Senior LV / Authorised Person (AP) Tester – £60,000–£68,000 package London & South East | Large projects (critical power & commercial) | Site-based | Immediate start Lead LV testing and energisations on major sites. You’ll be the senior, hands-on tester on the ground—running small test teams, controlling permits and isolations, and securing clean, witnessable handovers to programme. What you’ll deliver * Manage and mentor up to four LV test operatives; plan workfronts and access to meet programme. * Execute and verify LV testing/commissioning to ESSW, BS 7671 & GN3; complete DB/earth bar checks, sub-mains/finals/earthing/modular wiring schedules. * Keep electronic test folders and dashboards current (results uploaded within 24 hours); maintain gateway trackers and lockable schematics. * Inspect switchgear and installation methods; check protective-device settings against selectivity studies and record torque checks. * Control requests for power and isolations; manage LOTO, key control and permit issue (under AP oversight). * Raise/close snags and non-conformances; support client witnessing and evidence for NICEIC certification. * Carry out emergency-lighting testing and verification to BS 5266. What you know cold * LV distribution, switchgear, UPS, busbar, modular wiring, controls/monitoring and ATS interfaces. * UK electrical safety and compliance: BS 7671 (incl. inspection & testing), GN3, BS 5266, CDM, permits and LOTO. * Turning parallel test activities into a controlled, auditable process that protects programme and quality. What you’ll need * 3 years’ site-based LV testing/commissioning experience; senior tester or AP(LV) responsibility on large MEP/critical projects. * C&G (or equivalent) Inspection & Testing and BS 7671 training; 2391 (or equivalent) desirable. * Strong documentation discipline (ITPs, test sheets, trackers, snag/close-out) and clear, confident comms with project teams. * Current ECS/CSCS and full UK driving licence; flexible for occasional out-of-hours works. Package & basics * £60,000–£68,000 base comprehensive benefits (private healthcare, life assurance, enhanced holiday, pension, wellbeing support). * Internal AP appointment and ongoing technical training provided