Staff Process Engineer

Mariana MineralsHouston, TX

On-site Full-time

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Experience Level

Experience

Qualifications

The ideal candidate will possess a strong background in chemical or materials engineering, with a minimum of 5 years of experience in process engineering within the mining or mineral processing sector. You should have a proven track record of implementing process improvements, strong analytical skills, and proficiency in process simulation software. A Master's degree is preferred but not required.

About the job

Join the innovative team at Mariana Minerals as a Staff Process Engineer. In this pivotal role, you will leverage your expertise in process engineering to enhance our operational efficiencies and drive continuous improvement initiatives. Your contributions will be integral in optimizing manufacturing processes and ensuring the highest standards of quality in our mineral extraction and processing operations.

About Mariana Minerals

Mariana Minerals is a leader in the minerals industry, committed to sustainable and innovative practices. We focus on delivering high-quality mineral resources while minimizing environmental impact. Our team is dedicated to continuous improvement and developing cutting-edge technologies to meet the demands of a growing market.

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Mining Engineering Internship at Mariana Minerals | Houston, TX

Mariana Minerals

Internship|On-site|Houston, TX

About Mariana Minerals Mariana Minerals combines deep industry expertise with software and automation to reshape how essential minerals reach sectors like energy, artificial intelligence, and defense. The company focuses on data-driven strategies to improve the minerals supply chain. Mining Engineering Internship Overview This Houston-based internship places…

Apr 14, 2026

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Chemical Engineering Intern at Mariana Minerals | Houston, TX

Mariana Minerals

Intern|On-site|Houston, TX

About Mariana Minerals Mariana Minerals is building the future of minerals with a software-driven approach. The team delivers essential minerals that support energy, artificial intelligence, and defense technologies. By combining industry experience with software, automation, and data-focused methods, Mariana Minerals is changing how the minerals supply chain operates. Internship Overview The Chemical Engineering Intern will join the Process & Plant Engineering team in Houston, TX. This internship centers on meaningful, hands-on work supporting the LithiumOne project. Interns collaborate with seasoned engineers and industry experts, contributing directly to project outcomes rather than only performing support tasks. Key Responsibilities Assist in developing and refining process flow diagrams (PFDs) and piping & instrumentation diagrams (P&IDs) for lithium brine extraction and purification. Help conduct mass and energy balance modeling for core unit operations such as evaporation, impurity removal, and lithium product conversion. Perform literature reviews and interact with vendors to evaluate reagent choices, membrane technologies, and downstream processing options. Support the preparation of engineering documents for feasibility and prefeasibility studies, including equipment sizing and capital cost estimates. Assist in analyzing lab or pilot-scale test data to validate process assumptions and improve flowsheet design. Desired Qualifications Current enrollment in a B.S. or M.S. Chemical Engineering program, with coursework in thermodynamics, mass transfer, and reaction engineering. Familiarity with process simulation tools (such as METSIM, Aspen, or similar) is a plus. Strong analytical skills and technical writing ability, with experience synthesizing data into clear engineering summaries. Interest in hydrometallurgy, critical minerals, or battery materials supply chains is preferred.

Apr 14, 2026

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Mechanical Engineering Intern at Mariana Minerals | Houston, TX

Mariana Minerals

Internship|On-site|Houston, TX

About Mariana Minerals Mariana Minerals is a minerals company focused on software-driven innovation. The team supplies critical minerals used in energy, artificial intelligence, and defense applications. By combining industry experience with automation and data-driven strategies, Mariana Minerals is reshaping the minerals supply chain. Internship Overview The Mechanical Engineering Intern joins the Process & Plant Engineering group in Houston, TX. This role centers on hands-on work supporting the Deep Sea Nodule Refining Pilot Plant. Interns work alongside engineers and technical experts, contributing directly to engineering solutions rather than only assisting with routine tasks. Key Responsibilities Assist with mechanical design and equipment specification for a multi-metal pyrometallurgical and hydrometallurgical pilot plant. Equipment includes vessels, pumps, heat exchangers, and material handling systems. Help prepare equipment datasheets, procurement packages, and review vendor drawings. Take part in on-site installation activities, such as layout coordination, alignment checks, and collaborating with fabrication and construction contractors. Join commissioning efforts, including pre-commissioning inspections, punch list management, and testing of mechanical systems. Keep documentation organized for as-built conditions, equipment records, and commissioning logs.

