Job Requirements

At Quest Global, it's not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impossible possible. Our people are driven by the desire to make the world a better place-to make a positive difference that contributes to a brighter future. We bring together technologies and industries, alongside the contributions of diverse individuals who are empowered by an intentional workplace culture, to solve problems better and faster.

Job Purpose

The High Voltage Substation Commissioning Technician supports the safe execution of commissioning activities on HV substations by carrying out hands-on testing, inspections, and verification of primary and secondary plant under the direction of a Commissioning Engineer or Lead Commissioning Engineer..

Key Responsibilities

Commissioning Support & Execution

• Assist with the execution of commissioning and pre-commissioning activities on HV substations typically ranging from 33 kV to 400 kV.
• Carry out commissioning tasks in accordance with:
  • Approved Commissioning Strategies
  • Inspection & Test Plans (ITPs)
  • Method Statements and Risk Assessments
• Follow instructions from the Lead Commissioning Engineer, Commissioning Engineer, or SAP as applicable.

Primary Plant Testing & Verification

• Support commissioning and testing of HV equipment including:
  • AIS / GIS switchgear
  • Circuit breakers, disconnectors, and earthing switches
  • Power and auxiliary transformers
  • Current transformers (CTs) and voltage transformers (VTs)
• Carry out visual inspections, mechanical checks, functional checks, and continuity testing.
• Assist with primary injection tests and HV functional testing as directed.

Secondary Systems & Protection Support

• Assist with commissioning of control and protection systems, including:
  • Wiring continuity and point-to-point checks
  • Trip, close, interlocking, alarms, and indications
• Support secondary injection testing under supervision using approved test equipment.
• Assist with SCADA and control system verification, including indications and remote status checks.

Test Equipment & Site Activities

• Set up, connect, and safely operate commissioning test equipment under instruction.
• Carry out safe isolation, earthing, and reinstatement of test circuits as directed.
• Maintain test equipment, leads, and tools in a safe and serviceable condition.

Safety, Compliance & Site Discipline

• Work strictly in accordance with Client Safety Rules, permits, and site authorisations.
• Participate in toolbox talks, safety briefings, and site inductions.
• Maintain a clean, safe working environment and immediately report unsafe conditions.
• Never undertake unsupervised work beyond personal authorisation level.

Documentation & Reporting

• Accurately record test results, observations, and measurements on approved test sheets.
• Report defects, discrepancies, or installation issues to the Commissioning Engineer.
• Assist with completion of commissioning records and handover documentation.

Authority & Accountability

• Accountable for the safe and accurate execution of assigned commissioning tasks.
• No authority to energise plant or alter commissioning scope without instruction.
• Responsible for following procedures and escalating concerns immediately.

Authorisations

• CAT-1 for non-energised SSEN stations
• NGP for non-energised NG stations
• CCNSG or equivalent

Typical Work Environment

• Site-based commissioning activities.
• 10 hours/day with 6 days/week and 11 days/fortnight rotations for onshore stations.
• 12 hours/day, 14 days rotation for offshore stations.

We are known for our extraordinary people who make the impossible possible every day. Questians are driven by hunger, humility, and aspiration. We believe that our company culture is the key to our ability to make a true difference in every industry we reach. Our teams regularly invest time and dedicated effort into internal culture work, ensuring that all voices are heard.

We wholeheartedly believe in the diversity of thought that comes with fostering a culture rooted in respect, where everyone belongs, is valued, and feels inspired to share their ideas. We know embracing our unique differences makes us better, and that solving the worlds hardest engineering problems requires diverse ideas, perspectives, and backgrounds. We shine the brightest when we tap into the many dimensions that thrive across over 21,000 difference-makers in our workplace.