Senior Mechanical Engineer - Nuclear
Listed on 2026-07-31
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Engineering
Mechanical Engineer
Chattanooga
629 Market St
Suite 200
Chattanooga, TN 37402, USA
Chattanooga
629 Market St
Suite 200
Chattanooga, TN 37402, USA
This position is not eligible for recruiting or sourcing by outside parties.
Disclaimer
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Mesa Associates is seeking a Senior Mechanical Engineer to provide technical leadership for design, analysis, procurement, construction, and implementation of modifications at commercial nuclear power plants and other nuclear facilities. The successful candidate will lead mechanical engineering scopes, serve as a technical point of contact, perform and oversee engineering analyses, and ensure that project deliverables satisfy applicable codes, standards, procedures, quality requirements, and client expectations.
This position is intended for an experienced engineer who can independently manage complex mechanical work, provide technical direction to engineers and designers, perform qualified reviews and checks, support proposals and project planning, and mentor less-experienced staff. The Senior Mechanical Engineer may act as the Mechanical Project Engineer for discipline-specific work and may support broader multidiscipline projects under an assigned Project Manager or Project Engineer.
Work Arrangement and Travel
- Hybrid schedule with a minimum of three days per week in the office, typically Tuesday through Thursday.
- Ability to travel to plant sites when required, normally approximately 6-8 days per month.
- Ability to support longer field assignments, implementation activities, or outage work when project needs require.
- Ability to satisfy client and site-access requirements, including unescorted nuclear plant access where applicable.
Required Education and Experience
- Active Professional Engineering registration. Candidates who are eligible and able to obtain their license within one year from active employment.
- Bachelor of Science degree in Mechanical Engineering from an ABET-accredited engineering program.
- Minimum of six years of relevant mechanical engineering, including at least four years supporting modifications at operating nuclear power plants.
- Demonstrated experience independently developing and coordinating mechanical engineering calculations, evaluations, specifications, drawings, reports, and design change packages.
- Demonstrated experience leading mechanical portions of projects, coordinating technical interfaces, and managing assigned scope, quality, schedule, and budget expectations.
- Strong working knowledge of applicable mechanical codes, standards, regulations, licensing-basis requirements, configuration-control practices, and accepted engineering methods.
- Experience performing or overseeing field walkdowns, evaluating existing plant configuration, defining design inputs and resolving field or constructability issues.
- Experience independently reviewing and checking mechanical calculations, specifications, drawings, and engineering change documentation in accordance with assigned qualifications.
- Effective technical writing, verbal communication, organization, leadership, and problem-solving skills.
- Ability to interface professionally with clients, vendors, project managers, construction personnel, and multidisciplinary engineering teams.
- Experience with one or more engineering design tools such as AutoCAD, Micro Station, Plant3D, Inventor, ANYSYS, Solidworks, ReCap, FARO Scene, Vault, or comparable software.
- Proficiency with Microsoft Office applications.
Preferred Qualifications
- Master of Science degree or other advanced engineering degree.
- Experience supporting multiple commercial nuclear clients; experience with Constellation Nuclear is beneficial.
- Experience with Industry Standard Design Procedure IP-ENG-001 or a comparable commercial nuclear design-change process.
- Experience performing or technically reviewing pipe stress analysis using AutoPIPE,…
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