GH Engage
Senior Critical Electrical Engineer
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Senior Critical Electrical Engineer – Mission Critical Infrastructure
Hemel Hempstead | Exceptional Salary + 15% Bonus + Car Allowance
An excellent opportunity has arisen for a Senior Critical Electrical Engineer to join a leading owner and operator of mission-critical infrastructure, providing technical leadership across complex electrical systems throughout a regional portfolio.
This is a broad technical position spanning live operations, critical electrical infrastructure, projects, resilience, and technical governance. You’ll support operational engineering teams across HV/LV distribution, UPS systems, standby generation, transformers, protection systems, and electrical controls.
The role is well suited to an experienced electrical engineer from a data centre, banking, manufacturing, or similarly high-pressure critical environment. Data centre experience is preferred, but is not essential.
Key Responsibilities
- Provide technical support and escalation across critical electrical infrastructure
- Support HV/LV switching, isolations, and Safe Systems of Work
- Provide technical input during critical incidents and electrical failures
- Carry out electrical capacity, load, and infrastructure calculations
- Support resilience, redundancy, and power-capacity planning
- Review and improve electrical standards, procedures, and maintenance strategies
- Support upgrades, replacement programs, and infrastructure expansion
- Contribute to Root Cause Analysis and technical investigations
- Work closely with operations, engineering, and project teams across multiple sites
- Support commissioning and integrated systems testing where required
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Requirements
- HNC/HND, Degree, City & Guilds electrical qualifications or equivalent
- Strong electrical engineering experience within a critical or high-pressure environment
- Strong working knowledge of HV distribution and LV switchgear
- Practical experience working with switchgear; HV/LV AP status is highly desirable but not essential
- Strong knowledge of UPS, generators, transformers, and electrical distribution
- Understanding of protection systems and coordination/discrimination
- Good knowledge of BS 7671 and UK statutory electrical requirements
- Experience with Safe Systems of Work, Permit to Work, and LOTO
- Ability to carry out electrical load and capacity calculations
- Strong technical fault-finding and incident-management capability
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Experience with commissioning, new-build projects, UPS or generator replacements, major capacity upgrades, multi-site engineering programs, and SOP/MOP/EOP development would all be advantageous rather than mandatory.
Package
- Exceptional basic salary
- 15% annual bonus
- Car allowance
- Private healthcare
- Excellent pension and wider benefits
- Hybrid working
- Significant technical development and career progression
- Opportunity to influence critical electrical infrastructure across a major regional portfolio
The expectation is to be on site around three days per week, with flexibility required around projects, deadlines, and team cover.
Roles
- Senior Electrical Engineer
- Electrical SME
- Critical Electrical Engineer
- Electrical Infrastructure Engineer
- Critical Facilities Engineer
- Mission Critical Engineer
- Data Centre Electrical Engineer
- HV Engineer
- HV/LV Engineer
- HV Authorised Person
- Electrical AP
- Commissioning Engineer
- Electrical Commissioning Engineer
- Electrical Project Engineer
- Electrical Maintenance Engineer
- Switchgear Engineer
- Critical Power Engineer
- Power Systems Engineer
- Electrical Systems Engineer
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