Job Summary

We are looking for a skilled developer to build and maintain converged communication applications using Java and SIP-based technologies. The role involves developing SIP-enabled applications that interact with HTTP APIs and telecom media components to enable advanced voice services. Prior experience with Oracle Communications Converged Application Server (OCCAS) is desirable but not mandatory; strong expertise in Java, SIP Servlets, and telecom protocols is essential.

Key Responsibilities

- Design and develop SIP-based converged applications using Java and SIP Servlet APIs.

- Implement voice and messaging workflows integrating SIP signaling with HTTP/REST APIs.

- Build telecom service logic such as call routing, call control, media interaction, and event handling.

- Work with RTP/SRTP media streams and integrate with media servers for voice processing.

- Develop features like call transfers, call recording triggers, call monitoring, and media traversal.

- Integrate applications with SBCs, media servers, and telephony platforms.

- Troubleshoot SIP call flows, signaling issues, and RTP media problems.

- Collaborate with DevOps teams for deployment,



testing, and performance optimization.

- Write clean, modular, and scalable code for telecom-grade applications.

Required Skills

- Robust proficiency in Java.

- Hands-on experience with SIP Servlet API and SIP-based application development.

- Strong understanding of SIP protocol, SIP call flows, and telecom signaling concepts.

- Good knowledge of RTP and SRTP media streams.

- Experience building converged applications integrating SIP with HTTP/REST APIs.

- Understanding of media traversal, call control, call transfer, and call routing logic.

- Experience debugging SIP messages using tools like Wireshark or SIP trace tools.

- Familiarity with telecom architectures involving SBCs and media servers.

Good to Have

- Experience with **Oracle Communications Converged Application Server configuration and deployment.

- Experience working with IMS-based telecom architectures.

- Knowledge of WebRTC, VoIP platforms, or telecom application servers.

- Exposure to Docker/Kubernetes or CI/CD pipelines.

📌 Oracle OCASS Technical Consultant (FY 25-26) (India)
🏢 Matellio
📍 India