Senior Mechanical Engineer - Nuclear
Mesa Associates, Inc.
Job Description
Job Description
GIG Nuclear / Generation Industrial & Government
Disclaimer : Be cautious and only respond to emails from our “mesainc.com” domain. We will never ask for sensitive information, such as bank account details, SSN, etc., via email. If you receive any communication asking for such information, it is not from Mesa. For any concerns, or to verify the authenticity of a message, please contact us through our official channels.
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, MicroStation, 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, CAESAR II or comparable software.
- Experience with piping systems, valves, pumps, pressure equipment, HVAC, heat transfer equipment, or other mechanical plant systems and components.
- Familiarity with applicable mechanical codes and standards, which may include ASME, ANSI, API and NFPA requirements depending on project scope.
- Experience reviewing vendor drawings, technical submittals, equipment data, procurement specifications and commercial or technical bid evaluations.
- Experience supporting fabrication, construction, testing, implementation, outages, and field issue resolution.
Primary Responsibilities
- Lead the mechanical engineering scope for commercial nuclear modification projects and support multidiscipline project execution.
- Act as the Mechanical Project Engineer for assigned projects when required, with responsibility for technical scope, interfaces, quality, schedule, budget awareness, and client communication.
- Serve as technical point of contact for clients and provide mechanical disciple expertise during planning, design, procurement, construction, testing and implementation.
- Prepare, review, and coordinate mechanical calculations, evaluations, specifications, drawings, reports, and design change documentation.
- Establish and verify design inputs using plant drawings, calculations, procedures, specifications, licensing and design-basis documents, vendor information, field data, and applicable codes and standards.
- Prepare and coordinate engineering change packages for modifications at operating nuclear plants and associated nuclear facilities.
- Develop scoping documents, proposals, labor estimates, schedules, assumptions, exclusion, and required-input lists for mechanical engineering and design activities.
- Conduct and lead field walkdowns to verify plant conditions, identify interfaces, obtain measurements, evaluate constructability, and support installation planning.
- Coordinated mechanical requirements and interfaces with civil, structural, electrical, instrumentation and controls, procurement, construction, project management, clients, and vendors.
- Perform or oversee qualified reviews and checks of engineering calculations, specifications, drawings, and design change packages.
- Provide technical direction, task guidance, mentoring, and constructive review feedback to engineers and designers.
- Identify and resolve technical risks, missing information, field conflicts, design-basis concerns, constructability issues, and schedule or budget impacts.
- Review vendor drawings, technical submittals, equipment data, and procurement documentation for compliance with design and project requirements.
- Lead or support client meetings, design reviews, vendor discussions, constructability reviews, implementation support, testing, and outage activities.
- Maintain complete, accurate, and traceable engineering records in accordance with company and client procedures.
Successful Candidates Will
- Demonstrate sound engineering judgment and make technically defensible decisions using codes, standards, procedures, calculations, plant records, or field information.
- Interpret and apply codes, standards, client procedures, design criteria, regulatory requirements, licensing-basis information, and configuration-control requirements.
- Produce and oversee clear, accurate, organized, and traceable engineering documentation.
- Communicate expectations, status, risks, and required decisions early and professionally.
- Work effectively in a matrixed, multidisciplinary organization and communicate professionally with internal and external stakeholders.
- Adapt to changing project priorities and resolve problems in field, design, fabrication, and construction environments.
- Take ownership of technical quality and help build the capability of the mechanical engineering team.
