# Staff Process Engineer

**Company:** [Mariana Minerals](https://hotfix.jobs/companies/mariana-minerals)
**Location:** Houston, TX
**Role:** DevOps / SRE
**Salary:** $140k – $175k/yr
**Experience:** 10+ years
**Skills:** Chemical Engineering, Process Design, P&Id, Pilot Scale Operations, Leaching, Solvent Extraction, Ion Exchange, Electrowinning, Solid-Liquid Separation, Kilns, Furnaces, Data Analysis, Process Optimization, Ehs, Automation Tools
**Posted:** 2026-03-24

> Leads design, operation, and optimization of pilot-scale minerals processing equipment and experiments. Bridges R&D to commercial scale with 10+ years experience in chemical/process engineering and unit operations like leaching and electrowinning.

## Job Description

## 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
- 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

## Requirements
- 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

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