GIS Commissioning Engineer

GIS Commissioning Engineer

About the Role

Location United Kingdom of Great Britain and Northern Ireland Homeworking and Teleworking Location Independent Worker Company Siemens Energy Limited Organization Grid Technologies Business Unit Service Full / Part time Full-time Experience Level Manager / Team Leader

A Snapshot of Your Day

As a GIS Commissioning Engineer, you will join our Substation Upgrades team, contributing to the delivery of high-voltage substation projects across the UK. This role is essential for expanding our capacity to meet growing business demands. You will be responsible for on-site commissioning and testing of high-voltage equipment, ensuring adherence to safety and quality standards while providing technical support post-energisation. Your expertise in GIS/AIS commissioning will be pivotal in bringing complex electrical systems safely into service.

How You’ll Make an Impact

40% On-Site Commissioning & Testing

• Plan and execute commissioning activities for high-voltage GIS & AIS equipment, including pre-commissioning checks, functional testing, and system integration.
• Lead the safe energisation of systems and perform final validation to ensure performance aligns with design specifications.
• Conduct inspections and functional tests on primary plant, protection systems, and control interfaces.
• Manage and execute site acceptance testing (SAT) in coordination with customer representatives.

30% Technical Planning & Documentation

• Review and interpret technical documentation, including single-line diagrams, schematics, interlocking logic, and protection settings before site execution.
• Prepare and maintain comprehensive commissioning records, test results, and site documentation to support project handover.
• Develop and manage punch lists to track and resolve issues identified during the commissioning phase.
• Create detailed commissioning reports and contribute to lessons learned for continuous improvement.

20% Safety, Quality & Stakeholder Management

• Implement and adhere to risk assessments, method statements, and permit-to-work controls for all site activities.
• Ensure all commissioning work complies with Siemens Energy HSE requirements, industry standards, and contractual obligations.
• Coordinate commissioning interfaces with project management, engineering, construction, and customer teams to ensure a smooth project flow.
• Act as the primary technical point of contact on-site during commissioning, participating in customer meetings and witness testing.

10% Fault Diagnosis & Technical Support

• Perform advanced fault-finding and root cause analysis on complex electrical systems during the commissioning phase.
• Implement and recommend corrective actions to resolve technical issues and ensure system reliability.
• Provide expert technical support during system troubleshooting and performance optimisation activities following energisation.

What You Bring

• Degree, HNC/HND, or equivalent qualification through apprenticeship or experience in Electrical Engineering or a related discipline.
• Proven experience as a subject matter expert in the commissioning, testing, and maintenance of high-voltage power transmission and distribution systems, specifically with GIS/AIS.
• Demonstrated ability to manage large or complex commissioning projects with limited oversight, working on customer sites within major infrastructure or energy projects.
• Strong technical expertise in high voltage electrical equipment and control systems.
• Excellent analytical and problem-solving skills, with a focus on troubleshooting.
• Full UK Driving License