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VoIP Operations Engineer (Mid-Level)

SingleComm -
Remote

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Job Details

Full-time

Qualifications

Containerization systems
Telecommunications network device configuration
Customer communication
Network planning
Linux support
Load balancers
Amazon EC2
Ansible
Telecommunications network performance monitoring
Tooling
Infrastructure as Code (IaC)
Improving system uptime or availability
IT system monitoring
GitHub Actions
Configuration management
Scalable systems
System maintenance
Troubleshooting audio issues
Key Performance Indicators
Programming languages
Control room operations
Cloud service support
Cost analysis
Terraform
Log analysis tools
Scalability
Voice over internet protocol (VoIP) configuration
Monitoring system implementation
Cloud load balancing
System deployment

Full Job Description

VoIP Operations Engineer:

We are seeking a VoIP Operations Engineer with hands-on production experience to help operate and scale a carrier-grade voice platform. You will work directly with FreeSWITCH, Kamailio, SIP carriers and cloud infrastructure, owning troubleshooting, reliability and operational excellence.

This role combines deep technical work, incident response and clear communication. You will be trusted not only to fix issues, but to explain them clearly and with evidence to internal teams.

Experience: 2+ Years Hands-on VoIP/Telecom/Voice Infrastructure experience, production exposure to FreeSWITCH and/or Kamailio and operating real-time systems in Linux environments

Location: Remote working EST hours

Type: Full -time

Reports to: Operations Lead

Team: Voice Infrastructure/Operations

Core Technical Requirements (Hands-On)

VoIP & Telecom - You should be comfortable independently debugging:

FreeSWITCH

Dialplans, gateways,SIP profiles
Codec negotiation, NAT handling
Log analysis and call failure diagnosis

Kamailio

SIP routing logic
Dispatcher/load balancing
Acting as a SIP proxy in front of media servers

SIP Signaling

Full call flows (INVITE

BYE)
Re-INVITEs, CANCELs, SIP error handling (4xx/5xx)

SIP Tracing

sngrep, ngrep, packet captures, HOMER
Correlating multi-leg calls and Call-IDs

RTP & media

RTP negotiation and flow
SDP analysis, codec mismatches
One-way/no-audio troubleshooting

Telco layer

Origination vs termination
DIDs, carriers, SBCs, SIP interconnects
Voice KPIs (ASR, ACD, PDD, MOS)

Networking

Comfortable with wireshark
Able to find and identify network issues

Infrastructure, Automation and Reliability

Cloud & Automation

AWS: EC2, security groups, basic VPC/networking
Terraform: modify and maintain existing modules
Ansible: configuration management and provisioning

Containers and Delivery

Docker: containerized services networking, volumes
CI/CD: GitHub Actions, GitLab CI or similar
rollback understanding)

Observability & Capacity

Monitoring & Alerting

Prometheus, Grafana, CloudWatch, or equivalents
Responding to alerts and troubleshooting in real time

Infrastructure dimensioning

CPU, memory, disk, network sizing
Capacity planning for growth and peak traffic

Configuration Management

Deep familiarity with configuration management tools (Ansible, Terraform) not only for infrastructure but also for service deployment and maintenance of core applications (e.g., FreeSWITCH, Kamailio, web servers like Apache/Nginx).

Linux & Operations (Must be Very Comfortable)

Strong Linux command-line skills
Reading and analyzing logs
Network and system-level troubleshooting
Comfortable operating on production systems
Automation and Scripting: Proficiency in at least one common scripting language (Python, Bash) for automating repetitive tasks, analyzing data, and performing system-level operations.

Responsibilities

Operate and support a live VoIP platform
Respond to alerts and troubleshoot incidents
Debug SIP/RTP issues and call quality problems
Participate in a light on-call rotation
Work with carriers and vendors during incidents
Improve monitoring, alerting and automation
Support account executives with clear technical explanations
Contribute to scaling and architecture decisions
Identify cost-saving opportunities based on resource utilization

On-Call Expectations

Participation in a light, shared on-call rotation
Alerts are infrequent and actionable
Focused on: call failures, Media RTP issues, carrier connectivity, initial triage, troubleshooting and escalation, no constant paging and no noisy or consumer-scale alerting
We run real-time systems, so on-call exists, but it is intentionally kept sane, meaningful and sustainable.

Cross-Team & Customer Support Responsibilities

Work closely with Account Executives during incidents or escalations
Clearly determine and explain the following:
When an issue is on our side
When it is carrier side
When it is external or customer-side
Provide evidence-based explanations: SIP traces, logs, metrics
Must enable AEs to communicate accurately and confidently with customers.

Communication & Collaboration (Very Important)

Strong written and verbal communication skills
Ability to explain complex technical issues clearly and calmly
Comfortable presenting conclusions backed by data
Understands the difference between: facts, assumptions and hypotheses
Clear and professional communication during incidents

Nice to Have

Homer/HEP
Redis or message queues
Bash or Python scripting
STIR/SHAKEN, fraud detection or call analytics
Strong proficiency in Python for systems automation, tooling and data analysis
Advanced Bash/Shell scripting skills for routine operations and troubleshooting

ell7cMpI1x

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