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Billing Specialist

Make sure every client is billed accurately and on time.

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  • Finance
  • Mid-level · 3+ years
  • Hybrid · Full-time
  • Posted 16 October 2026

About the role

You will prepare and check invoices for our IT and telecommunications services, reconcile usage records, and resolve billing questions. You will keep billing accurate and help protect our revenue.

What you will do

  • Prepare and check monthly client invoices
  • Reconcile usage records with billing and rates
  • Resolve billing questions and disputes
  • Support credit control and chase overdue payments
  • Check for revenue leakage and billing errors
  • Keep billing records and reports accurate

Minimum qualifications

  • Degree or qualification in Accounting or Finance, or equivalent practical experience
  • 3+ years in billing, accounts receivable or credit control
  • AAT Level 3 or above
  • Advanced Excel (pivot tables, lookups) shown in a test
  • Billing in an ERP or billing system
  • English at CEFR C1 or above (IELTS 7.0 or equivalent)

Expert knowledge

  • Usage rating and reconciliation for recurring and usage-based services
  • Revenue assurance: finding and fixing billing leakage
  • Credit control: dunning processes and payment terms
  • VAT on invoices for UK and international clients

Preferred qualifications

  • Telecommunications billing or usage rating
  • Revenue assurance
  • AAT Level 4

Before any offer we verify your certificates, qualifications, references and right to work in the UK. Security roles also need background screening (BPSS) and may need security clearance.

SOWTK is an equal opportunity employer. We welcome applicants of every background and do not discriminate on any characteristic protected by the Equality Act 2010.

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