Senior EC&I Engineer

Senior EC&I Engineer

Location: Reading/ Hybrid - 2 days on site every fortnight
Engagement: Long-Term Contract
IR35 Status: Outside IR35
Security Clearance: SC or DV

The Opportunity

We are seeking an experienced Senior EC&I Engineer to join a high-performing engineering team delivering complex, safety-critical projects across the UK nuclear sector.

This is a long-term contract opportunity outside IR35, offering the chance to work on technically challenging programmes spanning design, manufacture, installation and commissioning. You will play a pivotal role within a multi-disciplinary design environment, contributing to projects across the full lifecycle - from early concept through to commissioning and handover.

If you are motivated by solving complex engineering problems in highly regulated environments, this role offers both technical depth and long-term stability.

The Role

As a Senior EC&I Engineer, you will lead and deliver EC&I design activities across nuclear projects. Working closely with Integration and Project Managers, you will take ownership of delegated equipment and systems design, ensuring compliance, safety and technical excellence throughout.

You will be responsible for producing high-quality engineering documentation and ensuring designs meet programme, budget and regulatory requirements.

Key Responsibilities

EC&I Design & Delivery

• Produce EC&I design concepts and detailed designs including:

  • Single Line Diagrams (SLDs)

  • Block Cable Diagrams (BCDs)

  • Cable schedules

  • System layouts

• Develop control system hardware and software designs

• Produce Functional Safety documentation in accordance with BS EN 61508 & 61511

• Prepare and maintain LTQR / Technical Files in line with Quality Management Systems

• Author and review:

  • Functional Design Specifications (FDS)

  • System Interface Design Documents (SIDD)

  • Functional Safety Plans

  • Basis of Design and substantiation reports

  • Calculation reports

• Produce commissioning documentation (FAT, SAT)

• Support and witness commissioning activities

• Generate EC&I technical specifications

• Review in-house and subcontractor drawings

• Manage and technically oversee subcontract suppliers

Engineering & Compliance

• Ensure designs comply with relevant British and European standards

• Address operability, maintainability and safety within all design outputs

• Demonstrate mitigation of technical risks through formal design justification

• Produce manufacturing-ready information (drawings, specifications, work instructions)

• Interpret and produce EC&I drawings using AutoCAD

• Contribute to internal design reviews and client submissions
  
  

Technical Requirements

Essential:

• Strong EC&I design experience within highly regulated industries

• Electrical systems design experience

• Low voltage control gear knowledge

• Control systems design

• Ability to produce structured technical documentation

• Experience compiling design and engineering documentation for approvals

Highly Desirable:

• Functional Safety experience (BS EN 61508 / 61511)

• Safety interlock design

• HVAC control systems experience

• Nuclear sector experience
  
  

Qualifications

• Degree, HNC or equivalent in a relevant Engineering discipline

• IOSH Managing Safely or Level 2 Health & Safety (or equivalent)

• SC or DV clearance
  
  

What We’re Looking For

• A technically strong and detail-oriented engineer

• Confident working autonomously within a multi-disciplinary team

• Strong communicator with the ability to present technical solutions clearly

• Committed to maintaining professional and technical competence through CPD

• Comfortable operating in high-integrity, safety-critical environments

If you are a Senior EC&I Engineer seeking a long-term, outside IR35 contract within a technically demanding environment, we would welcome your application.