Fabric Technician / Maintenance Critical Electrical Engineer (Data Centre / Critical Environment)Location: Sheffield Salary: £27.50 per hour + Overtime and Call-Out Hours: Full-time + On-call rotaThe RoleWe are seeking a highly skilled Critical Electrical Engineer to join our team, supporting mission-critical environments such as data centres, call centres, and trading floors. This role focusses on maintaining uptime, ensuring resilience of critical systems, and delivering rapid response to breakdowns in line with strict SLA requirements.You will play a key role in ensuring the electrical infrastructure and critical plant operate safely, efficiently, and without interruption.Key ResponsibilitiesRespond to breakdown maintenance requests within agreed SLA timesCarry out planned preventative maintenance (PPM) and reactive works on electrical systemsDiagnose and repair faults across power distribution, UPS, CPS, and cooling systemsPerform repairs and maintenance on modular UPS systemsTest and diagnose power quality issues, including harmonic distortion using on-site analysers.Provide emergency response, standby cover, and participate in a call-out rotaEscalate critical or high-risk issues to the Technical Services ManagerRespond effectively to work interruptions, outages, and emergencies in line with operational SLAs.Ensure all maintenance records, compliance logs, and documentation are accurately maintainedAdvise Facilities Management teams on changes or risks within critical ..... full job details .....