Robert Half is exclusively mandated to appoint a Senior Associate into an investment banking firm based in Mayfair. This is a rare opportunity for someone coming from a Big 4 / Top 10 (Transaction Advisory or equiv) background to step directly into a true front-office investment banking role, with immediate exposure to clients, origination and deal leadership. The Candidate Profile Chartered Accountant (ACA or equivalent)Currently at Big 4 (Transaction Services / Corporate Finance / MandA)Strong transaction experienceAdvanced financial modelling capabilityConfident presentation and client-facing skills You should be someone who could walk into a client meeting tomorrow and operate credibly and independently. Role: Transaction Leadership and Execution Build and own financial models (DCF, LBO, operating models, transaction scenarios)Drive preparation of pitch decks, CIMs, management presentations, and buyer outreach materialsLead diligence coordination and manage data roomsSupport negotiation strategy and transaction structuringOversee analysts and ensure quality control of all materials Direct Client Engagement Serve as a day-to-day point of contact for founders and managementParticipate in client meetings, strategy sessions, and buyer callsPrepare clients for management presentations and investor discussionsTranslate financial analysis into clear strategic recommendations Business Development Support Contribute to pitch materials and strategic idea generationConduct indus