Job Title: Senior Billing Specialist
Location: Milton Keynes, Hybrid working (2 days in office per week)
Type: Permanent
Salary Range: £31,450 - £35,000
Key Responsibilities
- Deliver accurate and timely invoicing and credit notes across an assigned billing portfolio, ensuring compliance with contractual, tax, and control requirements.
- Own billing performance, meeting agreed KPIs such as invoice timeliness, right‑first‑time accuracy, backlog reduction, and query resolution.
- Manage complex billing scenarios (e.g. multi‑entity, milestone, recurring and consolidated billing) ensuring correct data, approvals and documentation.
- Investigate and resolve billing queries and disputes, working cross‑functionally to identify root causes and prevent repeat issues.
- Partner with Sales, Operations and Finance teams to unblock billing dependencies, improve cash flow and enhance customer experience.
- Support month‑end and year‑end activities, including cut‑offs, accruals and audit documentation to ensure accurate revenue reporting.
- Maintain strong financial controls, ensuring billing accuracy, audit readiness and compliance with internal policies and external regulations.
- Act as a subject‑matter expert, providing guidance to peers, driving continuous improvement and supporting process standardisation and automation initiatives.
Qualifications
- Proven experience in a senior billing role, ideally within a global or shared‑services environment, handling complex billing processes.
- Strong understanding of contract‑to‑billing processes, financial controls and relevant tax regulations (e.g. VAT/GST).
- Demonstrated ability to deliver against KPIs and performance targets, focusing on accuracy and efficiency.
- Excellent stakeholder management skills, able to collaborate effectively across Sales, Finance and Operations teams.
- Solid analytical skills and attention to detail, with strong Excel capabilities (e.g. pivots and formulas).
- Experience working with financial systems (e.g. SAP or similar ERP platforms) and multi‑currency environments.
- A proactive, resilient and customer‑focused mindset, prioritising workload and delivering under pressure.
Benefits
- Flexible working and 27‑day annual leave.
- Paid sick leave, bank holidays and health insurance.
- Life insurance, pension plan with company contribution and income protection.
- Car allowance (dependent on role).
- Paid maternity, paternity, parental and adoption leave; compassionate and bereavement leave.
- Learning and development opportunities and a wide range of flexible benefits that can be tailored to your lifestyle.
BSI is an Equal Opportunity Employer dedicated to fostering a diverse and inclusive workplace.
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Senior Billing Specialist employer: BSI
BSI is an exceptional employer that champions positive change for both people and the planet, offering a dynamic work culture in the vibrant locations of Covent Garden and Milton Keynes. With a strong commitment to employee growth, BSI provides extensive training opportunities, flexible working arrangements, and a comprehensive benefits package, including generous leave policies and health insurance, ensuring that every team member can thrive while making a meaningful impact on global standards and sustainability.
