CSD Services is a structural steel detailing firm with 40 years of experience in structural and architectural miscellaneous steel detailing. CSD Services started in Lubbock, TX as Callaway and Company in 1983. In 2006, Greg Callaway, President, re-located and restructured the company into CSD Services, Inc. and setup HQ in Friendswood, TX., a suburb of Houston. CSD Services uses the latest technology to provide accurate and timely drawings to our customers. Our dedicated, experienced staff is what makes CSD Services stand apart from other detailing firms. Our staff is professional, well- trained and ready to meet the individual needs of our customers.


Greg Callaway


Greg began working in the steel industry at the age of 15 in the Mosher Steel Detailer Training Program
and started his first detailing business at the age of 22 working out of his home.

With an entrepreneur's spirit, Greg opened up a steel detailing office in Lubbock, TX. in 1983.

With over 40 years of experience, Greg is extremely knowledgeable in all phases of the structural steel industry.

Greg enjoys bike riding, kayaking, fishing and spending time with his wife, 4 children and 6 grandchildren.


David Barajas

Vice-President of Operations

David is a native Texan, but raised in Madrid, Spain as a proud military brat of a US Air Force member
and is himself an Army Vet.

He holds a Commercial Drone (Part 107) Pilot Certificate and has a Masters in Information Technology.

David has over 30 years of Operational Management, Sales and IT experience and was the owner
of a Technology Services Company before joining CSD in 2007.

David enjoys physical fitness, specifically cycling, and participates in various "Century" cycling
events throughout the year and supports The MS Society and the Alzheimers Assoc.


Kevin Adames

Vice-President of Production

Kevin has over 15 years of detailing, structural design and drafting experience in the oil and gas industry,
as well as the industrial and commercial construction sectors. He has spent the last 9 years directly leading or managing drafting/design teams.

Throughout his career, Kevin has established a track record of success by leveraging a collaborative
leadership style to accomplish short and long-range objectives. An engaging and articulate communicator, Kevin clearly conveys complex information and proposes novel solutions to build consensus with key project stakeholders, including high-value clients and executive leadership.

Kevin received his undergraduate degree in Operations and Project Management as well as his MBA from Southern New Hampshire University in 2021.

He joined the team at CSD Services in May 2018 as a senior project manager.

Kevin enjoys spending time with his wife and 3 children, coaching youth sports, hunting, hiking,
fishing and working out.

Project Managers & Assistants

Kevin Neu

Senior Project Manager

Kevin has 33 years of experience in structural steel detailing
and has a Bachelor of Science in Architectural Studies from the
University of Texas.

He is proficient in AutoCAD, drafting with manual tools and trained
in 3D modeling software.

Kevin is very involved in his church and an active volunteer in his
community and he also enjoys time with his wife Nancy, their 3 children
and 5 grandchildren.

Erin Martin

Asst Project Manager

Erin graduated from Friendswood HS and attended San Jacinto College
before joining CSD with 12 years of Office/Admin experience.

While at home, she spends time with her family, two footed and four footed,
and has eclectic tastes in a variety of diversions, including Art, Nature,
Geology and Theology to name a few.

Fallyn Bugaj

Asst Project Manager

Fallyn has worked in the Maritime business for over 5 years then changed
careers to work in Childcare as an Assistant Director/Director when
she had her first child.

She has over 10 years of data entry experiences along with shipping
and receiving and, other office related duties.

Her experience in Quickbooks and other Office Applications brought her to
CSD Services to join the Accounting Dept.

In her free time she loves to spend time with family, she enjoys cooking,
baking and gardening.

Steel Detailers & Checkers

Bhavesh Gajjar (BG)

Sr. Structural Detailer/Checker

BG has over 20 years work experience in the structural engineering field. BG has a Bachelor of Engineering degree in Civil Engineering. He also received a Certificate in Elementary Structural Design from the University of Toronto. BG has successfully completed training courses in Tekla Structures, Supervisory Management, AutoCad-3D Modeling, Quality Control and ISO 9000, Quality Management and Network-Centered Computing. BG enjoys reading religious books and attending religious lectures, classes and events.

Arvin Martinez

Structural Detailer / Checker

Arvin has 10 years of experience as a 3D Modeler/Detailer working on projects
across the world from Australia to South East Asia,
to the U.S.A.

He received a Bachelor of Science in Civil Engineering at Bulacan State University Philippines.

Arvin enjoys Mountain Biking, computer games, is a basketball fan and likes home DIY projects.

Lolit Gutierrez

Sr. Structural Detailer/Checker

Lolit has 28 years of experience in steel detailing and first began working for Callaway and Co in 2000. She has a Bachelor of Science in Architecture and is proficient in SDS2 and AutoCAD. Lolit enjoys doing crafts with her twins, baking pastries and water color painting in her free time.

Josh Williams

Structural Detailer/Checker

Josh recently joined CSD Services as a transplant from California, he has 15 years of detailing
experience using Tekla Structures and has a broad range of knowledge of Structural and
Miscellaneous Steel including various stair types including spiral, curved, switchback, etc.

Other experience also includes various types of bridges and trusses, concrete formwork layout/design and utilizing BIM.

When not working he can usually be found Kart Racing or golfing.

Jim Hogue

Sr. Checker

Jim recently joined CSD Services after a successful career in engineering and construction management and 2 retirements.

He began detailing structural steel in 1968 in Dallas then relocated to Houston in 1975 and spent the following three plus decades in the oil and gas and construction industry.

The diversity of project locations enabled him to experience the cultures of North and West Africa, the Arabian Peninsula, Asia and South America, among others.

In the early 1990’s, he retired and opened a structural steel detailing office and operated it successfully for fifteen years then returned to the world of O&G and Construction
Project/Engineering Managment until his 2nd retirement in 2015.

Jim's experience includes commercial, medical, education and infrastructure projects and he has managed specialty construction related activities such as logistical support,
ROW permitting, and compliance and classification activities related to offshore installations.

Jim is married with two daughters and two grandchildren, and when he is not on the dancefloor square dancing with his wife,
he competes in clay target shooting events.


Document Control

Brooke Smalley

Document Control

Brooke joined CSD Services in 2014 as a document control specialist
shortly after graduating from Clear Springs High School.

Brooke is currently taking college classes to further develop her
knowledge and experience.

When not working or studying, Brooke enjoys spending time with her family

Mia Berlanga

Document Control

Mia joined the CSD Services document control team
in early 2021 while attending college.

She graduated from the University of Houston in May 2021
with a Bachelor of Arts in Psycholgy.

When not working Mia enjoys spending quality time with her
loved ones, walking and hiking nature trails and reading novels.



Patsy Callaway

Accounting/Human Resources

Patsy has over 40 years of experience in accounting and
15 years of experience in Human Resources.

She is experienced in Quickbooks and Peachtree software along
with experience in all phases of accounting, insurance and legal
documentation requirements for employees and business.

Patsy enjoys gardening, sports and spending time with her family.

Madelynn Gallman


Madelynn joined our Accounting Dept in 2021, bringing over 10 years
of Accounting and General Office experience with her.

Her previous experience and knowledge of general construction,
document control and production assistance gives her a great
foundation for her duties in accounting.

Madelynn’s spare time is used to spoil her children and
spend time with family and pets.