Controls Service Technician - San Antonio, TX

The Controls Service Technician is responsible for the installation, maintenance, troubleshooting, and repair of building automation systems (BAS), control systems, and related components. This role ensures optimal performance of HVAC, lighting, and other facility automation systems in commercial or industrial environments. The technician works closely with clients, engineers, and project managers to deliver quality service and support.

• Diagnoses system performance through observation, testing and setup as required by trade/position.

• Install, commission, and calibrate building automation and control systems (e.g., HVAC controls, DDC systems, PLCs).

• Perform routine and emergency service calls to diagnose, troubleshoot, and repair control system hardware and software issues.

• Read and interpret control drawings, wiring diagrams, sequences of operations, and technical manuals.

• Test system functionality and document system performance.

• Provide technical support and guidance to customers and end users.

• Perform preventive maintenance on control systems and components.

• Ensure compliance with local codes, safety standards, and company procedures.

• Maintain accurate service records and complete required documentation for each job.

• Collaborate with engineering, project, and customer teams to ensure proper integration and performance of control systems.

• Maintain tools, equipment, and inventory in a clean and safe manner.

• Stay current on industry technologies, products, and best practices.

• Performs planned maintenance and inspections as indicated in the service agreement.
• Executes service contracts, quoted projects, and service calls in alignment with directives.
• Completes documentation of invoicing data based on hours worked and materials/equipment used to complete the service.

• High school diploma or GED required; Associate's degree or technical certification in HVAC, Electronics, Mechatronics, or a related field preferred.

• 2+ years of experience in building automation or industrial control systems preferred.

• Experience with BAS platforms such as Trane, Siemens, Johnson Controls, Honeywell, or similar systems.

• Working knowledge of control wiring, electrical systems, and low-voltage systems.

• Ability to read blueprints, schematics, and technical documentation.

• Strong troubleshooting and problem-solving skills.

• Excellent customer service and communication skills.

• Ability to work independently or as part of a team.

• Valid driver's license and clean driving record.

• Will require travel to customer sites within the San Antonio Metro-plex and on-call availability.

Founded in 1946, TDIndustries is a premier, employee-owned Mechanical, Electrical, and Plumbing (MEP) company delivering full-lifecycle building solutions-from design and construction to service and facilities maintenance. We power critical environments like hospitals, schools, data centers, stadiums, and commercial buildings across Texas and the Southwest.

Our Partners (employees) are the core of our success. As an employee-owned company, you have a voice, a stake, and a clear path to grow. Recognized by FORTUNE Magazine as a "100 Best Company to Work For," we invest in top training, career development, and a culture built on trust and servant leadership.

Join a growing team where your skills matter, and your future is built to last.

At TDIndustries, we believe opportunity should be built - and shared - by all. Whether you work with tools or technology, in the field or the office, we hire and grow people based on skill, potential, and integrity - never labels. We value the diverse paths that bring people to our team and welcome Partners of all backgrounds, including differences in race, color, religion, sex, gender identity or expression, sexual orientation, age, ability, military service, and more. What matters most is how we work together to build excellence.