Apr 14, 2026

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Project Engineering Manager - Houston

Mariana Minerals

Full-time|On-site|Houston, TX

Mariana Minerals, a software-driven minerals company in Houston, TX, supplies essential materials for sectors such as energy, artificial intelligence, and defense. The team blends industrial know-how with software, automation, and data analysis to improve how minerals are sourced, refined, and delivered. The company emphasizes responsible sourcing and modern supply chain practices. Role overview The Project Engineering Manager leads projects that strengthen the minerals supply chain for the energy transition. This role manages design processes, fosters communication between internal teams and external engineering partners, and keeps projects moving efficiently from concept through delivery. Regular collaboration across teams and clear progress updates are central to this position. What you will do Direct engineering activities across internal teams, external partners, and vendors. Develop project-level designs and maintain accurate, comprehensive documentation. Oversee review and approval workflows for engineering documents, vendor submissions, and project deliverables. Facilitate cross-discipline reviews with process, mechanical, structural, piping, electrical, instrumentation, and construction teams. Track engineering deliverables and action items, using logs and trackers to keep projects on schedule. Lead technical interface management, resolving issues between disciplines, vendors, and EPC partners. Organize model reviews, design reviews, and coordination meetings. Capture action items and follow up to completion. Contribute feedback to improve digital project-execution tools and help automate workflows for better project visibility. Location This position is based in Houston, TX.

Apr 24, 2026

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Staff Process Engineer

Mariana Minerals

Full-time|On-site|Houston, TX

Join the innovative team at Mariana Minerals as a Staff Process Engineer. In this pivotal role, you will leverage your expertise in process engineering to enhance our operational efficiencies and drive continuous improvement initiatives. Your contributions will be integral in optimizing manufacturing processes and ensuring the highest standards of quality in our mineral extraction and processing operations.

Mar 24, 2026

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Field Engineering Intern

Mariana Minerals

Internship|On-site|Houston, TX

About Mariana Minerals Mariana Minerals combines deep industry expertise with software, automation, and data analytics to support the minerals supply chain. The company supplies essential minerals for energy, artificial intelligence, and defense technologies, using technology to improve how minerals reach the industries that depend on them. Internship Overview The Field Engineering Intern will join the Project Execution Team in Houston, TX. This role centers on hands-on work, contributing directly to the construction of the Lithium One refinery. Interns collaborate with engineers and subject-matter experts, gaining practical experience in building and delivering solutions, not just observing or assisting. Key Responsibilities Support construction activities for the Lithium One Refinery, working with subcontractors and vendors, and helping manage schedules and budgets to keep the project on track. Contribute to the development, testing, and improvement of solutions within MarianaOS, helping to build a software-focused construction team. Analyze data and field systems to identify inefficiencies, track progress, and suggest ways to improve construction outcomes. Coordinate with cross-functional groups, including engineering, operations, and construction contractors, to align project scopes and solve field issues. Share findings and recommendations with the Project Execution Team at the end of the internship.

Apr 14, 2026

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Staff Mechanical Engineer

Mariana Minerals

Full-time|On-site|Houston, TX

Join our team at Mariana Minerals as a Staff Mechanical Engineer. In this role, you will leverage your expertise in mechanical engineering to drive innovative solutions in mineral processing and contribute to our mission of sustainable resource extraction. You will collaborate closely with cross-functional teams to design, develop, and implement cutting-edge engineering solutions that enhance operational efficiency and effectiveness.

Mar 24, 2026

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Senior Accountant

Mariana Minerals

Full-time|On-site|Houston, TX

Join our dynamic team at Mariana Minerals as a Senior Accountant. In this pivotal role, you will be responsible for managing financial records, preparing reports, and ensuring compliance with accounting regulations. Your expertise will help drive our financial strategy and support our growth.Your contributions will be essential in maintaining the accuracy of our financial data and collaborating with various departments to create a streamlined financial process.

