Lead Engineer / Technical Lead

Key responsibilities Act as the highest level of technical escalation (L3) for incidents raised against the Nokia FlowOne platform and its integrations. Perform root cause analysis on complex production issues — provisioning failures, orchestration errors, and service activation defects across FlowOne modules. Troubleshoot cross-system integration issues between FlowOne and upstream/downstream network elements: HSS/HLR, PCRF, OCS/billing platforms (Matrixx, Aria), and SIM/IMSI provisioning systems. Diagnose resource allocation failures between FlowOne and Nokia Unified Inventory (UIV) — e.g. incorrect or unavailable port, bandwidth, or equipment records blocking service activation. Analyze Diameter protocol traces (S6a, Gx, Gy/Ro, Cx/Sh) to isolate provisioning sync issues, unknown-subscriber errors, and related result-code failures. Own and drive resolution of P1/P2 incidents impacting customer-facing services such as IMSI provisioning, activation, and data/voice service delivery. Coordinate with Nokia vendor support and engineering teams on platform-level bugs, patches, and escalations. Review orchestration workflows, catalog configurations, and activation rules within FlowOne to identify systemic defects. Build and maintain runbooks, a known-error database (KEDB), and troubleshooting guides for L1/L2 teams. Monitor system health via Grafana/Elasticsearch dashboards to proactively identify error spikes and provisioning failures before they escalate. Participate in a rotational on-call schedule to support 24x7 production operations. Support problem management — identify recurring issues and drive permanent fixes with engineering and vendor teams. Review and validate changes and patches prior to production deployment as part of the change management process.

Key responsibilities Act as the highest level of technical escalation (L3) for incidents raised against the Nokia FlowOne platform and its integrations. Perform root cause analysis on complex production issues — provisioning failures, orchestration errors, and service activation defects across FlowOne modules. Troubleshoot cross-system integration issues between FlowOne and upstream/downstream network elements: HSS/HLR, PCRF, OCS/billing platforms (Matrixx, Aria), and SIM/IMSI provisioning systems. Diagnose resource allocation failures between FlowOne and Nokia Unified Inventory (UIV) — e.g. incorrect or unavailable port, bandwidth, or equipment records blocking service activation. Analyze Diameter protocol traces (S6a, Gx, Gy/Ro, Cx/Sh) to isolate provisioning sync issues, unknown-subscriber errors, and related result-code failures. Own and drive resolution of P1/P2 incidents impacting customer-facing services such as IMSI provisioning, activation, and data/voice service delivery. Coordinate with Nokia vendor support and engineering teams on platform-level bugs, patches, and escalations. Review orchestration workflows, catalog configurations, and activation rules within FlowOne to identify systemic defects. Build and maintain runbooks, a known-error database (KEDB), and troubleshooting guides for L1/L2 teams. Monitor system health via Grafana/Elasticsearch dashboards to proactively identify error spikes and provisioning failures before they escalate. Participate in a rotational on-call schedule to support 24x7 production operations. Support problem management — identify recurring issues and drive permanent fixes with engineering and vendor teams. Review and validate changes and patches prior to production deployment as part of the change management process.

Required skills & experience Hands-on experience with Nokia FlowOne (Design Hub, OrderHub, Service Order Management & Activation, Service Catalog) is required. Hands-on experience with Nokia Unified Inventory (UIV) is required — including resource/inventory data modeling and troubleshooting resource allocation issues. Strong understanding of telecom provisioning and