Principal/Senior Mechanical Engineer - Nuclear

ATTB - The Big Jobsite; Manchester; Hybrid; GBP 50,000 - 80,000; Full time

Job summary

A leading engineering organization is seeking a Principal/Senior Mechanical Engineer specializing in bulk solids and powder handling systems for significant nuclear projects in the UK. This hybrid permanent position offers a unique opportunity to engage in safe management of hazardous materials while leading multi-disciplinary engineering teams.

Qualifications

• Strong experience with bulk solids and powder handling systems.
• Experience in nuclear or highly regulated environments is preferred.

Responsibilities

• Lead the design and review of powder handling systems.
• Ensure compliance with engineering standards and safety principles.
• Produce and review technical documentation.

Skills

Bulk solids handling

Powder handling systems

Nuclear safety principles

Education

Degree in Mechanical Engineering

Job description

Job Description

Job Title: Principal/Senior Mechanical Engineer (Nuclear)

Location: Warrington (Hybrid: 3 days onsite, 2 days WFH)

Salary: Competitive

Job Type: Permanent | Full Time

About the Role

iO Associates is currently working with a leading engineering organisation involved in major UK nuclear projects. We're recruiting for a Principal/Senior Mechanical Engineer with expertise in bulk solids or powder handling systems, ideally for nuclear or other highly regulated sectors.

This is a unique opportunity to contribute to the safe and effective management of radioactive or hazardous powdered materials — ranging from fuel fabrication to waste processing — within complex engineering environments. Multiple positions are available.

Key Responsibilities

1. Lead the design, integration, and review of powder handling systems (e.g., hoppers, feeders, pneumatic conveyors, gloveboxes).
2. Apply engineering standards and nuclear safety principles across all design and project stages.
3. Produce and review technical documentation, including calculations, drawings, reports, and risk assessments.
4. Collaborate with multi-disciplinary teams including nuclear safety, process, and systems engineers.
5. Provide engineering oversight to ensure compliance with safety cases and relevant codes.