SIP Engineer

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 hybridReports to: Engineering Manager What You Will Own The duties and responsibilities of the role. Grow and manage a distributed cloud-based VoIP platformOptimize and troubleshoot FreeSWITCH and Kamailio configurations for performance, resiliency, and reliabilityDesign, build, test, deploy, and maintain services that support the voice platformMonitor and analyze VoIP network performance, identify areas for improvement, and implement solutions to enhance quality and efficiencyTroubleshoot and resolve VoIP-related issues including call quality problems, signaling/connectivity issues, and system outagesDevelop Golang-based microservices and containers that support the voice ecosystemDeploy and operate services in Kubernetes environmentsMaintain and configure Kamailio and FreeSWITCH instancesImplement and improve observability for SIP/RTP flows using HEP/Homer and telemetry (metrics/logs/traces) to accelerate incident response and root-cause analysisPartner 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 engineerExperience with VoIP applications such as Kamailio, OpenSIPS, FreeSWITCH, RTPengine, and AsteriskExperience with troubleshooting tools such as Wireshark, sngrep, and HomerDeep 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 CExperience with scripting languages such as Python, Bash, and LUAExperience with DevOps tools for cloud infrastructure management and automation such as Terraform and AnsibleFlexibility and adaptability in learning new technologies and toolsStrong written, oral, and interpersonal communication skillsHighly self-motivated and directedKeen attention to detailExperience operating production services in a major cloud environment (Google Cloud preferred), including networking concepts such as VPCs, load balancing, service discovery, and IAM/security fundamentalsComfort participating in on-call rotations and driving incident remediation through postmortems and follow-up engineering work What Will Make Us Love You Preferred Qualifications - Including Personality Traits And Soft Skills. 5+ years of experience designing and supporting large-scale VoIP networksCertifications in Kamailio or OpenSIPSHands-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. 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. Beware of recruitment fraud. All official correspondence will occur through Weave branded email. We will never ask you to share bank account information, cash a check from us, or purchase software or equipment as part of your interview or hiring process.