Gregory L. Edwards

    Gregory holds an Associate’s Degree in Engineering Technology with Mechanical Option from Chattanooga State Technical Community College, and is a B.S.M.E. Candidate, University of Tennessee at Chattanooga. He has design engineering experience involving construction and renovation projects; specializing in Heating, Ventilation, and Air Conditioning Systems. He holds certificates in the Carrier HVAC Design Technical Development Program, TVA Geothermal Heat Pump Program, and AutoCAD Training Program Certificate. Gregory has been with Campbell & Associates, Inc. since 1987.


  • Brian Lynn

    Brian P. Lynn

    Mr. Lynn holds a Bachelor of Science Degree in Electrical Engineering from The University of Toledo, Ohio.

    Brian has experience in electrical design and construction documents since 2002.  Responsibilities include client and owner coordination, electrical design for life safety, security, fire alarm, and telecommunications systems and power distribution.  Project experience includes electrical systems for commercial and institutional facilities.

    Brian joined Campbell & Associates, Inc. in December 2013.

  • Robert Smith, Campbell & Associates, Inc.

    Robert K. Smith

    Robby is an Electrical Designer for Campbell & Associates, Inc. He holds a certificate in Technical Drafting from Chattanooga State Technical Community College. He joined Campbell & Associates, Inc. in 1987. His responsibilities include lighting, power and fire alarm design for various commercial, hospital, educational and retail projects. Robby has experience in performing engineering calculations, project management, field investigation and coordination, inspections, preparation of CAD drawings & table plans and insurance of code compliance.

  • ROSA

    Rosa I. Graham

    Rosa attended Hillsborough Community College of Tampa, Florida where she studied Electrical Design. She also attended South Texas Community College where she studied and became proficient in Computer Aided Drafting and Design. Rosa joined Campbell & Associates, Inc. in 2005. She has 13 years of experience in Electrical Design and Drafting, including all types of retail, industrial, commercial and municipal buildings.

  • Mike Twitty, Mechanical Engineer, Campbell & Associates, Inc.

    Michael D. Twitty

    Michael received a Bachelor of Science Degree in Mechanical Engineering from the University of Tennessee at Chattanooga. He has worked in the field since 1998, and joined C&A in 1999. Mike has experience in HVAC and plumbing design, as well as site and storm drainage. He has since performed design work on theatres, hospitals, shopping center and assisted living facilities. Michael’s focus now has become plumbing and fire protection design, and he is proficient in the use of hydro flow storm water design software to aid in the design of complex storm water runoff and detention/retention solutions.

  • Tina Campbell

    Tina Campbell

    Tina has been associated with the construction industry for over 20 years including employment with Associated General Contractors of East Tennessee and participation in The Construction Specification Institute. She joined Campbell & Associates, Inc. in 2010 as the Executive Administration Assistant and Assistant Bookkeeper.


  • John Germ, P.E., Campbell & Associates, Inc.

    John Germ, P.E.

    John Germ has a Bachelor’s of Science degree in Engineering from the University of Tennessee at Knoxville.  His professional
    career began as a Draftsman-Estimator‑Designer with a construction company in Knoxville, Tennessee. He later served four years in the United States Air Force as Captain, serving as Navigator while on active duty.  Mr. Germ joined C&A in 1965, and later became the President and CEO, as well as majority share holder of the firm until 2010.  Mr. Germ remains involved in the firm, where he serves as a consultant to the company.  John has always been and continues to be extremely civically active volunteering to serve the community.

  • Phil Pennington2a

    Phillip M. Pennington, P.E.

    Mr. Pennington holds a Bachelor of Electrical Engineering from Georgia Institute of Technology since June 1978.

    He has thirty years of experience in electrical system design, lighting design, standby and emergency power application, fault current calculation and application of fuses, circuit breakers, variable drives and uninterruptible power systems, voltage drop and impedance calculations and controls.

    Phil holds Professional Engineering Registrations in multiple states.

    He rejoined Campbell & Associates, Inc. in December 2013 where he is a consultant engineering for the Electrical Department.

  • Steve Johnson 2a

    George S. (Steve) Johnson, Jr.

    Steve received a Bachelor of Science Degree in Engineering, Mechanical concentration, from then University of Tennessee at Chattanooga.  He has worked in the field since 1986, working at C&A from 1986-1990, and rejoining the firm in 2015.  Steve has experience in HVAC and plumbing design. He has since performed design work on educational facilities, hospitals, restaurants, commercial and municipal buildings, and laboratory facilities.  Steve’s focus now has become primarily HVAC design.  He has completed manufacturer’s training for multiple VRF systems.

  • Susan Chastain

    Susan Chastain

    Susan Chastain has been in the real estate and appraisal businesses for over 25 years including employment with Hale Realty, ERA Real Estate and The Haisten Group, LLC.  She holds a Bachelor of Science Degree in Marketing from Auburn University and joined Campbell & Associates, Inc. in 2014 as Administrative Assistant.

  • HVAC Designer

    Ryan Edmondson

    Ryan is currently working on his Bachelor’s of Science in Mechanical Engineering while working full time as an HVAC designer at C&A.  He has 10+ years’ experience in HVAC design, piping systems and nuclear experience. Ryan has worked as a mechanical designer since 2002 and has been with Campbell and associates since 2014.

  • Phillip Greer 2a

    Phillip Greer

    Phillip is a mechanical designer for Campbell & Associates. He joined Campbell and Associates in 2014.  Prior, he worked as a draftsman in the construction field.  Phillip is currently working towards his Bachelor’s degree in Mechanical Engineering at UTC while working full time at C&A.

  • Ian McDade1

    Matthew I. (Ian) McDade

    Ian obtained a Bachelor’s of Science degree from the University of Tennessee at Chattanooga in 2017.  Ian designs power, lighting, fire alarm and communication systems.  He joined Campbell & Associates in 2018.