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Trainee Minerals Processing Engineer Jobs in California

Mariana Minerals

Global Sourcing Manager

San Francisco, CA · On-site

$150K - $170K/yr

About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company ... process requirements, and engage credibly with engineering teams * Excellent negotiation skills ...

Santa Cruz Nutritionals

Process Engineer

Santa Cruz, CA · On-site

$103K - $154K/yr

SCN BestCo is a leading innovator, developer and manufacturer of Vitamin, Mineral & Supplement (VMS ... The Process Engineer works closely with multiple departments including production, warehouse ...

Western Mesquite Mines

Process Manager

Brawley, CA · On-site

Bachelor's degree in Mineral Processing, Metallurgy, Chemical Engineering, or a related engineering discipline strongly preferred. * Equivalent combinations of education and demonstrated relevant ...

Minerals Technologies

Mill Manager

Lucerne Valley, CA · On-site

$130K - $150K/yr

Minerals Technologies Inc. is a global, technology-driven specialty minerals company that develops ... Evaluate processes and systems to identify opportunities for operational improvements and cost ...

Minerals Technologies

Mill Manager

Lucerne Valley, CA · On-site

$130K - $150K/yr

Overview Minerals Technologies Inc. is a global, technology-driven specialty minerals company that ... Evaluate processes and systems to identify opportunities for operational improvements and cost ...

Minerals Technologies

Mill Manager

Lucerne Valley, CA · On-site

$130K - $150K/yr

Overview Minerals Technologies Inc. is a global, technology-driven specialty minerals company that ... Evaluate processes and systems to identify opportunities for operational improvements and cost ...

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Trainee Minerals Processing Engineer information

What is a trainee minerals processing engineer?

A Trainee Minerals Processing Engineer is an entry-level professional who assists in the extraction and processing of minerals from ores. They work under the supervision of experienced engineers to learn about crushing, grinding, separation, and concentration techniques used in mineral processing plants. Their responsibilities typically include monitoring equipment, collecting samples, analyzing data, and ensuring that safety and environmental standards are met. This role serves as a foundation for gaining practical experience and advancing to more senior engineering positions within the mining and minerals industry.

What does a trainee minerals processing engineer do?

As a Trainee Minerals Processing Engineer, your daily activities often include monitoring ore processing operations, collecting and analyzing samples, and assisting with troubleshooting plant equipment. You'll also collaborate closely with senior engineers and plant operators to implement process improvements and ensure safety protocols are followed. These tasks are essential for optimizing production efficiency and quality, while also supporting the team's broader objectives of maximizing resource recovery and minimizing environmental impact. Over time, you'll gain exposure to project management and technical reporting, which can open pathways to more advanced engineering roles.

What skills and qualifications are needed to be a trainee minerals processing engineer?

To thrive as a Trainee Minerals Processing Engineer, you need a solid understanding of mineral processing principles, typically supported by a degree in chemical, metallurgical, or mining engineering. Familiarity with process simulation software, laboratory testing equipment, and safety management systems is commonly required. Strong analytical skills, attention to detail, and effective teamwork are standout soft skills in this role. These competencies are essential for optimizing mineral recovery, ensuring safety, and contributing to efficient plant operations.

What is the difference between Trainee Minerals Processing Engineer vs Junior Minerals Processing Engineer?

AspectTrainee Minerals Processing EngineerJunior Minerals Processing Engineer
QualificationsTypically pursuing or recently completed relevant degree (e.g., Mining, Mineral Processing)Usually holds a degree in a related field, with some practical experience
Work EnvironmentTraining programs, supervised tasks, entry-level site workMore independent responsibilities, project involvement
Employer UsageInternship or apprenticeship programs within mining companiesEntry-level full-time roles in mineral processing plants or consulting firms

The main difference is that a Trainee Minerals Processing Engineer is in a learning or internship phase, focusing on gaining foundational skills, while a Junior Minerals Processing Engineer has completed their education and is taking on more responsibilities in processing operations.

What are the most commonly searched types of Minerals Processing Engineer jobs in California?

The most popular types of Minerals Processing Engineer jobs in California are:

What are popular job titles related to Trainee Minerals Processing Engineer jobs in California?

For Trainee Minerals Processing Engineer jobs in California, the most frequently searched job titles are:

What job categories do people searching Trainee Minerals Processing Engineer jobs in California look for?

The top searched job categories for Trainee Minerals Processing Engineer jobs in California are:

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Cities in California with the most Trainee Minerals Processing Engineer job openings:

Trainee Minerals Processing Engineer jobs near you

Process Engineer

Coreshell Technologies

San Leandro, CA • On-site

Full-time

Medical, Dental, Vision, Retirement

Re-posted 20 days ago

Job description


 

Coreshell's metallurgical Silicon anode technology delivers high capacity, fast-charging, and superior safety. Our low-cost Silicon-dominant batteries have higher energy density, superior intrinsic thermal safety, and significantly lower cost/kWh compared to current LIBs. Coreshell's Si anode material is lower than the cost of graphite and utilizes the largest abundant critical mineral supply in the US and Europe. We strive to transform the global energy and transportation market by enabling cost effective and secure domestic battery supply. 

 

Core Responsibilities: We are seeking a Junior Process Engineer to join our battery process technology team. This role supports the development, optimization, and stabilization of electrode, cell assembly, and formation processes. The ideal candidate is highly motivated, detail‑oriented, and eager to grow into a process expert in next‑generation battery technologies . 

 

Responsibilities include:

  • Process monitoring: Monitor daily production KPIs (yield, scrap, downtime) and identify abnormalities.
  • Data analysis:  Analyze process and quality data to support root cause investigations.
  • DOE execution: Assist in planning and running Design of Experiments to optimize process parameters.
  • Equipment support: Work with equipment engineers to troubleshoot process issues.
  • SOP documentation: Create and update standard operating procedures and work instructions.
  • Quality collaboration: Support quality teams in defect analysis and corrective actions.
  • Sample preparation: Prepare samples for lab testing (adhesion, resistance, thickness, etc.).
  • Cross functional communication: Collaborate with R&D, Quality, and Production teams to implement improvements.
 

Preferred Technical Areas:

  • Electrode process: mixing, coating, calendering, slitting
  • Cell assembly: stacking/Z‑folding, welding, electrolyte filling, formation
  • Quality systems: SPC, MSA, FMEA
  • Data tools: Python, JMP, Minitab, Tableau (plus)
 

Qualifications:

  • Bachelor’s degree in Chemistry, Chemical Engineering, Materials Science, Mechanical Engineering, Industrial Engineering, or related field
  • 0–2 years of experience in battery cell manufacturing (process development, process technology or manufacturing environment preferred)
  • Strong analytical and problem‑solving skills
  • Ability to work in fast‑paced production environments
  • Basic understanding of statistical analysis
  • Good communication and teamwork skills
 

Preferred Qualifications:

  • Internship or project experience in battery manufacturing
  • Experience with DOE, SPC, or Six Sigma tools
  • Familiarity with lithium‑ion cell structure and production flow
  • Hands‑on experience with lab measurement tools (viscometer, caliper, UTM, etc.)
 

Location & Benefits: San Leandro, CA. Full-time. $72,000-85,000. Salary and equity options dependent on experience. Dental, vision, healthcare and 401(k) benefits are included. Applications will be screened as received. 

 

Coreshell Technologies is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, ancestry, age, disability, genetic information, military or veteran status, marital status, or any other protected status under California law.  

 

Applicants requiring reasonable accommodation during the application or interview process should notify the recruiting team.

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