We are seeking an experienced and driven Critical Shift Maintenance Technician to join my client's specialist team supporting a high-profile Data Centre environment. This role requires a skilled engineer with strong electrical and mechanical competencies, comfortable working in a fast-paced, mission-critical setting where uptime and reliability are paramount. You will be responsible for maintaining and operating all electrical and mechanical installations, infrastructure, and building services across the data centre, ensuring compliance, safety, and optimal performance at all times. Key Responsibilities: Deliver both electrical and mechanical planned preventative maintenance (PPM) and reactive maintenance across all critical systems and infrastructure. Carry out fault-finding, repairs, and upgrades on key systems including: HV/LV electrical systems UPS & generator systems Cooling systems (CRAC/CRAH units) Chillers, pumps, and HVAC infrastructure BMS, fire alarms, lighting, and power distribution Ensure critical environment operational procedures and escalation protocols are adhered to. Support and coordinate with specialist contractors and vendors on-site. Monitor and maintain building compliance, statutory testing, and site logs. Respond swiftly and effectively to any emergency incidents or alarms. Maintain a strong focus on health & safety, risk assessments, and permit-to-work systems. Provide clear shift handovers and maintain detailed operational records. Key Requirements: Recognised qualifications in electrical or mechanical engineering (City & Guilds/NVQ Level 3 or equivalent). 18th Edition Electrical Wiring Regulations (for electrical candidates). Proven experience working in a critical environment (Data Centres, Banking, Healthcare, or similar). Strong knowledge of both electrical and mechanical systems. HV Authorisation advantageous (training can be provided). Excellent problem-solving skills and ability to remain calm under pressure. Flexibility to work continental shift pattern (days & nights, 12-hour shifts). What's On Offer: Competitive base salary shift allowance. Overtime opportunities. Pension, healthcare, and generous benefits package. Training & development opportunities including upskilling to HV AP status. Work within a leading FM provider in a state-of-the-art critical environment. Randstad CPE values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are more than happy to discuss reasonable adjustments and/or additional arrangements as required to support your application. Candidates must be eligible to live and work in the UK. For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business. skills ability to follow job and safetry instructions,assembling furniture,assigning engineers,assiting contracts manager,attend client meetings,boilers,budgets/ wip management,building services,building maintenance,carpentry,carry out reports,changing lamps,client liaison,cleaning skills,closing down jobs,commercial,compliance,concept 500,concept evolution,contractor management,dealing with client and sub contractors,door closers,electrical maintenance,emergency lighting,fire alarms,general administration,geneva,hanging doors,hanging pictures/ noticeboards,h&s,kpi's,maintaining critical plant,maintenance schedules,manage ppm schedule,maximo,mechanical maintenance,office moves,orangise sub contract labour,oranise permits,organise labour and the procurement of materials and parts,painting and decorating,pipework,planet,p&l responsibility,plumbing,power distribution,ppm,previous cleaning experience,radiators,raising po's,reactive maintenance,reactive & planned maintenance,residential,risk assessments,service charge,showers,sinks,sla's,split systems,supervision of engineers,Team leadership,technical back up,testing and inspection,toilets,unblocking toilets,water treatment,wip reports,woodwork