Senior Administration Assistant

City of London Near Mansion House and Cannon Street Hybrid working (minimum 4 days in office) £38,500 + bonus + excellent benefitsAre you an experienced, detail-driven Senior Administrative Assistant who thrives in a fast-paced, professional environment where accuracy, discretion, and organisation really matter?This is a high-visibility role supporting senior leadership within a respected, membership-led organisation based in the heart of the City.In this role, you''ll be the backbone of smooth operations - providing comprehensive executive support while playing a key part in membership administration, CRM accuracy, and office management.You''ll work closely with senior stakeholders, juggling diary management, meetings, travel, and briefing packs, while also supporting a structured annual membership cycle, onboarding new organisations, and ensuring first-class member service.This is an ideal opportunity for someone who enjoys variety, responsibility, and being genuinely relied upon.What you''ll be doing:Managing diaries, meetings, events, and travel for senior leadershipPreparing briefing packs and coordinating internal and external meetingsSupporting membership renewals, onboarding, invoicing follow-ups, and CRM data accuracyActing as a key point of contact for member queries and internal coordinationSupporting AGMs, events, and occasional conferencesOverseeing day-to-day office administration and supplier relationshipsWhat will set you apart:Successful experience in a ..... full job details .....