Staff SIP Engineer

Grow and manage a distributed cloud-based VoIP platform

Optimize and troubleshoot FreeSWITCH and Kamailio configurations for performance, resiliency, and reliability

Design, build, test, deploy, and maintain services that support the voice platform

Monitor and analyze VoIP network performance, identify areas for improvement, and implement solutions to enhance quality and efficiency

Troubleshoot and resolve VoIP-related issues including call quality problems, signaling/connectivity issues, and system outages

Develop Golang-based microservices and containers that support the voice ecosystem

Deploy and operate services in Kubernetes environments

Maintain and configure Kamailio and FreeSWITCH instances

Implement and improve observability for SIP/RTP flows using HEP/Homer and telemetry (metrics/logs/traces) to accelerate incident response and root-cause analysis

Partner with SRE/Platform teams to improve CI/CD, infrastructure-as-code, and reliability practices (e.g., automated rollouts, canarying, and repeatable environments)

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 (Google Cloud preferred), including networking concepts such as VPCs, load balancing, service discovery, and IAM/security fundamentals

Comfort participating in on-call rotations and driving incident remediation through postmortems and follow-up engineering work

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)

Employment with Weave is contingent upon the successful completion of a background check , conducted in accordance with applicable laws.

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Weave is an equal opportunity employer that is committed to fostering an inclusive workplace where all individuals are valued and supported. We welcome anyone who is hungry to learn, problem-solve and progress regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, or other applicable legally protected characteristics. If you have a disability or special need that requires accommodation, please let us know.

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