Mobile Billing Specialist
Birmingham (2 days per week in office with flexibility)
Full-time | Permanent
(Internal Job Level Reference : Senior Associate)
About the RoleWe’re looking for a highly organised and detail-driven Mobile Billing Specialist to join our growing team. This role sits at the heart of the mobile operation, co-managing day-to-day billing activities across internal and external systems.
Working in a fast-paced environment, you’ll collaborate closely with account managers, provisioning teams, suppliers, and wider billing teams to ensure billing accuracy, efficiency, and continuous improvement. This is a fantastic opportunity to build deep expertise across billing systems, supplier management, and cross-functional operations.
Key Responsibilities
- Manage and respond to queries within the billing mailbox, ensuring timely and professional communication
- Perform weekly bill run checks, identifying and resolving issues such as unallocated usage, missing services, and incorrect data
- Review Profit & Loss accounts to identify billing anomalies, rating errors, and revenue opportunities
- Support the monthly billing cycle, ensuring all supplier files are processed, services allocated, and products correctly mapped
- Manage tariffs and bolt-ons, including creating new tariff sets and retiring legacy ones
- Work closely with internal stakeholders and external suppliers to resolve billing queries and discrepancies
- Support billing migrations linked to mergers and acquisitions activity
- Verify supplier billing accuracy and raise/chase credits where needed
- Ensure adherence to regulatory and compliance requirements
- Suggest and implement process improvements to enhance efficiency and accuracy
- Assist with ad-hoc billing projects as required
Requirements
- Strong ability to prioritise and manage a busy workload with competing deadlines
- Excellent organisation and time management skills
- Confident communicator, both written and verbal
- Highly analytical with exceptional attention to detail
- Ability to work independently and make sound decisions
- Strong Excel skills, including VLOOKUPs and Pivot Tables
- Reliable, punctual, and proactive approach
Desirable Skills
- Previous experience in a billing role
- Experience within the mobile or telecoms industry
- Familiarity with billing platforms or CRM/database systems
- Experience working with internal and external billing systems
Benefits
- Clear progression pathways with opportunities to advance within a growing organisation.
Skills Required
- Strong ability to prioritise and manage a busy workload with competing deadlines
- Excellent organisation and time management skills
- Confident communicator, both written and verbal
- Highly analytical with exceptional attention to detail
- Ability to work independently and make sound decisions
- Strong Excel skills, including VLOOKUPs and Pivot Tables
- Reliable, punctual, and proactive approach
- Previous experience in a billing role
- Experience within the mobile or telecoms industry
- Familiarity with billing platforms or CRM/database systems
- Experience working with internal and external billing systems
What We Do
Welcome to Focus Group. Established in 2003, we’re proud to be one of the UK’s leading independent providers of essential business technology. Here to take care of all your telecoms, IT and connectivity services. This means everything in one place, one point of contact and one bill to cover everything you need. SME or global enterprise business; public sector, service sector or charity…whatever your size, shape or service, we’ll take the time to get to know your business and deliver the technology to fit the bill. Our teams are experts in their field; passionate about finding the right solutions for you and committed to ensuring your business runs like clockwork. We’re by your side to keep your business phone system at the top of its game, your IT optimised, your data secure, your teams connected and your customers happy. At all times. Leaving you free to focus all your energy on the important stuff. Like growing your business. Telecoms | Mobile | Connectivity | IT solutions | Cyber security | Energy Let’s connect. Let’s grow.
