Senior Support Specialist, Phones – Contract

Petvisor

PetDesk provides client engagement solutions for veterinary clinics and grooming facilities. VoIP/PBX support specialist resolving advanced phones, network, and call-quality issues for multi-site clients.

Posted 8/18/2026contractRemote • 🇲🇽 MexicoSenior💰 $2,042 per monthWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in diagnosing and resolving SIP/VoIP connectivity issues, managing PBX systems, and provisioning IP phones. Strong written communication skills are essential for client interactions and documentation of technical solutions.

Highest-signal resume keywords

VoIP/PBX Support ExperienceSIP Protocol KnowledgePBX Call Routing/ConfigurationPacket Capture AnalysisClient-Facing Communication

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

SIP ProtocolPBX ConfigurationVoIP TroubleshootingSubnettingVLANsQoS ConfigurationPacket Capture AnalysisIP Phone ProvisioningSDP MismatchesNAT Traversal

Soft Skills

Written CommunicationProblem SolvingClient Guidance

Tools & Technologies

WiresharkPBX Systems

Industry Keywords

VoIPSIPPBXRTPRTCPNetwork TroubleshootingClient SupportTechnical Documentation

Tech Stack

Tools & technologies

VoIP

About the role

Key responsibilities & impact

Diagnose and resolve SIP/VoIP connectivity issues, including NAT traversal, SDP mismatches, one-way audio, and packet loss, across 15+ client tickets per day
Administer and troubleshoot PBX systems at the call-flow and trunk-configuration level
Remotely diagnose network-level issues at client sites, including router/firewall checks
Guide non-technical client staff through resolution steps via phone or screen share
Provision and configure IP phones for new and existing client accounts
Manage and resolve client-facing tickets daily while maintaining SLA adherence and clear written communication
Document recurring technical issues and solutions in the internal knowledge base

Requirements

What you’ll need

2–4 years of experience in technical VoIP/PBX support
Demonstrated experience with multi-site or enterprise-scale PBX deployments
Solid working knowledge of SIP protocol, RTP/RTCP, PBX call routing/configuration, codec-related call quality issues, and common VoIP failure modes
Working knowledge of subnetting/VLANs, QoS configuration, and packet capture analysis using Wireshark or equivalent
Hands-on experience provisioning and configuring IP phones across multiple hardware vendors
Strong written English communication for client-facing correspondence
Demonstrated ownership and ability to resolve complex technical issues without heavy oversight
Fluency in written and spoken English
Ability to provide own equipment, stable internet connectivity, and a dedicated workstation
Availability aligned to North American business hours

Benefits

Comp & perks

Contractors must provide their own equipment (laptop, monitors, keyboard, mouse, etc.)
Stable internet connectivity and dedicated workstations required
100% remote work arrangement