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Refinery Process Engineer Jobs in Texas (NOW HIRING)

Mariana Minerals

Staff Process Engineer

Houston, TX · On-site

$140K - $175K/yr

You will help design, deploy, and operate first-of-its-kind refining processes for critical ... You will work closely with technicians, engineers, and cross-functional teams to ensure processes ...

HumCap, Inc.

Process Engineer

Dallas, TX

Job Overview The SMT Process Engineer will be instrumental in refining and overseeing the Surface Mount Technology (SMT) manufacturing processes to enhance operational efficiency and product quality ...

Delek US

Principal Process Engineer (Remote)

Tyler, TX · On-site +1

Our refineries in Texas, Arkansas, and Louisiana have a combined crude capacity of 302,000 barrels ... Trains, mentors and coaches less experienced process engineers (i.e., troubleshooting and ...

Hp

Source to Pay Value Chain Process Engineer

Spring, TX · On-site

$130K - $205K/yr

Source to Pay Value Chain Process Engineer Description - Position Summary The Value Chain Process Engineer - Source to Pay is responsible for shaping breakthrough transformation agendas by combining ...

Enterprise Products

Engineer, Staff Process

Houston, TX · On-site

... refined products and petrochemicals. Our services include: natural gas gathering, treating ... The Staff Process Engineer is a technical resource supporting Enterprise's gas processing, liquids ...

Walmart

Process Engineer - Supply Chain

Palestine, TX · On-site

Bachelor's Degree in Engineering or prior experience in Process Improvement OR 2 years' of process improvement, or relevant work experience. Microsoft Office Suite, analytical skills. Preferred ...

Praxair

Process Engineer

The Woodlands, TX · On-site

Must have at least 5 years of experience in a process or plant engineering function in operations or engineering in the industrial gas, chemicals, refining/petrochemical and/or steam generation ...

Walmart

Process Engineer - Supply Chain

Palestine, TX

$80K - $120K/yr

Bachelor's Degree in Engineering or prior experience in Process Improvement OR 2 years' of process improvement, or relevant work experience. Microsoft Office Suite, analytical skills. Preferred ...

Walmart

Process Engineer - Supply Chain

Palestine, TX · On-site

Bachelor's Degree in Engineering or prior experience in Process Improvement OR 2 years' of process improvement, or relevant work experience. Microsoft Office Suite, analytical skills. Preferred ...

Zachry Group

Engineer IV Process

Houston, TX

Experience as a Process Engineer in the gas processing and/or refining industries * Experience in the Power Industry and Water Treatment Technologies * Experience in gas purification technologies ...

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Refinery Process Engineer information

See Texas salary details

$66.6K

$128K

$217.1K

How much do refinery process engineer jobs pay per year?

As of Jun 10, 2026, the average yearly pay for refinery process engineer in Texas is $127,995.00, according to ZipRecruiter salary data. Most workers in this role earn between $94,600.00 and $137,400.00 per year, depending on experience, location, and employer.

What does a Refinery Process Engineer do?

A Refinery Process Engineer is responsible for designing, optimizing, and troubleshooting processes within an oil refinery to ensure efficiency, safety, and regulatory compliance. They analyze data, monitor equipment performance, and recommend improvements to enhance productivity and reduce costs. Additionally, they work closely with operations, maintenance, and safety teams to implement process modifications and resolve technical issues. Their role is crucial in maximizing yield, minimizing energy consumption, and ensuring environmental compliance.

What engineers make $300,000 a year?

Senior engineers in specialized fields such as petroleum, aerospace, or software engineering can earn $300,000 or more annually, especially with extensive experience, advanced skills, and leadership roles. High-level positions often require advanced degrees, certifications, and a strong track record of project management or technical expertise.

What are some of the typical day-to-day responsibilities for a Refinery Process Engineer?

As a Refinery Process Engineer, your main responsibilities typically include monitoring and optimizing production processes, troubleshooting technical issues, and ensuring compliance with safety and environmental regulations. You may also be involved in analyzing process data, implementing improvements, and coordinating with operations, maintenance, and other engineering teams to maintain efficient plant performance. Your day could involve both desk work—such as process modeling and reporting—and fieldwork in the refinery, observing equipment and working closely with plant personnel. This blend of tasks helps ensure the refinery operates safely, efficiently, and at peak capacity.

