Mechanical Design Engineer - Plant Piping Systems
General MatterLos Angeles, CA
Full Time
Posted February 18, 2026
$90k - $175k
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Application opens on company website
Listing evidence and provenance
- Source
- Greenhouse View original listing
- Freshness
- Open in the current public read path; this is not an employer guarantee.Last observed October 5, 2026
- Classification
- Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
- Pay provenance
- Employer-provided pay
Job Description
General Matter is seeking a Mechanical Design Engineer to transform conceptual process designs into fully engineered systems for a large-scale nuclear enrichment facility.
Key Responsibilities
- Translate P&IDs and process architecture outputs into detailed mechanical designs for piping and equipment systems.
- Perform component sizing and selection (pipes, valves, fittings, supports) based on process conditions (flow, temperature, pressure).
- Collaborate on routing plans and layouts for piping systems, ensuring efficient and maintainable configurations.
- Conduct structural and flow analysis to validate mechanical integrity and performance under operating conditions.
- Specify materials, thicknesses, and support methods to meet safety, regulatory, and operational requirements.
- Prepare detailed engineering drawings, BOMs, and procurement specifications for mechanical systems.
- Select components that meet technical requirements while considering availability and lead times, ensuring designs can be executed on schedule without compromising quality or safety.
- Collaborate with process engineers, structural engineers, and procurement teams to ensure seamless integration of designs.
- Participate in design reviews and risk assessments , providing technical justification for design decisions.
- Support installation planning and provide technical oversight during construction phases as needed.
Requirements
- 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.
- Excellent problem-solving and communication skills for cross-functional collaboration.
- Evidence of exceptional ability (prior projects, portfolio of work, completed products, etc).
- 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.
- Ability to work extended hours and weekends as necessary.
Benefits & Perks
- The base salary range for this role is $90,000–$175,000 annually.
- Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.
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