Job Description

Description

The Billing Manager is responsible for overseeing the accurate and timely generation of customer invoices across the Nasstar service lines

The ideal candidate will be tenacious, highly detail-oriented, and confident in challenging legacy processes that require reengineering to support a scalable, automated finance function.

What Success looks like:

Billing Accuracy -

>98% of invoices issued without error or dispute.

Timeliness -

All invoices issued within agreed billing cycles and SLAs.

Process Efficiency -

Reduction in manual billing tasks and cycle time through automation.

Issue Resolution -

Billing queries resolved within SLA; minimal escalations.

Team Performance -

High engagement, clear development plans, and achievement of KPIs.

Audit Readiness -

Clean audit outcomes with complete billing documentation and controls.

Process Reengineering -

Legacy processes redesigned and replaced with scalable, automated solutions.

Stakeholder Feedback -

Positive feedback from internal teams and external customers

Key Responsibilities

Daily & Month Responsibilities Billing Operations

Lead the day-to-day billing operations, ensuring all customer invoices are accurate, timely, and aligned with contractual terms.
Manage the billing cycle across multiple revenue streams, including recurring services, usage- based billing, and project-based work.
Ensure all billing data is validated and reconciled with service delivery and contract records.

Accuracy & Assurance

Work closely with the Revenue Assurance and Commercial Finance teams to resolve discrepancies and ensure completeness of billing.
Maintain a robust control environment, ensuring audit trails and documentation are complete and compliant.
Monitor billing KPIs and proactively address root causes of errors or delays.

Process Improvement & Reengineering

Identify and challenge inefficient or manual billing processes, proposing and implementing reengineered solutions.
Collaborate with IT, operations, and transformation teams to automate billing workflows and improve data integration.
Support the implementation of new billing platforms or enhancements to existing systems.

Team Leadership

Lead, coach, and develop a team of billing specialists to deliver high performance and continuous improvement.
Set clear objectives, monitor KPIs, and conduct regular performance reviews. Foster a culture of ownership, accuracy, and customer service within the team.

Stakeholder Collaboration

Partner with Sales, Service Delivery, and Customer Success teams to ensure billing aligns with customer contracts and service milestones.
Act as the escalation point for complex billing queries or disputes.


Support the Head of Operational Finance in delivering a scalable, efficient billing function

Annual Responsibilities

Ensure compliance of all accounting standards (UK GAAP & IFRS), internal controls, policies and practices.

Other

Ensure cover for all responsibilities within the team.
Responsible for and support any request for information for audit and other external requirements as necessary.

Skills, Knowledge and Expertise

Essential:

Proven experience in billing, revenue operations, or order-to-cash processes, ideally in a team lead or supervisory role. Strong understanding of billing systems, controls, and revenue recognition principles. Confident in challenging the status quo and driving process change. Strong Excel skills and experience with ERP or billing platforms. Excellent communication and stakeholder management skills. Experience in a technology, telecoms, or managed services environment. Familiarity with usage-based or subscription billing models. Exposure to finance transformation or billing system implementations

.

Other Essentials:Microsoft Dynamics Nav experience Qualified Accountant/Treasury Manager (ACCA, CIMA, ACA, ACT) Experience automating processes to improve efficiencies

Benefits

25 days' holiday (excluding bank holidays) + Your Birthday Off Flexible working - it's important to maintain a work/life balance, as such, we will consider any written request for flexible working Virtual working - we practice what we preach and empower our people to work remotely Top tech - Leading services and solutions aren't just for our clients; we supply best-of-breed software and hardware for all our staff too 4x annual salary life assurance Health cash plan Retail discounts and other perks from major brands

About Nasstar

Nasstar is a cloud service specialist. With an integrated suite of services, we design, implement, and manage multi-cloud solutions, innovative communication tools and high-performance networking to help our customers transform and modernise. Our impressive portfolio of customers in every industry across the globe, are supported by a talented team of technical leads, consultants, Project Managers and everything in between.