Mechanical Engineer - Mid​/Senior Level

MS Technology, Inc. is seeking a Mechanical Engineer with facility (e.g., piping/plumbing design, HVAC, facility utilities) and/or system (e.g., skids, pump systems, hydraulics/pneumatics) design experience to support complex nuclear and industrial projects. The ideal candidate will have experience developing piping system layouts, engineering deliverables, and design documentation in collaboration with multi‑disciplinary engineering teams.

• Support system and mechanical engineering design activities for complex industrial and nuclear projects
• Prepare and review engineering deliverables including P&IDs, specifications, calculations (e.g., pipe stress, hydraulic, safety valve sizing, ventilation sizing), and equipment arrangements
• Develop piping and utility system designs supporting facility infrastructure, process support systems, and operations
• Coordinate with process, structural, electrical, and I&C engineering teams
• Perform piping and mechanical system field walkdowns and support design verification activities
• Assist with piping system evaluations, equipment selection, and design modifications
• Support project planning, procurement, construction, startup, testing, and commissioning activities as needed
• Participate in design reviews and resolution of technical issues
• Interface with clients, vendors, subcontractors, and project teams as needed
• Ensure designs comply with applicable industry codes, standards, safety requirements, and client specifications

• Bachelor’s degree in Mechanical Engineering or related engineering discipline
• 9+ years of relevant experience
• Experience supporting piping and mechanical system design for industrial, manufacturing, energy, chemical, or nuclear facilities
• Familiarity with engineering drawings, P&IDs, piping layouts, and mechanical design documentation
• Knowledge of applicable industry codes and standards
• Experience supporting DOE, NNSA, Naval Reactors, or commercial nuclear projects preferred
• Experience with 3D modeling or CAD tools such as AutoCAD Plant 3D, CADWorx, Solid Works, CREO, or similar software preferred
• Experience with analytical software preferred (e.g., pipe stress analysis, hydraulic analysis, MathCAD, Mat Lab, etc.)
• US Citizenship required
• Must have the ability to acquire a security clearance
• PE License preferred

• Excellent customer service and communications skills.
• Ability to work both independently and as part of a team.
• Ability to deal with conflicts and stressful situations.
• Microsoft Office Word, Excel, PowerPoint, Access, SharePoint.

All eligible employees enjoy an excellent benefits package, including medical/dental/vision insurance, short/long‑term disability, life insurance, 401(k), paid time off including holidays, and tuition reimbursement.

MSTI is an equal‑opportunity employer. All qualified candidates, including individuals with disabilities and protected veterans, are encouraged to apply. MSTI is an E‑Verify employer. If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email: