Senior HVAC Site Mechanical Engineer

•

Company and Position Summary:

Rensair is a high-growth climate technology company transforming commercial buildings through sustainable indoor air quality (IAQ) and HVAC optimization. With offices in Philadelphia, Pennsylvania; Brooklyn, New York; London, UK; and Copenhagen, Denmark, Rensair helps some of the world's largest organizations reduce HVAC energy consumption by more than 40% while improving indoor air quality. This is a unique opportunity for an experienced HVAC Mechanical Engineer to play a key role in expanding Rensair's U.S. business by serving as a trusted technical advisor to customers nationwide. Reporting directly to the U.S. CEO, the Senior HVAC Site Mechanical Engineer will lead complex HVAC system evaluations, collaborate with Rensair's international R&D team, and deliver innovative building optimization solutions for some of the world's largest commercial building owners. This position is ideal for an experienced Mechanical Engineer with 5+ years of experience who can effectively provide technical leadership responsibilities while remaining hands-on with engineering, customer engagement, and field work. The ideal candidate will be based in the Philadelphia region, with the ability to work in a hybrid capacity from Rensair's Philadelphia office with convenient access to the airport. This role requires approximately 50% travel throughout the United States to support customer engagements. Senior HVAC Site Mechanical Engineer

•

Responsibilities:

Lead detailed technical assessments and engineering evaluations of commercial HVAC and ventilation systems to identify opportunities for improved indoor air quality, energy efficiency, and system optimization Collect, document, and analyze HVAC system performance data through field measurements including airflow, pressure, power consumption, ventilation effectiveness, and equipment performance Serve as the primary technical advisor for customers throughout the project lifecycle, including solution development, product selection, implementation, and identify expansion opportunities Lead technical site investigations, customer meetings, and engineering discussions for new and existing customers Collaborate with Rensair's global R&D and engineering teams by providing field insights and customer feedback to develop customized solutions and improve future products Prepare technical reports, engineering recommendations, presentations, and documentation for customers and internal stakeholders Partner with the commercial team to support technical evaluations, proposal development, RFP responses, and customer solution strategies Stay current with HVAC technologies, ASHRAE standards, building automation systems, energy efficiency initiatives, indoor air quality regulations, and commercial building trends Travel to customer sites throughout the United States (approximately 50%) Senior HVAC Site Mechanical Engineer

•

Qualifications:

Bachelor of Science degree in Mechanical Engineering or related engineering discipline required 5+ years of experience in commercial HVAC engineering, mechanical consulting, MEP engineering, commissioning, building systems, facilities engineering, energy engineering, HVAC controls, or related technical solutions Strong knowledge of commercial HVAC systems including air handling units (AHUs), rooftop units (RTUs), chilled water systems, ventilation systems, VAV systems, HVAC controls, and building automation systems Experience evaluating HVAC performance, troubleshooting mechanical systems, commissioning projects, or implementing energy optimization initiatives Strong analytical, problem-solving, and technical decision-making skills Demonstrated ability to lead technical projects, influence technical decisions, and collaborate effectively with customers, cross-functional teams, and executive stakeholders Excellent written and verbal communication skills with the ability to present technical concepts and engineering recommendations to customers, consultants, contractors, and leadership teams Strong analytical, problem-solving, and technical decision-making skills Ability to work independently in a fast-paced entrepreneurial environment while collaborating effectively with engineering, R&D, and commercial teams Ability to travel approximately 50% Senior HVAC Site Mechanical Engineer

•

Compensation, Benefits & Growth:

Competitive base salary with performance-based incentive compensation offering On-Target Earnings (OTE) up to $200,000 Equity offering available upon hire Major Medical, Dental, and Vision

•comprehensive healthcare reimbursement 24 days of paid time off plus company holidays Direct exposure to executive leadership with the opportunity to help shape the future of the U.S. engineering organization Opportunity for significant career advancement as Rensair continues to expand throughout North America Entrepreneurial culture where innovation, collaboration, and initiative are recognized and rewarded Work with industry leading technology that is helping commercial buildings reduce carbon emissions, improve indoor air quality, and achieve sustainability goals

Pay:

$175,000.00

•$200,000.00 per year

Benefits:

Dental insurance Health insurance Paid time off Vision insurance

Experience:

HVAC Site Engineering:

1 year (Preferred) Willingness to travel: 50% (Required)

Work Location:

Hybrid remote in Philadelphia, PA 19107