Senior BMS & Controls Tech Support (HVAC/R)

Katz Recruitment; Sydney; On-site; AUD 110,000 - 140,000; Full time

Job summary

Katz Recruitment is seeking a Senior Technical Support professional in Sydney to transition from hands‑on HVAC/R work into a specialised role focused on BMS, controls and CO2 refrigeration. You will work on commercial refrigeration projects, configure and troubleshoot systems, and become a primary technical contact for customers while collaborating with global teams.

Primarily office‑based with occasional site visits; Sydney‑based candidates are preferred, with flexibility for other Australian

Qualifications

• Certificate III in Air Conditioning & Refrigeration or equivalent HVAC/R qualification.
• Qualified Refrigeration Mechanic or HVAC/R Engineering background.
• Minimum 4 years' experience within the HVAC and refrigeration industry.
• Strong understanding of commercial refrigeration, particularly CO2 systems.
• Experience with refrigeration controls, monitoring or supervisory systems.
• Strong knowledge of BMS, communication networks and control system integration.
• Strong technical troubleshooting, analytical and problem‑solving capability.
• Advanced proficiency with Microsoft 365 applications.
• Confidence working with technical drawings and documentation.
• Strong verbal and written communication skills.
• Strong customer service focus and professionalism.
• Ability to work independently while collaborating effectively with technical and commercial teams.
• A proactive mindset and willingness to learn new products, software tools and technologies.
• Experience with Java and/or HTML scripting would be advantageous

Responsibilities

• Provide technical support via phone, email, remote access and occasional customer site visits
• Support commissioning, configuration and troubleshooting of control and monitoring solutions
• Troubleshoot commercial refrigeration control systems, including CO2 applications
• Assist customers with product selection and application support
• Provide after‑sales technical support and warranty assistance
• Conduct warranty assessments and root cause analysis
• Develop and maintain supervisory graphics, BMS layouts and monitoring configurations
• Support integration of refrigeration controls with BMS and communication networks
• Deliver customer training and technical presentations
• Assist with pre‑configuration activities and system preparation
• Coordinate with international HQ, R&D, Quality, Sales and Service teams to resolve technical issues
• Maintain accurate technical documentation and service records
• Attend customer sites when required to support commissioning, troubleshooting and technical service

Skills

HVAC/R knowledge

CO2 refrigeration

BMS & controls

Troubleshooting

Documentation skills

Microsoft 365

Communication skills

Java scripting

HTML scripting

Education

Certificate III in Air Conditioning & Refrigeration

Job description

Katz Recruitment is seeking a Senior Technical Support professional in Sydney to transition from hands‑on HVAC/R work into a specialised role focused on BMS, controls and CO2 refrigeration. You will work on commercial refrigeration projects, configure and troubleshoot systems, and become a primary technical contact for customers while collaborating with global teams.

Primarily office‑based with occasional site visits; Sydney‑based candidates are preferred, with flexibility for other Australian