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

To excel as a Refinery Process Engineer, a strong background in chemical engineering, process optimization, and safety protocols is essential, typically supported by a relevant engineering degree. Proficiency with process simulation software (such as Aspen HYSYS or CHEMCAD), knowledge of distributed control systems (DCS), and familiarity with industry certifications like Six Sigma or Professional Engineer (PE) licensure are highly valued. Problem-solving abilities, strong communication, and teamwork skills help professionals navigate dynamic refinery environments and coordinate with cross-functional teams. These competencies are crucial for ensuring efficient, safe, and compliant operations within complex refinery processes.

What engineer makes $500,000 a year?

Refinery process engineers typically do not earn $500,000 annually; such high salaries are more common in executive roles or specialized senior positions within the oil and gas industry. Top-level engineers with extensive experience, advanced certifications, or leadership responsibilities may approach high six-figure incomes, but salaries of $500,000 are rare for standard process engineering roles.

What does a process engineer do in a refinery?

A refinery process engineer designs, develops, and optimizes chemical processes used to convert crude oil into refined products like gasoline, diesel, and jet fuel. They analyze process data, troubleshoot operational issues, and ensure safety and efficiency using tools such as process simulation software. The role often requires knowledge of chemical engineering principles, safety standards, and certifications like API or OSHA compliance.

What does a refinery engineer do?

A refinery process engineer designs, monitors, and optimizes the processes used to convert crude oil into refined products like gasoline, diesel, and jet fuel. They analyze process data, troubleshoot operational issues, and ensure safety and efficiency using tools such as process simulation software. Strong knowledge of chemical engineering principles and safety standards is essential in this role.
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Refinery Process Engineer jobs near you
Infographic showing various Refinery Process Engineer job openings in Texas as of June 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 96% Full Time, 1% Part Time, and 1% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $127,995 per year, or $61.5 per hour.

Staff Process Engineer

Mariana Minerals

Houston, TX • On-site

$140K - $175K/yr

Full-time

Posted 18 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 seeking a highly motivated Process Engineer to support our next-generation 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 in bridging R&D and plant operations, helping scale technologies from laboratory development through pilot demonstration and ultimately to commercial production. You will work closely with technicians, engineers, and cross-functional teams to ensure processes are robust, safe, and ready for industrial deployment.
What You'll Do
  • Lead equipment and process design from concept through procurement, fabrication, installation, commissioning, and startup
  • Operate, troubleshoot, and improve pilot-scale processing equipment in collaboration with pilot plant technicians
  • Design and execute pilot-scale experiments to evaluate process performance, recovery, throughput, and product quality
  • Develop and maintain key process documentation including PFDs, P&IDs, mass and heat balances, operating procedures, and control narratives
  • Analyze experimental and operational data to identify opportunities for process optimization and scale-up
  • Support development of automated plant monitoring and optimization tools in collaboration with software and machine learning teams
  • Ensure safe operations by supporting EHS, hazard assessments, risk management, and management of change processes
What You'll Bring
  • B.S., M.S., or PhD in Chemical Engineering or a related field
  • 10+ years of experience in operations, process scale-up, or plant design in minerals processing, chemicals, specialty materials, oil & gas, or related industries
  • Demonstrated experience driving equipment design, commissioning, and plant operation
  • Strong understanding of relevant unit operations and equipment such as kilns, furnaces, ion exchange, solvent extraction, solid liquid separation, leaching, electrowinning, or similar technologies
  • Ability to design experiments, troubleshoot complex processes, and analyze operational datasets
  • Strong commitment to Health, Safety, and Environmental compliance
  • Excellent technical writing, communication, and teamwork skills
  • Comfortable working in fast-paced environments, wearing multiple hats, and managing ambiguity
Why Join Us?
At Mariana Minerals, you'll be part of a mission-driven team reshaping the way critical minerals are sourced and supplied globally. You'll have the autonomy to make big decisions, the tools to innovate, and a culture that values ownership, smart automation, and collaboration.
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.
Mariana is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status.

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