Weave - Staff SIP Engineer
Requirements
• 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 • What Will Make Us Love You • 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. • At Weave, we use Artificial Intelligence (AI) tools to help us work more efficiently and create a smoother candidate experience. AI may assist with things like writing job descriptions, scheduling interviews, or reviewing applications against job-related criteria. For additional information, please review the External AI Policy Statement available on our Careers page.
Responsibilities
• 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) • What You Will Need to Accomplish the Job • The minimum qualifications for the role: education, experience, certifications, skills. • 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 • What Will Make Us Love You
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