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, Free SWITCH, 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 Dev Ops best practices.

This position can be remote, in-office, or hybrid

Reports to:

Engineering Manager What You Will Own The duties and responsibilities of the role.

Grow and manage a distributed cloud-based VoIP platform

Optimize and troubleshoot Free SWITCH 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 Free SWITCH 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, Free SWITCH, 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 CExperience with scripting languages such as Python, Bash, and LUAExperience with Dev Ops 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 Preferred qualifications - including personality traits and soft skills.
5+ years of experience designing and supporting large-scale VoIP networks

Certifications 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…