VoIP Engineer

Job Description: VoIP Engineer

Position: VoIP Engineer

Job Summary

We are looking for a skilled VoIP Engineer responsible for designing, deploying, configuring, maintaining, and troubleshooting Voice over IP (VoIP) infrastructure. The role involves managing SIP-based communication systems, VoIP gateways, PBX platforms, call routing, and ensuring high availability and quality of voice services.

Key Responsibilities

• Design, configure, and maintain VoIP networks and telephony systems.

• Install, configure, and troubleshoot IP PBX platforms such as Asterisk, FreeSWITCH, Cisco CUCM, 3CX, or similar systems.

• Manage SIP trunks, SIP signaling, RTP media, codecs, and call routing configurations.

• Perform VoIP troubleshooting using tools such as Wireshark, tcpdump, and SIP monitoring platforms.

• Monitor voice quality metrics including latency, jitter, packet loss, and MOS scores.

• Configure and maintain VoIP gateways, Clients (Session Border Controllers), routers, and firewalls.

• Handle SIP registration, NAT traversal, STUN/TURN, and firewall-related VoIP issues.

• Implement call flows, IVR, dial plans, extensions, and routing rules.

• Support VoIP integrations with CRM, contact center, and unified communications platforms.

• Perform system upgrades, backups, patches, and performance tuning.

• Document network designs, configurations, troubleshooting procedures, and operational processes.

• Provide technical support and incident resolution for VoIP-related issues.

Required Skills & Qualifications

• Bachelor's degree in Computer Science, Information Technology, Telecommunications, or equivalent experience.

• Experience with VoIP protocols including SIP, RTP, SDP, TCP/IP, UDP, and DNS.

• Strong knowledge of IP networking concepts: VLANs, routing, NAT, DHCP, QoS, and firewalls.

• Hands-on experience with SIP troubleshooting and call flow analysis.

• Experience with VoIP platforms such as:

  • Asterisk / FreePBX

  • FreeSWITCH

  • Cisco CUCM

  • 3CX

  • BroadWorks or similar platforms

• Familiarity with Linux servers and command-line troubleshooting.

• Knowledge of VoIP security practices and fraud prevention.

• Experience with cloud VoIP deployments (AWS/Azure/GCP) is a plus.

Preferred Certifications

• Cisco CCNA / CCNP Collaboration

• SIP/VoIP vendor certifications

• Linux certifications

• Networking or cloud certifications

Soft Skills

• Strong analytical and problem-solving abilities.

• Good communication and documentation skills.

• Ability to work independently and handle production issues.

• Willingness to participate in on-call support when required.

Experience Level

• 2–5+ years of experience in VoIP engineering, SIP support, or telecom operations.