Hisham Jan

VoIP and AI Systems Engineer with 5+ years of hands-on experience in VoIP, Systems, and AI/ML, delivering scalable PBX modernizations, SIP/RTP optimization, and AI-driven IVR automation. Skilled in diagnosing complex signaling issues, improving call reliability, and integrating real-time STT/LLM/TTS pipelines into production environments. Strong collaborator across engineering, infrastructure, and operations teams.

VoIP Engineer - Synthflow AI - Globally Remote

(2025-06)

AI-powered voice automation platform for real-time customer interactions.

• Redesigned SIP signaling and media flows, reducing call setup failures and improving audio consistency.
• Helped migrate media routing from LiveKit to FreeSWITCH, lowering latency and improving stability for high-volume usage.
• Collaborated across AI, backend, and infra teams to streamline debugging and accelerate delivery.
• Implemented CI + automated integration testing to reduce regressions and stabilize releases.

AI and VoIP Engineer - TGD Services DMCC - Dubai, UAE

(2024-05 - 2025-06)

• Upgraded Asterisk systems (hardware, OS, DAHDI, SIP stack), improving uptime and reducing maintenance overhead.
• Revived and productionized a discontinued telecom product through architectural modernization.
• Built AI-powered IVR and agent-assist workflows (STT, LLM, TTS), reducing manual workload.
• Developed monitoring dashboards to reduce troubleshooting time for signaling and QoS issues.

VoIP Engineer - i2c Inc. - Lahore, Pakistan

(2021-10 - 2024-05)

• Automated PBX workflows and monitoring using Python/Bash/Perl AGI scripts.
• Integrated Microsoft Teams with PBX to enable hybrid communication and reduce telephony costs.
• Applied LLM/NLP techniques to analyze customer communication data for business insights.
• Improved SIP routing, trunk stability, and failover handling.

VoIP Engineer - LastingSales / HadiTelecom - Lahore, Pakistan

(2020-10 - 2021-10)

• Managed Asterisk & Kamailio clusters, improving signaling throughput and call reliability.
• Developed automated callback workflows for Zong customers.
• Diagnosed nationwide SIP/RTP issues and supported telecom customers via Zong-Cap portal.

Bachelor of Electrical (Telecom) Engineering - Electrical Engineering - Telecommunications - COMSATS University Islamabad (2016 - 2020)