Sr. Mechanical Designer @ NDBS
Kelso Industries
Salary undisclosed
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Description
Together We Build – Partnership, Innovation, Excellence, and Safety
At Kelso Industries, 5,000+ employees across 40+ companies work together to deliver exceptional HVAC, mechanical, plumbing, refrigeration, and electrical solutions nationwide. Join us to grow your career, make an impact, and be part of a team where innovation, excellence, and safety come first.
Recruiter Notice: We respectfully ask external recruiters and staffing agencies not to submit candidates. We only accept direct applications.
ABOUT NDBS
National Design Build Services (NDBS) is a mechanical design/build firm that designs and installs heating, ventilation, air conditioning and refrigeration (HVAC/R) systems for commercial and industrial buildings. We have been entrusted with more than 500 projects across the country, including healthcare, food processing, manufacturing, warehouses, office buildings and refrigerated warehouses.
Our designs focus on energy efficiency and limit life-cycle cost for building owners. We oversee every aspect of a project, from design development through close-out and commissioning. NDBS offers a strong benefits and compensation program and real career development opportunities.
JOB DESCRIPTION
We're looking for a Senior Mechanical Designer with 10+ years of experience in the layout and design of HVAC piping and sheet metal systems. You'll develop detailed, constructable designs in Revit, coordinate them in Navisworks and take projects from concept through installation. You'll partner with our engineers, guide junior designers, and make sure every design meets NDBS standards in the field.
POSITION INFORMATION
Item
Detail
Position Type
Full Time
Travel Required
<10%
Department
Engineering
Reports To
BIM Manager
Location
St. Louis, MO 63146
Schedule
On-site or Remote, Monday–Friday
RESPONSIBILITIES
- Lay out and design HVAC piping systems, including but not limited to chilled water, heating hot water, condenser water, steam, refrigeration and condensate
- Lay out and design sheet metal ductwork systems, including supply, return, exhaust and process air
- Develop detailed, constructable designs in Revit to project and company standards
- Run clash detection in Navisworks and resolve conflicts with other trades
- Produce construction drawings, plans, sections and details directly from the Revit model
- Size and route piping and ductwork with engineers, accounting for access, supports, hangers and installation sequencing
- Review designs and models from junior designers, and mentor them on piping and sheet metal best practices
- Participate in coordination meetings and track design issues through to closeout
- Support field engineering and installation teams, including RFI responses and field changes
- Maintain project documentation, model files and records
QUALIFICATIONS AND EDUCATION REQUIREMENTS
Required
- Minimum 10 years' experience in mechanical design in the HVAC or MEP industry
- Strong background in piping and sheet metal layout and design
- Strong proficiency in Revit (MEP) and Navisworks
- Working knowledge of AutoCAD, Bluebeam and Microsoft Office
- In-depth knowledge of HVAC piping and ductwork systems, fittings, supports and installation practices
- Ability to interpret Architectural, Structural, Civil, Electrical, Plumbing and Fire Protection documents and models
- Strong written and verbal communication skills
- Self-motivated, with the ability to manage multiple deadline-driven projects at once
Nice to Have
- Experience in data center, healthcare, food processing, industrial or refrigerated warehouse projects
- Experience producing fabrication-level sheet metal or piping models
- Spool drawing experience using tools such as Victaulic Tools for Revit, Revit Fabrication or Trimble SysQue
- Exposure to BIM execution plans and Common Data Environments (CDEs)
PHYSICAL & WORK REQUIREMENTS
- Operate standard office equipment, computers and related software
- Communicate effectively with engineers, designers, trade partners and field personnel to identify design and coordination issues and develop practical solutions
WHY NDBS
We're committed to attracting talented people who want a company with a strong foundation of success and an outstanding culture. We offer competitive compensation, comprehensive benefits and clear pathways for career advancement, with autonomy and flexibility in an entrepreneurial environment.
Why Join Kelso Industries?
Join us and be part of a team dedicated to creating efficient, sustainable, and high-performance environments that make a lasting impact across the industrial, commercial, and institutional sectors.
Here you will experience:
Growth Opportunities: Develop new skills, take on exciting challenges, and advance your career in meaningful ways.
Company Culture: You’ll thrive in an environment that supports your growth, values your contributions, and makes work fulfilling and enjoyable.
Impact: Your work directly contributes to meaningful outcomes, allowing you to see the difference you make and feel a sense of purpose every day.
Competitive Compensation & Benefits: You’ll be rewarded fairly for your contributions while enjoying perks that enhance your financial security, health, and overall well-being.
Kelso Industries celebrates diversity and is committed to creating an inclusive environment for all employees. We do not discriminate in any aspect of employment based on race, color, religion, national origin, ancestry, gender, sexual orientation, gender identity and/or expression, age, veteran status, disability, or any other characteristic protected by federal, state, or local employment discrimination laws where Kelso does business
About this role
NDBS, a mechanical design/build firm within Kelso Industries, is seeking a Senior Mechanical Designer to lead the layout and design of HVAC piping and sheet metal systems for commercial and industrial projects across the country. With 10+ years of experience required, you'll own detailed Revit models from concept through installation, coordinate designs in Navisworks to resolve conflicts with other trades, and produce construction-ready drawings and specifications. Your work will span diverse project types—healthcare, food processing, manufacturing, warehouses, and refrigerated facilities—all designed with energy efficiency and lifecycle cost in mind.
This role combines technical depth with mentorship and collaboration. You'll partner closely with engineers to size and route systems while accounting for installation sequencing and field access, guide junior designers on piping and sheet metal best practices, and support field teams through RFI responses and commissioning. Strong proficiency in Revit MEP and Navisworks is essential, along with solid working knowledge of AutoCAD, Bluebeam, and Microsoft Office. Experience with data center, healthcare, food processing, or industrial projects, plus familiarity with fabrication-level modeling or spool drawing tools, would strengthen your candidacy.
Based in St. Louis, the position is hybrid with minimal travel and reports to the BIM Manager. NDBS emphasizes career development, autonomy, and a collaborative culture within a larger organization of 5,000+ employees across 40+ companies. Direct applications only; external recruiters should not submit candidates.
How this employer is doing
solid
- Expanding
- Recently Raised Funding
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Pay for this role
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