Principal MEP Engineer

Job Description

AECOM is seeking a motivated and technically capable Senior HVAC Engineer to join our MEP team. This is a hands-on engineering role for a professional who works with a high degree of autonomy on both standalone and larger collaborative projects, delivering quality HVAC designs, and contributing to a culture of technical excellence.

In this role, you will independently execute primary design elements for HVAC systems, apply your technical expertise to resolve engineering challenges, and support senior engineers on complex assignments. You will also begin to take on direct client interactions and play an active role in guiding junior team members, making this an excellent opportunity to grow toward a principal-level career path

Responsibilities:

Design & Technical Execution

• Independently perform HVAC design tasks including load calculations, equipment selection, ductwork and piping layouts, and system sizing for a range of building types and project scales.
• Gather, correlate, and interpret engineering data using established procedures to develop well-founded design solutions.
• Prepare primary design elements for HVAC components of PS&E packages under general guidance from senior or principal engineers.
• Propose and implement modifications to standard procedures when encountering novel design challenges, drawing on prior project experience.
• Identify discrepancies in design results, investigate root causes, and recommend corrective actions.
• Prepare technical specification sections for HVAC systems and equipment, ensuring compliance with applicable codes and standards.
• Develop HVAC portions of construction cost estimates and contribute to technical effort assessments.
• Perform a thorough self-check of all work products prior to submission to senior reviewers or clients.
• Carry out technical quality reviews of calculations and drawings, documenting findings in the project record in accordance with company policies and procedures.
• Proactively identify improvement opportunities in existing HVAC design processes and advocate for their implementation.
• Maintain accurate and organized project documentation throughout the design lifecycle.
• Coordinate with structural, electrical, plumbing, and fire protection disciplines to ensure integrated and conflict-free HVAC designs.
• Begin to interact directly with clients to gather project information, clarify scope requirements, and present draft deliverables.
• Exchange technical information on sensitive matters with internal and external stakeholders, working to build consensus across teams.
• Assist with the preparation of technical proposals and contribute to project pursuit activities.
• Provide day-to-day guidance and technical training to entry-level and junior engineers, supporting their professional development.
• Contribute to internal knowledge sharing through participation in team reviews, technical discussions, and lessons-learned sessions.
• Actively participate in professional or industry organizations (e.g., ASHRAE local chapters) as a committee member.
• Pursue continuing education, relevant technical certifications, and professional licensure to maintain and expand expertise.

Qualifications

Qualifications & Experience:

Required:

• Bachelor's degree in Mechanical Engineering or a closely related engineering discipline.
• Minimum 5–7 years of experience in HVAC engineering design, with demonstrated ability to independently execute primary design elements.
• Solid knowledge of HVAC systems including central air handling units, VAV systems, chilled water and heating hot water distribution, exhaust and ventilation systems, and split/VRF systems.
• Proficiency in HVAC load calculation and design tools (e.g., Trane TRACE, HAP, eQUEST, or equivalent).
• Good working knowledge of applicable codes and standards including ASHRAE 62.1, 90.1, 55, IMC, and local energy and building codes.
• Proven ability to manage your own workload, meet deadlines, and deliver technical work within agreed budget and schedule with minimal supervision.
• Strong analytical and problem-solving skills, with a track record of identifying design discrepancies and proposing effective solutions.
• Effective written and verbal communication skills, with the ability to exchange technical information clearly with colleagues and clients

Preferred:

• Experience with specialist HVAC applications such as data centers, healthcare, pharmaceutical, or laboratory environments.
• Familiarity with Building Automation Systems (BAS) and DDC controls, including integration and sequence-of-operations documentation.
• Exposure to Building Information Modelling (BIM) tools, particularly Revit MEP, with experience contributing to federated models.
• LEED Green Associate or LEED AP credential, with practical exposure to energy-efficient design strategies.
• Basic familiarity with commissioning processes and coordination requirements during construction administration.
• Experience using design software with energy simulation or CFD capabilities for system optimization.
• Prior involvement in writing or reviewing sections of technical reports or project proposals.
• Exposure to design-build project environments or integrated project delivery methodologies.
• Working towards or holding a Professional Engineer (PE) license or equivalent registered engineering credential; active pursuit of licensure is expected at this level.

Additional Information

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.