Our client is an American Law firm, their head office is in New York, and they have additional offices in the rest of the USA, Europe, Asia and Latin America. They have been in London for over 25 years. The London office is ideally suited for Liverpool Street station.They are now looking to hire a Senior Client Account Specialist to join their small billing team. The Senior Client Account Specialist is responsible for successful execution of the billing and collection strategy for their assigned partners or office/practice groups in conjunction with firm best practices as well as in accordance with client requirements. ResponsibilitiesDrive the billing and collection process to ensure accurate and timely invoicing and payment of clients for assigned partners, practice groups, and/or offices.Monitor assigned partner''s monthly aging AR reports and take appropriate action to ensure each invoice is paid on time and in full; direct teams to follow-up on underpayments and help with resolution, as needed.Update key finance reports (e.g., projection amounts, clear and concise billing or AR comments) daily, to ensure timely and quality reporting for Senior Management.Successful handling of more complex billing and ensuring timely and accurate billing and collections process.Follow-up with partners and escalate any billing or collection issues or delays.Respond to billing and AR inquiries Preparation of bills including narrative descriptions, transfers and on account applications, ..... full job details .....