Our Team

Executive Team

  • Darin Anderson
    Chairman & CEO
    Darin Anderson
    Chairman & CEO


    Master of Business Administration, Finance/Strategy, University of California, Riverside
    Bachelor of Science, Business Administration
    University of California, Riverside
    Executive Leadership Program, Duke University


    California CPA

    A native of California, Darin has been described as “one passionate, energetic dude.” His can-do attitude serves him not only as Chairman and CEO of Salas O’Brien, but also as a family man, athlete, and community leader. Whether he is competing in an ultra-marathon, racing bicycles in Europe, touring Thailand on a motorcycle, or coaching his kids in soccer, Darin leaves nothing in the tank. Armed with an ardent focus on the positive, a virtually unmatched abundance of determination, and a listening ear for his team's perspective, he leads through encouragement and by example. Darin has been leading large engineering and construction organizations for over 20 years as CEO, COO, and CFO. At 30, he was the CFO of Kleinfelder, a 2,500 person geotech and environmental firm.

  • Paul Silva
    President & COO
    Paul Silva
    President & COO


    Bachelor of Science Economics, Pre-Medicine,
    University of Notre Dame
    Master of Business Administration, University of Notre Dame

    Whether Paul is visiting team members at one of the many Salas O’Brien offices around the country, teaching Kung Fu, or helping to find the right solutions for a client, he exudes an energy and love for life that is inspirational and contagious. His stalwart conviction to promote integrity, ingenuity and confidence is evidenced by his active mentorship both within the company and his own community. Paul is at his best when he can wear many hats, making the role of COO in a multi-discipline company a natural fit for both his dynamic and extroverted right brain and its logical, business-minded counterpart. Away from the office, Paul enjoys travelling with his wife and two daughters, and running with the family dogs.

  • John Salas
    Managing Principal
    John Salas
    Managing Principal


    Bachelor of Science, Mechanical Engineering San Jose State University, 1982


    California #M02055

    Professional Affiliations

    LEED Accredited Professional
    Certified Energy Manager (CEM)
    Green Building Engineer (GBE)
    Certified Building Commissioning Professional (CBCP)

    John Salas is one of the firm’s Founders and Principals and has been with the firm since 1979. Over the last 35 years John has developed an expertise in project & construction management, mechanical, controls, and plumbing design systems for commercial, institutional, residential, industrial, educational, and public sector projects. John has been involved in complex central plant planning and design, HVAC system build-outs, and control systems integration. John has managed complete renovation/modernization projects from the study phase through design and construction. His experience includes extensive commissioning of energy management systems that is becoming more and more important to both our clients and for the sustainable future.

  • Arnold Kraakmo
    Managing Principal
    Arnold Kraakmo
    Managing Principal


    Bachelor of Architecture, University of Washington


    Washington 1994
    Montana 2012
    California 2015

    Professional Affiliations

    American Institute of Architects – AIA
    Construction Specification Institute – CSI, CDT
    Roof Consultants Institute – RCI
    ATC – 20 Certification for Post- Earthquake Safety Evaluation of Buildings

    Arnold was drawn to the field of architecture by a fascination with the technical side of how things work. His natural aptitude for problem solving coupled with his drive and ambition to reach the level of partner set him apart as a young professional, but it was his authenticity and ability to foster relationships that propelled him to his current role of Managing Principal at Salas O’Brien. Arnold makes a great effort to create lasting personal connections with clients, vendors, and staff, and he is a champion for the unification and prosperity of his team. As a trustee and activist at his church, Arnold’s strength in leadership extends far beyond the office walls.

  • Brad Kalmans
    Managing Principal
    Brad Kalmans
    Managing Principal


    Bachelor of Science, Electrical Engineering, Washington University


    State of Texas #80219

    Also registered in AL, AZ, AR, CA, CO, CT, DE,
    FL, GA, ID, IL, IN, IA, KS, KT, ME, MD, MS, MN,
    MT, NE, NV, NH, NM, NY, NC, ND, OK, OR, PA,
    RI, SC, SD, TN, UT, VT, VA, WA, WV, WI

    Raised in a family of engineers, Brad leveraged his innate aptitude for science and math to excel in the field and become a Principal at Salas O’Brien at only 33 years young. His sincerity and easy going nature set clients at ease, while his design and technical skills give his numerous and varied projects an unparalleled level of quality. Actively involved in his community, Brad enjoys volunteering in many local charity and educational programs. Determined to live life to its fullest, Brad has completed 21 marathons and enjoys trotting the globe with his wife and two sons. He is also a dedicated Houston sports fan in regular attendance at all of the Rockets and Texans games.

