Billing Migration Lead – Technical Specialist

Onecom Ltd.; United Kingdom; Remote; GBP 70,000 - 95,000; Full time

Benefits offered by this job

Holidays: 25 days + bank holidays and

Birthday day off, flexible leave

Pension contribution 9% + 4x salary

Employee awards quarterly & annually

In-House Training Academy

Wellbeing support and dental/eye-care

Job summary

Onecom Ltd. is seeking an experienced Billing Migration & Technical Specialist to lead the migration of billing processes from Tekton to aBILLity. You will act as SME for billing, ensuring accuracy, governance and a seamless customer experience during the transition.

This highly visible role involves collaboration across Finance, Technology, Operations and Product teams to maintain billing integrity, protect revenue and support a critical transformation programme. UK-based and onsite.

Qualifications

• Experience migrating billing platforms in telecoms or SaaS environments.
• Hands-on with aBILLity billing systems.
• Strong understanding of billing logic, tariffs, recurring and usage charges, discounts and invoice cycles.

Responsibilities

• Analyse and document existing Tekton billing processes, ratings, discounts, credits and invoicing logic.
• Translate legacy billing logic into future-state configurations within aBILLity.
• Support data mapping, cleansing, transformation and migration readiness activities.
• Lead billing validation, reconciliation, parallel-run testing and user acceptance testing.
• Identify migration risks, billing gaps and process improvements, driving issues to resolution.
• Collaborate with technical teams, business analysts, operations and third-party suppliers.
• Produce documentation covering migration rules, testing outcomes, controls and handovers.
• Support cutover planning, go-live activities and post-implementation hypercare.

Skills

Billing migrations

aBILLity system knowledge

Billing logic & tariffs

Finance stakeholder collaboration

Data analysis & rule tracing

Documentation & communication

Job description

Onecom Ltd. is seeking an experienced Billing Migration & Technical Specialist to lead the migration of billing processes from Tekton to aBILLity. You will act as SME for billing, ensuring accuracy, governance and a seamless customer experience during the transition.

This highly visible role involves collaboration across Finance, Technology, Operations and Product teams to maintain billing integrity, protect revenue and support a critical transformation programme. UK-based and onsite.