Lead Engineer / Technical Lead

Prodapt; Chennai District; On-site; INR 1,500,000 - 2,200,000; Full time

Job summary

Prodapt is seeking a Senior OSS/BSS Incident Engineer to act as the highest level of technical escalation (L3) for Nokia FlowOne platform incidents and integrations.

You will perform root cause analysis on complex production issues, troubleshoot cross-system integrations (HSS/HLR, PCRF, OCS, Matrixx, Aria), and coordinate with vendor support and engineering teams to drive permanent fixes while contributing to runbooks and knowledge bases.

Qualifications

• Hands-on with Nokia FlowOne (Design Hub, OrderHub, Service Order Management & Activation, Service Catalog).
• Hands-on with Nokia Unified Inventory (UIV) data modeling and troubleshooting resource allocation issues.
• Strong understanding of telecom provisioning and service activation workflows (IMSI/SIM lifecycle).
• Knowledge of Diameter protocol and 3GPP interfaces (S6a, Gx, Gy/Ro, Cx/Sh) and standard codes.
• Experience troubleshooting OSS/BSS integrations across HSS/HLR, PCRF, OCS, and billing platforms (Matrixx or Aria).
• Strong SQL and log analysis skills; familiarity with Elasticsearch, Kibana, Grafana.
• Understanding REST/SOAP APIs and XML/JSON integrations in OSS environments.
• Experience with ITIL-based incident, problem, and change management processes.
• Strong root cause analysis, documentation, and cross-team communication; vendor coordination.

Responsibilities

• Act as highest level of technical escalation (L3) for Nokia FlowOne incidents.
• Perform root cause analysis on complex production issues across FlowOne modules.
• Troubleshoot cross-system integration issues between FlowOne and HSS/HLR, PCRF, OCS/billing, SIM/IMSI provisioning.
• Diagnose resource allocation issues between FlowOne and Nokia UIV.
• Analyze Diameter traces (S6a, Gx, Gy/Ro, Cx/Sh) to isolate provisioning issues.
• Own and drive resolution of P1/P2 incidents impacting IMSI provisioning and service delivery.
• Coordinate with Nokia vendor support and engineering on bugs, patches, escalations.
• Review orchestration workflows and activation rules to identify defects.
• Build/runbooks, KEDB, and troubleshooting guides for L1/L2 teams.
• Monitor system health via Grafana/Elasticsearch dashboards to preempt failures.
• Participate in on-call rotation to support 24x7 production operations.
• Support problem management by identifying recurring issues and driving fixes with engineering teams.
• Review and validate changes/patches prior to production deployment.

Skills

Nokia FlowOne

UIV

Diameter protocol

SQL

Elasticsearch

Kibana

Grafana

REST/SOAP APIs

ITIL processes

Vendor coordination

Tools

Nokia FlowOne tools

UIV

Elasticsearch

Kibana

Grafana

Job description

• 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 escal…
• 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.

Overview

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 escal…
• 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.

Responsibilities

Requirements

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 service activation workflows, including IMSI/SIM lifecycle management.
• Working knowledge of the Diameter protocol and 3GPP interfaces (S6a, Gx, Gy/Ro, Cx/Sh) and their standard result/error codes.
• Experience troubleshooting OSS/BSS integrations across HSS/HLR, PCRF, OCS, and billing platforms such as Matrixx or Aria.
• Strong SQL and log analysis skills, with familiarity in Elasticsearch, Kibana, or Grafana for monitoring and RCA.
• Understanding of REST/SOAP APIs and XML/JSON‑based integrations typical of OSS environments.
• Experience working within ITIL‑based incident, problem, and change management processes.
• Strong root cause analysis, documentation, and cross‑team communication skills, including direct vendor coordination.

Preferred Qualifications

• Nokia FlowOne and/or Nokia Unified Inventory (UIV) certification or formal vendor training.
• Scripting experience (Python or Shell) for automating routine diagnostics.
• Exposure to core network elements such as MME, SGSN/GGSN, PGW, and HLR/HSS.

ITIL v3/v4 certification.