CallTek
IT Network Engineer - PBX
Cebu City
- Level
- Mid
Not stated in the posting: salary, work type, visa.
Open. First seen 3 October 2026.
About the role
- Perform configuration and maintenance of PBX Systems. Including installation and configuration of softphones, managing User Accounts, Creation/Deletion of Queues/Flows, DIDs/TFNs, Extensions, Voicemails etc.
- Carry out Flows/IVRs and Call Routing design and implementation.
- Monitor network performance.
- Troubleshoot Network Infrastructure issues.
- Provide technical support to end users, resolving hardware and software issues efficiently.
- Diagnose problems, implement solutions, and escalate as necessary.
- Maintain documentation of common problems and solutions.
- Maintain service level agreements (SLA).
- Handle routine system maintenance (network/software/PBX)
- Participate in backup testing, business continuity, and recovery drills.
- Log ticket issues and document relevant information to come up with a resolution.
- Work with Security and Compliance to ensure IT infrastructure compliance with organizational policies, procedures, and industry standards.
- Collaborate with other teams – Corporate Connectivity, Managed Services, Engineering, Security, and Compliance
- Help identify opportunities for process improvement, recommendations, upgrades, or new technologies
- Able to stay current with industry trends and best practices to enhance operational efficiency
Requirements
- IT / Computer Science-related degree or certification.
- Knowledge in SIP, RTP and WebRTC, including voice codecs to optimize audio quality.
- Knowledge in Zoom Phone and Zoom Contact Center, Mitel, Vanilla Asterisk and other Asterisk based PBX Systems.
- Proficient in configuring, Flows, Routing, Integrations etc. This includes scripting and APIs.
- Knowledge of SBC, MBG, and firewalls to secure voice networks, with a strong understanding of LAN/WAN routing and VLANs.
- Knowledge in Mikrotik, Tailscale and Netskope is a plus.
- Able to use Wireshark or other network packet tracer to diagnose call drops and SIP messages.
- Strong problem-solving and analytical abilities.
- Communication skills (technical and non-technical audiences).
- Time management and ability to prioritize tasks.
- Team collaboration and customer service orientation.
- Adaptability and willingness to learn new technologies.
- Attention to detail and documentation practices
What this role asks for
Particular to this role
WebRTC
Rare in CallTek's other 13 open postings.
In most of CallTek's ads
Networking
Named in most of its open postings, whatever the role.
Read against CallTek's other open postings on this site.
Other openings for this role
2 open postings for this role in Cebu City, first posted 3 October 2026. The company is likely hiring for more than one position. None has been taken down and posted again.
- 3 October 2026 – open (this posting)
- 3 October 2026 – open
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