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Minerals Processing Engineer Jobs in Texas (NOW HIRING)

Mariana Minerals

Staff Process Engineer

Houston, TX · On-site

$140K - $175K/yr

... minerals processing pilot plant in Houston. You will help design, deploy, and operate first-of-its-kind refining processes for critical minerals. This role is highly hands-on and will play a key role ...

Mariana Minerals

Head of Engineering Programs

Houston, TX · On-site

$180K - $240K/yr

Bachelor's degree in Engineering or a related technical field * 10+ years of experience leading program or project management for large, complex capital projects in mining, minerals processing ...

Mariana Minerals

Process Modeling Engineer

Houston, TX · On-site

$100K - $160K/yr

About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company ... Competency with Python or MATLAB for model automation, data processing, and custom calculations is ...

Mariana Minerals

Sr. Electrical Engineer

Houston, TX · On-site

$140K - $210K/yr

... mineral processing - Large-scale chemical production processes - Engineering, procurement, and ... construction firms Our culture is built on three principles: Extreme Ownership - We take full ...

Mariana Minerals

Process Safety Engineer

Houston, TX · On-site

The Role Mariana Minerals is seeking a Process Safety Management (PSM) Engineer to help build, administer, and continuously improve the company's process safety and major hazard risk management ...

Mariana Minerals

Structural Designer

Houston, TX · On-site

Experience in industrial, mining, minerals processing, chemical, or heavy-industrial environments ... Engineer Out Requirements, then Automate - We simplify, optimize, and then automate for scale.

Mariana Minerals

Mechanical Engineer

Houston, TX · On-site

$140K - $175K/yr

You will design, build, and commission mineral processing and metallurgical refining equipment ... Lead mechanical engineering scopes across project phases-from concept and feasibility through ...

Mariana Minerals

Sr. Data Engineer

Houston, TX · On-site

$101K - $137K/yr

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying ... directly with process engineers, ML engineers, and operations teams. Preferred : • Bonus ...

Mariana Minerals

Sr. Estimator

Houston, TX · On-site

... mining and mineral processing projects. This role is responsible for developing accurate ... Collaborate with engineering, procurement, and project management teams to ensure accurate and ...

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All JobsMinerals Processing Engineer JobsMinerals Processing Engineer Jobs in Texas

Minerals Processing Engineer information

See Texas salary details

$55.9K

$81.7K

$109.9K

How much do minerals processing engineer jobs pay per year?

As of Jul 26, 2026, the average yearly pay for minerals processing engineer in Texas is $81,742.00, according to ZipRecruiter salary data. Most workers in this role earn between $62,400.00 and $99,200.00 per year, depending on experience, location, and employer.

What does a mineral processing engineer do?

A mineral processing engineer designs and optimizes processes to extract valuable minerals from ore, ensuring efficient recovery and quality. They analyze ore properties, select appropriate equipment, and develop processing methods, often using tools like flotation, grinding, and separation techniques, while adhering to safety and environmental standards.

Will AI replace mining engineers?

Mining engineers play a critical role in designing, managing, and optimizing mineral extraction processes, which require technical expertise and decision-making skills that AI cannot fully replicate. AI tools can assist with data analysis, automation, and process monitoring, but human oversight, problem-solving, and field experience remain essential in mining operations.

What does a Minerals Processing Engineer do?

A Minerals Processing Engineer is responsible for designing, developing, and optimizing processes to extract valuable minerals from ores efficiently and sustainably. They work with various techniques such as crushing, grinding, flotation, and leaching to separate and refine raw materials. These engineers collaborate with geologists, metallurgists, and plant operators to improve plant performance, reduce waste, and enhance environmental sustainability. Their role is vital in the mining industry, ensuring that resources are processed safely and cost-effectively for further use in manufacturing and industries.

What are the typical daily responsibilities of a Minerals Processing Engineer?

As a Minerals Processing Engineer, your daily tasks may include designing and monitoring processing circuits, optimizing production efficiency, analyzing laboratory and plant data, and troubleshooting equipment performance issues. You’ll collaborate with metallurgists, mechanical engineers, and plant operators to ensure processes are running safely and efficiently. Regular communication with management and technical teams is common, as is the development or refinement of operating procedures and adherence to environmental and safety regulations. This role often involves a mix of fieldwork, laboratory analysis, and office-based reporting, providing a dynamic and hands-on work environment.

What are the key skills and qualifications needed to thrive in the Minerals Processing Engineer position, and why are they important?

