Asterisk Developer

Responsibilities

• Design, develop, and maintain Asterisk-based telephony systems, including custom dial plans, IVRs, queues, voicemail, and conferencing.
• Configure and manage SIP trunks, ISDN trunks, Analog lines
• Configure and manage Call routing, failover, codec handling, and system monitoring tools.
• Develop integration scripts and services using Python to connect with Asterisk.
• Architect and deploy cloud-based telephony solutions, ensuring scalability, reliability, and security.
• Troubleshoot and resolve VoIP issues related to call quality, latency, jitter, NAT traversal, and firewall configurations.
• Leverage AGI and AMI interfaces to extend and automate Asterisk functionalities
• Monitor system performance and availability, and proactively address capacity and performance issues.
• Collaborate with DevOps, network, and application teams to ensure smooth end-to-end functionality of telephony services.
• Maintain system documentation and contribute to knowledge sharing within the team.
  

Qualifications

• Bachelor’s degree in Computer Science, Telecommunications, or a related field (or equivalent experience).
• 5+ years of hands-on experience with Asterisk PBX in production environments.
• 2+ years of professional Python development experience, ideally in telephony, automation, or backend systems.
• 3+ years of experience working with cloud platforms (AWS, GCP, or Azure), including deployment, monitoring, and security of VoIP applications.
• Strong knowledge of VoIP protocols (SIP, RTP, SRTP, IAX2, DAHDI, WebRTC), codecs, and NAT/firewall handling.
• Proficiency in Linux administration and scripting (Bash, Python).
• Experience with AGI/AMI scripting, and familiarity with Asterisk CLI tools and logs.
• Knowledge of telephony security best practices including encryption, authentication, and fraud mitigation.
• Experience integrating Asterisk with relational databases (MySQL/ MariaDB/ PostgreSQL) and REST APIs.
• Familiarity with tools like Wireshark, tcpdump, and SIP debuggers for network-level troubleshooting.
• Exposure to Kamailio, or OpenSIPS is a plus.