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SIP Developer

Full-time

Indotronix International Corporation

Role Description

Join a dynamic, high-impact team as a SIP Developer specializing in Oracle Communications Cloud Application Server (OCCAS) within a leading OMNIChannel platform. This is a hands-on development role focusing on SIP call orchestration, session management, and seamless integration with enterprise contact center and AI-driven systems. You will drive innovation in real-time communications, ensuring robust, scalable, and compliant voice and recording platforms used by global enterprises.

  • Design, develop, and maintain OCCAS-based SIP applications, focusing on session handling, advanced routing logic, and dialog control.
  • Implement SIPREC-based recording flows, multi-stream recording, metadata handling, and troubleshoot complex SIPREC scenarios.
  • Integrate SIP solutions with SBC infrastructure, enforce SIP signaling security (TLS/mTLS), and optimize SIP transport reliability.
  • Build and maintain CI/CD pipelines, automate build/test/deploy, and ensure code quality, security, and safe release strategies.
  • Develop and execute comprehensive SIP testing, including unit, integration, end-to-end, and performance/load tests.
  • Provide advanced (L3/L4) production support, perform root cause analysis, incident resolution, and build runbooks for operational excellence.
  • Integrate SIP layer with Amazon Connect, Genesys, and AI/Bot platforms to enable agent-assist, AI-driven routing, and bot-to-agent escalation.

Qualifications

  • Deep hands-on expertise with SIP protocol (RFC 3261), SIPREC, and session management in OCCAS/WebLogic environments.
  • Strong Java / J2EE / SIP Servlets development background.
  • Proven experience building SIP call orchestration logic beyond basic SBC/networking configuration.
  • Solid understanding of call flows, SDP, RTP media handling, and SIP dialog/state management.
  • Hands-on experience with Oracle OCCAS (or equivalent SIP app server), SBC platforms, and contact center solutions (Amazon Connect, Genesys, Cisco UCCE).
  • Familiarity with CI/CD tools (GitHub, Jenkins), containerization (Docker/Kubernetes), and AWS.
  • Advanced troubleshooting with Wireshark, SIP traces, and observability tools in high-volume, real-time SIP environments.

Requirements

  • Experience with large-scale SIP platforms (multi-cluster OCCAS deployments, 100+ engines).
  • Knowledge of telecom standards (3GPP, IMS).
  • Experience integrating AI/ML voice solutions (agent assist, analytics).
  • Familiarity with PCI or compliance-driven call recording environments.

Benefits

  • 100% remote-work from anywhere in the United States.
  • Opportunity to work on cutting-edge SIP, cloud, and AI integrations.
  • Exposure to high-impact, enterprise-scale communications platforms.
  • Collaborative, innovative environment focused on career growth and technical excellence.

How to Apply

Ready to advance your SIP development career? Submit your resume today for immediate consideration. This is a rare opportunity for SIP developers who thrive on building logic, not just configuring networks. If you're passionate about end-to-end call orchestration and enterprise-grade solutions, we want to hear from you!

Vacancy posted 19 hours ago
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