HVAC Controls Specialist III

Texas Air Systems has been shaping the HVAC landscape in Texas for over four decades. With 500+ team members and seven offices statewide, we partner with over 60 leading manufacturers to deliver custom, high-performance solutions that stand the test of time.

Here, your work matters. You’ll be part of a team that values collaboration, rewards curiosity, and gives you the tools to keep growing. Whether you’re just getting started or looking for your next big challenge, this is a place where you can thrive and make a real impact.

The Controls Specialist III serves as a senior technical authority within the controls organization, providing advanced expertise in the design, implementation, and optimization of Building Automation Systems (BAS). This role leads complex, large‑scale system integrations, drives technical excellence across projects, and supports the development of internal capabilities through mentorship and standardization of best practices. The Controls Specialist III acts as a key escalation point for technical challenges and plays a critical role in ensuring high‑quality project delivery and system performance.

• Lead the implementation of large‑scale, multi‑system BAS projects from startup through commissioning.
• Architect and develop control strategies, sequences of operation, and system designs for complex applications.
• Perform advanced diagnostics, troubleshooting, and system optimization to ensure peak performance.
• Serve as the primary escalation point for complex technical issues across projects and service work.

• Lead commissioning efforts, ensuring systems are installed, programmed, and functioning according to design specifications.
• Validate system performance and ensure alignment with customer requirements and industry standards.
• Identify opportunities for system improvements, energy efficiency, and operational optimization.

• Develop and promote best practices, technical standards, and consistent programming methodologies across the Controls team.
• Support process improvement initiatives to enhance project execution, efficiency, and quality.

• Partner with Sales and Engineering teams to support estimating, design reviews, and preconstruction planning.
• Provide technical input on system architecture, integration approach and project feasibility.
• Support the development of internal technical standards and engineering best practices across the organization.

• Train, mentor, and support Controls Technicians and Specialists across varying experience levels.
• Share technical knowledge and provide guidance to elevate overall team capability and consistency.

• Advanced expertise in DDC programming, system architecture, and controls design.
• Proficiency in multi-protocol system integration, including BACnet, Modbus, and Lon Works.
• Strong knowledge of IP-based networking and advanced troubleshooting techniques.
• Experience with energy analytics, system optimization, and performance tuning.
• Deep understanding of HVAC mechanical systems and their integration with BAS platforms.
• 6 – 10+ years of experience in Building Automation Systems (BAS/BMS).
• Proven track record of leading complex BAS projects and system integration.
• Recognized as a technical subject matter expert within the Controls field.
• Relevant technical certifications or training in BAS platforms preferred (e.g. Niagara, Distech, or similar).

This position operates in both office and field environments, with significant time spent at customer sites, construction locations, and mechanical rooms. The role requires close collaboration with engineering, project management, and field teams. Work may be performed in environments with varying temperatures, noise levels, and conditions typical of commercial and industrial facilities. Use of personal protective equipment (PPE) may be required during site visits.

• Regularly required to stand, walk, and move throughout job sites for extended periods.
• Frequent use of hands…