Leading the way in top-tier EPC.

Jeff Sipes is the CEO of S&B, an industry-leading engineering and construction firm that serves the refining, chemical, midstream and industrial sectors. S&B employs more than 4,500 people across multiple locations in the U.S. and abroad.

After earning his Bachelor of Science degree in Civil Engineering from Texas Tech University, Jeff started his career as a field engineer and surveyor. Today, Jeff has more than 30 years of experience in the engineering and construction industry as a project manager, business unit leader, strategist and executive. In 2010, Jeff was elected to the Texas Tech Civil Engineering Academy. 

John Parker joined S&B in 1990 and served as a civil / structural engineer, estimator, project engineer, project manager, project director, operations manager and senior vice president of EPC and construction before being promoted to his current role.

John has experience in managing both grassroots and revamp projects and has been integral from the conceptual phase through construction, including startup activities. He is adept at managing all facets of projects throughout their lifecycles, including scope development, execution planning, cost estimating, scheduling and construction planning.

John earned bachelor’s degrees in Civil Engineering and Architecture from Texas Tech University. He is a Licensed Professional Engineer in the state of Texas.

Greg Hafer joined S&B in 1992 and served as a piping engineer, mechanical department head, manager of proposals, vice president of business development and senior vice president of commercial before being promoted to his current role.

Greg has nearly 40 years of engineering, procurement, and construction experience. He has been an integral part of S&B throughout his tenure, by leading strategic initiatives and contributing significantly to the company’s expansion and success in target markets.  Greg’s focus is on aligning S&B's strengths and customers’ needs to better serve them.

Greg earned a bachelor’s degree in mechanical engineering from Stanford University and is a licensed professional engineer in Texas.

Valerie Carlson is responsible for optimizing S&B’s financial performance and oversees the company’s accounting and finance functions.

Valerie joined S&B from Members Choice Credit Union, where she served as Chief Financial Officer. She has more than 20 years of experience in oil and gas, construction, and financial services. Valerie earned her bachelor’s degree in business administration from the University of Houston – Victoria and her master’s degree in accounting from the University of St. Thomas. She is a licensed CPA.

Dean Quinn joined S&B in 2001 and is responsible for all legal, risk management, human resources and compliance matters. Prior to S&B, Dean served at another international EPC company, handling legal and business matters for projects around the world. He began his career in private law practice, trying construction and commercial lawsuits and advising business clients.

Dean works with and serves on the boards of several academic, community and philanthropic institutions. He earned his Finance and J.D. degrees from Texas Tech University.

​Gordon Beaver joined S&B in 1995, serving several years as Sr. Safety Manager before being promoted to Vice President and later Sr. Vice President. Before S&B, Gordon built a long and distinguished career with another major EPC firm where he worked his way up from a structural iron helper to senior safety manager.

Mike Janssen oversees all engineering operations and project management activities for S&B.

Mike has 21 years of industry experience and began his career at S&B in 2006. During his time at S&B, Mike has held several roles across the company including Project Engineer, Project Manager, Alliance Manager, Director of Projects and Alliances, Vice President of EPC and Project Management; and, most recently, Vice President, Oil, Gas & Chemicals.

Mike earned a Bachelor of Science in Mechanical Engineering from Texas A&M University and a Master of Business Administration from Rice University.

Dale Haynie began his career in the industry as a pipefitter and has been with S&B for 21 years. Throughout his time with the company, he has held roles managing technical services and providing direct oversight for operations on multiple projects for key clients as an area operations manager. 

Today, Dale oversees all construction activities and integrated EPC projects at S&B with a focus on execution excellence.

Kent Danforth oversees all functions of procurement, including purchasing, expediting, logistics, materials management and source inspection.  Additional responsibilities include construction services, third-party rentals and facilities management for all S&B properties.

Kent began his career with the United States Army and then segued into shipbuilding as an apprentice fabricator and welder.  Once he completed his apprenticeship academics Kent moved into procurement and supply chain management, which has lasted for 33 years with three separate companies. 

Kent has international experience, specifically with a focus on the Middle East supply chain. For the last 11 years, Kent has held positions at S&B as a Subcontracts Manager, Procurement Manager, Director Procurement and VP Procurement before being elevated to his current role.

Justin Borchardt serves as Senior Vice President, Organizational Excellence for S&B. Bringing more than 20 years of industry experience to his role, Justin leads S&B’s corporate planning initiatives, focused on growth, continuous improvement, operational efficiency, and strategic alignment across the entire organization.

Since joining S&B in 2008, Justin has held several senior leadership roles in business development and corporate strategy, working across the downstream, petrochemicals, chemicals, and midstream markets. With a deep understanding of industry dynamics, Justin has successfully led teams to enhance business performance, optimize project execution, and improve customer satisfaction. He has also contributed to S&B’s continuous improvement efforts, leading initiatives that have resulted in enhanced quality and operational excellence in addition to strengthening customer partnerships.

Active in the engineering and construction industry, Justin has been involved with the Engineering and Construction Contracting (ECC) Association since 2011, serving in leadership roles, including Chair in 2019 and as a member of the Executive Advisory Board.

Justin holds a bachelor’s degree in chemical engineering from The University of Texas in Austin, Texas.

Wendy Coker is the Vice President of Human Resources (HR) at S&B, where she leads the company’s strategic HR initiatives to support its mission and long-term growth. In this position, Wendy oversees several key functional areas, such as HR operations, recruitment, total rewards and employee relations, to support S&B’s commitment to its people and drive a positive and impactful culture.

With more than 15 years of experience in the oil and gas, construction, and human resources sectors, Wendy brings a strong track record of driving organization success through strategic talent management and employee engagement. Since joining S&B in 2019, she has played a pivotal role in strengthening the business’ HR operations and fostering an environment that attracts and retains top talent.

Wendy holds a bachelor’s degree from Florida International University and has earned the professional designation as a Certified Employee Benefit Specialist.