Des Mahony, P.E., LEED AP
Vice President / Director of Building Systems

Des joined BREEN Engineering in 2008 and has over 30 years of experience in consulting engineering for a variety of complex project types including residential, healthcare, commercial office, retail, hospitality, restaurant, industrial, federal government facilities, education and high-rise structures. Most recent experience includes numerous residential projects in and around southern California, especially LEED and Green Point Rated apartments for low income, affordable and market rate living. Other residential projects include student accommodation, high-end condominiums, accessory dwelling units and single family homes. 

Des leads the MEP department at BREEN Engineering and is the licensed electrical engineer for all of the projects that pass through our doors. He has a hands-on approach, leading projects from the kick-off meeting, through to final handover. He mentors, trains and encourages staff at all levels and is responsible for the timely execution of the MEP projects in the office.

Des also has extensive international experience, including projects in the UK, New Zealand, Australia, Abu Dhabi and Dubai.​

Professional Registration​

• Electrical Engineer, State of California, #E020642
• LEED AP

Education

• Bachelor of Engineering (Honors), Energy Engineering
  South Bank University, London
• BSc., Building Services Engineering
  South Bank University, London
• BTEC HNC/CED Building Services Engineering
  City of Westminster College, London

Experience

• BREEN Engineering Inc., Torrance, California 
  ​Vice President, 2017 to Present
  Director of Building Systems, 2010 to Present
  ​Director of ​Electrical Engineering: 2008 to Present
• Mahony Consulting Ltd., Wellington, New Zealand
  Owner/Director: 2006-2008
• Hyder Consulting Middle East Ltd., Dubai
  Design Manager- Electrical: 2004-2006
• Beca, Wellington, New Zealand
  Senior Design Engineer: 2001-2004
• Donald Smith Seymor & Rooley, London, England
  Associate: 1988-2001
• William Steward & Co Ltd., London, England
  Electrical Contractor: 1983-1988