Senior Mechanical Designer 1 (Plant 3D / Revit Projects) - Nuclear

careers-sargentlundy; Chattanooga (TN); Hybrid; USD 78,000 - 119,000; Full time

Benefits offered by this job

Hybrid work schedule

Health plans

401(k)

Paid time off

Professional development

Employee well-being programs

Job summary

Sargent & Lundy is seeking a senior mechanical designer to develop plant layout drawings in 3D, including piping isometrics and equipment layouts. You will use AutoCAD Plant 3D, Revit, and Navisworks to deliver designs, resolve clashes, and coordinate with multi-discipline teams.

Hybrid role requiring in-office work three days per week in the Chattanooga area. Extensive experience in mechanical plant design and 3D modeling is required, with mentoring responsibilities for junior designers.

Qualifications

• Essential: Experienced with AutoCAD Plant 3D and related toolsets (AutoCAD Mechanical, MEP, Map 3D).
• Essential: Proficient with Navisworks Manage and Revit for 3D model development.
• Essential: 10+ years of detailed mechanical plant design experience (piping, supports, equipment layout).
• Desirable: Experience with Autodesk Construction Cloud, MicroStation, Microsoft Office tools.

Responsibilities

• Develop mechanical general arrangement, piping isometrics, pipe supports, and equipment layouts in 3D.
• Generate design deliverables, BOMs, and commodity lists.
• Interpret P&ID and align 3D model with engineering requirements.

Skills

AutoCAD Plant 3D

Navisworks Manage

Revit

AutoCAD Mechanical

MAP 3D

MEP modeling

P&ID integration

3D plant layout

Education

Tools

AutoCAD Plant 3D

AutoCAD Mechanical

Revit

MAP 3D

Navisworks Manage

Job description

Responsibilities

• 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
• 10 or more 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

Technology & Innovation

Sargent & Lundy values the appropriate use of technology to improve how work gets done and deliver high-quality outcomes for our clients. Depending on the role, employees may use data, automation, artificial intelligence, and other digital tools to support research, analysis, engineering and design activities, workflow improvement, or other aspects of their work. We value candidates who demonstrate an interest in learning and effectively using emerging technologies where relevant to their role. Employees remain accountable for their work and are expected to apply appropriate professional judgment and review when using technology-assisted tools. Experience with AI, automation, programming, or similar technologies is valued where relevant but is not required unless specifically identified elsewhere in the job description.

About Sargent & Lundy

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

$77,890 - $118,999

Transparency 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!

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.