Our Team


Pierre Coiron

PIERRE COIRON, P.E.
PRINCIPAL AND FOUNDER

Pierre’s twenty years of experience in construction and engineering include municipal and religious facilities, single and multi-family residential projects, retail buildings, heavy industrial facilities, pulp and paper mills, and manufacturing and power facilities.  Beyond field engineering, Pierre oversees the company’s staffing and training, and he manages communication and coordination with clients and contractors.  Under Pierre’s management, Stability Engineering has completed over 1,500 projects in Georgia and throughout the southeast.

Pierre holds Bachelor’s degrees in Construction Engineering and Civil Engineering Technology from Southern Polytechnic University as well as a Bachelor’s degree in Business Finance from Loyola University. He is a licensed Professional Engineer in Georgia, Alabama, Mississippi, North Carolina, Tennessee, Texas, and Virginia.  He is also a LEED accredited professional.


Allen Morris

ALLEN MORRIS, P.E.
PRINCIPAL

Allen has served as project engineer and project manager for a wide variety of project types, and has experience with steel, wood, masonry construction, and with tilt-up, cast-in-place, and post-tension concrete.  His ten years of professional experience include structural design for residential projects, office buildings, restaurants, retail buildings, adaptive-reuse projects, art installations, and historic preservation projects.  Allen enjoys working closely with clients in order to develop innovative, cost-effective solutions to structural design challenges.   Allen holds a Bachelor’s degree in Mechanical Engineering from Mercer University. He is a licensed Professional Engineer in Florida, Georgia, Louisiana, and South Carolina.


Yan Sun

YAN SUN,
PROJECT MANAGER

Yan supplies extensive knowledge derived from her 10+ years experience in the structural engineering profession. Her expertise in steel and industrial structures provides the company with substantial analytical and design capabilities. Yan also has experience with reinforced and post-tensioned concrete, wood and masonry construction, as well as in-depth seismic assessment of government projects. Yan takes pride in her thorough approach and seeing projects through to completion. Yan holds a Bachelor’s & Master’s degrees in Structural Engineering from TongJi University.


Chris Murphy

CHRIS MURPHY, E.I.T.
PROJECT MANAGER

Chris has served as staff and field engineer on many projects during his six years at Stability Engineering, including residential, commercial, municipal, adaptive reuse, and historical preservation projects. His previous experience with project management benefits Stability’s ability to work with contractors and resolve on-site circumstances. He has experience with wood, masonry, steel, and cast-in-place and tilt-up concrete, as well as non-destructive testing of existing structures. Chris prides himself on finding creative solutions to engineering problems and working alongside clients to achieve effective building designs. Chris holds a Bachelor’s degree in Civil Engineering from Georgia Institute of Technology.


James Breeden

JAMES BREEDEN,
PROJECT MANAGER

James has worked with Stability for two years as a structural designer and field engineer. He also brings a design background from Southern Polytechnic State University where he led student research for new design software used for MUTCD rigid pavement design. James was also the first student to earn the award of Civil Engineering Student of the year in 2012. He has experience in wood, masonry, concrete and steel design, as well as non-destructive field testing. James holds a Bachelors degree in Civil Engineering from Southern Polytechnic State University where he graduated at the top of his class.


Dragana Simon-Welch

DRAGANA SIMON-WELCH,
STRUCTURAL DESIGNER

Dragana has worked as a structural designer on a wide variety of project types.  Her training and background in architectural design has allowed Stability to expand its design software capabilities.  Dragana holds a Bachelor’s degree in Architecture from University of Belgrade.


Dejan Miljenovic

DEJAN MILJENOVIC,
STRUCTURAL DESIGNER

Dejan has provided structural design and inspection services for Stability Engineering on a variety of residential, commercial, and industrial projects. His experience with installation and onsite monitoring has provided a background for site inspections and field work. Dejan has also helped to develop designs for wood, steel and masonry structures, including AutoCAD and REVIT drafting. Dejan is a graduate from the Technical College in Serbia.


Justin Downey

JUSTIN DOWNEY, EIT
STRUCTURAL ENGINEER

Justin is a recent graduate of Southern Illinois University Edwardsville where he worked with a team researching bridge rehabilitation. During his time with Stability, he has worked on a wide range of both commercial and residential projects involving wood, masonry, steel and concrete structures. Justin holds a Bachelor’s degree in Civil Engineering with a structural focus.


JacobJeffcoat

JACOB JEFFCOAT
 STRUCTURAL ENGINEER

Jacob graduated from Kennesaw State University in December 2015 with a bachelor’s degree in Civil Engineering. Before his start with Stability, he completed an internship in the construction/project management field. In addition to working for the company during his senior year, Jacob was an active member of the school’s ACI and ASCE chapters. During his time at Stability, Jacob has assisted with a variety of projects, and he is eager to continue developing his skills with the company.


Josh_Stevenson

JOSHUA STEVENSON,
STRUCTURAL ENGINEER

Josh has served as a project engineer on a mixture of project types in his time at Stability, with experience in large new-construction projects utilizing large-scale modeling, moderate sized single-family new-construction and renovation projects, as well as smaller adaptive reuse projects involving steel, wood, masonry, and concrete. Josh takes pride in his dedicated work ethic and is always seeking opportunities to find creative, efficient, and cost-effective solutions.  Josh holds a bachelor’s degree in Civil Engineering from Southern Polytechnic State University, graduating summa cum laude with the president’s distinguished scholar award, as well as a bachelor’s degree in Media Communications from Asbury University.


Matt Smith

MATTHEW SMITH,
STRUCTURAL ENGINEER

Matthew Smith received his bachelor’s degree in Civil Engineering from Southern Polytechnic State University in Marietta, Georgia. During his time at SPSU, Matthew was involved with the school’s ASCE chapter in addition to interning part time at Stability Engineering. These experiences afforded him the opportunity to supplement his education with real world application in design and project development.


Craig Hagler, Stability Engineering

CRAIG HAGLER,
STRUCTURAL ENGINEER

Craig graduated from Kennesaw State University in the spring of 2017, with a degree in Civil Engineering. He served as an intern with Stability for his senior year of school, before joining the team full time after graduation. During his time with Stability Engineering, Craig has worked on many projects that have helped him to learn and grow as an engineer, including work with wood, masonry, concrete and steel members.


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DOUG ROJAS,
STRUCTURAL ENGINEER

Douglas Rojas received his bachelor’s degree in Civil Engineering in February 2015 from Andres Bello Catholic University in Venezuela, after an engineering internship at North Carolina State University. Before his start with Stability Engineering, Doug worked for Vepica Grupo Internacional working with industrial buildings. During his time at Stability, Douglas has provided structural design in concrete, steel, and wood commercial and residential projects, as well as inspection services.


Julie Coiron

JULIE COIRON,
OFFICE MANAGER

Julie Coiron has served as accounting and business manager since the company’s origin.  She has set up the accounting and billing system, secured loans, and handled all areas of human resources and payroll.  She has researched, procured and effectively integrated Billquick and Quickbooks software as well as managed development of all marketing collateral. Julie holds a Bachelor’s degree in Marketing from the University of New Orleans and a MS in Technical and Professional Communication from Southern Polytechnic State University.


Janette Brock

JANETTE BROCK,
ADMINISTRATIVE AND MARKETING COORDINATOR

Janette’s 20+ years of experience includes corporate, legal, homeless services and hospice organizations, as well as leadership training through the Buckhead Business Association. Her unique blend of experience provides a rare combination of abilities to the web marketing and office management operations, enhancing Stability’s capacity to provide exceptional service to our clients. Janette has a degree in Business Administration from Shorter University.