Senior Technical Specialist

The Senior Technical Specialist: Billing & Assurance COE (BACE) is responsible for end-to-end revenue assurance execution and technical oversight across Billing & Assurance environments.

The role ensures accuracy, completeness, and integrity of billing and revenue processes through the design, execution, and continuous enhancement of assurance controls. The incumbent acts as a technical subject-matter expert, driving advanced data analysis, root-cause investigation, and revenue leakage mitigation, while supporting both operational delivery and strategic decision-making.

The role requires advanced SQL capability, deep understanding of telecom billing architectures, and strong stakeholder engagement across Nexio and client environments.

Revenue Assurance & Leakage Management

• Execute end-to-end revenue assurance activities across Billing & Assurance billing domains.
• Identify, investigate, quantify, and remediate revenue leakage risks.
• Design, implement, and maintain preventive and detective assurance controls.
• Drive recovery initiatives and track financial impact of identified issues.

Control Management & BAU Execution

• Own BAU execution and monitoring of assurance control frameworks.
• Ensure controls operate consistently across systems, products, and billing cycles.
• Partner with DevOps and IT teams to automate assurance controls where feasible.

Data Analysis & Technical Execution

• Perform advanced data extraction, validation, and analysis using Oracle / Teradata SQL.
• Develop and maintain scripts to support reconciliations, reporting, and investigations.
• Validate data integrity across source systems, mediation, and billing platforms.
• Produce dashboards and reports highlighting trends, risks, and control performance.

Root Cause Analysis & Resolution

• Conduct detailed root-cause analysis on billing mismatches and anomalies.
• Drive cross-functional resolution with IT, Operations, and Finance teams.
• Implement preventative measures to avoid recurrence of issues.

Process & System Improvement

• Analyse business processes and data models to identify risk points.
• Contribute to solution design, prototypes, and enhancements with Data Enablement teams.
• Continuously improve assurance methodologies and tooling.

Stakeholder Engagement & Reporting

• Engage with internal stakeholders and clients to communicate findings and risks.
• Prepare and present assurance insights to senior management.
• Escalate critical issues timeously and track resolution to closure.

Technical Mentorship

• Provide technical guidance and informal mentorship to junior assurance analysts.
• Contribute to capability uplift and knowledge sharing within the Billing CoE.

• Analytical and investigative thinking
• Strong attention to detail
• Accountability and ownership
• Stakeholder influence and communication
• Ability to operate independently in complex environments

Matric

Diploma or degree in Information Technology, Computer Science, or related field.

Post graduate qualification in Management, IT or related field advantageous.

7-10 years' relevant experience in:

• Revenue Assurance, Billing Operations, or Financial Control within a similar environment.
• Advanced SQL-based data analysis and investigations.
• Complex, multi-system billing landscapes.
• Knowledge and understanding of Telecommunications business operations and in-depth technical (order management) capabilities.
• SQL Advanced Certification and experience Essential (i.e. Oracle PL/SQL / T-SQL / Informix).
• Knowledge and experience of RA / BA Operations with Telecom Operator.
• Experience in financial and/or operational auditing / investigations methodologies and tools.
• Experience in business process analysis, modelling and re-engineering.
• Knowledge of IT or system audit and data analysis experience.
• Siebel and other SRM related systems experience.
• Strong analytical and technical abilities.
• Knowledge of Product Development Processes.
• Advanced computer skills with Microsoft Office Suite.