Senior Software Engineer – Oracle ECE and OC

We are hiring for one our clients which is a telecom operator in Qatar.

• Design, develop, and maintain real‑time charging solutions using Oracle ECE for telecom services such as Data and Converged Charging.
• Implement and customize ECE extensions, including pre‑rating, post‑rating, post‑charging, and post‑update logic.
• Customize and manage ECE gateways, including Diameter Gateway and HTTP Gateway.
• Manage charging sessions, credit control, quota allocation, and real‑time balance updates within ECE.
• Ensure data consistency and synchronization between ECE and BRM systems.
• Deploy, configure, upgrade, and patch ECE in standalone and Active‑Active (geo‑redundant) environments.
• Implement ECE in cloud‑native environments using Docker, Kubernetes, or Open Shift.
• Integrate ECE with BRM, PDC, mediation systems, PCRF/PCF, and 5G CHF.
• Design and implement event‑driven integrations using Kafka or similar messaging platforms.
• Monitor ECE systems using Prometheus metrics and Grafana dashboards.
• Troubleshoot ECE performance issues, optimize JVM, memory, and latency.
• Design and develop control plans, feature nodes, and real‑time service logic in Oracle OC3C.
• Develop and maintain SLEE‑based applications and Advanced Control Services (ACS).
• Implement real‑time charging logic for Voice, SMS, and USSD services within OC3C.
• Customize MAP adapters, TCAP interfaces, and SIGTRAN stack configurations.
• Integrate OC3C with network elements such as MSC, HLR, STP, SMSC, and mediation systems.
• Design and implement IN service flows, including subscriber lifecycle and service activation.
• Provide L2/L3 production support and troubleshoot real‑time telecom service issues.
• Perform root cause analysis for SS7 signaling issues and charging failures.
• Execute system upgrades, patching, and configuration changes in OC3C environments.
• Design and support telecom signaling flows using Diameter protocols (Gy, Ro, Sy).
• Design and support telecom signaling flows using SS7 protocols (CAMEL, INAP, MAP).
• Work with SIGTRAN stack protocols such as M3UA and SCTP for IP‑based signaling.
• Integrate charging platforms with BRM, provisioning systems, mediation, and external systems.
• Monitor system performance, logs, KPIs, and signaling traffic.
• Troubleshoot complex production issues and ensure high availability of charging systems.
• Perform performance tuning, JVM optimization, and system scalability improvements.
• Work in high‑availability production environments with real‑time SLAs.
• Collaborate with cross‑functional teams (network, billing, Dev Ops, operations).
• Participate in solution design discussions and architecture decisions as SME.
• Prepare technical documentation, runbooks, and solution design artifacts.
• Implement CI/CD pipelines for automated build and deployment processes.

• Strong expertise in Oracle ECE architecture, components, and deployment models.
• Hands‑on experience with ECE installation, configuration, upgrade, and patching.
• Experience in ECE customization using Java extensions.
• Strong understanding of ECE‑BRM data synchronization mechanisms.
• Experience with Diameter Gateway and HTTP Gateway customization.
• Knowledge of 5G charging architecture and CHF integration.
• Experience with Prometheus metrics exposure and Grafana dashboards for ECE.
• Strong expertise in Oracle OC3C architecture and service control environment.
• Experience in control plan and feature node development.
• Hands‑on experience with SLEE‑based application development and ACS.
• Strong understanding of USSD gateway (ussdgw) and IN service implementation.
• Experience in MAP adapter, TCAP, and SIGTRAN stack configuration.
• In‑depth knowledge of Diameter protocols (Gy, Ro, Sy).
• Strong expertise in SS7 protocols (CAMEL, INAP, MAP).
• Hands‑on experience with SIGTRAN protocols (M3UA, SCTP).
• Strong understanding of real‑time charging flows and telecom signaling interactions.
• Strong proficiency in Core Java.
• Experience in REST and SOAP web services.
• Strong expertise in Oracle SQL and PL/SQL.
• Experience in event streaming platforms such as Kafka.
• Proficiency in Shell scripting.
• Experience with Docker and Kubernetes.
• Experience in CI/CD tools
• Strong knowledge of monitoring tools such as Prometheus and Grafana.