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

Mr. Mahony joined BREEN Engineering in 2008 with 25 years of experience in electrical engineering spanning a wide variety of complex project types including healthcare, commercial offices, bank buildings, retail malls, hospitality projects, and high-rise structures. Mr. Mahony has a great deal of experience on UK projects and most recently in New Zealand and Dubai. His experience in Dubai includes many high-profile projects such as 5-star hotels for Raffles Hotel and Ritz Carlton, along with numerous offices and residential towers.
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

Torrance Office

1983 West 190th Street, Suite 200
Torrance, CA 90504
T: 310.464.8404    F: 310.464.8408
  • About Us
    • Our Firm
    • Philosophy
    • News
  • Services
    • Civil
    • Structural
    • Building Systems >
      • Mechanical
      • Electrical
      • Plumbing
      • Fire Life Safety
    • Commissioning
  • PEOPLE
    • Staff
    • Department Leaders
    • Senior Management Team
  • Projects
    • Net Zero Design
    • Housing & Mixed Use >
      • Senior Living
      • Adaptive Reuse
      • Conventional
      • Affordable
      • Mixed Use
      • Net Zero Design
    • Educational Facilities >
      • k-12 Projects
    • Commercial >
      • Tenant Improvements
      • Retail
      • Hotels
      • Restaurants
    • Parks & Recreation
    • Federal & Government
    • Commissioning
  • Affiliations
    • Clients >
      • Architects & Designers
      • Developers & Contractors
      • Public & Private Institutions
    • Associations
  • Careers
  • Portal
    • Clients >
      • File Drop
    • Employees >
      • Customization
  • Contact Us