Mar 24, 2026

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Engineering Manager - Piping & Stress Analysis

Mariana Minerals

Full-time|On-site|Houston, TX

Role Overview Mariana Minerals is hiring an Engineering Manager with a focus on Piping & Stress Analysis for the Houston, TX office. This position leads a team responsible for key piping and stress analysis projects, with a strong emphasis on safety and engineering quality. What You Will Do Oversee project timelines and deliverables for piping and stress analysis work Coordinate efforts with other departments to support project goals Mentor and guide junior engineers, supporting their technical growth Maintain high standards for safety and engineering practices throughout all projects Identify ways to improve efficiency and encourage innovation within engineering processes Location This role is based in Houston, TX.

Apr 17, 2026

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Field Engineer at Michels Pipeline, Inc. | Houston, TX

Michels Pipeline, Inc.

Full-time|On-site|Houston, TX

Michels Pipeline, Inc. seeks a Field Engineer based in Houston, TX to support pipeline projects directly onsite. This role centers on coordinating work in the field and ensuring projects meet company standards. Key Responsibilities Supervise daily operations for pipeline construction and maintenance projects Work closely with field crews to keep project timelines on track Track safety and quality at every stage of project execution Offer technical support and guidance to teams working onsite About Michels Pipeline, Inc. Michels Pipeline, Inc. provides pipeline services throughout the industry, emphasizing safety, quality workmanship, and responsive client support.

Apr 20, 2026

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Hospitalist Physician at Medical Clinic of Houston | Houston, TX

Medical Clinic of Houston, L.L.P.

Full-time|On-site|Houston Texas United States

Join Our Team as a Hospitalist PhysicianFounded in 1968, the Medical Clinic of Houston (MCH) stands as a beacon of independent, multi-specialty healthcare excellence. Our mission is to deliver outstanding medical care within a compassionate and service-oriented environment, leveraging the latest advancements in medical technology.At MCH, we specialize in adult Internal Medicine (ages 17 and older) and offer a range of sub-specialties including Cardiology, Endocrinology, Gastroenterology, Rheumatology, and Medical Oncology/Hematology. Our patients benefit from same-day access to comprehensive in-house ancillary and diagnostic support services, including non-invasive cardiology studies, sleep disorder testing, chemotherapy and infusion services, laboratory services, and advanced diagnostic imaging.We are seeking a dedicated Hospitalist Physician to provide exceptional care to patients at a premier hospital located in the esteemed Texas Medical Center. This is a rare opportunity to join our growing, independent physician practice focused on adult patient care.

Feb 28, 2026

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Real Estate Agent (Realtor) - Houston, TX

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Mar 29, 2026

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Skilled Medical Assistant at Medical Clinic of Houston | Houston, TX

Medical Clinic of Houston, L.L.P.

Full-time|On-site|Houston Texas United States

Summary:The Medical Assistant (MA) plays a crucial role in enhancing clinical care by supporting various healthcare activities. The MA is responsible for escorting patients to examinations, conducting initial interviews, obtaining vital physical measurements and health histories, and facilitating the scheduling of appointments and tests. Additionally, the MA collects specimens, administers selected medications, provides patients with pertinent information regarding appointments and treatments, and offers assistance to physicians and other staff members as needed.Duties and Responsibilities:Key Responsibilities:1. Exhibit exceptional communication skills while interacting with patients and colleagues.2. Demonstrate responsiveness to the needs and concerns of patients.3. Engage with patients in a compassionate and considerate manner.4. Uphold courtesy and respect in all interactions.5. Comply with clinic policies and standard operating procedures.6. Ensure accurate and timely documentation of information and measurements.7. Relay necessary information to physicians or supervisors promptly.8. Identify and communicate areas for potential quality improvement.9. Maintain a stocked, sanitized, and organized work environment.10. Protect the confidentiality of patient medical and financial information in accordance with clinic policy and applicable laws.11. Foster an atmosphere of professionalism, privacy, and confidentiality.

