Principal Mechanical Engineer

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We’ve got the power to energize your career and spark YOUR work/life balance through professional development and exceptional benefits. Don’t delay, plug in today for an inclusive and meaningful career. Mesa Associates, Inc. is a woman/minority-owned full-service engineering, procurement, and project management firm covering power, defense, aerospace, industrial, commercial, and municipal entities. We specialize in power generation and delivery services. We have been in the top 10 of EC&M's Top 40 Electrical Design Firms since 2012.

With over 1,000 associates, we are big enough to perform, but small enough to care!

Mesa Associates is seeking a Principal Mechanical Engineer to serve as the senior advisor for our Piping & Pressure Systems practice, delivering projects for our Generation, Industrial, and Government clients. This role is centered on review and guidance rather than day-to-day design production: you will bring deep piping and pressure vessel expertise and strong power industry experience to catch issues, verify code compliance, and steer engineers across the department toward sound technical decisions, rather than producing the bulk of the designs yourself.

We're looking for someone who leads by example, communicates clearly, and genuinely enjoys helping others get it right.

What We're Looking For

• Expert knowledge of mechanical design codes including ASME, ANSI, API, and NFPA, with deep specialization in ASME B31.1/B31.3 piping codes and ASME Boiler & Pressure Vessel Code Section VIII, API 650, and API 620
• Extensive, well-rounded experience across piping and pressure vessel design for the power industry specifically, including coal, gas, and hydro generation, gained over a long career in the field
• Sharp eye for identifying design errors, code gaps, and constructability issues in piping and pressure vessel calculations, drawings, and specifications produced by others
• Strong background in stress analysis of piping systems, custom piping components, and fabrication assemblies, with knowledge to check work performed using AutoPIPE and/or Caesar II
• Working knowledge of pressure vessel and tank design fundamentals, including nozzle loading, wall thickness, and code stamping requirements, sufficient to independently verify others' calculations
• Comfortable reading and checking Plant3D, AutoCAD, Micro Station, and Solid Works piping isometrics, layouts, and 3D models produced by the team
• Recognized depth of experience across a wide range of piping and pressure vessel project types, serving as a natural go-to resource for the department

What You'll Do

• Serve as the technical checker for piping and pressure vessel designs, calculations, and drawings produced by the team, verifying code compliance and engineering accuracy before issue
• Review and check detailed stress analysis and pressure vessel calculations for major projects
• Advise engineers on piping and pressure vessel code questions, design approach, and problem-solving throughout the project lifecycle
• Perform independent spot checks and occasional walkdowns to verify field conditions match design assumptions
• Weigh in on complex or unusual piping and pressure vessel challenges where deep power industry experience is needed
• Stamp piping and pressure vessel deliverables as the reviewing engineer of record where appropriate