Mechanical Engineer-HVAC STV's Buildings Group is seeking a Mechanical (HVAC) Engineer for our Buildings group in Philadelphia and Douglassville, Pennsylvania to support the design and delivery of mechanical systems across a diverse portfolio of buildings projects, including commercial, institutional, healthcare, education, and public-sector facilities. This role offers the opportunity to work within a collaborative, multidisciplinary environment delivering high-performance, sustainable building systems from concept through construction. Key Responsibilities - Design HVAC systems for buildings, including air distribution, hydronic systems, and central plant systems. - Perform load calculations, equipment sizing, and system layout development. - Prepare and coordinate mechanical drawings, specifications, and technical documentation. - Collaborate with architectural, structural, electrical, and plumbing teams. - Support all phases of project delivery from design through construction administration. - Participate in BIM coordination using Revit. - Conduct site visits, assessments, and inspections. - Review shop drawings, respond to RFIs, and support field coordination. - Ensure compliance with ASHRAE, IBC, IECC, and local Pennsylvania codes. - Support QA/QC reviews to improve document quality and coordination. - Assist with energy modeling and sustainable design strategies. Required Qualifications - Bachelor's degree in Mechanical Engineering or related discipline is preferred, however, a non-degreed candidate with equivalent experience will be considered. - 5-8 years of experience in HVAC design within buildings/vertical construction. - FE certification preferred; PE license preferred or in progress. - Strong understanding of HVAC systems and construction documentation. - Proficiency in Revit, AutoCAD, and HVAC design tools (HAP, Trace or similar). - Knowledge of ASHRAE standards, energy codes, and building codes. - Strong communication, coordination, and problem-solving skills. - Ability to manage multiple projects and priorities. Preferred Experience & Skills - Experience with institutional, healthcare, higher education, or commercial buildings projects. - Familiarity with Design-Build and fast-track delivery. - Experience with energy modeling, sustainability, and decarbonization. - Knowledge of BIM workflows and Revit coordination environments. - LEED accreditation is a plus. Compensation Range: $99,431.03 - $113,635.46 STV offers the following benefits • Health insurance, including an option with a Health Savings Account • Dental insurance • Vision insurance • Flexible Spending Accounts (Healthcare, Dependent Care and Transit and Parking where applicable) • Disability insurance • Life Insurance and Accidental Death & Dismemberment • 401(k) Plan • Retirement Counseling • Employee Assistance Program • Paid Time Off (starting at 16 days) • Paid Holidays (9 days) • Back-Up Dependent Care (up to 10 days per year) • Parental Leave (up to 80 hours) • Continuing Education Program • Professional Licensure and Society Memberships STV is committed to paying all of its employees in a fair, equitable, and transparent manner. The listed pay range is STV's good-faith salary estimate for this position. Please note that the final salary offered for this position may be outside of this published range based on many factors, including but not limited to geography, education, experience, and/or certifications.