Mechanical Design Engineer @ NDBS

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.
Design Engineer
About NDBS
National Design Build Services (NDBS) is a mechanical design/build firm based in St. Louis, MO. We design and deliver HVAC, refrigeration and process systems for commercial, industrial and mission-critical facilities, including food processing, manufacturing, data centers, and refrigerated warehouses. NDBS is part of the Kelso Industries family of MEP+ companies, which shares the core values of Partnership, Innovation, Excellence and Safety. We take projects from design through fabrication and field installation, using off-site prefabrication partners where it improves schedule, quality and job-site safety. NDBS offers an excellent benefits and compensation program and strong career development opportunities.
Position Description:
The Mechanical Design Engineer at NDBS is involved in all aspects of the HVAC design / build process. From project conception through the details of design and field coordination, you will work with our staff of experts sharing and gaining practical knowledge and experience unmatched in this industry. This position is responsible for delivering project design assignments within time and budget parameters while satisfying client contracts, either through a team of engineers or individually.
Position Information
Position Type: Full Time
Travel Required: 20-30%
Department: Engineering
Location: St. Louis, MO 63146 OR Remote, United States
Skills & Responsibilities (including but not limited to):
Adhering to NDBS Core Values
Safety
We Answer Our Phones
Always Innovating
Collaborative Partnerships
Reputation
Entrepreneurship
Design and Technical:
Perform load calculations for projects.
Design and plan layouts of equipment, duct and piping systems.
Drive the development of HVAC design from the initial concept through construction drawings utilizing Revit.
Application engineering including but not limited to Sequence of Operations, load calculations, psychometrics, and refrigeration.
Engages in several levels of field engineering, assisting with project execution, trade coordination, and document management.
Understand code requirements
Project Execution:
Perform internal turnover meetings to identify project scope, risks, resource requirements, communications, schedule, and budgets
Collaborate with preconstruction department to ensure project bid scope is developed into design documents.
Collaborate with operations department to ensure a shared understanding of project scope and overall project execution
Drive quality control through on site project visits and punch list creation.
Qualifications and Education Requirements:
Bachelor’s degree in related Engineering field, Mechanical preferred
Related experience in the HVAC/R industry
Self-motivated with excellent time and task management skills
Ability to work within an environment with deadlines while having to multi-task with changing priorities
Ability to interact effectively with others in a team environment
Excellent leadership, organization, and communication skills
Experience in Healthcare Design a plus
NDBS is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.
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