Mechanical Engineering Intern

At Horwitz, we don’t just offer jobs—we build careers. For over 100 years, we’ve been a leader in HVAC, plumbing, electrical services, delivering exceptional service while fostering a supportive and innovative workplace. Joining our team means working with passionate professionals in a culture built on safety, accountability, professionalism, motivation, curiosity, and a can-do attitude.

We’re committed to your growth with training, mentorship, and advancement opportunities. Along with competitive benefits—you’ll be part of a company that values its employees and makes a positive impact in the community. Join Horwitz and become part of a legacy of excellence and opportunity.

Internship Overview

The Mechanical Engineering Intern supports our Polaris Forge II project teams by assisting with documentation, cost tracking, technical coordination, and field support activities while learning to model our core values of Safe, Accountable, Professional, Motivated, Can Do, and Curious.

This role provides hands-on experience in mechanical systems within the construction environment. Interns will work closely with Project Managers, Project Engineers, field leaders, and trade partners to gain exposure to HVAC, plumbing, and hydronic systems, while developing a strong understanding of how engineering design translates into real-world installation.

Key Learning Opportunities & Responsibilities

These responsibilities reflect the type of work you will be exposed to and supported in throughout your internship:

Engineering & Technical Exposure

• Assist with reviewing mechanical drawings and specifications.
• Support interpretation of HVAC, hydronic, and plumbing system layouts.
• Gain exposure to ductwork, piping systems, and mechanical equipment applications.
• Learn how to navigate and reference applicable mechanical/plumbing codes and industry standards (ASHRAE, IECC, etc.).
• Assist with coordination between engineering, prefab, and field teams to ensure constructability.

Documentation & Project Support

• Assist with organizing and maintaining project documentation (RFIs, submittals, plans, specs, change orders).
• Support tracking logs and project folders to ensure information is up to date.
• Observe and assist in reviewing engineer comments on returned submittals.
• Help coordinate equipment deliveries in alignment with project schedules.
• Support closeout documentation efforts (IOMs, warranties, as-builts, etc.).

Cost & Project Coordination Exposure

• Assist in reviewing quotes and comparing equipment or material pricing.
• Support the preparation of change orders and proposals.
• Gain exposure to project financial reports, budgets, and labor projections.
• Learn how engineering decisions impact project cost and schedule.

Communication & Professional Development

• Participate in internal meetings (foreman meetings, prefab meetings, coordination meetings, etc.).
• Observe interactions with customers and general contractors.
• Build professional relationships with project teams and trade partners.
• Develop initiative, problem-solving skills, and confidence in a team-based environment.

Safety & Culture

• Observe and support safety coordination efforts in the field.
• Contribute to maintaining a positive, collaborative, and productive work environment.
• Embrace continuous learning—get better every day.

Skills & Abilities Developed

• Understanding of mechanical systems within commercial construction
• Ability to interpret engineering drawings and specifications
• Organizational and time-management skills
• Professional communication and collaboration
• Exposure to cost analysis and project coordination
• Proficiency in Microsoft Office and project management software
• Strong alignment with Horwitz’s core values

Education & Experience

• Currently pursuing a Bachelor’s degree in Mechanical Engineering or related field.
• Interest in HVAC, plumbing, hydronic systems, or mechanical construction.
• Previous internship or construction exposure is a plus but not required.
• Eagerness to learn in a hands-on, fast-paced environment.