# Staff SIP Engineer

**Company**: Weave
**Location**: Lehi, UT
**Work arrangement**: remote
**Experience**: staff
**Job type**: Full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://jobs.ashbyhq.com/weave/60c0b7e6-5702-4e16-ad34-cbd2773f752d?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_b3610060-134

## Description

Weave is looking for a VoIP Engineer with a strong background in modern communication tools and cloud technologies to help maintain and optimize its distributed, cloud-based voice platform.

In this role, you'll ensure 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.

**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)

**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

**Preferred Qualifications**

- 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)

## Skills

### Required
- VoIP
- Kamailio
- FreeSWITCH
- RTPengine
- SIP
- RTP
- TCP/IP
- Go
- Java
- C
- Python
- Bash
- LUA
- Terraform
- Ansible
- Kubernetes
- Google Cloud

### Nice to have
- OpenSIPS
- Wireshark
- sngrep
- Homer
- MOS/RTCP analytics
- jitter/loss monitoring
- SBC/edge routing strategies
- capacity planning

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Source: [Apply at jobs.ashbyhq.com](https://jobs.ashbyhq.com/weave/60c0b7e6-5702-4e16-ad34-cbd2773f752d?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)