Rekruton Technologies

We are looking for a Senior Technical Lead – Asterisk &amp; 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:
<ul>
<li>Lead the design, development, and deployment of Asterisk-based VoIP systems, including dial plans, IVRs, call routing, and conferencing.</li>
<li>Architect and scale high-availability telephony platforms, integrating SIP trunks, codecs, and real-time monitoring systems.</li>
<li>Guide the team in implementing and optimizing AGI/ARI/AMI-based automation, custom call logic, and backend integrations.</li>
<li>Direct cloud-based telephony deployments (AWS, GCP, Azure), focusing on reliability, security, and performance.</li>
<li>Oversee incident response and troubleshooting of complex VoIP issues including NAT traversal, QoS, and signaling errors.</li>
<li>Collaborate with product, DevOps, security, and networking teams to deliver robust end-to-end communication solutions.</li>
<li>Provide leadership and mentorship to engineers and developers on Asterisk best practices, code quality, and architectural design.</li>
<li>Drive initiatives for telephony analytics, call quality monitoring, and proactive system health checks.</li>
<li>Ensure adherence to security standards, compliance requirements, and telephony regulations (e.g., TLS, SRTP, fraud prevention).</li>
<li>Maintain technical documentation and support team knowledge-sharing initiatives. </li>
</ul>
Required Skills &amp; Qualifications:
<ul>
<li>Bachelor’s or Master’s degree in Computer Science, Telecommunications, or a related field.</li>
<li>10+ years of experience in telephony and VoIP systems, including 7+ years with Asterisk PBX in production.</li>
<li>3+ years in a technical leadership role, managing teams or projects in a telephony/VoIP environment.</li>
<li>Deep expertise in SIP, RTP, SRTP, IAX2, DAHDI, codec negotiation, and troubleshooting call quality issues.</li>
<li>Strong scripting and development experience in Python, Bash, and AGI/AMI/ARI</li>
<li>&nbsp;interfaces.</li>
<li>Proficient in Linux system administration and CLI-based network debugging tools.</li>
<li>Solid understanding of cloud platforms (AWS, GCP, or Azure), including load balancing, networking, and security configurations.</li>
<li>Hands-on experience with relational databases (MySQL, MariaDB PostgreSQL) and REST API integrations.</li>
<li>Familiarity with monitoring tools like Grafana, Prometheus, Zabbix or custom SIP monitoring stacks.</li>
<li>Experience with Wireshark, tcpdump, and other packet-level analysis tools.</li>
</ul>
&nbsp;
Preferred Skills:
<ul>
<li>Knowledge of Kamailio or OpenSIPS as SBCs or SIP routers.</li>
<li>Familiarity with WebRTC, contact center technologies, or call recording/compliance systems.</li>
<li>Experience deploying containerized telephony solutions (Docker, Kubernetes).</li>
<li>Exposure to compliance and regulatory frameworks (PCI, HIPAA, GDPR, CALEA). </li>
</ul>
Nice to Have (Voicebot / AI Telephony Exposure):
<ul>
<li>
Experience working with voicebot or conversational AI platforms and integrating them with Asterisk-based telephony systems.
</li>
<li>
Familiarity with Speech-to-Text (STT) and Text-to-Speech (TTS) technologies such as Deepgram, Google Speech, Amazon Polly, or similar services.
</li>
<li>
Basic understanding of Natural Language Processing (NLP) and Large Language Models (LLMs) used in conversational AI applications.
</li>
<li>
Exposure to real-time RTP audio streaming, media handling, and integration of telephony audio streams with external AI/ML services.
</li>
<li>
Experience building or supporting real-time voice pipelines involving SIP, RTP, WebSockets, and AI inference services.
</li>
</ul>