BAS Controls Service Technician

Liberty Personnel Services, Inc.; Decatur (IL); On-site; USD 34,440 - 52,348; Full time

Benefits offered by this job

Company vehicle

Medical Insurance

Dental Insurance

Vision Insurance

401(k)

Paid Time Off

Professional development

Job summary

Liberty Personnel Services, Inc. is seeking a Building Automation Systems (BAS) Service Technician to support commercial HVAC control systems in Decatur, Illinois. The role focuses on diagnosing, servicing, and maintaining BAS to keep facilities running efficiently.

You will troubleshoot DDC systems, perform preventative maintenance, and assist with system upgrades while delivering reliable technical solutions to customers and documenting service activities.

Qualifications

• 3+ years of BAS or HVAC controls experience.
• Experience servicing commercial Building Automation Systems.
• Strong understanding of HVAC equipment and controls.
• Ability to troubleshoot DDC systems and control networks.
• Preferred experience with Niagara, Tridium, Johnson Controls, Siemens, Honeywell, Schneider Electric, Distech, Automated Logic, BACnet, or Modbus.

Responsibilities

• Diagnose and repair BAS/DDC control systems.
• Troubleshoot HVAC controls, controllers, sensors, and field devices.
• Perform service calls, preventative maintenance, and system repairs.
• Assist with controller replacements and system upgrades.
• Support customers with operational issues and technical solutions.
• Complete service documentation and communicate with project teams.

Skills

BAS/HVAC Controls

Troubleshooting

Field service experience

Control networks

Tools

Niagara/Tridium

Johnson Controls

Siemens

Honeywell

BACnet/Modbus

Job description

Salary & Benefits

Competitive hourly rate, company vehicle, Medical, Dental & Vision Insurance, 401(k), PTO, and continued professional development assistance.

Position Overview

We are seeking a Building Automation Systems (BAS) Service Technician to support commercial and industrial HVAC control systems in a stable organization with long‑term career opportunities. The role involves troubleshooting, servicing, and maintaining BAS while keeping customers’ facilities operating efficiently.

Responsibilities

• Diagnose and repair BAS/DDC control systems
• Troubleshoot HVAC controls, controllers, sensors, and field devices
• Perform service calls, preventative maintenance, and system repairs
• Assist with controller replacements and system upgrades
• Support customers with operational issues and technical solutions
• Complete service documentation and communicate with project teams

Qualifications

• 3+ years of BAS or HVAC Controls experience
• Experience servicing commercial Building Automation Systems
• Strong understanding of HVAC equipment and controls
• Ability to troubleshoot DDC systems and control networks
• Preferred experience with Niagara, Tridium, Johnson Controls, Siemens, Honeywell, Schneider Electric, Distech, Automated Logic, BACnet, or Modbus

Compensation & Benefits

Competitive hourly rate, company vehicle, Medical, Dental & Vision Insurance, 401(k), PTO, continued professional development assistance, and long‑term career opportunities.