Senior Voip Software Engineer Looi Consulting 04 Apr 2026 Offshore/nearshore Argentina

PT ORICO TEKNOLOGI CERDAS

Argentina
On-site
Node.js backend services
Voip systems engineering
Sip/rtp call flow troubleshooting
Design and build backend services powering large-scale cloud communications infrastructure, combining VoIP systems engineering with modern distributed backend development

Job Summary

  • Design and build backend services powering large-scale cloud communications infrastructure, combining VoIP systems engineering with modern distributed backend development.
  • Analyze and debug SIP and RTP call flows, configure OpenSIPS/Kamailio, and ensure reliable call signaling in a high-availability, multi-carrier SaaS environment.
  • Develop backend services in Node.js using modular, decoupled, and testable architecture patterns, integrating with VoIP platforms and cloud services.

Matching Summary

Design and build backend services powering large-scale cloud communications infrastructure, combining VoIP systems engineering with modern distributed backend development.

Skills & Requirements

Must-have

  • Node.js backend services
  • VoIP systems engineering
  • SIP/RTP call flow troubleshooting
  • OpenSIPS configuration
  • FreeSWITCH integration
  • event-driven distributed systems
  • message queues (RabbitMQ)

Nice-to-have

  • Fax over IP (FoIP)
  • real-time media platforms
  • healthcare tech background
  • compliance-driven industries
  • monitoring tools (Prometheus, Grafana)
  • Docker, Kubernetes, IaC

Key Requirements

  • Node.js production backend experience
  • FreeSWITCH or similar VoIP platform experience
  • SIP and RTP protocol knowledge
  • Message queue system experience
  • AWS services experience
  • CI/CD pipeline implementation
  • Linux command-line proficiency
  • Troubleshooting complex systems
  • Fluent spoken and written English

Work Rights

Not specified

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