Mechanical Designer III

ENFRA LLC; Tempe (AZ); On-site; USD 77,000 - 103,000; Full time

Job summary

ENFRA LLC in Tempe, AZ is seeking a Mechanical Designer III to lead significant portions of HVAC/mechanical design on hospital and college campus projects. You will independently develop design solutions, coordinate with internal disciplines, vendors, and project leadership, and mentor junior designers.

The role requires strong Revit/BIM skills, experience with building systems, and the ability to manage schedules, deliverables, and quality.

Qualifications

• Associates degree or higher in architectural/ mechanical engineering, or 2-4 years of design experience in lieu of degree.
• 5+ years of experience with building construction, especially mechanical, electrical, plumbing, automatic temperature control systems, and/or testing, adjusting, and balancing.
• Strong working knowledge of HVAC systems for commercial, institutional, healthcare, campus, or similar building types.
• Ability to mentor Designer I and II staff.

Responsibilities

• Lead the design and documentation of assigned HVAC/mechanical systems, areas, or project packages.
• Develop system layouts, equipment selections, mechanical room layouts, ductwork and piping distribution, details, schedules, and controls coordination.
• Perform and review HVAC load calculations, ventilation calculations, duct sizing, pipe sizing, equipment sizing, and energy-code inputs.
• Develop basis system configurations and control schemes with emphasis on long-term energy savings.
• Occasionally, lead the layout of domestic water, sanitary sewer, storm water, medical gas, laboratory gas, and fire suppression piping and equipment.

Skills

HVAC design

Coordination

Communication

Mentoring

Education

Associates degree or higher in architectural/ mechanical engineering

Engineer-in-Training certification

Tools

Revit

Job description

About Us

At ENFRA, we blend a rich history with a forward-looking vision. With over 100 years of experience, we are a pillar of stability in the energy infrastructure industry and a leader in innovative energy solutions. Our commitment to leveraging emerging technologies ensures that we remain at the forefront of the Energy-as-a-Service sector.

We believe in growth—not just for our business, but for our people. Our team members have the opportunity to advance their careers in a supportive environment that values continuous learning and development. We embrace innovation and encourage creative problem solving to tackle the energy infrastructure and energy challenges of tomorrow.

Inclusion is at the heart of our culture. We strive to create a workplace where every voice is heard and valued, fostering a collaborative environment where diverse perspectives drive our success.

Join us to be part of a legacy of excellence and a future of groundbreaking advancements. At ENFRA, stability, innovation, and growth are more than just values—they are the pillars of our continued success.

Overview

The Mechanical Designer III is an experienced HVAC/mechanical design professional capable of leading significant portions of a project’s mechanical design and documentation effort on hospital and college campuses. This role requires solid technical judgment, strong production capability, and the ability to coordinate directly with internal disciplines, vendors, contractors, and project leadership.

The Mechanical Designer III is expected to independently develop design solutions for assigned systems, support project planning, mentor junior staff, and contribute meaningfully to design quality, coordination, and constructability.

The Mechanical Designer III works with moderate independence under the direction of a Senior Designer, Professional Engineer, Design Manager, or Design Director and may provide day-to-day guidance to junior designers.

Responsibilities

• Typical responsibilities may include:
• Lead the design and documentation of assigned HVAC/mechanical systems, areas, or project packages.
• Develop system layouts, equipment selections, mechanical room layouts, ductwork and piping distribution, details, schedules, and controls coordination.
• Perform and review HVAC load calculations, ventilation calculations, duct sizing, pipe sizing, equipment sizing, and energy-code inputs.
• Develop basis system configurations and control schemes with emphasis on long-term energy savings.
• Occasionally, lead the layout of the following systems: domestic water, sanitary sewer, storm water, medical gas, laboratory gas, and fire suppression piping and equipment.
• Coordinate mechanical design with architecture, structure, electrical, plumbing, fire protection, controls, and construction teams.
• Participate actively in BIM coordination, clash resolution, design workshops, and interdisciplinary coordination meetings. Conduct and direct the field operation of 3D laser scanning equipment.
• Review junior staff work for drafting quality, model organization, coordination, and basic technical accuracy.
• Support development of specifications, narratives, opinions of probable cost, phasing plans, and design deliverables.
• Assist with construction administration, including review of submittals, RFIs, field reports, punch lists, issue resolution, and other project / construction ream support as needed.
• Identify design, coordination, constructability, and schedule risks and elevate them appropriately.
• Support adherence to client standards, regulatory requirements, and internal quality-control procedures.

Qualifications

Required Education, Experience, and Qualifications

• Associates degree or higher in architectural engineering, mechanical engineering, or related field, or 2-4 years of design experience in lieu of degree
• 5+ years of experience with building construction, especially mechanical, electrical, plumbing, automatic temperature control systems, and/or testing, adjusting, and balancing.
• Strong working knowledge of HVAC systems for commercial, institutional, healthcare, campus, or similar building types.
• Ability to develop coordinated design documents with limited supervision.
• Familiarity with applicable mechanical codes, energy codes, ASHRAE standards, and industry best practices.
• Ability to mentor Designer I and II staff.
• Strong Revit/BIM skills, including model coordination and documentation management.
• Ability to communicate directly and professionally with project team members.
• Developing ability to understand project budgets, schedules, deliverables, and staffing needs.

Preferred Education, Experience, and Qualifications

• Engineer-in-Training certification

Travel Requirements

• 10-25% of time will be spent traveling to job site(s)/office location.

Physical Activities

• Climbing stairs.
• Moving self in different positions to accomplish tasks in various environments including tight and confined spaces
• Remaining in a stationary position, often standing or sitting for prolonged periods
• Repeating motions that may include the wrists, hands and/or fingers
• Moving about to accomplish tasks or moving from one worksite to another

Environmental Conditions

• Outdoor elements such as precipitation and wind
• Noisy environment
• Quiet environment
• Small and/or enclosed spaces

Physical Demands

• Light work that includes adjusting and/or moving objects up to 20 pounds

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Pay Range

USD $36.95 - USD $49.34 /Hr.

ENFRA is proud to be an Equal Opportunity Employer of Minorities, Women, Protected Veterans, and Individuals with Disabilities, and participates in the e-Verify program. All qualified applicants will receive consideration for employment without regard to race, creed, color, religion, sex, age, sexual orientation, gender identity, national origin, veteran status, disability, or any other classification protected by law.