Principal Protection & Control Engineer - Transmission & Substations Contract (Outside IR35) £86-90 per hour Glasgow (Hybrid / Site Visits) Immediate Start RESPONSIBILITIES: * Lead protection & control design for high-voltage substation and transmission projects. * Approve protection schemes, relay settings, and technical designs. * Review and sign off detailed substation protection packages (up to 400kV). * Carry out protection coordination and fault level studies. * Review vendor documents, specifications, and technical submissions. * Support design from early stage through to commissioning. * Provide technical input during construction and site activities. * Ensure compliance with UK standards, CDM regulations, and client requirements. * Lead engineering delivery on complex substation projects. * Provide quality assurance and technical governance across deliverables. * Mentor junior engineers and support team development. * Liaise with clients and project stakeholders. SKILLS / REQUIREMENTS: * 12 years' experience in Protection & Control engineering. * Strong background in HV transmission and substation projects (132kV-400kV). * Experience in senior or principal engineering roles within utilities. * Strong understanding of protection systems, relays, and grid operations. * Experience reviewing and approving technical designs and vendor data. * Knowledge of UK transmission standards and CDM regulations. * Strong client-facing and stakeholder management skills. * Ability to lead multiple technical workstreams. * Experience mentoring engineers. DESIRABLE: * Experience with National Grid or similar transmission operators. * Experience in formal technical approval or authority roles. * Background in major UK infrastructure or energy projects.