Engineer – Core Design, Performance

Role Overview

• Support development and refinement of neutronic and/or thermal‑hydraulic models of the reactor core
• Deliver technical analysis across core physics, kinetics and thermal‑hydraulics disciplines
• Contribute to assessment of steady‑state and transient core performance
• Support evaluation of core‑related fault sequences and plant behaviour
• Assist in development, optimisation and application of analysis methodologies and tools
• Support data evaluation, integration and optimisation of analysis workflows
• Contribute to verification, validation and uncertainty quantification activities
• Produce technical inputs to support safety, environmental and economic performance assessments
• Support delivery of work packages in line with programme plans and governance processes
• Communicate progress, risks and technical outputs effectively
• Work collaboratively with multidisciplinary engineering teams

Requirements

• Academic or early career experience in reactor physics, thermal hydraulics or nuclear engineering
• Understanding of pressurised water reactor (PWR) systems and plant behaviour (or transferable experience from similar reactor technologies)
• Awareness of nuclear safety principles and regulatory expectations, including E3S concepts (ALARP, BAT)
• Experience or exposure to analysis tools used in core design and performance assessment (e.g. CASMO, SIMULATE, VIPRE, CTF or similar)
• Experience or interest in developing analysis tools or scripts (e.g. Python)
• Understanding of engineering analysis methods and data handling
• Awareness of software development or quality assurance processes (desirable)
• Ability to plan and deliver technical tasks within agreed timescales
• Strong problem‑solving, analytical and organisational skills
• Clear written and verbal communication skills
• Ability to work effectively within a team and collaborate across disciplines

Tech Stack

• Python

Benefits

• Bonus – Performance‑related target opportunity up to 12.5%
• Benefits Allowance – £2,200 per annum for a bespoke package
• Pension – 12% employer and 6% employee contributions
• Holidays – 28 days (+ public holidays) with the ability to buy or sell up to 4 days
• Private Medical Insurance – BUPA single cover
• Life Assurance – 6× pensionable pay
• Home Office Support – £250 one‑off payment for new starters