Senior VoIP Engineer (Asterisk)

🏢 Company: Digital Biz Factory 📍 Format: remote 🕐 Employment: project-based work 🌍 Location: Almaty / Kazakhstan / Russia (GMT+5)

Requirements:

• 3+ years of experience • Deep practical experience with Asterisk (13+ / 16+ / 18+) • Experience in building and supporting VoIP systems for support / call centers / fintech • Solid understanding of SIP, RTP, NAT, QoS • Experience with SIP trunks • Setup of IVR, Queues, skill-based routing, overflow, fallback • Experience with call recording and working with CDR / CEL • Linux (Ubuntu/Debian), experience with production servers • Security: SIP brute-force, Fail2Ban, firewall, ACL, rate limits • Experience integrating Asterisk with CRM, billing, antifraud, API • Experience with AMI / ARI (integration with backend systems)

Responsibilities:

• Support and development of the fintech service telephone platform • Ensuring stable operation of support / collections / sales • Setup and support: IVR, operator queues, call routing based on business logic. • Integration of Asterisk with internal systems (CRM, backend, billing). • Ensuring fault tolerance and minimal downtime • Monitoring of call quality (SLA, ASR, ACD) • Analysis and resolution of communication problems and delays • Load optimization and system scaling • Updating and modernizing the existing VoIP infrastructure • Documentation of call-flow, routing schemes, and integrations • Interaction with backend, support, and security teams

Conditions

• Strong engineering role with influence on architecture • Minimum bureaucracy • Real infrastructure challenges • Employment under individual entrepreneur / civil law contract

📩 Write: recruiter contact