Control System Service Technician

Valid8 Financial, Inc.; Anaheim (CA); Hybrid; USD 70,000 - 95,000; Full time

Benefits offered by this job

Medical coverage

Dental & Vision

STD/LTD

401K with match

Hybrid scheduling

Job summary

George T Hall Company is seeking a hands-on Control System Service Technician to troubleshoot, calibrate, service and support industrial control, combustion, and thermal systems across diverse customer applications.

Ideal candidates will read schematics, work with PLCs/HMIs, perform burner tuning, calibration, and startup support, and provide onsite and remote technical assistance. We offer a collaborative environment with growth in automation and process control.

Qualifications

• Ability to read and interpret electrical schematics, manuals, P&IDs, wiring diagrams.
• Experience with PLCs, HMIs, and process instrumentation.
• Strong troubleshooting skills in industrial environments.
• Ability to work independently in field environments.

Responsibilities

• Triage and troubleshoot power, logic, and equipment inputs/outputs.
• Service and repair industrial combustion and thermal systems, burners, valves.
• Check control loops (4-20mA) and instrumentation integrity.
• Calibrate instrumentation: pressure, temp, level, flow, analyzers, valves.
• Assist with burner startup and tuning and combustion safety checks.
• Work with PLCs, HMIs, sensors and automated controls.
• Read schematics, diagrams, and blueprints to resolve issues.
• Use ClickUp, Procore, and Acumatica for PM tasks.
• Assist installation and onsite startup of control systems.
• Provide onsite and remote technical troubleshooting and support.
• Prepare clear service reports with actions and recommendations.
• Support sales with technical application guidance.
• Educate customers on GTH products and services.
• Other duties as needed.

Skills

PLC/HMI experience

Electrical/Instrumentation

Field troubleshooting

Read electrical schematics

Tools

ClickUp

Procore

Acumatica

Job description

At George T. Hall Company, we are always looking for new and diverse talent and now we are seeking our next Control System Service Technician! If you enjoy a collaborative, technical environment, we have the opportunity for you.

George Hall started the George T Hall Company in 1932 and we continue to keep his vision and legacy alive. Through our evolution, we have adapted and grow into new markets and technologies, which has made us the system integrator you see today. GTH is CSIA and ISO 9001:2015 certified and a recipient of the 2023 Best Integrator of the Year award from Control Engineering. We are also proud to have been selected as one of the “Best Places to Work” in 2026 by the Orange County Business Journal and the Northern Nevada Human Resources Association. People are the foundation of any outstanding organization and we take pride in our diverse workforce that values curiosity, integrity, and innovation.

Our mission is simple: To bring value to our clients by utilizing our expertise in automation and control solutions to improve performance, reduce waste, and provide value data while establishing successful partnerships in the industry.

What we are looking for:

We are seeking a Control System Service Technician. The Controls System Technician position is responsible for troubleshooting, calibration, service, and support of industrial control, combustion, and thermal systems across a variety of customer applications. This role includes instrumentation calibration, burner tuning, PLC/HMI troubleshooting, startup support, and technical support. The ideal candidate is hands‑on, customer-focused, and interested in industrial automation and process control technologies.

Our clients are contractors or end users supporting a wide range of industries including water / wastewater, pharmaceutical, food & beverage, mining, aerospace, and more. We offer a number of products and services to these industries such as:

• PLC / HMI
• SCADA / Integration Software
• Thermal & Process Instrumentation
• Custom UL Control Panels
• Industrial Field Services

Essential Duties and Responsibilities:

• Conduct end-to-end troubleshooting of power and logic and ending with the input and output machinery, equipment or instrumentation.
• Troubleshoot, service, maintain, repair industrial combustion and thermal systems including burners, burner management systems, fuel trains, valves, and associated instrumentation.
• Determine integrity of control loops (4-20mA), instrumentation, process controllers, PLC hardware, and control power systems to support rapid repair of down equipment and processes.
• Perform calibration of instrumentation including pressure, temperature, level, flow, water analyzers, and control valves using handheld and PC-based calibration tools.
• Perform combustion system startup assistance, burner tuning, combustion safety checks, and air/fuel ratio adjustments for industrial thermal processes.
• Experience with industrial control systems including PLCs, HMIs, process instrumentation, sensors, and automated control components.
• Read and interpret electrical schematics, manuals, circuit diagrams, P&IDs, wiring diagrams, and blueprints to troubleshoot and resolve issues.
• Utilize Project Management tools, software, and procedures including ClickUp, Procore, and Acumatica.
• Assist with installation and startup of control systems including loop checks, instrumentation calibration, onsite startup, client training, and documentation.
• Provide onsite and remote technical troubleshooting and support for control systems, instrumentation, and combustion-related applications.
• Prepare clear service reports documenting the customer request, work performed, findings, corrective actions, recommendations, and follow-up items.
• Assist GTH sales teams with technical application support, product recommendations, and customer‑facing troubleshooting activities.
• Educate customers on GTH products & services.
• Other duties as needed.

Qualifications:

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required.

Reasonable accommodation may be made to enable individuals with disabilities to perform essential functions of the job.

• Ability to work independently in field environments while maintaining strong communication with customers, sales teams, and internal engineering staff.
• Strong technical and operational knowledge of mechanical, electrical, and electronic equipment and systems. Strong aptitude for repair and maintenance activities.
• Experience with industrial combustion systems, thermal processes, burner management controls, or flame safeguard systems preferred.
• Ability to read and interpret CAD layouts, bill of materials, and electrical circuitry diagrams and drawings.
• Ability to diagnose and repair electrical and mechanical issues. Issues may include testing, replacement or repair electrical systems including three phase or single‑phase electrical systems up to 600volts, AC or DC motors, power supplies, variable frequency drives, servo drives, transformers, motor starters, proximity sensors, encoders, programmable logic controllers (PLC) & Operator Interface Terminals (OIT).
• Knowledge of programmable logic controllers (PLCs) preferred. Ability to read electrical schematics, wiring diagrams, and PLC ladder and block logic. Ability to load programs or configure PLC’s, HMI, scanners.
• Advanced computer skills related to maintenance, service and configuration of electromechanical devices, instrumentation, and network systems.
• Ability to read and interpret Drawings and schematics.
• Communicates effectively both verbally and in written form.
• Ability to operate instrumentation equipment and interpret test results; reason through complex problems under pressure; use power and hand tools; use safety gear and equipment; operate personal computer in LAN/WAN environment; troubleshooting plant‑specific software programs; operate standard word processing, spreadsheet, database software; and operate standard office equipment.
• Strong troubleshooting aptitude with the ability to diagnose electrical, instrumentation, combustion, and process‑related issues in industrial environments.

Supervisory Responsibilities:

None

• Hybrid scheduling options (after probationary period)
• Medical coverage including dental, vision, STD, LTD, accident, and more!
• Flexible personal time off (PTO) program
• 401K retirement plan with generous company match.