Engineering Design Manager — Industrial Mineral Projects

Mariana Minerals; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Mariana Minerals is seeking a Design Manager to lead detail engineering for minerals processing facilities, coordinating internal and external teams, managing workflows, and ensuring on-time, safe delivery. You will own design interfaces, drive cross-discipline reviews, and build relationships with partners while upholding safety, quality, and regulatory standards.

The role emphasizes hands-on leadership, proactive problem-solving, and applying first-principles thinking in a fast-paced

Qualifications

• Bachelor’s degree in engineering (mechanical, civil, chemical, or related discipline).
• 7–15+ years of relevant experience in project engineering, management, or EPC/EPCM environments.
• Familiarity with engineering project workflows including planning, risk management, document control, design reviews, RFI management, and vendor coordination.
• Strong communication and coordination skills across disciplines and with external partners.
• Ability to work in a fast-paced, first-principles-oriented environment with competing priorities.

Responsibilities

• Lead the detail design of industrial facilities, especially minerals processing plants, with responsibility for integrated technical design and execution.
• Manage engineering activities across internal teams, external partners, and vendors.
• Develop and maintain project workflows and design activities; support document control and deliverables.
• Coordinate cross-discipline reviews with process, mechanical, structural, piping, electrical, instrumentation, and construction teams.
• Own project performance for cost and schedule against established metrics; build relationships with partners and contractors.

Skills

Leadership & mentoring

Project management

Communication

Cross-discipline coordination

First-principles thinking

Education

Bachelor's degree in engineering

Tools

RFI management

Vendor coordination

Job description

Mariana Minerals is seeking a Design Manager to lead detail engineering for minerals processing facilities, coordinating internal and external teams, managing workflows, and ensuring on-time, safe delivery. You will own design interfaces, drive cross-discipline reviews, and build relationships with partners while upholding safety, quality, and regulatory standards.

The role emphasizes hands-on leadership, proactive problem-solving, and applying first-principles thinking in a fast-paced