Senior Software Engineer – Oracle ECE and OC3C

About the role

We are seeking a Senior Software Engineer to design, develop, and maintain real‑time charging solutions for a leading telecom operator in Qatar. The role focuses on Oracle ECE and Oracle OC3C platforms, ensuring high‑availability, performance, and seamless integration with billing and network systems.

Key responsibilities

• Design, develop, and maintain real‑time charging solutions using Oracle ECE for data and converged services.
• Implement and customize ECE extensions such as pre‑rating, post‑rating, and post‑charging logic.
• Manage ECE gateways (Diameter, HTTP) and charging sessions, credit control, and quota allocation.
• Deploy, configure, upgrade, and patch ECE in standalone and Active‑Active environments, including cloud‑native deployments with Docker, Kubernetes or OpenShift.
• Integrate ECE with BRM, PDC, mediation systems, PCRF/PCF, and 5G CHF; design event‑driven integrations using Kafka.
• Monitor ECE performance with Prometheus and Grafana, troubleshoot JVM, memory, and latency issues.
• Develop control plans, feature nodes, and real‑time service logic in Oracle OC3C; build SLEE‑based applications and Advanced Control Services.
• Customize MAP adapters, TCAP interfaces, and SIGTRAN stack configurations; integrate with MSC, HLR, STP, SMSC, and mediation systems.
• Provide L2/L3 production support, perform root‑cause analysis for SS7 signaling and charging failures, and ensure high availability.
• Participate in solution design discussions, architecture decisions, and create technical documentation and runbooks.

Required profile

• Senior‑level experience with Oracle ECE architecture, deployment, and customization.
• Hands‑on experience installing, configuring, upgrading, and patching ECE.
• Proven experience with Oracle OC3C, SLEE‑based applications, and Advanced Control Services.
• Strong knowledge of telecom signaling protocols (Diameter, SS7, SIGTRAN, M3UA, SCTP).
• Experience delivering solutions in Docker, Kubernetes or OpenShift environments.
• Ability to provide L2/L3 production support and perform root‑cause analysis.

Required skills

• Oracle ECE
• Oracle OC3C
• Java (extensions and custom logic)
• Docker, Kubernetes, OpenShift
• Kafka, Prometheus, Grafana
• Diameter, SS7, SIGTRAN, M3UA, SCTP
• CI/CD pipeline implementation
• Performance tuning and JVM optimization