Senior Technical Lead - Asterisk & Telephony

Rekruton Global IT Services; India; On-site; INR 400,000 - 700,000; Full time

Job summary

Rekruton Global IT Services in India seeks a Senior Technical Lead for Asterisk & Telephony to shape architecture, drive development, and run operations of our voice infrastructure.

You will lead a hands-on engineering team, mentor staff, and ensure high availability, performance, and security across cloud and on-premise telephony environments.

The role requires deep SIP/RTP expertise, cloud platforms, and experience delivering scalable VoIP systems, with a focus on reliability and throughput.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Telecommunications, or a related field.
• 10+ years of experience in telephony and VoIP systems, including 7+ years with Asterisk PBX in production.
• 3+ years in a technical leadership role, managing teams or projects in a telephony/VoIP environment.
• Deep expertise in SIP, RTP, SRTP, IAX2, DAHDI, codec negotiation, and troubleshooting call quality issues.
• Strong scripting and development experience in Python, Bash, and AGI/AMI/ARI.
• Proficient in Linux system administration and CLI-based network debugging tools.
• Solid understanding of cloud platforms (AWS, GCP, or Azure), including load balancing, networking, and security configurations.
• Hands-on experience with relational databases (MySQL, MariaDB PostgreSQL) and REST API integrations.
• Familiarity with monitoring tools like Grafana, Prometheus, Zabbix or custom SIP monitoring stacks.
• Experience with Wireshark, tcpdump, and other packet-level analysis tools.

Responsibilities

• Lead the design, development, and deployment of Asterisk-based VoIP systems, including dial plans, IVRs, call routing, and conferencing.
• Architect and scale high-availability telephony platforms, integrating SIP trunks, codecs, and real-time monitoring systems.
• Guide the team in implementing and optimizing AGI/ARI/AMI-based automation, custom call logic, and backend integrations.
• Direct cloud-based telephony deployments (AWS, GCP, Azure), focusing on reliability, security, and performance.
• Oversee incident response and troubleshooting of complex VoIP issues including NAT traversal, QoS, and signaling errors.
• Collaborate with product, DevOps, security, and networking teams to deliver robust end-to-end communication solutions.
• Provide leadership and mentorship to engineers and developers on Asterisk best practices, code quality, and architectural design.
• Drive initiatives for telephony analytics, call quality monitoring, and proactive system health checks.
• Ensure adherence to security standards, compliance requirements, and telephony regulations (e.g., TLS, SRTP, fraud prevention).
• Maintain technical documentation and support team knowledge-sharing initiatives.

Skills

Asterisk PBX

VoIP

SIP

Leadership

Python

Bash

AGI/AMI/ARI

Linux

Cloud platforms

Education

Bachelor’s or Master’s degree in Computer Science/Telecommunications

Tools

Docker

Kubernetes

AWS

GCP

Azure

MySQL/MariaDB/PostgreSQL

Job description

We are looking for a Senior Technical Lead – Asterisk & Telephony to spearhead the architecture, development, and operations of our voice infrastructure. This role requires deep hands-on experience with Asterisk PBX, SIP-based communication, cloud telephony, and team leadership. The ideal candidate will drive technical direction, mentor engineers, and ensure high availability and performance of mission-critical voice systems across cloud and on-premise environments.

Key Responsibilities

• Lead the design, development, and deployment of Asterisk-based VoIP systems, including dial plans, IVRs, call routing, and conferencing.
• Architect and scale high-availability telephony platforms, integrating SIP trunks, codecs, and real-time monitoring systems.
• Guide the team in implementing and optimizing AGI/ARI/AMI-based automation, custom call logic, and backend integrations.
• Direct cloud-based telephony deployments (AWS, GCP, Azure), focusing on reliability, security, and performance.
• Oversee incident response and troubleshooting of complex VoIP issues including NAT traversal, QoS, and signaling errors.
• Collaborate with product, DevOps, security, and networking teams to deliver robust end-to-end communication solutions.
• Provide leadership and mentorship to engineers and developers on Asterisk best practices, code quality, and architectural design.
• Drive initiatives for telephony analytics, call quality monitoring, and proactive system health checks.
• Ensure adherence to security standards, compliance requirements, and telephony regulations (e.g., TLS, SRTP, fraud prevention).
• Maintain technical documentation and support team knowledge-sharing initiatives.

Required Skills & Qualifications

• Bachelor’s or Master’s degree in Computer Science, Telecommunications, or a related field.
• 10+ years of experience in telephony and VoIP systems, including 7+ years with Asterisk PBX in production.
• 3+ years in a technical leadership role, managing teams or projects in a telephony/VoIP environment.
• Deep expertise in SIP, RTP, SRTP, IAX2, DAHDI, codec negotiation, and troubleshooting call quality issues.
• Strong scripting and development experience in Python, Bash, and AGI/AMI/ARI
• interfaces.
• Proficient in Linux system administration and CLI-based network debugging tools.
• Solid understanding of cloud platforms (AWS, GCP, or Azure), including load balancing, networking, and security configurations.
• Hands-on experience with relational databases (MySQL, MariaDB PostgreSQL) and REST API integrations.
• Familiarity with monitoring tools like Grafana, Prometheus, Zabbix or custom SIP monitoring stacks.
• Experience with Wireshark, tcpdump, and other packet-level analysis tools.

Preferred Skills

• Knowledge of Kamailio or OpenSIPS as SBCs or SIP routers.
• Familiarity with WebRTC, contact center technologies, or call recording/compliance systems.
• Experience deploying containerized telephony solutions (Docker, Kubernetes).
• Exposure to compliance and regulatory frameworks (PCI, HIPAA, GDPR, CALEA).

Nice To Have (Voicebot / AI Telephony Exposure)

• Experience working with voicebot or conversational AI platforms and integrating them with Asterisk-based telephony systems.
• Familiarity with Speech-to-Text (STT) and Text-to-Speech (TTS) technologies such as Deepgram, Google Speech, Amazon Polly, or similar services.
• Basic understanding of Natural Language Processing (NLP) and Large Language Models (LLMs) used in conversational AI applications.
• Exposure to real-time RTP audio streaming, media handling, and integration of telephony audio streams with external AI/ML services.
• Experience building or supporting real-time voice pipelines involving SIP, RTP, WebSockets, and AI inference services.

Skills: opensips,webrtc,telephony,security,tcpdump,python,ari,scripting,sip,voip,aws,wireshark,bash,cloud,ami,kamalio,asterisk,agi