Mariana Minerals
Senior/Staff Chemical Process Engineer
$140K–$175K
San Francisco HQ · On-site · Staff · Full-time · Posted Oct 26, 2026
About the job
Leads the design, scale-up, and deployment of mineral-refining processes and equipment, while collaborating on software and automation for capital project execution and plant optimization.
What you'll do
- Lead process and equipment scopes from concept through design, procurement, installation, commissioning, ramp, and handover.
- Develop refinery heat and material balances, process diagrams, and first-principles models; evaluate and optimize process designs.
- Coordinate with equipment providers and cross-functional teams, including software and machine learning teams, to deliver integrated refining systems and automation.
What they ask for
- Strong understanding of engineering fundamentals and ability to apply them to complex problems.
- Foundation in chemical, metallurgical, or process engineering.
- Experience with plant and equipment engineering and design, including brownfield modifications, greenfield design, or operating-facility evaluation and optimization.
- Experience in industrial manufacturing, large-scale mining or mineral processing, large-scale chemical production, or EPC/EPCM firms.
Pay
$140K – $175K (base salary)
Tools
Process Flow Diagrams (PFDs), Piping & Instrumentation Diagrams (P&IDs)
AI focus
Collaborates with software and machine learning teams to automate capital project execution workflows and develop equipment and plant optimization algorithms.
Model-written summary · the original posting is authoritative