Notice to External Search Firms: Mesa Associates, Inc. and its subsidiaries do not accept unsolicited resumes and will not be obligated to pay a placement fee for unsolicited resumes. Mesa Associates, Inc. Talent Acquisition engages with approved search firms directly for specific hiring needs
$84.76k - $129.5k
...Nuclear Power Plant Systems Design EngineerYou will be involved in nuclear power plant... ...operating nuclear power plantsFunctional mechanical drawings and/or drawings for nuclear... ...you will have the opportunity to:Develop engineering cost estimates for small to mid-sized...SeniorHourly payWork at officeLocal areaWorldwide3 days per week$126.42k - $230.33k
...Mechanical Engineer - Nuclear Power Together, we own our company, our future, and our shared success. As an employee-owned company, our people are Black & Veatch. We put them at the center of everything we do and empower them to grow, explore new possibilities and use...SuggestedWork experience placementWork at officeLocal areaFlexible hours- ...Job TitleGIG Nuclear / Generation Industrial & GovernmentJob DescriptionThis position... ...is a woman/minority-owned full-service engineering, procurement, and project management firm... ...LicensureBachelor of Science degree in Mechanical or Nuclear Engineering from an...SuggestedWork at officeWork from home
- ...Job Description Job Description GIG Nuclear / Generation Industrial & Government This position is not eligible for recruiting... ...channels. Mesa Associates is seeking a Mid-Level Mechanical Engineer to support the design, analysis, procurement, construction,...SuggestedWork at office3 days per week
- GIG Nuclear / Generation Industrial & Government This position is not eligible for recruiting or sourcing by outside parties... ..., Experience & Licensure Bachelor of Science degree in Mechanical or Nuclear Engineering from an accredited university (required) EIT (highly...SuggestedWork at officeWork from home
$74.35k - $113.6k
...Piping Engineering & Analysis SynopsisThe Piping Engineering & Analysis discipline performs... ...Skills and Experience:BS or MS in Mechanical Engineering, Engineering Mechanics, Aerospace... ...Business UnitJoin Sargent & Lundy's Nuclear Power Group and be part of a team driving...Hourly payWork at officeLocal areaWorldwide3 days per week- ...Civil - Senior Engineering Technician - Nuclear Power Together, we own our company, our future, and our shared success. As an employee-owned company, our people are Black & Veatch. We put them at the center of everything we do and empower them to grow, explore new possibilities...SeniorWork experience placement
- ...Senior Mechanical EngineerWe are currently hiring a Senior Mechanical Engineer in our Building Engineering division at our Chattanooga, TN office. The Building Engineering Division at LaBella provides complete building engineering services including mechanical, electrical...SeniorCurrently hiringWork at office
$165.61k - $253.02k
...Nuclear Power Engineering PositionNuclear Power is a carbon-free energy source. Our nuclear power generation clients are digitizing their existing power plants and building new nuclear power plants, small modular reactors (SMR). This is expanding work in the Instrumentation...SeniorHourly payContract workWork at officeLocal areaWorldwide3 days per week- ...Senior Mechanical EngineerCMTA, a Legence company CMTA is one of the fastest growing engineering firms in the U.S., with nationally recognized expertise in sustainable, high-performance building engineering. We are a collaborative, innovative, and energetic team that...SeniorFor contractorsLocal areaImmediate startFlexible hours
- ...for an inclusive meaningful career in power, distribution, transmission, engineering, design, technology, or innovation at Mesa Associates, Inc. Mesa Associates, Inc. is seeking a Senior Mechanical Engineer to work with other members of the mechanical engineering team...SeniorRemote workNight shift
- ...Job Description Job Description We are currently hiring a Senior Mechanical Engineer in our Building Engineering division at our Chattanooga, TN office. The Building Engineering Division at LaBella provides complete building engineering services including mechanical...SeniorTemporary workCurrently hiringWork at officeLocal areaFlexible hours
- ...Create accurate project specifications. · Ensure all engineering documents are up to date. · Develop standard work... ...competencies are: · A bachelor’s degree required in, Mechanical Engineering, Electrical Engineering, a related field or...SeniorWork from homeFlexible hours
- Sulzer is a leading engineering company with a proud heritage of innovation. Join our global... ...and regulatory requirements of the nuclear application.ESSENTIAL FUNCTIONS:Verifies... ...NoneQUALIFICATIONS:Requires a minimum of three (3), in mechanical engineering of rotating equipment...Permanent employmentFull timeTemporary workWork at office
$66k - $94.81k
...to utilize and expand your academic background in Structural Engineering in a professional position offering a wide range of interesting... ...designers from various disciplines involved in the design of new nuclear facilities, nuclear plant betterment and associated...Hourly payLocal areaWorldwideFlexible hours3 days per week$145.31k - $222k
