Mechanical Engineer PE I

ENFRA Solutions; Philadelphia (Philadelphia County); On-site; USD 102,000 - 153,000; Full time

Job summary

ENFRA is a leading engineering firm delivering Energy‑as‑a‑Service solutions to modernize infrastructure for hospitals and universities. The Mechanical Professional Engineer I applies fundamentals to design, analyze, and support systems across campuses, preparing calculations, drawings, and specifications while coordinating with multidisciplinary teams.

The role requires a bachelor’s degree in mechanical or architectural engineering, a PE license, 5+ years of design experience, and a strong

Qualifications

• Bachelor’s degree in architectural engineering, mechanical engineering, or related field.
• 5+ years of design experience.
• Professional Engineer (PE) license.
• Working knowledge of mechanical engineering systems and design principles.
• Strong analytical, problem‑solving, and mathematical skills.
• Proficiency in engineering software and tools.
• Effective verbal and written communication skills.
• Detail‑oriented with ability to manage multiple tasks.

Responsibilities

• Signing and sealing engineering documents, as applicable.
• Analysis, design, and evaluation of mechanical systems (HVAC, hydronic, energy systems).
• Prepare calculations, drawings, and specifications under established standards.
• Assist with detailed system configurations and control schemes with focus on energy savings.
• Conduct field investigations and support site visits; coordinate 3D laser scanning.
• Assist in project execution; coordinate with internal teams.
• Work under general supervision and escalate complex problems to senior staff.

Skills

Analytical skills

Problem-solving

Mathematical skills

Communication skills

Engineering software

Education

Bachelor’s degree in architectural/mechanical engineering

Professional Engineer (PE) license

Tools

Engineering tools

Job description

About Us

At ENFRA, we don’t just design—we deliver outcomes that transform how energy infrastructure is financed, built, and sustained.

As the leader in Energy‑as‑a‑Service (EaaS), we integrate engineering, design, construction, financing, and long‑term operations into a single, accountable team—removing traditional barriers between design and execution. This means our engineers don’t work in silos or simply hand off drawings; they help shape full‑lifecycle solutions that reduce costs, improve performance, and create measurable, lasting value for our clients.

Our approach goes beyond the traditional models. We combine real‑time collaboration with constructors, operators, and energy specialists to design systems that are not only technically sound—but constructible, operable, and optimized for lifecycle performance. Every project is grounded in accountability, data, and a commitment to delivering guaranteed outcomes—not just design intent.

Through our EaaS model, we empower clients to modernize infrastructure without upfront capital, while achieving guaranteed savings, improved resiliency, and long‑term sustainability. Our teams play a direct role in accelerating the energy transition—delivering solutions that decarbonize facilities, enhance operations, and future‑proof critical infrastructure.

At ENFRA, you’ll join a multidisciplinary team that spans the full project lifecycle—from concept through optimization—giving you the opportunity to see your work realized, measured, and continuously improved. We value practical innovation, cross‑disciplinary thinking, and engineers who want to make a real‑world impact beyond the drawing set.

If you’re looking to move beyond traditional design and be part of a model that is reshaping the industry—ENFRA is where engineering meets ownership, accountability, and impact.

Overview

The Mechanical Professional Engineer I (PE I) applies fundamental engineering principles to design, analyze, and support mechanical systems for energy and infrastructure projects across hospital and college campuses. This includes developing code‑compliant, constructible designs for HVAC, hydronic, thermal plant, and energy systems within defined project scopes. The PE I collaborates with multidisciplinary teams to coordinate designs with existing facilities, supports permitting and procurement efforts, and responds to field conditions. Responsibilities include preparing calculations, drawings, and specifications, maintaining design documentation, and contributing to systems that meet performance, reliability, and energy efficiency objectives consistent with ENFRA’s design‑build delivery model.

Responsibilities

• Responsible for signing and sealing engineering documents, as applicable.
• Performs analysis, design, and evaluation of mechanical systems (HVAC, hydronic, energy systems, etc.).
• Prepares calculations, drawings, and specifications under established standards.
• Assists with the creations of detailed system configurations and control schemes with emphasis on long‑term energy savings.
• Conducts field investigations and supports site visits. Coordinates and plans 3D laser scanning effort.
• Assists in project execution, including coordination with internal teams.
• Applies engineering techniques within defined assignments.
• Performs work under general supervision.
• Handles moderately complex issues; escalates more complex problems to senior staff.
• Begins developing client interaction skills in supported setting.

Required Education, Experience, and Qualifications

• Bachelor’s degree in architectural engineering, mechanical engineering, or related field
• 5+ years of design experience
• Professional Engineer (PE) License
• Working knowledge of mechanical engineering systems and design principles
• Strong analytical, problem‑solving, and mathematical skills
• Proficiency in engineering software and tools
• Effective verbal and written communication skills
• Detail‑oriented with ability to manage multiple tasks

Preferred Education, Experience, and Qualifications

• Experience in energy infrastructure, ESCO, or EaaS projects.

Travel Requirements

• 10-25% of time will be spent traveling to job siteS.

Physical/Work Environment Requirements

• Prolonged periods of office work sitting at a desk and working on a computer.
• Ascending and descending stairs, ladders, ramps, and possibly scaffolding.
• Occasionally completed field survey in loud, peak/low temperatures, and/or elevated locations.
• Repeating motions that may include the wrists, hands and/or fingers.
• Field survey, including traveling to job sites, to document existing conditions and observe construction progress.
• Light work that includes adjusting and/or moving objects up to 20 pounds.

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Pay Range

USD $101,610.00 - USD $152,662.00 /Yr.

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.