Staff Process Engineer

Mariana Minerals
Houston
Workplace: OnsiteFull timeUSD 140,000 - 175,000 annuallyFunction: Industrial, Process & Manufacturing EngineeringExperience: 5+ yearsSkills: ["Communication","Teamwork","Technical writing","Problem-solving"]

Lead the design, deployment, and operation of pilot-scale mineral processing systems, bridging R&D and plant operations. Own equipment design, process optimization, and documentation while collaborating with technicians, engineers, and software/ML teams to enable scalable, safe production in a fast-paced pilot plant environment.

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Mariana Minerals
Mariana Minerals
4 months ago

Staff Process Engineer

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Source: Company careers pageValidated by: Fursa AI
Last checked: 6 hours agoStatus: Live

Job Summary

Lead the design, deployment, and operation of pilot-scale mineral processing systems, bridging R&D and plant operations. Own equipment design, process optimization, and documentation while collaborating with technicians, engineers, and software/ML teams to enable scalable, safe production in a fast-paced pilot plant environment.
Location: Houston
Workplace: Onsite
Employment Type: Full time
Job Function: Industrial, Process & Manufacturing Engineering

Key Responsibilities

  • •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

Pay and Benefits

Salary: USD 140,000 - 175,000 annually
Equity and Bonus:Equity
Perks:Equity

Key Requirements

  • •BS, MS, or PhD in Chemical Engineering or related field; 5+ years 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 unit operations and equipment such as kilns, furnaces, ion exchange, solvent extraction, solid-liquid separation, leaching, electrowinning; Ability to design experiments, troubleshoot complex processes, and analyze operational datasets
Experience:5+ yearsMinerals processingChemicalsOil & gas
Education:
Skills:CommunicationTeamworkTechnical writingProblem-solving
Languages:English

Company Brief

Mariana Minerals
Software-first, vertically integrated minerals company developing extraction, processing, and automation systems to supply critical minerals (lithium and others) for energy, AI, and defense technologies, and building commercial-scale lithium facilities from produced water.
Industry: Mining & Metals
Company Size: Small (11 to 50 employees)
Growth: Early Stage Startup
Funding: Series A
Headquarters: San Francisco, United States
WebsiteLinkedInGlassdoor