Senior Manager – Core Performance

Location

Flexible (UK) – with regular collaboration across Derby, Warrington and Manchester. The role may require some on-site time across these key locations.

The Role

Senior Manager – Core Performance. Provide technical and programme leadership for reactor core performance, spanning thermal hydraulics, fuel performance and advanced simulation capabilities.

Responsibilities

• Lead and deliver core performance activities across design, analysis and simulation.
• Define and implement the technical strategy for core thermal and fuel performance, including analytical method development.
• Manage multidisciplinary engineering teams, providing leadership, coaching and capability development.
• Own delivery of programme milestones, ensuring outputs meet quality, safety and regulatory requirements.
• Oversee and govern technical outputs, including safety case substantiation and design documentation.
• Manage key supplier and vendor relationships, including fuel development and analysis contracts.
• Establish and maintain robust engineering governance, configuration control and best practice processes.
• Engage with internal stakeholders, regulators and external partners to support programme progression.
• Identify and resolve complex technical and programme challenges, driving continuous improvement across the function.

Qualifications

• Degree‑qualified in a relevant engineering discipline and Chartered Engineer (or equivalent).
• Significant experience in nuclear engineering, with strong expertise in reactor core design, thermal hydraulics or fuel performance.
• Proven track record of leading complex engineering programmes and delivering against challenging milestones.
• Experience managing large teams (10–30+ people) and developing high‑performing engineering organisations.
• Strong understanding of nuclear regulatory frameworks and safety case development (e.g. ALARP, BAT principles).
• Experience working with advanced simulation and analysis tools (e.g. core physics or thermal hydraulics codes).
• Demonstrable experience managing suppliers, contracts and external technical delivery.
• Strong leadership and influencing skills, with the ability to engage and align stakeholders at all levels.
• Collaborative, proactive approach with the ability to drive decisions in a complex, evolving programme.
• Passion for innovation and continuous improvement in a highly regulated engineering environment.

Benefits

• Salary £71,000 – £93,200 (dependent on experience).
• Performance‑related bonus target 17%.
• Benefits allowance £5,000 per annum.
• Pension: 12% employer, 6% employee.
• 28 days holiday plus public holidays, with the option to buy or sell up to 4 days.
• Private medical insurance (BUPA single cover).
• Life assurance 6 times pensionable pay (£250 one‑off payment for new starters for home office purchases).

Inclusion & Diversity

We are an equal opportunities employer and welcome applications from all backgrounds. Inclusive support and flexible working arrangements are available where required.

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