OUR TEAM 

Our team is comprised of highly qualified professionals that truly value the importance of the relationships they build with clients, subcontractors and fellow employees. We are deeply rooted in the community, we take pride in knowing our projects are where we live, work and play.

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DUSTIN SEIDEL

OWNER

Dustin has lived in New Braunfels his entire life and he’s the fourth generation to do so. His family has been heavily involved in the community since the early 1920’s and he has an extensive knowledge of this area in the construction and real estate arena. Dustin graduated Texas A&M University in 2003. After graduation Dustin worked for John Seidel Enterprises as a Project Superintendent overseeing new commercial construction projects. He co-founded Seidmoore Construction in 2009 and in 2014 re-structured the company and changed the name to Seidel Construction. His hobbies include cattle ranching, hunting and fishing with his wife, kids, family and friends.

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MELISSA CALLAS

CEO

Melissa was raised in Albuquerque New Mexico and found her way to beautiful New Braunfels Texas in June 2018. After completing courses at Dodge City Community College and the University of New Mexico, she began her career in the construction industry 20 years ago when she was employed by a family friend who owned a commercial construction and house moving company. Throughout her career, she has been a part of commercial, residential, and utility construction companies each contributing to her growth and knowledge of the industry and organizational structure. Melissa is passionate about building a better community while harvesting the culture each community desires. She is dedicated to building strong teams who work together to achieve success not only for the projects but for one another. Melissa has two daughters with her husband Nick, and they enjoy being fans at their daughter’s sporting events, hitting the links for a good round of golf, or just kicking back in the backyard.

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BRANDON KOROPSAK

CHIEF ESTIMATOR

Brandon was born and raised in San Antonio and moved to New Braunfels with his wife in 2013. He graduated from Texas A&M University – Kingsville with a degree in Civil Engineering. After graduating, Brandon began his career as a geotechnical and facilities engineer with Raba-Kistner Consultants. He then moved on to the construction industry spending time as an estimator as well as a construction quality control manager for Mapco, Inc., a federal construction contractor based in San Antonio. Most recently, Brandon worked as a crude oil marketer for an oil and gas midstream company. Brandon joined the Seidel team in March of 2018 and is excited to be involved with a great company and group of people. In his time away from work Brandon enjoys spending quality time with his wife and two daughters as well as hunting, fishing, and playing softball.

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MARY CASTILLO

FINANCE LEAD

Mary Castillo joined the Seidel Construction team in 2020 and has over 20 years of experience in accounting. In her current role as an Accountant, she oversees and manages accounting operations – monthly account reconciliation, asset management, financial reporting, payroll, accounts payable, accounts receivable, cash-flow forecasting, and year-end. With construction accounting as her forte, she takes pride in adding value with her role by analyzing financials and discovering opportunities for cost savings and helping keep the project on track. Mary earned an Associate’s Degree in Accounting Technology, A.A.S., from San Antonio College. She resides in Seguin with her husband, Paul, and their three sons. In her spare time, she enjoys crafting, traveling and creating unforgettable memories with family and friends.   

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MELISA NU'U

HR/OFFICE ADMINISTRATOR

Melisa Nu’u began her construction career in the late 90s as an executive assistant at a general contracting firm in the San Francisco Bay Area. In 2007, God began opening doors for her growing family, which included her husband Walter, and children Kionasina, Polamalu, and Salamasina. Those doors led the family to the great state of Texas. Upon settling in New Braunfels, Melisa continued her passion for people and construction with a large commercial paint company based in San Antonio. She joined Seidel Construction in 2019, initially as an Assistant Project Manager, then furthered her career as a Project Manager and currently holds the HR/Office Administrator position. In her current role, Melisa supports the company’s employees with everything from development to IT solutions and records management. Melisa has a heart for Jesus, as well as a drive for community. She has been involved in many local organizations, from Girl Scouts, YMCA and CYO coaching, and currently supports high school and college groups. The Nu’u family can be found at a sports field or gym typically every weekend.

CORE VALUES 

Take Pride in Who You Are, Where You Work, and What You Do.
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BE COMMITTED

Commit to the LORD whatever you do, and he will establish your plans.
                                                                                                                  Proverbs 16:3

DO THE RIGHT THING

Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up.                                         Galatians 6:9

WORK TOGETHER

I appeal to you, brothers and sisters, in the name of our Lord Jesus Christ, that all of you agree with one another in what you say and that there be no divisions among you, but that you be perfectly united in mind and thought.                                                             1 Corinthians 1:10

STEADFAST GROWTH

Let the wise listen and add to their learning, and let the discerning get guidance.                                                                            Proverbs 1:5

OUR PASSION

Inspire pride in community, company and family.

OUR NICHE

Building trust in the construction process.