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Senior Mechanical Designer 2 (Plant 3D / Revit Projects) - Nuclear
Company : Sargent &lundy
Location : Chattanooga, TN, 37402
Job Type : Full Time
Date Posted : 10 January 2026
Description
- Under the direction of the Mechanical Project Lead, this position will offer you the opportunity to work with multi-disciplined engineering and design project teams in developing mechanical general arrangement, piping isometric, pipe support, and mechanical equipment layout drawings in a 3-D model
- Utilize Autodesk’s AutoCAD Plant 3D and Revit modeling software to generate mechanical design deliverables, BOMs, and commodity lists
- Understand and interpret piping & instrumentation diagrams developed using Plant 3D and create physical design consistent with the engineering requirements
- Act as the mechanical design team lead in the coordination of detailed design phases for all aspects of an integrated mechanical design model
- Resolve clashes and discrepancies in the 3D model and report status
- Coordinate and provide guidance to other designers and project team members to ensure a complete and timely design
- Independently plan and execute design of mechanical deliverables
- Provide guidance as a mentor in the development of less experienced drafters and designers
This position is based on a hybrid work schedule and will require in-office work 3 days per week.
Qualifications
We do not sponsor employees for work authorization in the U.S. for this position.
Essential skills and experience:
- Experienced and proficient with AutoCAD Plant 3D software and other tool sets including AutoCAD Mechanical, MEP, and Map 3D. Experienced and proficient with Navisworks Manage and Revit software including the following:
- Understanding of the integration aspects of P&IDs with 3D model development
- Clash detection resolution
- Discrepancy checks between deliverables
- Interface with IT Administrators in the development of mechanical deliverable templates and catalogs
- Drawing Presentation Set Up
- Plant 3D and Revit model data management
- 12 years of detailed design experience in the development of mechanical plant design drawings; piping, pipe supports and equipment layout
- Proficiency with design software tools in executing 3D plant layout models
- Experience in the review of project deliverables and drawing requirements
- Experience in the review of vendor drawings and interface points
- Ability to interface with engineering and design teams of other disciplines in the plant design process.
Valued but not required experience:
- Autodesk Construction Cloud, MicroStation
- Microsoft Office tools
Award-Winning Benefits
At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.
Health & WellnessFinancial BenefitsWork-Life Balance- Health Plans: Medical, Dental, Vision
- Life & Accident Insurance
- Disability Coverage
- Employee Assistance Program (EAP)
- Back-Up Daycare
- FSA & HSA
- 401(k)
- Pre-Tax Commuter Account
- Merit Scholarship Program
- Employee Discount Program
- Corporate Charitable Giving Program
- Tuition Assistance
- First Professional Licensure Bonus
- Employee Referral Bonus
- Paid Annual Personal/Sick Time (PST)
- Paid Vacation
- Paid Holidays
- Paid Parental Leave
- Paid Bereavement Leave
- Flexible Work Arrangements
Compensation Range
$82,120.00 - $128,570.00Transparency Statement
Sargent & Lundy discloses compensation ranges that comply with all local and state regulations. The total compensation package for eligible positions will include a base salary or an hourly rate and a comprehensive benefits package, reflecting our commitment to rewarding performance and supporting the overall well-being of our employees. Individuals may also be eligible to participate in our yearly discretionary bonus.About This Business Unit
Join Sargent & Lundy's Nuclear Power Group and be part of a team driving the future of clean, carbon-free energy. Since 1954, we’ve been a trusted leader in nuclear engineering, design, and licensing, with expertise spanning small modular reactors (SMRs), advanced reactor technology (ART), and first-of-a-kind commercial reactor restart projects. Our work supports life extensions and digital modernization of existing nuclear plants, coal-to-nuclear conversion initiatives with the Department of State, and international nuclear new-build projects. With a commitment to safety, innovation, and sustainability, we provide cutting-edge solutions that power communities worldwide while reducing emissions. Shape the future of global energy with us!
Awards & Recognition
Equal Opportunity
Sargent & Lundy is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any protected status as defined by applicable law.
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Frequently asked questions
Senior Mechanical Designers 2 play a crucial role in ensuring nuclear plant safety by meticulously developing 3D mechanical layouts and resolving design clashes, especially using tools like AutoCAD Plant 3D and Revit. Their detailed design expertise contributes directly to safe and compliant nuclear engineering projects in Chattanooga’s specialized industry.
Expertise in integrating piping & instrumentation diagrams with 3D models, proficiency in clash detection, and managing mechanical design data are critical. Mastery of Autodesk software suites and experience mentoring junior designers further distinguish Mechanical Designer 2 professionals in nuclear-focused environments.
Senior Mechanical Designers with nuclear expertise can advance into project leadership, engineering management, or specialized roles in digital modernization and reactor restart initiatives. Continuous skill upgrading in advanced 3D modeling and nuclear compliance standards enhances upward mobility in this niche sector.
The salary typically ranges from $82,120 to $128,570 annually. This competitive package reflects the complexity of nuclear mechanical design work, combined with an award-winning benefits program offering healthcare, paid leave, and bonuses tailored for senior roles in Chattanooga.
While formal certifications may not be mandatory, proficiency with Autodesk Plant 3D, Navisworks, and Revit is essential. Familiarity with nuclear engineering standards and experience in mechanical plant design significantly boost a candidate’s attractiveness to local employers.
Sargent & Lundy fosters a collaborative environment emphasizing safety, innovation, and sustainability. Senior Mechanical Designers benefit from mentorship opportunities, hybrid work schedules, and a supportive culture recognized by multiple workplace excellence awards, enriching professional satisfaction.
Balancing complex 3D modeling integrations, resolving design discrepancies, and coordinating multi-disciplinary teams require advanced problem-solving. The role demands precision to meet stringent nuclear safety standards while managing evolving design requirements in a high-stakes environment.
Chattanooga’s growing focus on clean energy and nuclear modernization has increased demand for mechanical designers familiar with Plant 3D and Revit. While competition exists, those with substantial nuclear project experience and advanced modeling skills stand out in the local job market.
Chattanooga offers manageable commute times with hybrid work models common in engineering firms. The city’s affordable cost of living and access to outdoor amenities support a positive work-life balance, aligning well with the hybrid in-office schedule expected by employers like Sargent & Lundy.
Mentorship is embedded in the role, where Senior Mechanical Designers lead design teams and guide less experienced drafters. This fosters skill development, knowledge transfer, and team cohesion, ensuring design excellence and career growth within the nuclear engineering group.