Electrical Testing Authorised Person - Data Centres

Location: Heathrow, Slough & Enfield

Contract: Initial 3-month contract

Environment: Critical Facilities / Data Centres

Portfolio: 13 Data Centre sites

The Opportunity

We are looking for an Electrical Authorised Person to join a specialist Critical Facilities engineering team supporting a portfolio of 13 Data Centre sites across Heathrow, Slough and Enfield.

The role will support a major Fixed Electrical Testing programme across live, business-critical environments where uptime, electrical safety and operational resilience are essential.

You will work across the estate supporting the safe operation, isolation and switching of critical HV/LV electrical infrastructure, enabling testing activities to be completed safely and with minimal disruption to live operations.

This is an operational Critical Facilities position rather than a standard electrical installation role. You will work around critical power infrastructure including 11kV distribution, LV systems, UPS, generators, switchgear and associated M&E plant.

Key Responsibilities

• Act as an Electrical Authorised Person across assigned Critical Facilities and Data Centre sites

• Support the safe operation, isolation and switching of HV and/or LV electrical systems

• Enable and support Fixed Electrical Testing activities across the 13-site portfolio

• Prepare, review and execute electrical switching procedures and Standard Operating Procedures (SOPs)

• Issue, manage and cancel electrical safety documentation including Permits to Work and Certificates of Isolation

• Implement and maintain Lock Out / Tag Out (LOTO) procedures

• Review contractor RAMS and ensure work is completed under appropriate Safe Systems of Work

• Oversee specialist electrical testing contractors operating within live critical environments

• Support electrical isolations required for periodic inspection and testing

• Operate critical M&E systems safely and in accordance with site procedures

• Support planned outages, critical maintenance and infrastructure works

• Identify risks and make technical recommendations where required

• Provide concise technical reports following testing, incidents or infrastructure activities

• Ensure testing activities comply with BS 7671 and relevant electrical testing requirements

• Maintain high standards across electrical plant rooms and operational areas

• Participate in Toolbox Talks, hazard reporting and near-miss reporting

• Work closely with site engineering, facilities and specialist vendor teams to maintain operational resilience

Essential Qualifications

• Current Authorised Person status in HV and/or LV electrical systems

• C&G 2391 Inspection & Testing or recognised equivalent

• Current BS 7671 / 18th Edition

• NVQ Level 3 Electrical Installation, recognised City & Guilds qualification or equivalent electrical apprenticeship

• Ability to travel between sites across Heathrow, Slough and Enfield

Job Title: Electrical Testing Authorised Person - Data Centres

Location: London, UK

Job Type: Contract

Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. . Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as \"Allegis Group\"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at

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