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General Matter

Mechanical Design Engineer - Plant Piping Systems

General Matter · Los Angeles, CA

Posted about 3 months ago · $90,000–$175,000

or apply directly on General Matter's site. We never take the application ourselves.

Is this posting real?

This role has been open
82 days
General Matter's roles stay open a median of 80 days
Reposted
No
Salary listed
Yes
99% of General Matter's roles list one
Ghost-job risk at General Matter
high
128 stale, 1 reposted of 138 open
Hiring momentum
156 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-24

Measured from postings appearing on and disappearing from General Matter's own greenhouse board since 2026-08-03. Full hiring picture for General Matter.

About this role

As a Mechanical Design Engineer focusing on Plant Piping Systems, you will be responsible for transforming conceptual designs into detailed mechanical systems for a nuclear enrichment facility. Your day-to-day tasks will include designing piping systems, conducting structural and flow analyses, collaborating with other engineers, and preparing engineering drawings and specifications. You will ensure that all designs meet safety and regulatory requirements while also considering project timelines and component availability.

Our read on this posting3.4out of 5
benefits
2/5
freshness
1/5
career value
4/5
role clarity
5/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of General Matter as an employer.

What you need

  • Bachelor’s degree in Mechanical Engineering or a related field
  • 3+ years of experience in mechanical design for industrial plants, chemical facilities, or similar high-hazard environments
  • Strong understanding of fluid mechanics, structural analysis, and material selection
  • Proficiency in piping design standards (ASME, ANSI, or equivalent) and familiarity with pressure vessel codes
  • Experience with CAD tools for mechanical design and layout
  • Ability to interpret P&IDs and process documentation and translate them into detailed mechanical designs

Nice to have

  • Experience in nuclear, chemical, petrochemical, or gas processing facilities
  • Familiarity with stress analysis tools and piping flexibility analysis (e.g., Caesar II or similar)
  • Knowledge of compressible flow, vacuum systems, and cryogenic piping design
  • Procurement experience for large-scale facilities, including vendor engagement and managing long-lead components
  • Ability to thrive in a fast-paced, multidisciplinary environment, balancing technical rigor with practical constraints

What you get

  • Base salary range of $90,000–$175,000 annually
  • Eligibility for long-term incentives in the form of stock options
  • Access to medical, vision & dental coverage
  • Access to a 401(k) retirement plan

Worth weighing

  • No specific mention of remote work options
  • Role involves working extended hours and weekends as necessary
  • The salary range is broad and may vary based on individual qualifications and market conditions

Summarised from General Matter's posting. Read the full original.

Listed by General Matter on their greenhouse job board, last confirmed open on 2026-10-24. PitchMeAI is not the employer.

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