Process Engineering Intern

Mariana Minerals is a software-first, vertically integrated minerals company hiring a Process Engineering Intern to work on real, high-impact problems within the Pilot Plant Operations team in San Francisco. The role provides hands-on experience building and shipping solutions, not just supporting tasks.

Requirements

• Currently pursuing or recently completed degree in chemical engineering, metallurgy, materials science, or a related field
• Strong fundamentals in process design, thermodynamics, and reaction engineering
• Hands-on experience in a laboratory, pilot plant, or commercial scale plant through previous projects, coursework, and/or internships
• Ability to design experiments, troubleshoot problems, and analyze complex datasets independently
• Excellent technical writing, communication, and teamwork skills
• Comfortable working in fast-paced environments, wearing multiple hats, and managing ambiguity

Benefits

• Autonomy to make big decisions
• Tools to innovate
• Culture that values ownership, smart automation, and collaboration