Aecom
Trusted global infrastructure consulting firm delivering engineering, design, construction management services.
Senior Mechanical Engineer
Senior Mechanical Engineer designing HVAC and plumbing systems for large projects.
Job Highlights
About the Role
The Senior Mechanical Engineer will design heating, ventilation, air‑conditioning, and plumbing systems for large federal, commercial, and institutional projects, perform construction administration including review of shop drawings, RFIs and change orders, evaluate alternative design approaches, conduct site visits, and ensure projects meet quality, budget, and schedule criteria. They will also assist in proposal preparation, present designs to clients, review specifications, mentor staff, and serve as lead engineer on mid‑ to large‑size projects. • Design HVAC and plumbing systems for large federal, commercial, and institutional facilities. • Perform construction administration, reviewing shop drawings, RFIs, and contractor change orders. • Evaluate feasibility of alternative design approaches with senior team members. • Conduct site/field visits to assess existing conditions and equipment. • Organize and plan projects to meet quality, budget, and schedule criteria. • Prepare proposals and present designs to clients. • Mentor junior engineers and review/edit specifications. • Serve as lead engineer on mid‑ to large‑size projects.
Key Responsibilities
- ▸hvac design
- ▸plumbing design
- ▸construction admin
- ▸site visits
- ▸project planning
- ▸lead engineer
What You Bring
Candidates must hold a Bachelor’s degree in Mechanical Engineering from an ABET‑accredited program, be a licensed Professional Engineer, and have at least eight years of HVAC and plumbing design experience (ten years preferred). Preferred skills include proficiency with AutoCAD and Revit, building load calculations, energy modeling, and experience with design‑build, cost estimating, and instrumentation and controls. U.S. citizenship is required due to federal contract and security requirements, and sponsorship is not available for this position. • Hold a Bachelor’s degree in Mechanical Engineering (ABET accredited) and a Professional Engineer (PE) license. • Possess 8+ years (preferably 10+) of HVAC and plumbing design experience. • Proficient in AutoCAD, Revit, building load calculations, and energy modeling. • Experience with design‑build, cost estimating, instrumentation and controls is a plus. • Ability to work on multidisciplinary teams, manage multiple projects, and communicate designs effectively. • U.S. citizenship required due to federal contract/security requirements.
Requirements
- ▸pe license
- ▸autocad
- ▸revit
- ▸energy modeling
- ▸8+ years
- ▸us citizenship
Benefits
We are seeking a Senior Mechanical Engineer in Orange, California for a hybrid role within our Building+ Places group. The position offers the opportunity to work independently, make technical decisions based on building codes and industry standards, and mentor junior engineers while growing your career. AECOM offers a competitive salary of $135,000‑$190,000 per year and a comprehensive benefits package that may include medical, dental, vision, life and disability coverage, paid time off, flexible work options, retirement savings plans, employee stock purchase plan, and various wellness and development programs. Our culture champions growth and career ambition, providing cutting‑edge technology, award‑winning training, and a collaborative, respectful workplace where employees can make a real impact on local and global projects. • Competitive salary $135k‑$190k annually with comprehensive benefits including medical, dental, vision, retirement plans, flexible work options, and employee stock purchase plan.
Work Environment
Hybrid