karthikeyan sivakumar

karthikeyan sivakumar

Telecom Billing & Data Analyst
UAE
Tamil, English
Full-time On-site

About Me

Dynamic and results-driven Telecom Billing & Data Analyst with 12+ years of international experience in telecom operations, BSS/OCS systems, postpaid & prepaid billing, and data integration across UK, India, Africa, and …

Experience

Telecom Product Catalogue Lead

Connect Resource · Dubai, UK
Jul 2026 - Present · 4 months

<p>Designed and implemented postpaid product catalogue with Plintron and Beyond Now systems.</p><p> Developed and deployed Postmaster API workflows using Insomnia API, XML, and JSON, ensuring accurate synchronization between CRM and billing systems.</p><p> Automated catalogue updates and plan provisioning, improving operational efficiency by 40%.</p><p> Currently leading migration support for new MNO with USA AT&T (2025) — managing testing, validation, and process transition.</p><p> Visited the USA (onsite) to coordinate with AT&T technical and product teams for migration execution and UAT validation.</p>

Post-Paid Billing & Tariff Analyst

Lyca Mobile · London, UK
Jul 2024 - Present · 2 years 4 months

<p>Designed and implemented postpaid product catalogue with Plintron and Beyond Now systems.</p><p> Developed and deployed Postmaster API workflows using Insomnia API, XML, and JSON, ensuring accurate synchronization between CRM and billing systems.</p><p> Automated catalogue updates and plan provisioning, improving operational efficiency by 40%.</p><p> Currently leading migration support for new MNO with USA AT&T (2025) — managing testing, validation, and process transition.</p><p> Visited the USA (onsite) to coordinate with AT&T technical and product teams for migration execution and UAT validation.</p>

System Control Supervisor

Lyca Mobile · Aduthurai , Tamil Nadu , India
Jan 2014 - Jun 2024 · 10 years 5 months

<p>Oversaw billing and tariff management across 23+ international markets.</p><p> Implemented Uganda MNO billing system (2019) using Aryagami BSS/OCS, completing tariff and bundle plan creation, charging configuration, and SIM activation flows.</p><p> Built and automated RMS and Repsly internal tool data feeds (2021) for inventory reconciliation and system integration.</p><p> Designed XML and Jasper report scripts to enhance reporting accuracy and reduce manual dependency.</p><p> Partnered with finance and IT teams for dispute resolution, vendor integration, and billing accuracy improvement.</p><p> Supported TPG Australia migration project ensuring seamless transition of tariff and billing modules.</p>

PROJECTS

Beyond now post paid project

lyca
Duration : 09-Sep-2022 - 22-Sep-2026

<p>Postpaid Product Catalogue – Plintron & Beyond Now (2023)</p><ul><li><ul><li>Led creation of a complete product catalogue for postpaid services, integrating Postmaster through Insomnia API calls using XML/JSON.</li><li>Delivered robust backend logic to manage plan hierarchies, bundle dependencies, and provisioning workflows.</li></ul></li></ul><p></p>

Certifications

BE coumputer science and Engineering

Anna University, India · Abiramam , Tamil Nadu , India · 2013

Skills

BSS/OCS Tariff configuration Product catalogue design Insomnia API XML JSON System integration Postmaster development SQL Automation scripting RMS Repsly Reporting Postpaid configuration Prepaid configuration Mediation mapping Rating Invoicing Automation Testing Workflow streamlining Vendor management Project delivery MS Excel PowerPoint CRM/ERP integration tools Jasper Reports SIGOS
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