400kV SAP needed for a Major Offshore Wind project in the United Kingdom. Responsibilities: Implement and ensure compliance with Electrical Safety Rules on site. Act as Senior Authorised Person for HV/MV/LV systems. Plan, manage, prepare, and execute electrical works offshore. Provide operational advice on high-voltage installations including WTG, offshore substations, and HV cables. Oversee safe commissioning of grid connections, substations, and associated MV/HV/LV equipment. Ensure safety, security, and integrity of the HV network. Coordinate MV/HV/LV commissioning activities during all construction phases. Take operational responsibility for an entire offshore substation. Manage outage planning and network control in collaboration with Control Engineers. Prepare, review, and check high-voltage switching schedules. Update MV/HV/LV schematic diagrams and ensure documentation accuracy. Conduct site inspections, safety audits, and worksite assessments for electrical matters. Coordinate with project management to communicate accurate progress updates. Manage and coordinate HV/MV/LV commissioning activities across the project. Liaise with external grid operators and participate in commissioning panel meetings. Review method statements relating to electrical tasks. Deliver technical advice and engineering support to working parties. Participate in FAT and SAT testing and provide related reports. Contribute to commissioning manuals, quality plans, and technical documents. Plan resources, work activities, and switching programs. Lead toolbox talks and safety briefings. Perform pre- and post-energization checks across the wind farm. Establish grounding, isolation zones, and worksite demarcation. Act as a Training Mentor and support staff authorizations and assessments. Carry out project-related administrative tasks. Use Microsoft Office (Excel, Word, Outlook) for reporting and communication. Participate in both offshore and onshore work rotations if required. Be available for on-call responsibilities during certain work tasks. Work in adverse conditions or emergency scenarios when required.Requirements: Appropriate electrical qualification relevant to HV authorization (SAP level). Several years of experience in high-voltage operations and commissioning (400 kV). Offshore experience preferred. Minimum 3 years' experience working with onshore substation systems. Strong understanding of MV/HV/LV systems, switching, and commissioning. Up-to-date GWO and HUET with CA-EBS (as required by site). Able to meet offshore climbing gear weight limits (maximum 120 kg / 264 lb). Able to work a 14/14 offshore rotation. Capable of working in adverse weather and emergency environments. Must provide own iPhone compatible with required security software. Must allow installation of mandatory security management applications on any personal mobile device used for work. Must bring personal work clothing and offshore safety boots (additional PPE provided onsite)