About this role
L3 Support – VAS Engineer Experience: 10–15 years of relevant experience in VAS/Telecom Domain Key Responsibilities Act as the final technical escalation point (Tier-3) for complex incidents, deep-dive investigations, and platform-level problems across all VAS systems. Lead advanced troubleshooting and diagnostics , including log-level, protocol-level, API-level, and infrastructure-level analysis. Perform system-level health checks , capacity assessments, performance tuning, and optimization of VAS platforms. Drive end-to-end Root Cause Analysis (RCA) with detailed corrective and preventive actions (CAPA) for major incidents. Own and guide Major Incident Resolution in collaboration with Tier-2, Tier-1, cross-functional teams, and OEM/vendor engineering teams. Design, review, and improve technical processes, SOPs, automation scripts, and knowledge articles for Tier-1 and Tier-2 teams. Provide expert-level support for network configurations, platform integrations, upgrades, expansions, and deployment of new VAS features. Review and maintain platform architecture documents , high-level/low-level designs, and configuration standards. Lead change management , including impact analysis, risk assessment, validation planning, and approval. Coordinate with vendors, R&D, product engineering, and OEM support for bug fixes, patches, enhancements, and platform improvements. Ensure SLA compliance , service uptime, system resilience, and proactive monitoring enhancements. Drive automation, observability improvements, and efficiency initiatives across VAS nodes. Provide advanced guidance on security hardening , vulnerability remediation, compliance implementation, and platform audits. Mentor Tier-1 and Tier-2 engineers through technical knowledge transfer and capability building. Qualifications & Technical Skills Bachelor’s degree in Computer Science, Electronics, Telecommunication, or equivalent. Deep expertise in VAS platforms: Mobile Voicemail, MMSC, SMSC, Tele-Messaging, USSD/USSDGW, SES, NELS, CBC, SIM OTA, Device Manager, EIR, eSIM , and other operator VAS components. Strong understanding of Telecom VAS architecture , SS7/SIGTRAN, SMPP, SIP, Diameter, MAP/CAP, HTTP/REST/SOAP, and related telecom protocols. Hands-on expertise in platform maintenance, advanced troubleshooting, performance optimization, capacity planning, and system tuning . Experience with application support , deployment of releases, patches, hotfixes, and upgrades in production/live environments. Strong Linux administration skills including clustering, HA, load balancing, system performance tuning . Working experience with WebServers (Apache, Tomcat, JBoss) and application hosting frameworks.