Credit Control & AR Administrator

London, UK SER Limited Credit Control & AR Administrator Location: West Hampstead, London Salary: Up to £35,000 depending on experience Working Arrangement: Hybrid – 3 days onsite, 2 days remote Contract: Permanent, Full-Time About the Role We are working with a growing technology business that is looking for an experienced Credit Control & AR Administrator to join its finance team. Reporting into the Senior Finance Manager, you'll play a key role in supporting the Accounts Receivable and Credit Control functions, helping to maintain strong cash flow, accurate ledgers and effective financial controls. This is a hands-on role suited to someone who is confident managing credit control from start to finish and is comfortable working independently within a small finance team. Key Responsibilities Proactively chase outstanding customer payments by phone and email. Manage and resolve customer payment disputes and queries. Take ownership of the credit control process from start to finish. Collect historic and aged debt and support bad debt reviews and escalations. Produce aged debt and bad debt reports for internal stakeholders. Process and reconcile Direct Debit collections, amendments and cancellations. Allocate customer receipts against sales invoices and investigate unallocated cash. Maintain clean, accurate and well-managed AR ledgers. Support the clean-up and resolution of historic ledger balances. Investigate and resolve billing and payment discrepancies. Post cash transactions and complete regular bank reconciliations. Manage finance mailboxes and respond to queries in a timely manner. Review, post and reconcile credit card transactions and follow up on missing documentation. Escalate unreconciled items in line with internal controls and month-end deadlines. About You We're looking for someone who is proactive, organised and confident managing credit control independently. You'll ideally have: Proven experience managing credit control end to end. Experience working in a complex environment, such as multiple entities, currencies, high transaction volumes or varied billing terms. A proven track record of collecting historic or aged debt, ideally with measurable results. Strong communication skills and the confidence to deal with customers and internal stakeholders at all levels. Excellent Excel and general IT skills. A strong eye for detail and an investigative, problem-solving mindset. The ability to work independently while reporting into a Senior Finance Manager. Excellent organisation and time-management skills. Resilience and professionalism when handling difficult customer conversations. A proactive approach to improving processes and challenging inefficient ways of working. Experience within the IT or SaaS sector would be advantageous, and knowledge of Oracle NetSuite would be desirable. What's on Offer? Salary up to £35,000, depending on experience. Hybrid working – 3 days onsite and 2 days from home. Permanent, full-time position. Opportunity to join a growing technology-focused business. A varied and hands-on finance role with genuine ownership. The opportunity to contribute to process improvements and the wider finance function. Interested? The client is looking to fill this opportunity immediately, so please apply ASAP or feel free to drop me an email with any questions to owen @ serlimited . com. SER-IN