Mechanical Engineer – Nuclear

Overview

As a Mechanical Design Engineer at ALTEN, you own engineering work from concept to detailed design and manufacture. You will collaborate with project, commercial, and engineering teams to deliver robust solutions that support project delivery and bids. Expect travel across UK nuclear sites and to France, and a role focused on regulated, high-precision environments. You will contribute to continuous improvement and capability development within a global engineering community. This opportunity appeals to engineers who shape technical outcomes and advance sustainable transformation.

Pay / Benefits

• Private Medical Insurance
• Cycle & Tech Scheme
• Employee assistance programme
• Life insurance & Pension Scheme
• Flexible working (role dependent)
• Team events and social gatherings

Responsibilities

• Produce engineering designs and accompanying technical documentation
• Create concept, 3D scheme, and detailed SolidWorks drawings
• Perform engineering substantiation and hand calculations
• Review designs for compliance and quality; conduct peer reviews
• Manage day-to-day technical delivery; align with schedules and requirements
• Support tender and commercial inputs with technical interpretations and estimates
• Contribute to capability development and governance in a regulated setting

Key requirements

• 5-9 years of mechanical design experience
• Fluency in French and English
• Strong SolidWorks experience for 3D design and drawings
• Experience producing engineering calculations and substantiation
• Ability to interpret specifications and translate into practical solutions
• Strong problem-solving, analytical, and communication skills
• Experience managing work packages or projects
• Bachelor’s in Engineering (or equivalent)

• Strong communication across languages
• Collaborative mindset in cross-functional teams
• Proactive problem-solving
• SolidWorks (3D design and drawings)
• Engineering calculations and substantiation
• Interpretation of technical specifications

…