Accounts Receivable - Senior Accountant (m/f/d)

Reliable numbers. Strong customer relationships. Healthy cash flow. At IronMaxx, we develop sports nutrition and functional food products for customers across e-commerce, Amazon, supermarkets, discounters, drugstores and fitness retailers. As an Accounts Receivable Accountant , you help ensure that customer invoices, incoming payments and outstanding balances are accurately recorded and consistently followed up. Working closely with Sales, Customer Service and Claims, you contribute to reliable financial data and support our continued growth.

Accounts Receivable & Customer Accounts Manage the day-to-day accounts receivable accounting and maintain accurate customer accounts Check and post customer invoices, credit notes and incoming payments Allocate payments to outstanding invoices and investigate unallocated receipts Reconcile customer accounts and clarify differences with customers and internal departments Monitor outstanding balances, payment deadlines and overdue receivables Prepare reminders and follow up on overdue payments in coordination with the relevant teams Identify customer deductions, short payments and disputed balances, and coordinate their clarification with Claims, Sales and Customer Service Ensure approved credit notes and claim resolutions are correctly reflected in the accounts Maintain customer master data and document account reconciliations and open cases Closing, Reporting & Process Improvement Support monthly and annual closings through reconciliations and receivables schedules Prepare accounts receivable ageing reports and provide visibility on overdue and disputed balances Support the assessment of doubtful receivables and the preparation of allowances and write-offs for approval Provide information on expected customer receipts to support liquidity planning Collaborate with colleagues on intercompany receivables and reconciliations where required Help improve and standardise accounts receivable processes Actively contribute to digitalisation and automation in accounting Completed commercial or tax-related vocational training, ideally with further qualifications in accounting At least five years of relevant experience in accounts receivable or financial accounting, including substantial hands-on AR responsibility Experience reconciling customer accounts, allocating payments and resolving outstanding balances independently Ideally, experience with retail, FMCG, e-commerce or high-volume customer accounts Familiarity with customer deductions, credit notes and disputed payments Confident use of ERP systems; SAP experience, ideally SAP Business One, is an advantage Very good Excel skills and a sound understanding of financial accounting Structured, accurate and proactive working style Clear communication and persistence when following up with customers and internal teams Very good German and good English, both written and spoken Openness to change and motivation to improve processes