Senior Mechanical Engineering-Design
Nenni & Associates
Senior Mechanical Design Engineer
We have multiple clients seeking Senior Mechanical Design Engineers in Chicago, St. Louis, Dallas-Fort Worth. We do also have other locations. Some roles are virtual, others are hybrid, others are in the office. We'll clarify your preference when we talk.
Job Duties and Responsibilities:
Experience with designing HVAC systems, chillers, boilers, air handlers, variable speed drives, motors, etc.
Strong understanding of mechanical system design, specifically regarding large HVAC systems
Ability to provide design and engineering support for central plant upgrades.
Identify and develop cost savings opportunities and capital upgrades relating to lighting, mechanical and electrical systems, energy management systems, water consuming equipment and fixtures, and the building envelope
Create formal documentation, including memorandums, reports, status reports, etc., which are routine deliverables
Education Qualifications:
Bachelor of Science in Mechanical Engineering (BSME)
Professional Certification, (PE, CEM, CEA, CLEP, etc.) strongly preferred
Experience Qualifications:
- 5+ years of relevant work experience
- Possess highly developed interpersonal, analytical, and communication skills
- Well versed in the government contracting process and/or government sales cycle
- Knowledge and experience with building simulation tools such as Visual DOE, Trane Trace, Carrier E20, eQuest, etc. are a plus
- A leading design firm is looking for an experienced engineer to oversee HVAC system designs and guide project teams. The role requires a Bachelor's or Master's in Engineering and at least 8 years of experience. Candidates should possess strong analytical skills and be...SeniorRemote job
- ...Mechanical Design Engineer Lead the mechanical design and engineering of HVAC, plumbing, fire protection, and other building systems for mission-critical facilities, including data centers, advanced manufacturing plants, and other high-reliability environments....SeniorLocal area
$125k - $180k
...Senior Mechanical Engineer BR+A Consulting Engineers maintains a total staff of over 500 employees located at our main office in Boston and branch... ...fire protection consulting engineering, technology systems design, lighting design, and building commissioning services....SeniorFull timeFor contractorsWork at office- ...Senior Mechanical Design Engineer - St. Louis, MO Apply now » Date: Jun 7, 2026 Location: St. Louis, MO, US, 63146 Leeds, AL, US, 35094 Company: Hubbell Incorporated Job Overview The Sr. Mechanical Design Engineer reports to the VP of Technology for Transmission...SeniorFlexible hours
- ...Senior Mechanical Engineer The Senior Mechanical Engineer will lead the mechanical design of projects, provide technical expertise, and ensure the successful delivery of engineering solutions for mission-critical facilities, including data centers, advanced manufacturing...SeniorFor contractorsLocal areaFlexible hours
$135k - $210k
...Description The Senior Mechanical Engineer will lead mechanical design projects and teams to create world-class designs for new projects, alterations and redevelopments within the Life Sciences industry (Pharmaceutical and Biotech). The Senior Mechanical Engineer will...SeniorFull timeFor contractorsWork experience placementWork at officeLocal area$110k - $145k
A respected engineering firm in St. Louis is seeking an experienced Mechanical Engineer to design and analyze HVAC systems. Candidates should have a Bachelor's in Mechanical Engineering, strong communication skills, and be a licensed Professional Engineer. The firm offers...Senior$117.71k - $147.08k
A leading design firm is seeking a Mechanical Engineer with over 10 years of experience to join their remote team. You will lead HVAC design projects for various sectors, providing technical guidance to the team and interfacing with clients. Ideal candidates will hold...SeniorRemote job- ...development, master planning, architecture, engineering, and construction firm that safely... ...projects. About LJC LJC Design & Engineering is a full-service architecture... ...construction. The Role We Want You For The Senior Mechanical Engineer will lead the mechanical...SeniorFor contractorsCasual workLocal areaFlexible hours
- ...Mechanical Engineer/Senior - Design Emerson Tool Company, located in St. Louis, MO, is seeking a Mechanical Engineer/Senior - Design to join our collaborative international team focused on product design and development. In this role, you will contribute to all stages...SeniorFull timeTemporary workFlexible hours
- Murphy Company in St. Louis, MO is seeking a Senior Mechanical Engineer or Designer to work in a Design-Build environment. The role entails responsibilities such as developing design criteria, interacting with clients, and ensuring compliance with building codes. Candidates...Senior
- COMPREHENSIVE MANUFACTURING SERVICE in St. Louis, MO is seeking a Mechanical Engineer to design and develop custom freight elevator systems. The role requires a Bachelor’s in Mechanical Engineering and 3+ years of design experience. Responsibilities include creating assembly...Senior
- ...development, master planning, architecture, engineering, and construction firm that safely... ...related building projects. Clayco Design and Engineering (CDE) CDE was created... ...healthcare. The Role We Want You For The Senior Mechanical Engineer will be working with in-house...SeniorFor contractorsFlexible hours
