Description We are seeking an experienced and highly motivated Technical Senior Project Manager to lead the technical assurance function during the design phase of the HRS03 HV Power package for HS2. You will be working directly for the Siemens Costain Joint Venture (SMCJV) and reporting to the Delivery Director. Working closely with the Engineering Lead, Principal Design Manager and the engineering team. You will be instrumental in ensuring the successful delivery of both Scheme and Detailed designs, ensuring that the SMC design satisfies HS2’s Technical Assurance Requirements. This role requires a deep understanding of complex infrastructure projects, electrical power systems, and robust technical assurance principles. Responsibilities Responsibilities Technical Leadership & Management: Lead and manage technical assurance team. Systems integration in accordance with WI 300. Supporting the respective lead designers, the rail systems integrator (the employer), you will also be expected to manage specialised topics such as system safety, interoperability, and RAM. This role manages a team that includes the Requirement and System Integration manager. Oversee the delivery of all design outputs for the HRS03 HV Power package, managing the auditing processes required across design packages ensuring compliance with project requirements, technical specifications, and relevant standards. Implement and enforce the design processes and procedures as stipulated in WI 0300 Systems Integration, Contractor's Design, Digital Engineering, and Transverse Process Requirements, particularly regarding systems integration, requirements management, interface management, and technical assurance. Technical Assurance: Support the Engineering Lead in the enabling HS2 Technical Assurance (TA) process, ensuring all deliverables meet the HS2 Design Vision and the Employer’s Requirements. Programme, Budget Management & Reporting: Ensure the technical function supports the overall design programme for the HRS03 HV Power package, identifying critical paths, dependencies, and potential risks. Monitor design progress against the programme, proactively identifying and addressing any deviations to ensure on-time delivery. Risk Mitigation: Contribute to the design risk register, focusing on reducing technical uncertainty as the design matures and before the construction phase begins. Stakeholder Management: Client Interface: Act as the primary technical point of contact for the HS2 Ltd Project Manager, managing design approvals, site access requirements, and handover documentation. Collaborate closely with the Lead Integrator and Lead Designer roles, as defined in WI300, to ensure seamless integration of the HV Power system with the wider HS2 railway system. Interface Management: Support the Engineering Lead to resolve complex technical interfaces between power systems and the SCADA control layer, ensuring "design for manufacture" and "design for maintenance" principles are applied. Risk & Assurance: Identify, assess, and manage design risks, developing and implementing effective mitigation strategies. Ensure all designs undergo rigorous technical assurance processes, adhering to the three levels of technical assurance (railway-level, system-level, and contract-level) outlined in WI300. Champion a culture of safety and quality within the design team, ensuring all designs meet the highest standards of reliability, availability, maintainability (RAM), and system safety. Safety & CDM: Ensure all designs comply with the Construction (Design and Management) Regulations 2015 and HS2's specific health and safety requirements. LI-SA2 Qualifications Essential Experience: 8 years in project management for a tier-1 contractor, specifically delivering high-value HV power or electrification packages. JV Experience: Previous experience working within a Joint Venture (JV) structure is highly desirable. Compliance: Strong understanding of Network Rail or HS2 technical standards and UK DNO interface requirements. Education: Degree in Electrical Engineering or related field; Chartered status (Ceng) or APM ChPP is preferred.