...Nuclear Power I&c Engineer Nuclear power is a carbon-free energy source. Our nuclear power generation clients are digitizing their existing... ...management. These projects will require coordination with mechanical, electrical, and structural disciplines to bring the project...Hourly payLocal areaWorldwideFlexible hours- ...you MUST be located in our business footprint, which includes the following states: TN, KY, AL, GA, NCSummary: We’re in search for a Senior Automation Developer that is ready to innovate and explore what’s possible in the world of automation. In this role, you’ll work...SeniorRemote work
$77.89k - $119k
...Mechanical Design Engineer Under the direction of the Mechanical Project Lead, this position will offer you the opportunity to work with multi... .... About This Business Unit Join Sargent & Lundy's Nuclear Power Group and be part of a team driving the future of clean...SeniorHourly payWork at officeLocal areaWorldwideFlexible hours3 days per week$63k - $90.59k
...Description Nuclear power is a carbon-free energy source. We offer you the opportunity... ...and expand your academic background in engineering by digitizing nuclear power plants:... ...integration of electrical, computer, and mechanical engineering along with control theory....Hourly payFull timeInternshipLocal areaWorldwideFlexible hours- ...innovation in sustainable infrastructure and our expertise in engineering, procurement, consulting and construction, together we are building... ....The OpportunityBlack & Veatch is seeking an experienced Senior Power System Protection Engineer with 11-15 years' of experience...SeniorFull timePart timeWork experience placementWork at officeLocal areaRelocationVisa sponsorshipFlexible hours
- ...Mechanical Engineer I Sherman + Reilly, Inc. is a Chattanooga-based manufacturer of tools and equipment for the electric utility industry, serving utility companies, cooperatives, and line contractors around the world. As part of the Quanta Services family of companies...For contractorsInternship
$75k - $100k
...RFA Engineering Mechanical Design Engineer - HydraulicsRFA Engineering ( is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking a growth-oriented candidate to become an integral part of our...Full timeWork experience placementWork at officeFlexible hours- ...Mesa Associates, Inc is seeking candidates for a hybrid role in Mechanical or Nuclear Engineering. The position requires at least 3 office days and candidates must travel to plant sites approximately 6–8 days per month. Applicants should have a Bachelor of Science degree...Work at office
$160.12k
...perspectives. Join our team, and together we will make a difference and change the world. Job Description Are you a skilled Mechanical Engineer with expertise in HVAC and plumbing systems who is ready to take the next step in their career? This role offers the...Work experience placementH1bWork at officeLocal areaRemote workWork from home- ...Mechanical Engineer IIIJoin the team behind industry-leading utility equipmentSherman + Reilly is seeking an experienced and driven Mechanical Engineer III to join our Engineering team in Chattanooga, Tennessee. In this role, you will help design, develop, customize, and...Work at office
- ...A leading engineering firm is seeking an experienced professional to join their Nuclear Power Group in Chattanooga, Tennessee. This role involves designing nuclear power... .... The ideal candidate holds a BS or MS in Mechanical Engineering, has over 12 years of experience...
- ...Mechanical EngineerLincoln Electric is a high-performance industrial machinery and technology leader who helps customers manufacture... ...Range: $85,000 - $115,000 Target Bonus: 10%Purpose Mechanical Engineering position for the design of integrated tooling and equipment.Job...Part timeWork at officeLocal area
- ...Mechanical Engineer IIIInsight Global is seeking a Mechanical Engineer III for a top industrial equipment manufacturing client. This candidate will join a collaborative engineering team focused on designing, developing, and improving highly engineered equipment used by...Immediate start
- ...Senior IT Operations Engineer Position Summary: One to One Health is seeking a dedicated Senior IT Operations Engineer to provide essential IT support to our clinical and corporate staff, ensuring efficient performance in their roles. The successful candidate will report...SeniorRemote work
- ...Mid-Level Mechanical Engineer - Kiewit Power EngineeringLocation: Lenexa, KS; Houston, TX; Raleigh, NC; or Phoenix/Tempe, AZ. For roles in Chattanooga, TN; Detroit, MI; or Richmond, VA, the position will start remotely and transition to a hybrid/in office arrangement once...Full timeContract workWork at officeRemote workWeekend work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Mechanical Engineer - Nuclear. Be the first to apply!
- nuclear engineer Chattanooga, TN
- nuclear licensing engineer Chattanooga, TN
- senior network engineer remote Chattanooga, TN
- senior manager legal Chattanooga, TN
- sr project manager Chattanooga, TN
- senior commercial counsel Chattanooga, TN
- senior manager tax Chattanooga, TN
- senior construction accountant Chattanooga, TN
- senior living Chattanooga, TN
- senior implementation project manager Chattanooga, TN



