Staff SIP Engineer

The role

You will grow and manage a distributed cloud-based VoIP platform. You will optimize and troubleshoot FreeSWITCH and Kamailio configurations and develop Golang-based microservices.

What you will do

• Grow and manage a distributed cloud-based VoIP platform
• Optimize and troubleshoot FreeSWITCH and Kamailio configurations
• Design, build, test, deploy, and maintain services that support the voice platform
• Monitor and analyze VoIP network performance
• Troubleshoot and resolve VoIP-related issues
• Develop Golang-based microservices and containers
• Deploy and operate services in Kubernetes environments
• Maintain and configure Kamailio and FreeSWITCH instances
• Implement and improve observability for SIP/RTP flows
• Partner with SRE/Platform teams to improve CI/CD, infrastructure-as-code, and reliability practices

Required qualifications

• Previous experience working as a VoIP network engineer
• Experience with VoIP applications such as Kamailio, OpenSIPS, FreeSWITCH, RTPengine, and Asterisk
• Experience with troubleshooting tools such as Wireshark, sngrep, and Homer
• Deep understanding of TCP/IP networks, firewalls, and related protocols (SIP, RTP, RTCP, TLS, ICE, STUN, TURN, WebRTC)
• Programming experience with a major language such as Go, Java, or C
• Experience with scripting languages such as Python, Bash, and LUA
• Experience with DevOps tools for cloud infrastructure management and automation such as Terraform and Ansible
• Flexibility and adaptability in learning new technologies and tools
• Strong written, oral, and interpersonal communication skills
• Highly self-motivated and directed
• Keen attention to detail
• Experience operating production services in a major cloud environment, including networking concepts such as VPCs, load balancing, service discovery, and IAM/security fundamentals

Nice to have

• 5+ years of experience designing and supporting large-scale VoIP networks
• Certifications in Kamailio or OpenSIPS
• Hands-on experience with Kubernetes operations (deployments, services/ingress, Helm/Kustomize, autoscaling, and debugging)
• Experience designing or improving call-quality tooling (MOS/RTCP analytics, jitter/loss monitoring, SBC/edge routing strategies, or capacity planning)
• Google Cloud preferred

Before you apply

• Employment with Weave is contingent upon the successful completion of a background check

About the company

Weave is an equal opportunity employer committed to fostering an inclusive workplace.