  • Stan Everett
    Managing Principal
    Stan Everett
    Managing Principal


    Georgia Institute of Technology
    Bachelor of Mechanical Engineering Co-operative plan / 1975
    Georgia State University
    Master of Business Administration / 1986


    AABC Associated Commissioning Group (ACG) CxA, Certified Commissioning Agent
    Engineering Expert Witness (EXW)
    LEED Accredited Professional


    Professional Registered Engineer in the following states:
    AL, AR, CA, CO, CT, FL, GA, IL, IN, IA, KS, KY, MD, MA, MI,
    MS, MO, NV, NJ, NY, NC, OH, OK, PA, PR, SC, TN, TX, VA

    In addition to his responsibilities as a Managing Principal, Stan Everett managing all areas of his projects including design contract management, quality assurance and delivery of services. One of his most important roles at Salas O’Brien is functioning as a primary liaison for clients. During his 40+ years of experience, Stan has worked on a wide variety of unique project types, including co-generation, geo-thermal, central energy plants, laboratory air pressure/circulation, and critical load applications such as data and telecommunication centers.



Leadership Team

  • Eric Anest
    Marketing Director
  • Stephen Boie
    Principal, Senior Mechanical Engineer
  • David Bonaventure
    Principal, Senior Mechanical Engineer
  • Jamie Bonner
    AVP, Senior Marketing Manager
  • Tim Brawner
    Principal, Senior Electrical Engineer
  • Bryan Brown
    AVP, Mechanical Engineer
  • Tim Campbell
    AVP, Senior Fire Protection Engineer
  • Dan Clifford
    Principal, Senior Mechanical Engineer
  • Scott Coward
    AVP, Senior Project Manager
  • Chris Cox
    SVP, Senior Electrical Engineer
  • Carl Crizer
    VP, Mechanical Engineer
  • Karoline Derse
    AVP, Architect
  • Douglas Diel
    Principal, Senior Architect
  • Tom Doyle
    AVP, Electrical & Controls
  • Tom Evans
    Principal, Senior Electrical Engineer
  • Stuart Everett
    Dir. of Operations & Bus. Development
  • John Floren
    VP, Senior Electrical Engineer
  • Kim Gaskey
    SVP, Senior Plumbing Engineer
  • Keith Gassman
    Principal, Senior Electrical Engineer
  • Tim Gilbert
    Principal, Senior Mechanical Engineer
  • Roy Goodman
    Founder and Principal, Senior Mechanical Engineer
  • Jeffry Gosal
    Principal, Senior Electrical Engineer
  • Ronnie Hilton
    AVP, Electrical Designer
  • Sean Holder
    SVP, Senior Mechanical Engineer
  • Toby Hunt
    Principal, Senior Mechanical Engineer
  • Melissa Johnson
    AVP, Leadership & Change Management
  • Randy Jones
    Principal, Senior Mechanical Engineer
  • Thomas Jun
    AVP, Senior Electrical Engineer
  • Mel Kalmans
    Principal, Senior Electrical Engineer
  • Hugh King
    AVP, Electrical Engineer
  • Leslie Locsin
    AVP, Senior Mechanical Engineer
  • Danny Lundstrom
    Principal, Senior Electrical Engineer
  • Karl Marshall
    Principal, Senior Mechanical Engineer
  • Israel Moreno
    AVP, Project Manager
  • Bi Nguyen
    SVP, CAD
  • Ken Noack
    VP, Senior Project Manager
  • Dan O’Brien
    Founder, Senior Mechanical Engineer
  • Alan Penn
    SVP, Construction Administration
  • Mike Prusty
    Corporate Controller
  • Michael Rabieh
    SVP, Information Systems & Technology
  • Michael Rickelman
    AVP, Project Manager
  • Ed Ries
    Principal, Senior Mechanical Engineer
  • Brenda Ross
    VP, Senior Architect
  • Carl Salas
    Founder and Principal, Senior Mechanical Engineer
  • Daniel Shratter
    AVP, Senior Mechanical Engineer
  • John Siefken
    Principal, Senior Electrical Engineer
  • Dan Stephens
    AVP, Project Manager
  • Michael Stephens
    AVP, Project Manager
  • John Thomson
    Principal, Senior Mechanical Engineer
  • Jacob Truax
    AVP, Electrical Engineer
  • Nancy Wilcox
    AVP, Interior Designer
  • Donald Young
    SVP, Senior Construction Manager
  • Jeffrey Zabransky
    SVP, Senior Electrical Engineer
  • Robert Zendejas Jr.
    Principal, Senior Electrical Engineer