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 Commissioning Engineer is responsible for executing, and completing the commissioning of HV substations to ensure that all primary and secondary systems are installed, tested, and energised safely, in accordance with project specifications, statutory regulations, and client requirements. Key Responsibilities Commissioning Execution Plan and carry out interface commissioning activities for transformers, switchgear, protection, control, and auxiliary systems. Execute commissioning in accordance with approved Commissioning Strategies, Inspection & Test Plans (ITPs), and Method Statements. Coordinate commissioning activities across construction, protection, control, SCADA, and client teams to achieve safe energisation milestones. Primary Equipment Commissioning HV and MV equipment interface commissioning including: Power transformers and auxiliary transformers HV/MV switchgear (AIS, GIS) Circuit breakers, disconnectors, earth switches Current transformers (CTs) and voltage transformers (VTs) Perform functional and operational checks prior to energisation. Protection, Control & SCADA Carry out testing and commissioning of protection and control schemes, including: Differential, distance, overcurrent, busbar, and transformer protection Inter-tripping, interlocking, alarms, and indications Perform secondary and primary injection testing using approved test equipment. Verify SCADA, remote control, and IEC61850 communication where applicable. Safety and Compliance Carry out all commissioning activities in strict compliance with: Client and company's Safety Rules and EHS procedures Approved method statements and risk assessments Maintain safe systems of work when interfacing with live or adjacent HV plant. Stop work and escalate any unsafe conditions, noncompliances, or protection anomalies. Documentation & Quality Produce, review, and sign off protection test records, relay settings verification sheets, and commissioning certificates. Ensure test results comply with approved Inspection & Test Plans (ITPs). Support resolution and closure of commissioning defects and punchlist items. Contribute to asbuilt documentation and handover packs. Interface & Support Work closely with: Lead Commissioning Engineer Site Manager Client commissioning teams Support commissioning panels, energisation reviews, and outage planning activities. Provide technical input during fault investigations or commissioning issues. Authorisations CAT-1 for non-energised SSEN stations and CAT-3 for energised SSEN stations NGP for non-energised NG stations and NGCP for energised NG stations CCNSG or equivalent ticket Typical Work Environment HV substations during construction, outage, and commissioning phases. Sitebased testing, and 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.