$135k - $210k
Burns & McDonnell in St. Louis seeks a Senior Mechanical Engineer to lead mechanical design projects within the Life Sciences industry. The role requires a Bachelor's in Mechanical Engineering and extensive experience in project management, compliance with codes and effective...Senior$135k - $210k
A leading engineering firm is seeking a Lead Mechanical Engineer in St. Louis, Missouri to design mechanical systems for coal and natural gas facilities. Candidates should have a Bachelor's in Mechanical Engineering and at least seven years of related experience. Responsibilities...Senior$81.77k - $134.91k
A multinational engineering firm is seeking a skilled Mechanical Engineer in St. Louis, MO, to design and develop HVAC and plumbing systems. This role involves managing complex projects that prioritize sustainability and efficiency. Candidates should possess a Bachelor'...Senior$145k - $220k
...Description Burns & McDonnell is seeking to hire a Senior Mechanical Engineer to support our Power global practice. The Senior Mechanical Engineer will lead mechanical design project teams to create world class designs for both new and existing power generation...SeniorFull timeFor contractorsWork experience placementWork at officeLocal area- A leading design firm is seeking a licensed Engineer to perform HVAC system design and project management. This role is fully remote but prefers candidates near major U.S. cities. The ideal candidate has 6+ years of experience, a relevant engineering degree, and proficiency...SeniorRemote jobFlexible hours
$117.71k - $147.08k
Cannon Design is seeking a Lead Mechanical Engineer to work remotely within the U.S. with a preference for candidates near St. Louis, MO. The role involves managing complex HVAC design projects, mentoring junior engineers, and interfacing with clients. Candidates must...SeniorRemote job- A leading construction firm in St. Louis is seeking a Senior Mechanical Engineer to provide HVAC design and quality assurance for diverse projects. Applicants should have a Bachelor’s in Mechanical Engineering and a PE License, with at least 5 years of HVAC design experience...Senior
- A global engineering firm in St. Louis is seeking a Senior Mechanical Engineer to lead the design of centrifugal water-cooled chiller systems. This role involves managing engineering projects, performing system analyses, and creating technical documentation. Candidates...SeniorFlexible hours
$135k - $210k
A leading engineering firm is seeking a Senior Mechanical Engineer in St. Louis to lead mechanical design teams for power generation projects. This role requires expertise in mechanical engineering and the ability to manage project budgets and timelines. The ideal candidate...Senior- FPC Franchise is seeking a Mechanical Engineer II to join their engineering team in St. Louis, Missouri. This role focuses on the design, testing, and analysis of advanced thermal and HVAC systems for industrial and military applications. Candidates should have a bachelor...Senior
- A leading design firm in St. Louis is seeking an experienced engineer to lead HVAC design projects. You will manage the design of ductwork and piping, conduct calculations, and prepare construction drawings using Revit. Ideal candidates will have at least 6 years of experience...Senior
- A leading mechanical contracting firm is seeking an experienced Project Manager in St. Louis, MO. The ideal candidate should have 5-10 years of relevant experience in managing mechanical contracting projects. Responsibilities include overseeing construction from planning...Senior
$113.52k - $198k
...And we're changing the industry by integrating the building design and construction process. As an ESOP, each of our... ...makes us different here: Position Overview: As a Lead and Senior Mechanical Engineer with a specialization in HVAC design at Henderson Engineers...SeniorCasual workFlexible hours- ...Job Description Senior Mechanical Engineer Company: Symbiotic Services Overview Symbiotic Services is seeking a Senior Mechanical... ...complex industrial and commercial projects within a design-build environment. This role combines technical design expertise...Senior
- ...Opportunity This individual will provide project management and mechanical (HVAC) design services on a variety of building projects. Specific... ...: A degree in Architectural or Mechanical Engineering, Professional Registration, and at least 5 or more years of...SeniorCasual workFlexible hours
- ...development, master planning, architecture, engineering, and construction firm that safely... ...purchasing, offering integrated design, and purchasing power for both... ...clients. The Role We Want You For As the Senior Project Manager (Mechanical Procurement), you will lead complex...SeniorContract workFor contractorsFlexible hours
$125k - $155k
Senior Mechanical Engineer P.E. (Group Manager) - Kansas City, MO We are a multi-disciplined engineering firm specialising in MEP Engineering, Sustainable Design, and Commissioning Services. Our projects include Commercial Buildings, Government, Educational, Healthcare...SeniorPermanent employmentFull timeFor contractorsWork at officeLocal areaFlexible hours
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