Senior Billing Specialist

BSI; Milton Keynes; On-site; GBP 31,450 - 35,000; Full time

Benefits offered by this job

Flexible working

27-day annual leave

Paid sick leave

Health insurance

Life insurance

Pension plan

Learning and development opportunities

Job summary

BSI is seeking a Senior Billing Specialist located in Milton Keynes with a hybrid working arrangement. This role involves delivering accurate invoicing, managing complex billing scenarios and working closely across departments.

The ideal candidate has proven experience in senior billing roles and possesses strong analytical skills, alongside a focus on accuracy and efficiency. A competitive salary range of £31,450 - £35,000 is offered, along with benefits like flexible working and health insurance.

Qualifications

• Proven experience in a senior billing role within a global environment.
• Strong understanding of financial controls and tax regulations.
• Ability to deliver on KPIs, focusing on accuracy and efficiency.

Responsibilities

• Deliver accurate invoicing and credit notes across assigned portfolio.
• Manage complex billing scenarios ensuring correct data and documentation.
• Investigate billing queries and work cross-functionally to resolve issues.

Skills

Senior billing experience

Contract-to-billing processes

Stakeholder management

Analytical skills

Excel capabilities

Financial systems expertise

Customer-focused mindset

Tools

SAP or similar ERP platforms

Job description

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.