VoIP Operations Engineer (Mid-Level)
SingleComm
RemoteRemoteFull Time
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
(build deploy 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
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
(build deploy 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