Senior Process Engineer - Mineral Refining & Automation Lead

Speedrun Talent Network; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Mariana Minerals is seeking a Sr./Staff Process Engineer in California to lead chemical refining process development and deployment for critical mineral supply chains. You will drive design from concept through commissioning, working with lab, pilot, and project teams to scale processes from lab to commercial plant.

Join a mission-focused company building automation-enabled, scalable mineral refining solutions for energy, AI, and defense technologies.

Qualifications

• Strong foundation in engineering and ability to solve complex problems.
• Background in chemical/metallurgical/process engineering.
• Experience with plant and equipment engineering and design.
• Brownfield modifications and upgrades experience.
• Greenfield design experience.
• Optimization of operating facilities.
• Industrial manufacturing background.
• Experience in mining or mineral processing environments.
• Experience with large-scale chemical production processes.
• Exposure to EPC/EPCM firms and project execution.

Responsibilities

• Lead process area and equipment scopes from concept to handover.
• Manage external equipment providers and licensors.
• Build heat and material balances for integrated mineral refineries.
• Develop PFDs and P&IDs for mineral refineries.
• Build first-principles models of reactors and unit ops.
• Identify and implement engineering solutions to optimize designs.
• Collaborate with lab, pilot plant, process, and project teams to scale designs.
• Collaborate with software/ML teams to automate capital project workflows.

Skills

Strong engineering fundamentals

Chemical/metallurgical/process eng

Plant & equipment engineering and CAD/

Brownfield design

Greenfield design

Facility optimization

Industrial manufacturing

Mineral processing (hydrometallurgy/eM

Large-scale chemical production

EPC/EPCM experience

Job description

Mariana Minerals is seeking a Sr./Staff Process Engineer in California to lead chemical refining process development and deployment for critical mineral supply chains. You will drive design from concept through commissioning, working with lab, pilot, and project teams to scale processes from lab to commercial plant.

Join a mission-focused company building automation-enabled, scalable mineral refining solutions for energy, AI, and defense technologies.