Senior Mechanical Facilities Design Engineer

Senior Mechanical Facilities Design Engineer Merrick & Company paid time off, 401(k) United States, South Carolina, Aiken 137 Old Market Street (Show on map) May 06, 2026 OVERVIEW Merrick & Company's Nuclear Services & Technology team provides full service nuclear design solutions to the federal government (DOE, NNSA, and NIST), nuclear research, and nuclear medicine. Merrick is seeking a highly motivated, team oriented Mechanical Engineer to support our operations in our Aiken, SC or Oak Ridge, TN office.

WHAT YOU'LL DO

The successful candidate will design HVAC and Plumbing/Piping system for a variety of facility projects. Tasks include developing design calculations, process flow diagrams, sequences of operation, equipment selection and layout, ductwork and piping sizing and layout, support of project proposals, interdisciplinary coordination and participating of QA/QC process. Part time efforts will be devoted to site inspection and construction administration. This position is primarily a leadership role and will be part of a design team environment. Must be willing to work in a design team environment, including directing the work of junior engineers and designers, and delegating work as required as well as take design direction from senior-level engineers Interdisciplinary coordination Develop calculations, flow diagrams, and specifications Size and layout ductwork, hydronic and plumbing piping systems Lead QA/QC processes Proficient with codes, standards and guidelines

REQUIRED QUALIFICATIONS

Bachelor's degree (B. S.) in Mechanical Engineering from an A.B.E.T. accredited program. A minimum of twelve (12) years related experience. Candidate must have their PE license. Must understand the importance of Business Development, project management for A-E firms, managing to fee and demonstrate skills in a multi-discipline teams. Position requires the ability to manage other engineers and designers. Experience interfacing with client contacts. Strong experience with thermal load calculation and energy modeling for mechanical systems. Strong experience in calculating and sizing of mechanical equipment including AHUs, fans and pumps. Strong experience in sizing and laying out ductwork and hydronic piping systems. #LI-Hybrid

DESIRED QUALIFICATIONS

To perform the job successfully, an individual should demonstrate the following competencies: 1. Analytical

• Synthesizes complex or diverse information; Collects and researches data; Uses intuition and experience to complement data; Designs work flows and procedures. 2. Design
• Generates creative solutions; Translates concepts and information into design; Uses feedback to modify designs. Demonstrates attention to detail. 3. Problem Solving
• Identifies and resolves problems in a timely manner; Gathers and analyzes information skillfully; Develops alternative solutions; Works well in group problem solving situations; 4. Technical Skills
• Assesses own strengths and weaknesses; Pursues training and development opportunities; Strives to continuously build knowledge and skills; Shares expertise with others. 5. Team Work
• Balances team and individual responsibilities. 6. Written Communication
• Writes clearly and informatively; Edits work for spelling and grammar; Presents numerical data effectively; Able to read and interpret written information. 7. Verbal Communication
• Able to clearly communicate to others at all levels within the organization. 8. Adaptability
• Adapts to changes in the work environment and meets expectations for attendance and punctuality. PERKS Employee Owned
• all eligible U.

S. employees have an Employee Stock Ownership Account. Robust Employee Referral Program. Annual performance and compensation reviews. Professional Training and Development. Employee Recognition Awards. Peer Mentor Program And Much More!

ADDITIONAL INFORMATION

Apply online only. No e-mail, hard copy or third-party resumes accepted. At Merrick, every resume is carefully reviewed by our team of experienced human recruiters-never by AI. We are committed to a fully human-centered hiring process, ensuring each candidate receives thoughtful, personalized attention at every stage. Merrick & Company offers a competitive compensation and benefits package which includes health insurance, dental and vision coverage, 401(k), and paid time off (PTO). Merrick is an Equal Opportunity Employer, including disability/vets. Employment with Merrick is contingent upon completion of a pre-employment background check, MVR check, and drug screen.