Senior EC&I Engineer - Electrical Infrastructure

Senior Electrical, Control & Instrumentation Engineer

Leading Engineering Solutions Provider | Hybrid | Long-term Contract | Outside IR35 | Competitive Rate | Current SC Clearance Required | Electrical Infrastructure Experience Essential

The Opportunity

We're recruiting a Senior Electrical, Control & Instrumentation (EC&I) Engineer to join a leading defence engineering solutions provider. You'll deliver EC&I design across complex defence infrastructure projects, bringing substantial experience in electrical systems design from either critical infrastructure environments (datacentres, utilities, healthcare facilities) or defence and nuclear backgrounds.

Contract Details: Outside IR35 | Competitive rate | Hybrid working (2 days on-site every fortnight) | 9-day working fortnight | Current SC clearance essential

This role suits experienced EC&I professionals who understand how to design robust electrical systems in demanding, highly-regulated environments. You'll work on projects ranging from new-build facilities through to refurbishments and upgrades, with responsibility for the full spectrum of electrical design disciplines from low voltage through to high voltage, control systems, fire safety integration, and BIM coordination.

What You'll Be Doing

Electrical & Control Systems Design

Lead EC&I design across multiple disciplines: low voltage, high voltage, lighting, fire alarm and security systems
Design standby generation, UPS systems, and control instrumentation
Develop Building Management Systems (BMS) and integrated control solutions
Produce detailed electrical designs, drawings and specifications in accordance with British and European standards
Perform design reviews and sign-off on deliverables
Ensure integration with existing infrastructure and networks
Infrastructure & Technical Delivery

Lead design on new builds, refurbishments, upgrades and temporary installations
Manage structured cabling, data distribution and integration with existing networks
Conduct surveys and site assessments to inform design decisions
Attend Factory Acceptance Tests (FATs) and support commissioning activities
Provide construction and commissioning support on-site as required
Manage technical handover and documentation
Compliance & Quality

Ensure all designs meet defence sector requirements and security standards
Maintain compliance with Health, Safety and Environmental regulations
Support quality assurance processes and project reviews
Ensure all work aligns with contract requirements and client expectations

About You

Essential Experience & Qualifications

Current SC (Security Clearance) -you must hold valid clearance to be considered
Minimum 8-10 years' EC&I design experience in complex infrastructure environments
Proven background in one or more of: datacentre design, critical infrastructure (utilities, healthcare, power systems), defence sector, or nuclear facility design

Expert-level knowledge of electrical systems design across multiple disciplines:

Low and high voltage design
Control systems and instrumentation
Lighting design and integration
Fire safety and security system integration
Standby generation and UPS systems
BMS and building automation
Structured cabling and data distribution

Technical competency in:

British and European electrical standards (BS 7909, BS 7671, BS EN 50480, etc.)
Design software (AutoCAD, Revit, or similar)
BIM coordination and clash detection
Survey and site assessment techniques

Project delivery experience including:

Design reviews and technical sign-off authority
Factory Acceptance Testing (FAT)
Construction and commissioning support
Contract and supplier management
Stakeholder management on complex projects

Professional qualifications:

Degree in Electrical Engineering or equivalent
Chartered Engineer status (CEng) or equivalent professional standing preferred
IOSH or equivalent H&S qualification desirable

Desirable

Experience in defence or nuclear sector environments
Background in datacentre design transitioning to defence/infrastructure
Experience with critical infrastructure resilience and redundancy design
Knowledge of security and access control system integration
Experience with integrated design management and BIM protocols
Dispute resolution or claims management experience
Team leadership and resource management at senior level
Security Clearance

Current SC (Security Clearance) is essential. You must be able to demonstrate active, valid clearance at the point of application.

The Role in Practice

You'll work on a hybrid basis with 2 days on-site every fortnight, working a 9-day fortnight pattern. This is a senior technical role with genuine design authority and responsibility for complex electrical infrastructure. You'll lead design workstreams, and engage directly with clients and stakeholders on technical matters. The flexible on-site pattern allows you to maintain client relationships and on-site oversight whilst working remotely the majority of the time.

This role suits someone with strong electrical infrastructure design background - particularly from datacentre or utilities environments, or those with existing defence/nuclear sector experience. The key is understanding how to design resilient, compliant electrical systems in demanding, highly-regulated environments.

Why This Role

You'll be working for a leading defence engineering solutions provider on strategically important infrastructure programmes. This is serious technical work on projects with genuine complexity and stringent requirements. You'll have scope to develop deeper expertise in defence sector electrical design whilst working with a skilled technical team on high-profile programmes.

The role offers competitive rates for experienced EC&I professionals with current clearance, and the flexibility of hybrid working arrangements