Feb 28, 2026

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Lead Resource Geologist

Mariana Minerals

Full-time|On-site|Houston, TX

Join Mariana Minerals as a Lead Resource Geologist where you will play a pivotal role in guiding our geological projects. In this leadership position, you will oversee resource estimation, geological modeling, and project management, ensuring the highest standards of quality and accuracy. Your expertise will be crucial in advancing our exploration initiatives and facilitating strategic decision-making.

Mar 4, 2026

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Senior Plant Manager

Mariana Minerals

Full-time|On-site|Houston, TX

Join Mariana Minerals as a Senior Plant Manager and play a vital role in overseeing our manufacturing operations. You will be responsible for ensuring production efficiency, quality control, and safety standards while leading a dedicated team of professionals. Your leadership will help drive our commitment to excellence and innovation in the minerals sector.

Mar 11, 2026

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Field Surveyor at tsmg | Houston, TX

Service Measure, Inc.

Contract|On-site|Houston, TX

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Facilities Technician at SpawGlass | Houston, TX

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Join SpawGlass as a Facilities Technician, where you will be instrumental in executing high-quality and safe construction projects. Your support will be vital for our fast-paced and detail-oriented field operations. In this role, you will showcase your exceptional craftsmanship, adaptability, and teamwork skills while collaborating with project teams on a diverse range of specialized commercial construction, maintenance, renovation, repair, and light expansion projects. Your responsibilities will include a variety of carpentry and building tasks such as light framing, installation of both interior and exterior finishes, selective demolition, door and hardware installation, and general facility enhancements. You will ensure that all work aligns with project plans, timelines, and quality standards while maintaining a clean and hazard-free job site. Experienced technicians may have the opportunity to tackle more complex tasks, engage directly with clients, and provide innovative, field-driven solutions that meet budgetary constraints and project scopes, all while promoting continuous improvement in project execution. Successful technicians in this position will be dedicated to safety, craftsmanship, teamwork, and excellent customer service, striving to deliver outstanding results in a dynamic construction environment.

Nov 3, 2020

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On-Site Engineer at Trace3 | Houston, TX

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Full-time|$80.6K/yr - $116.9K/yr|On-site|Houston, TX

Who is Trace3?Trace3 stands as a premier Transformative IT Authority, delivering innovative technology solutions and consulting services tailored to our clients' unique needs. With a team of elite engineers and a commitment to dynamic innovation, we empower IT executives and their organizations to secure a competitive edge through a process of Integrate, Automate, Innovate.At Trace3, our culture embodies the vibrant spirit of a startup while harnessing the strengths of a scalable business. Employees are encouraged to cultivate their careers while enjoying the journey!Headquartered in Irvine, California, we employ over 1,200 professionals across the United States, with prominent offices in Denver, Indianapolis, Grand Rapids, Lexington, Los Angeles, Louisville, Texas, and San Francisco.Are you ready to explore the endless possibilities within technology?Join Our Team!Street-Smart - Thriving in Dynamic TimesWe adapt and thrive in a swiftly changing environment, continuously innovating and fostering constructive change while maintaining a focus on the larger picture. Our approach emphasizes sound business judgment, making high-quality decisions in a timely and cost-effective manner. We are highly creative, diving deep to uncover positive solutions for various challenges.Juice - The “Stuff” it takes to be a Needle MoverWe are results-driven, accomplishing tasks and leading without titles, empowering our colleagues through a proactive attitude. We visualize our goals and meticulously map out every milestone on the path to success.Teamwork - Humble, Hungry and SmartWe embody humility, recognizing how our roles contribute to the company's mission. We treat others with respect, acknowledge our mistakes, bestow credit where it’s due, and practice transparency. Our positive leadership and solution-oriented mindset create a supportive environment where we embrace each other's challenges, not just successes.

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Building Engineer at LPC | Houston, TX

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Mar 2, 2026

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