Sr. VOIP Developer - Remote (US Shift)
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Job Description
Sr. VOIP Developer – VoIP & Telephony Engineering
Location: RemoteEmployment Type: Full-TimeShift: Flexible / As per business requirement
About the RoleWe are looking for a highly skilled Sr. VOIP Developer with strong hands-on experience in Asterisk, FreeSWITCH, SIP-based telephony systems, and open-source dialer ecosystems. The ideal candidate will be responsible for the configuration, customization, deployment, troubleshooting, and optimization of VoIP infrastructure and communication platforms.
This role requires deep technical expertise in PBX systems, dialplan/XML programming, IVR design, call center solutions, and SIP server technologies such as Kamailio and OpenSIPS.
Key Responsibilities:Configure, deploy, maintain, and troubleshoot Asterisk / FreeSWITCH based VoIP systemsPerform Asterisk / FreePBX data migration, upgrades, and system optimizationDevelop and manage Dialplans, XML-based call flows, and telephony logicDesign and implement IVR / IVRS solutions, auto-reminder systems, and voice broadcasting setupsBuild and support call center environments, conference bridges, inbound/outbound calling systems, and routing logicWork on AGI scripting and telephony automation to improve system efficiencyConfigure and manage SIP trunking, call routing, failover, and voice quality optimizationDeploy, maintain, and troubleshoot open-source dialer platforms such as VicidialNow and OSDialSupport and optimize Kamailio / OpenSIPS based SIP routing and proxy environmentsWork with WebRTC, voice logger systems, and real-time communication solutionsMonitor VoIP infrastructure performance and proactively resolve service issuesCollaborate with development and operations teams for integrations, deployments, and enhancementsManage Linux-based servers and support backend telephony applicationsMaintain system security, uptime, backups, and documentation
Required Skills & Technical ExpertiseCore VoIP / Telephony
Strong hands-on experience with:Asterisk | FreeSWITCH | SIP / VoIP | Dialplan Programming | XML Programming | AGI Scripting | IVRS / IVR Design | Call Center Setup |Conference Systems | Voice Broadcasting | Auto Reminder Systems | Voice Logger | SIP Proxy / Routing
Working knowledge of:Kamailio | OpenSIPS | Dialer / Open Source Support
Experience with:VicidialNow | OSDial | ASTPP Billing Software | Development / Scripting |
Familiarity with:Lua | Perl | PHP | Node.js | Erlang | CURL | memcache | Infrastructure / Systems
Strong understanding of:Linux System Administration | LAMP Stack | WebRTC | RabbitMQ | Database Administration
Database experience preferred:Oracle / OCP Certified is an added advantage
Why Adit?We are a fast-paced organization in a phase of sustained, strategic scale and expansion.We offer remote opportunities with Flexible work schedules for better work-life balance.Group of 700+ Agile, Smart, and Dynamic IT Professionals.Supportive and collaborative work environment.Great working and learning environment
Requirements
Department: Product Team
Experience: 8+
Posted: 2026-04-01T06:58:13.263Z