About Mariana Minerals
Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies.
We’re reimagining how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply.
Role Overview
Mariana Minerals is looking for a highly motivated Engineering Manager, Piping & Stress Analysis, with experience managing a piping design department, completing pipe stress analysis, and developing and implementing pipe, pipe support, and valve specifications. Mariana Minerals is building the critical minerals supply chain to support the world’s energy transition.
As an Engineering Manager, Piping & Stress Analysis at Mariana Minerals, you will lead the development and deployment of first-of-its-kind chemical refining processes, while also supporting development of software for capital project execution and automated plant optimization. Responsibilities will include leading basic and detailed engineering strategies, managing external engineering firms, staff-aug contractors, and internal teams, developing issued-for-construction engineering packages for piping and static equipment.
What You’ll Do
Lead and manage a piping team of internal, staff-aug, high-value engineering center, and third party engineering firm piping designers
Oversee execution of piping engineering deliverables across multiple projects
Establish and maintain piping design standards, specifications, and best practices
Perform pipe stress analysis using Caesar II, including flexibility analysis, thermal expansion, and load cases
Conduct dynamic analyses such as slug flow, water hammer, and vibration assessments
Define allowable loads, evaluate equipment nozzle loads, and ensure compliance with applicable codes
Develop, maintain, and update piping material specifications and engineering standards
Design and specify pipe supports, guides, anchors, expansion joints, and specialty components
Provide detailed markups and technical guidance for piping layouts, isometrics, and support designs
Review and approve 3D models (Plant3D, CADWORX, Revit) to ensure constructability and compliance with stress and design requirements
Generate and review bills of materials for piping systems and supports
Ensure all piping systems comply with ASME B31.3
Review and approve key deliverables including isometrics, support drawings, material submittals, and vendor packages
Collaborate with process, mechanical, and structural teams to optimize system design
What You’ll Bring
Bachelor’s degree in Mechanical Engineering or related field
10+ years of experience in piping engineering, with demonstrated leadership responsibilities
Strong foundation in piping engineering with deep understanding of stress analysis and design principles
Extensive experience with ASME B31.3 piping code
Expertise in pipe stress analysis tools (Caesar II required; Nozzle Pro preferred)
Experience developing piping specifications, standards, and support design criteria
Familiarity with 3D design platforms such as Plant3D, CADWORX, Revit, and Navisworks
Experience managing or leading piping teams within an EPC or EPCM environment
Professional Engineer (PE) license or ability to obtain (preferred)
Experience in one or more of the following:
Industrial manufacturing
Mining or mineral processing
Chemical processing or large-scale industrial plants
Engineering, Procurement, and Construction (EPC) organizations
Mariana is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status.
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