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Trainee Minerals Processing Engineer Jobs in Boston, MA

Titan America

Electrical Controls Engineer

Needham, MA

$87K - $116K/yr

Overview ST Equipment & Technology (STET) is the developer of a proprietary separation technology used to process dry powders such as fly ash, mineral ores, food/ feed powders, by triboelectrically ...

Titan America

Electrical Controls Engineer

Needham, MA

$87K - $116K/yr

Overview ST Equipment & Technology (STET) is the developer of a proprietary separation technology used to process dry powders such as fly ash, mineral ores, food/ feed powders, by triboelectrically ...

Titan America

Electrical Controls Engineer

Needham, MA · On-site

$87K - $116K/yr

Overview ST Equipment & Technology (STET) is the developer of a proprietary separation technology used to process dry powders such as fly ash, mineral ores, food/ feed powders, by triboelectrically ...

Titan America

Electrical Controls Engineer

Needham, MA · On-site

$90 - $120/hr

Overview ST Equipment & Technology (STET) is the developer of a proprietary separation technology used to process dry powders such as fly ash, mineral ores, food/ feed powders, by triboelectrically ...

Titan America

Electrical Controls Engineer

Needham, MA

$87K - $116K/yr

ST Equipment & Technology (STET) is the developer of a proprietary separation technology used to process dry powders such as fly ash, mineral ores, food/ feed powders, by triboelectrically charging ...

Titan America

Electrical Controls Engineer

Needham, MA · On-site

$87K - $116K/yr

Overview ST Equipment & Technology (STET) is the developer of a proprietary separation technology used to process dry powders such as fly ash, mineral ores, food/ feed powders, by triboelectrically ...

SanAir

Polarized Light Analysts in STEM

Woburn, MA · On-site

Sample processing, documentation, and preparation. * Analysis of bulk and thin-section slides for ... Quantification of minerals present, and identification of additional natural/artificial sample ...

Ametek

Senior Quality Engineer

Peabody, MA

$98K - $133K/yr

Your responsibilities will include developing and maintaining robust quality assurance processes ... Support product material compliance initiatives such as REACH, ROHS, WEEE, Conflict Minerals, etc.

Gradiant

Lead Mechanical Engineer

Woburn, MA · On-site

$120K - $146K/yr

... minerals, and renewable energy. Gradiant's innovative solutions reduce water used and wastewater ... Receive the basic process design from the proposals / sales team. * Support P&IDs preparation based ...

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All JobsMinerals Processing Engineer JobsTrainee Minerals Processing Engineer JobsTrainee Minerals Processing Engineer Jobs in Boston, MA

Trainee Minerals Processing Engineer information

See Boston, MA salary details

$33.1K

$74.5K

$125.5K

How much do trainee minerals processing engineer jobs pay per year?

As of Aug 24, 2026, the average yearly pay for trainee minerals processing engineer in Boston, MA is $74,545.00, according to ZipRecruiter salary data. Most workers in this role earn between $56,500.00 and $80,900.00 per year, depending on experience, location, and employer.

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 popular job titles related to Trainee Minerals Processing Engineer jobs in Boston, MA?

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

What job categories do people searching Trainee Minerals Processing Engineer jobs in Boston, MA look for?

The top searched job categories for Trainee Minerals Processing Engineer jobs in Boston, MA are:

Trainee Minerals Processing Engineer jobs near you

2.1 Senior Process Engineer - Hydrometallurgist

Phoenix Tailings

Burlington, MA

$120K - $190K/yr

Full-time

Medical, Dental, Vision, PTO

Re-posted 3 days ago

Job description

About Phoenix Tailings 

Phoenix Tailings is a rapidly growing clean mining and metals production startup dedicated to sustainable and economic critical metals production. Our mission is to be the world's first fully clean mining and metals production company-producing the resources required to power the technology of today and tomorrow. 

Why Phoenix Tailings 

At Phoenix, we're building more than technology-we're building the future supply chain for critical and rare earth metals. This work matters. It demands urgency, rigor, and creativity. You'll join a team that values ownership, technical excellence, and the courage to challenge legacy approaches to mining and metals production. 

