Staff SIP Engineer

At Weave (NYSE: WEAV), we’re on a mission to elevate the patient experience by giving healthcare practices the tools they need to run more efficiently and meaningfully connect with their patients. With 40,000+ customers and growing, Weave’s all-in-one platform supports every interaction—from scheduling and payments to communication and reviews—making it easier for healthcare professionals to focus on what matters most: patient care. Weave is looking for a VoIP Engineer with a strong background in modern communication tools and cloud technologies to help maintain and optimize our distributed, cloud-based voice platform. In this role, you’ll ensure our communication systems are robust, efficient, scalable, and observable working hands-on with SIP/RTP infrastructure and core components like Kamailio, RTPengine, FreeSWITCH, and Homer/HEPIC. You’ll collaborate cross-functionally with engineering and operations teams to improve reliability, performance, and customer call quality while shipping improvements through DevOps best practices. - This position can be remote, in office, or hybrid - Reports to: Engineering Manager WHAT YOU WILL OWN - 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 - 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…