VoIP Asterisk Engineer

#vacancy #VoIP / #Asterisk Engineer (Fintech) | Remote | $2,000–3,000
Key Requirements
3+ years of commercial experience in a relevant role.
Strong expertise in Asterisk (versions 13 and above).
Hands-on experience building and maintaining VoIP solutions for contact centers or fintech environments.
In-depth understanding of SIP and RTP protocols, including NAT and QoS.
Experience configuring and managing SIP trunks.
Experience configuring IVR workflows, agent queues, and skill-based routing, including fallback and overflow logic.
Experience with call recording, CDR, and CEL.
Strong Linux administration skills (Ubuntu/Debian) in production environments.
Practical experience securing VoIP infrastructure, including protection against brute-force attacks, Fail2Ban, firewall configuration, ACLs, and rate limiting.
Experience integrating Asterisk with external systems, including CRM, billing, antifraud solutions, and APIs.
Experience using AMI / ARI to integrate Asterisk with backend systems.
Understanding of financial systems requirements, including reliability, auditability, and logging.
Ability to quickly understand and troubleshoot complex or legacy systems.
Responsibilities
Maintain and continuously improve the company’s telephony platform.
Ensure the stable operation of support, collections, and sales communication channels.
Configure and maintain IVR menus, call queues, and routing logic in line with business processes.
Integrate the telephony platform with internal services, including CRM, backend systems, and billing.
Ensure high availability and minimize system downtime.
Monitor call quality and key performance metrics, including SLA, ASR, and ACD.
Identify and resolve latency and call-quality issues.
Optimize system performance and support infrastructure scaling.
Upgrade and improve the existing VoIP infrastructure.
Create and maintain technical documentation covering call flows, routing, and integrations.
Collaborate with cross-functional teams, including backend, support, and security.