HVAC Technician

Job Description

• Diagnose, troubleshoot, and repair/replace faulty components in industrial HVAC systems.
  

• Read and interpret mechanical drawings, electrical wiring diagrams, and schematics.
  

• Troubleshoot live 415V control circuits on chillers and AC systems interfacing with PLC.
  

• Perform installation, inspection, and commissioning of HVAC systems and integration with plant monitoring systems.
  

• Ensure proper operation of pressurization systems and maintain filtration systems for dust, chemical contamination, and odors.
  

• Serve as on-call technician for emergency and after-hours breakdowns (holiday rotation).
  

• Conduct and attend toolbox meetings for work activities.
  

• Prepare progress reports using MS-Office.
  

• Apply work permit/work clearance systems and follow HSEQ safety protocols for hazardous chemicals.
  

Requirements

• Diploma in Heating, Ventilation, and Air-Conditioning from a recognized institute.
  

• Minimum 5 years hands-on experience in industrial HVAC systems, preferably in oil & gas or similar hazardous environments.
  

• Previous working experience in QAFCO is preferred.
  

• Proficiency in English (read, speak, and report writing).
  

• Strong knowledge of HVAC principles, thermodynamics, and fluid mechanics.
  

• Familiarity with industrial-grade HVAC equipment, controls, and PLC interfacing.
  

• Skills in welding and soldering techniques.
  

• Ability to work independently under limited supervision.
  

• Capability to work in extreme weather conditions.
  

• Well-versed in hazardous area classification, safety precautions, and work permit systems.
  

Requirements
5+ years of hands-on Siemens S7 experience — specifically S7-300 programming, diagnostics, and data block structure via Step 7 Classic or TIA Portal Profibus DP fluency — able to diagnose bus faults, read GSD device profiles, identify slave addresses, and recover from "MP Bus Blackout"-class faults without vendor support WinCC Flexible proficiency — able to navigate and extract tag configuration, alarm classes, and screen logic from an existing compiled WinCC Flexible project OPC UA implementation experience — via any of: Siemens Industrial PC OPC Server, KEPServerEX, open62541, or a Snap7-based Linux gateway solution Industrial networking — OT/IT convergence, unmanaged Profibus topology vs. managed Ethernet, VLAN design, and understanding of where IT security policy collides with OT real-time requirements Ability to independently read and produce electrical schematics, PLC I/O mapping sheets, drive parameter tables, and field device wiring diagrams Comfortable working on an active, high-visibility public-facing site in Qatar — able to obtain Qatar SafePass, site-specific HSE inductions, and work under the relevant site access protocols Fluent English — can write clear technical documentation and communicate directly with European OEM contractors, a remote software development team, and the client's facilities management team