# Staff Piping Engineer

**Company:** [Mariana Minerals](https://zerogtalent.com/frontier-companies/mariana-minerals)
**Location:** Houston, TX
**Work mode:** On-site
**Employment type:** Full Time
**Salary:** USD 170K–210K/yr
**Category:** Mechanical
**Department:** Other
**Listed:** 2026-04-17

[View and apply on Zero G Talent](https://zerogtalent.com/frontier-jobs/mariana-minerals/engineering-manager-piping-stress-analysis-8cf099aa-a149-4f5d-a690-583329acadd3)

## Job description

### **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 the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.

**Role Overview**

We are hiring a Staff Piping Engineer to build and lead the piping discipline behind our refining and minerals processing facilities.

You will split your time between acting as an owner’s engineer – defining standards and managing contractors' piping engineering – and performing piping engineering work personally. You'll work with piping designers to deliver small- to large-scale projects across a full range of operating conditions. You will also work with our software teams to build tools to accelerate the delivery of piping designs.

**What You’ll Do**

-   Manage piping engineering across all project scopes including, from small brownfield modifications to major greenfield facilities
    

-   Load-balance work across concurrent projects, hold the schedule for piping deliverables, and coach designers through the work
    

-   Attract non-conventional engineering talent to piping design and engineering positions to develop advanced automation solutions
    

**Develop engineering workflows and standards**

-   Develop and implement the piping design workflow itself: the path from P&ID to IFC, what gets checked at each gate, and who signs off
    

-   Develop piping related standards, templates and specifications
    

-   Automate the repetitive work with our software team: model-to-stress data exchange, spec-driven checks, quantity reporting, and QC scripting
    

**Own the engineering and stress scope**

-   Own the pipe stress program: set the criteria, decide which lines are critical, and approve every package
    

-   Direct dynamic analyses, including slug flow, water hammer, relief valve transients, and vibration
    

-   Own piping material specifications, valve specs, and engineering standards, including material selection for hydromet, pyromet, and reagent services
    

-   Design and specify pipe supports, guides, anchors, expansion joints, and specialty components, and own the support detail standards
    

-   Ensure all piping systems comply with ASME B31.3 and B31.1, where applicable
    

-   Drive piping procurement and support construction and commissioning, covering bulk material strategy, long-lead valves and specialty items, field RFIs, redlines, and as-built model closeout
    

**What You’ll Bring**

-   10+ years in piping design and engineering, delivered in an EPC, EPCM, or owner capital projects environment
    

-   Direct experience leading piping engineering teams, including contractor oversight
    

-   Track record building piping design workflows and standards
    

-   Strong pipe stress background in CAESAR II
    

-   Deep working knowledge of ASME B31.3, including allowable load definition and nozzle load evaluation
    

-   Experience developing piping material and valve specifications and pipe support design criteria
    

-   Bachelor's degree in Mechanical Engineering or a related field
    

**Preferred but not required**

-   Professional Engineer (PE) license, or the ability to obtain one
    

-   Mining, mineral processing, metallurgical, chemical, or heavy industrial facility experience
    

-   Experience with slurry, reagent, and high-temperature piping, including refractory-lined, lined, and non-metallic systems
    

-   Experience with scripting or model-based design automation
    

  

### **Our culture is built on four principles:**

  

**Everyone Gets Home Safe.** We never put speed or cost ahead of people.

**Extreme Ownership.** We take full responsibility for outcomes, relentlessly driving toward solutions.

**Engineer Out Requirements, then Automate.** We simplify, optimize, and then automate for scale.

**Share Your Legos.** We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.

  

**Join us as we build the future of responsible mineral sourcing and supply!**

## Other open roles at Mariana Minerals

- [Workplace Manager](https://zerogtalent.com/frontier-jobs/mariana-minerals/workplace-manager-3ae0d810-7760-4a1a-a016-7ee2d0c5f13d) — Houston, TX
- [Stacking/Sizer Operator](https://zerogtalent.com/frontier-jobs/mariana-minerals/stacking-sizer-operator-e3d0977c-fcc8-4b97-b57e-577bd715e787) — Moab, UT
- [R&D Technician](https://zerogtalent.com/frontier-jobs/mariana-minerals/r-d-technician-10981f0a-1672-4add-a3ba-fe5752df1686) — San Francisco HQ
- [Analytical Lab Chemist](https://zerogtalent.com/frontier-jobs/mariana-minerals/analytical-lab-chemist-aa6e92e1-680e-4470-8737-c3b7c82280d3) — San Francisco HQ
- [Senior/Staff Chemical Process Engineer](https://zerogtalent.com/frontier-jobs/mariana-minerals/senior-staff-chemical-process-engineer-29a1a6e4-db3f-406d-af65-e7c00c3d8ff6) — San Francisco HQ

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