Senior Mechanical Engineer

Overview

As a Senior Mechanical Engineer at Assystem, you will contribute to complex nuclear projects from Derby, shaping reliable and safe mechanical designs. You will work within a cross-functional team to deliver technically sound solutions, assess performance and safety, and document substantiation and reporting. The role emphasizes risk management, budget awareness, and continuous learning to stay at the forefront of nuclear engineering. This is an opportunity to impact high-stakes infrastructure and join a global, diverse engineering community that supports mission-critical initiatives.

Pay / Benefits

• employee assistance programme with mindfulness and wellbeing resources
• confidential support line 24/7
• discount vouchers for days out and restaurants
• eye test and glasses vouchers
• cycle to work scheme
• free flu jabs

Responsibilities

• Identify, formulate, and produce effective solutions to emerging problems
• Evaluate final product’s overall performance, reliability, and safety
• Alter and modify design to meet customer requirements
• Estimate budget and scope of project
• Management of Risk and Opportunity
• Prepare product reports and documentation
• Engage in lifelong learning and develop new theories or methods

Key requirements

• Minimum of 5 years’ experience within the nuclear sector
• Understanding of mechanical design, safety case, operation, precision, cleanliness requirements, damage prevention and LfE capture
• Previous experience with Technical Document Authoring, Substantiation and Presenting
• Understanding of Nuclear Health & Safety i.e. Safety case requirements (Safety Functional Requirements, Engineering Schedules and criticality prevention)
• Previous exposure to Chemical Plant, Gloveboxes and associated processes; familiarity with Welding, NDT techniques is advantageous
• Familiarity with PLM systems (Teamcentre or similar)
• Knowledge of engineering analysis tools (MathCAD, ANSYS, ABAQUS or similar)
• BEng or similar professional qualification in an engineering related field

• Lifelong learning
• Cross-functional collaboration
• Problem-solving orientation
• Mechanical design
• Safety case development
• Technical Document Authoring

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