPIs.\nIdentify and create preliminary technical scope packages for small capital projects; participate in the capital project lifecycle to ensure successful design and implementation.\nDevelop and communicate cost, benefits, and risk information on new process changes.\nParticipate in the Management of Change process, creating and executing MOC projects.\nParticipate in environmental, health, and safety initiatives, and ISO 9001.\nCollaborate with the project management team, purchasing department, vendors, maintenance, contractors, operators, and other team members as needed to maintain safe, reliable operations.\nComplete any other tasks as needed or as directed by management.\nBasic Qualifications:\nBachelor’s degree in chemical engineering.\nProcess Engineer I: 0-3 years of work experience in a chemical plant, mining, petroleum, or a similar heavy industrial setting.\nProcess Engineer II: 3-6 years of work experience in a chemical plant, mining, petroleum, or a similar heavy industrial setting.\nSenior Process Engineer: 6+ years of work experience in a chemical plant, mining, petroleum, or a similar heavy industrial setting.\nValid Drivers License to drive company vehicles on and off property.\nDesired Qualities:\nPrior experience with mills, flotation circuits, thickeners/clarifiers, slurry systems, dry solids handling, dissolution reactors, precipitation reactors, filter press, belt filter, and other various filtration technology, centrifugal and positive displacement pumps, heat exchangers, cooling towers, instrumentation and process control automation, steam & power generation, reverse osmosis, water treatment, evaporators, crystallizers, centrifuges.\nExcellent communication skills, verbal and written.\nAbility to complete a task with appropriate coaching and minimal supervision.\nAbility to create, read, and modify PFD’s and P&ID’s, material & energy balances.\nHigh proficiency in Microsoft Office (Word, Excel, PowerPoint), statistical software, and PI ProcessBook.\nAbility to travel as needed (< 10%).\nStrong technical writing capability & attention to detail.\nValid Driver’s License to drive company vehicles on and off property.\nMP Materials is Proud to be an Equal Opportunity / Affirmative Action Employer - EEO is The Law\nAll qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. Underrepresented groups/Women/Disabled/Veterans are encouraged to apply. Candidates whose disabilities make them unable to meet the position’s requirements will still be considered qualified if they can perform the essential functions of the job with reasonable accommodation.\nYour Right to Work - In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment verification document form upon hire.\nFor Assistance with Application - Alternative methods of applying for employment are available to individuals unable to submit an application through this site because of a disability. Contact Human Resources Department at 702-844-6111; 1700 South Pavilion Center Dr. 8th Floor, Las Vegas, NV 89135 to discuss reasonable accommodation.\nSafety Provision - Employees are responsible for following all company, industry and regulatory procedures and laws to ensure a safe work environment for themselves and the company. Employees must have a willingness to promote safety among the workforce, participate in Process Hazard Analysis procedures and Pre-Startup Safety Reviews.\n(PPE) Personal Protective Equipment is required when performing work in a mine, manufacturing, outdoor, or plant environment. Required PPE may include, but is not limited to, hard hat, hearing protection, safety glasses, safety footwear, respirator, rubber steel-toe boots, protective clothing, gloves, and any other protective equipment as required.\nWorking Conditions - Our facility sits at an elevation of 4,700 feet. Employees may be subject to extreme weather conditions when working in an outdoor setting (heat and cold, wind). Work is at an open pit mine or manufacturing/chemical plant setting, which may include exposure to moving mechanical parts, toxic chemicals, risk of electrical shock, explosives, fumes, or airborne particles.\nPhysical Demands - Manual dexterity; sense of touch; sense of smell; speaking clearly; hearing-speech range; hearing - all ranges; seeing, reading and comprehensions; seeing - distant/near; depth perception; color vision. While performing the job responsibilities, the employee is required to talk and hear. The employee is often required to stand and use their hands and fingers, to handle or feel and to manipulate laboratory equipment. The employee is occasionally required to walk, reach with arms and hands, climb or balance, and to stoop, kneel, crouch or crawl. Vision abilities required by this job include close vision. Employees must pass a full-face respiratory fit test. Employees must be able to lift 50 lbs. Must be able to work in PPE level C. 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