Principal/Senior Mechanical Engineer - Nuclear

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

Job summary

A leading engineering organisation in the UK nuclear sector is seeking a Principal/Senior Mechanical Engineer to oversee the design and integration of powder handling systems. This role offers the chance to work on major projects, ensuring the effective management of hazardous materials in a safe engineering environment. The position promotes collaboration and technical excellence in one of the industry's most critical areas, with multiple roles available in a hybrid work setting.

Qualifications

• Proven expertise in bulk solids or powder handling systems.
• Experience in highly regulated sectors, ideally nuclear.
• Ability to produce and review complex technical documentation.

Responsibilities

• Lead the design and review of powder handling systems.
• Apply engineering standards and nuclear safety principles.
• Collaborate with multi-disciplinary teams on projects.

Skills

Powder handling systems

Nuclear safety principles

Technical documentation

Collaboration with interdisciplinary teams

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.