A Minerals Processing Engineer should have a solid background in chemical or metallurgical engineering, mineralogy, and process optimization, usually supported by a relevant engineering degree. Familiarity with simulation software, process control systems, and adherence to industry safety certifications like MSHA are commonly required. Strong analytical thinking, problem-solving abilities, and clear communication help facilitate effective teamwork and troubleshooting. These competencies ensure safe, efficient, and cost-effective mineral extraction and processing in dynamic industrial environments.

What does a mineral engineer do?

A minerals processing engineer designs and optimizes processes to extract valuable minerals from ore, ensuring efficient and safe operations. They analyze mineral properties, develop processing techniques, and use tools like simulation software to improve recovery rates and reduce environmental impact.

What engineers make $500,000 a year?

Highly experienced engineers in specialized fields such as petroleum, aerospace, or software engineering can earn $500,000 or more annually, often through a combination of base salary, bonuses, and stock options. These roles typically require advanced skills, extensive experience, and often involve leadership or executive responsibilities.
What are the most commonly searched types of Minerals Processing Engineer jobs in Texas? The most popular types of Minerals Processing Engineer jobs in Texas are:
What are popular job titles related to Minerals Processing Engineer jobs in Texas? For Minerals Processing Engineer jobs in Texas, the most frequently searched job titles are:
What job categories do people searching Minerals Processing Engineer jobs in Texas look for? The top searched job categories for Minerals Processing Engineer jobs in Texas are:
Minerals Processing Engineer jobs near you
Infographic showing various Minerals Processing Engineer job openings in Texas as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $81,742 per year, or $39.3 per hour.

Hydrometallurgical Process Engineer

Mariana Minerals

Houston, TX • On-site

$100K - $175K/yr

Full-time

Posted 23 days ago

Job description

About Mariana Minerals
Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We're reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.
The Role
Mariana Minerals is looking for a highly motivated Hydrometallurgical Process Engineer to work on building the critical minerals supply chain to support the world's energy transition.
As a Hydrometallurgical Process Engineer at Mariana Minerals, you will lead the development and deployment of first-of-its-kind chemical refining processes, while also supporting development of software for capital project execution and automated plant optimization. Responsibilities will include leading equipment scopes from concept through to design, installation, commissioning, ramp, and handover to the operations team.
What You'll Do
  • Lead hydrometallurgical process equipment scopes from concept development and modeling validation through procurement, detailed engineering, fabrication, installation, commissioning, and ramp-up
  • Manage external technology licensors, equipment vendors, and engineering partners to deliver fully integrated and performant hydrometallurgical refining systems
  • Develop detailed heat and material balances for complex hydrometallurgical process trains, including leaching, solution purification, solvent extraction/ion exchange, precipitation, crystallization, and residue handling
  • Build hydraulic models and process flow diagrams/P&IDs for hydrometallurgical circuits, ensuring operability, reliability, and safety
  • Create first-principles models of chemical reactors and unit operations (e.g., leach reactors, autoclaves, SX settlers, IX columns, precipitation reactors, filtration systems) to validate scale-up and derisk commercial designs
  • Identify, evaluate, and implement engineering solutions to optimize extraction, purification, and recovery processes under varying chemistry, feedstock qualities, and operating conditions
  • Collaborate deeply with R&D, lab staff, pilot-plant engineers, and operations teams to translate bench-scale insights into robust and scalable hydrometallurgical flowsheets
  • Work closely with software and machine-learning teams to automate process-engineering workflows and develop advanced control, optimization, and digital-twin models for hydrometallurgical reactors and plants
What You'll Bring
  • Strong understanding of engineering fundamentals and demonstrated ability to leverage the understanding to solve challenging problems
  • Strong foundation in chemical engineering, metallurgical engineering, or process engineering, with demonstrated ability to apply engineering fundamentals to complex hydrometallurgical systems
  • Experience with equipment engineering and design. Including but not limited to:
  • Brownfield modifications and upgrades of process equipment (e.g., leach tanks, reactors, filtration systems, solvent extraction circuits)
  • Greenfield design of hydrometallurgical unit operations and integrated circuits
  • Troubleshooting, evaluation, and optimization of operating hydrometallurgical or chemical-process equipment
  • Experience with the following industries and/or production environments:
  • Hydrometallurgical mineral processing or metal refining
  • Large-scale mining, critical-minerals processing, or battery-materials production
  • Industrial chemical manufacturing with complex aqueous/chemical reaction systems
  • Engineering, procurement, and construction (EPC/EPCM) firms supporting mining and mineral processing industry projects
Our culture is built on three principles:
Extreme Ownership - We take full responsibility for outcomes, relentlessly driving toward solutions.
Engineer Out Requirements, then Automate - We simplify, optimize, and then automate for scale.
Share Your Legos - We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.
Join us as we build the future of responsible mineral sourcing and supply.

Apply