Our Values:  

You are only crazy if you are wrong, it's ok to be wrong
Lead with Compassion
Be Resourceful
Listen
Hustle

Who We Are Looking For: 

Phoenix Tailings is looking for a Senior Process Engineer- Hydrometallurgist to lead hands-on process development, optimization, and scale-up of hydrometallurgical systems for critical and rare earth metals production. This role is ideal for someone with deep technical experience in wet chemistry, aqueous processing, leaching, precipitation, separation, purification, and pilot-scale development who wants to build real-world industrial processes, not just model them. 

This position will play a key role in translating laboratory results into scalable process designs that support Phoenix Tailings' transition from R&D to commercial deployment. You will work closely with R&D, engineering, and pilot operations teams to design experiments, troubleshoot complex process challenges, develop operating parameters, and guide junior engineers and scientists. 

 
Key Responsibilities:
  • Lead the design, execution, and analysis of hydrometallurgical experiments involving leaching, purification, precipitation, precipitation, solid-liquid separation, solvent extraction, and related critical metals processes 
  • Develop and optimize process conditions for laboratory, bench-scale, and pilot-scale hydrometallurgical systems 
  • Translate experimental results into process flow diagrams, mass balances, operating windows, equipment specifications, and scale-up recommendations  
  • Provide technical leadership for wet chemistry work, including solution chemistry, acid-base chemistry, pH control, filtration, precipitation, reagent selection, and process troubleshooting 
  • Support equipment sizing and selection for reactors, filtration systems, thickeners, mixer-settlers, tanks, pumps, and other hydrometallurgical process equipment 
  • Lead root-cause analysis and troubleshooting for process performance issues, including recovery losses, impurity behavior, phase separation challenges, and process instability  
  • Collaborate with engineering, R&D, and operations teams to develop pilot-scale test plans, operating procedures, and process control strategies  
  • Mentor junior engineers, scientists, and technicians in experimental design, lab execution, safety practices, data interpretation, and technical documentation  
  • Maintain clear technical records and prepare reports, presentations, and recommendations for internal design reviews and leadership discussions  
  • Support the scale-up of Phoenix Tailings' critical metals production processes from R&D through commercial deployment  
Qualifications:
  • Bachelor's, Master's, or PhD in Chemical Engineering, Metallurgical Engineering, Materials Science, Chemistry, or a related technical discipline  
  • 5+ years of experience in hydrometallurgy, wet chemistry, chemical process development, mineral processing, metals refining, or related chemically intensive systems  
  • Strong hands-on experience with hydrometallurgical unit operations, including leaching, precipitation, filtration, solid-liquid separation, solvent extraction, purification, and crystallization  
  • Demonstrated experience translating laboratory or bench-scale data into pilot-scale or commercial process development decisions  
  • Strong understanding of aqueous chemistry, solution speciation, acid-base chemistry, impurity control, reagent behavior, and process optimization  
  • Experience developing mass balances, process flow diagrams, experimental plans, technical reports, and operating procedures  
  • Experience mentoring junior technical team members or leading technical workstreams in a laboratory, pilot, or industrial environment  
 
We offer a competitive compensation package that is based on expertise. We also offer the following benefits:

This pay range reflects best estimate for the total cash compensation which includes salary + discretionary bonus for this role. Total package  may vary based on experience and qualifications.

Pay Range: $120,000- $190,000 total cash compensation plus equity

  • Healthcare: 100% Medical, dental, and vision coverage for employee.
  • Stock Options: Ownership in a fast-growing venture-backed company. 
  • Time Off: Unlimited PTO. 
  • Learning: Learning and development opportunities to grow your skills and career. 
At Phoenix Tailings, we have an open culture that values learning, and we are looking to grow the team with enthusiastic individuals who share our vision of sustainable mining.  
 
Phoenix Tailings, Inc. is an Equal Opportunity Employer, and we value diversity at all levels. All qualified candidates will receive consideration for employment without regard to race, color, religion, sex (including gender identity, sexual orientation, and pregnancy), national origin, age, disability or genetic information, or any other applicable protected characteristics, and these characteristics will not be a factor for consideration of any work-related decisions (including but not limited to hiring, firing, compensation, and discipline). 
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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