MS Technology, Inc. is seeking a Mechanical Engineer, P.E. 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. Location: Onsite and/or Hybrid in Oak Ridge, TN Salary Range: Depending on Experience  Responsibilities: * 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 MINIMUM QUALIFICATIONS * Bachelor’s degree in Mechanical Engineering or a related engineering discipline * 9+ years of relevant engineering 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 * U.S. Citizenship required * Professional Engineer (PE) license * Must have the ability to acquire a security clearance PREFERRED QUALIFICATIONS: * Experience supporting DOE, NNSA, Naval Reactors, or commercial nuclear projects * Experience with 3D modeling or CAD tools such as AutoCAD Plant 3D, CADWorx, SolidWorks, CREO, or similar software * Experience with analytical software such as pipe stress analysis, hydraulic analysis, MathCAD, MATLAB, or similar tools Additional Skills: * 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.   Benefits: 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. EEO Statement: 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: HR@mstechnology.com. EEO Employer/Vet/Disabled