Billing Specialist jobs

About us

Managed247 is a UK Managed Service Provider delivering IT managed services, cloud, connectivity, cyber security and professional services to mid-market businesses across the UK. We operate on a recurring-revenue model underpinned by consumption-based contracts and professional services engagements, and as we scale we need a sharp, commercially-minded finance professional to make sure every pound we deliver is a pound we bill.

Job Summary
This is a high-visibility role sitting at the intersection of Finance, Service Delivery and Commercial. You'll own the end-to-end customer billing cycle and be the person who makes sure contracted allowances, consumed usage, and professional services hours reconcile cleanly every month. You'll work directly with the CFO and partner with account managers, service desk leads and project managers to keep revenue accurate, timely and defensible.

If you enjoy getting under the skin of contracts, spotting leakage before anyone else does, and building the processes that let a growing MSP scale without losing a grip on revenue, this role is for you.

Key Responsibilities

Customer billing and invoicing

• Own the monthly billing run: produce accurate, timely invoices for recurring services, consumption overages, professional services and one-off charges
• Reconcile billing outputs against signed contracts, order forms and change requests before invoices leave the building
• Manage billing queries from customers and account managers, investigating discrepancies and issuing credit notes or re-bills where appropriate
• Maintain the integrity of customer and contract data in the PSA/billing system

Consumption and allowance tracking

• Track customer consumption (licences, seats, storage, backup volume, managed devices, etc.) against contracted allowances and report on under/over-utilisation
• Identify and bill overages in line with contract terms; flag material variances to commercial teams for review
• Work with Service Delivery to ensure telemetry, usage reports and CMDB data feed cleanly into the billing process

Professional services and project revenue

• Reconcile timesheet data and project hours back to contracted allowances, fixed-price SOWs and T&M engagements
• Partner with project managers to ensure accurate WIP, milestone billing and percentage-of-completion reporting
• Highlight scope creep, unbilled time and margin erosion on active projects

Revenue assurance and controls

• Perform monthly revenue assurance checks: contract-to-bill, bill-to-cash, usage-to-bill
• Investigate and resolve revenue leakage; recommend and implement process improvements to prevent recurrence
• Provide clean, well-reconciled billing data to the wider finance team to support month-end close, including basic deferred revenue and accrual inputs (the Financial Controller retains ownership of technical revenue recognition)

Reporting and business partnering

• Produce weekly and monthly reporting on billings, ARR/MRR movements, consumption trends and utilisation
• Provide commentary and insight to the CFO and leadership team on revenue performance
• Support the annual audit with clean, well-documented billing and revenue records

What We're Looking For

Essential

• Demonstrable experience in a billing, revenue, commercial finance or revenue assurance role, ideally within an MSP, SaaS, telecoms or IT services environment
• Strong understanding of recurring-revenue contracts, consumption-based billing and professional services engagement models
• Advanced Excel (pivot tables, XLOOKUP/INDEX-MATCH, SUMIFS, data reconciliation across large datasets)
• Working knowledge of at least one PSA, ERP or billing platform (ServiceNow, Autotask, HaloPSA, NetSuite, Sage Intacct, Xero or similar)
• Meticulous attention to detail paired with the commercial curiosity to ask *why* numbers don't tie
• Confident communicator — able to hold your ground in a conversation with an account manager or service delivery lead about what is and isn't billable
• Part-qualified (AAT Level 4, ACCA, CIMA or ACA) or qualified by experience

Desirable

• Familiarity with contract lifecycle management and order-to-cash automation
• Exposure to Power BI, Power Query or SQL for reporting and data reconciliation
• Experience integrating PSA and accounting systems (e.g. ConnectWise ↔ Xero/Sage)
• Basic exposure to month-end processes, deferred revenue or accruals (you won't own technical revenue recognition, but comfort around it is useful)
• Progress towards AAT, ACCA or CIMA qualification

What you'll get

• Competitive salary of £38,000 – £48,000 depending on experience
• 3% employer pension contribution
• 25 days annual leave plus bank holidays (and buy-and-sell scheme)
• Hybrid working — 2-3 days/month in our Milton Keynes office, the rest from home
• Study support for AAT / ACCA / CIMA (if part-qualified)
• Clear progression path into senior finance roles as the business scales

Job Types: Full-time, Permanent

Pay: £40,000.00-£55,000.00 per year

Benefits:

• Casual dress
• Company events
• Company pension
• On-site parking
• Work from home

Ability to commute/relocate:

• Milton Keynes MK9 1FH: reliably commute or plan to relocate before starting work (preferred)

Application question(s):

• Do you have hands-on experience with a PSA or billing platform such as ConnectWise, Autotask, HaloPSA, Kaseya BMS, ServiceNow, NetSuite, or a similar system?
• How would you rate your Excel skills (pivot tables, XLOOKUP/INDEX-MATCH, large dataset reconciliation)?
• What is your current notice period?

Experience:

• billing in a recurring-revenue environment: 2 years (preferred)

Work authorisation:

• United Kingdom (preferred)

Work Location: Hybrid remote in Milton Keynes MK9 1FH