The Role
Dennis Johns Service Group is looking for an experienced Electrical Authorised Person (AP) to join our growing Electrical Infrastructure Department.
This is not a standard electrical maintenance role.
We work across critical and technically demanding environments including hospitals, universities, medical research facilities, data centres, high-rise buildings and critical commercial sites.
The successful candidate will support the safe operation, maintenance and management of our clients' electrical infrastructure, working alongside our Technical Management, SAP/AP team, engineers, specialist contractors and clients.
Key Responsibilities
The role will include:
Undertaking LV AP duties and, where suitably qualified and experienced, HV AP duties
Electrical switching, isolation and safe systems of work
Preparing and reviewing switching schedules and isolation procedures
Issuing and receiving electrical safety documentation where authorised
Supporting planned shutdowns and Black Building scenarios
Supporting LV/HV maintenance and electrical infrastructure works
Working with generators, UPS, ATS and standby power systems
Reviewing RAMS and technical documentation
Carrying out technical site surveys
Identifying defects, operational restrictions and electrical risks
Providing technical support during faults and emergency callouts
Producing clear reports, switching documentation and client correspondence
Liaising with clients, engineers, contractors and facilities teams
Experience & Qualifications
Applicants should have:
Recognised electrical apprenticeship or equivalent qualification
BS th Edition
Current or previous LV Authorised Person experience
Experience with electrical switching, isolation and safe systems of work
Good knowledge of LV switchboards and distribution systems
Ability to understand electrical drawings and single-line diagrams
Good understanding of RAMS and electrical risk management
Strong fault-finding and technical problem-solving ability
Good computer literacy, including Microsoft Word, Excel, Outlook and Teams
Full UK driving licence
Emergency first aid at work
Desirable experience includes:
HV AP experience, C&G 2391, IOSH/NEBOSH, manufacturer-specific switchgear training and experience with generators, UPS, ATS or HTM 06 environments.
Out-of-Hours Working
Due to the nature of critical infrastructure, electrical shutdowns, switching and maintenance frequently need to be completed outside normal working hours.
Applicants must therefore be willing to undertake planned evening, night and weekend working, together with occasional emergency callout support.
Where possible, planned works will be organised in advance and shared across the team. However, out-of-hours working is an essential requirement of this position.
What We're Looking For
We are looking for someone who is technically capable, safety focused and comfortable taking responsibility as an Authorised Person.
You should be able to remain calm during faults and shutdowns, follow agreed switching procedures, challenge unsafe working practices and communicate confidently with clients, engineers and management.
Above all, we want someone who takes electrical safety seriously, does not take shortcuts and understands the responsibility that comes with being an AP.
The Opportunity
This is an opportunity to join a developing Electrical Infrastructure Department working across HV/LV infrastructure, critical power systems, shutdown management, electrical maintenance and fault response.
For the right person, there will also be opportunities to continue developing through the AP/SAP structure and take on greater technical responsibility.
Salary and package will be discussed based on experience, qualifications and current level of authorisation.
Pay: £45,000.00-£50,000.00 per year
Benefits:
Company car
Company pension
On-site parking
Private medical insurance
Work Location: In person
Electrical Authorised Person (LV/HV) - Critical Infrastructure in London employer: Job Traffic
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