# Staff Piping Engineer at Mariana Minerals

Staff Piping Engineer at Mariana Minerals in Houston, TX and 1 more. On-site, full-time, paying $170k–$210k. Posted April 17, 2026.

- Company: Mariana Minerals
- Location: Houston, TX and 1 more
- Workplace: On-site
- Job type: Full-time
- Pay: $170k–$210k
- Experience: 10+ years
- Posted: 2026-04-17
- Apply: https://jobs.ashbyhq.com/marianaminerals/8cf099aa-a149-4f5d-a690-583329acadd3/application
- Source: https://jobmagic.ai/jobs/manager-piping-design-engineering-mariana-minerals-182ccw

## Requirements

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

## 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!**