VoIP Architect

We are seeking a VoIP Calling Architect to join our growing communications product line. The successful candidate will be responsible for the design, development, and maintenance of VoIP services, primarily utilizing  Asterisk . This role also involves designing and developing high-performance Python backend code and integrating cloud telephony features with  Twilio  and  Telnyx . Collaboration with product and engineering managers will be essential to deliver end-to-end features and launch reliable, scalable calling solutions.

Technical Skills

Core Technical Expertise:
VoIP Protocols:  In-depth knowledge of SIP, WebRTC, RTP, H.323, and other relevant VoIP and media protocols.
Networking:  Strong understanding of TCP/IP, UDP, QoS mechanisms, LAN/WAN networking, routing, and switching.
VoIP Platforms:  Practical experience with Cisco Unified Communications Manager (CUCM), Avaya Aura, and open-source solutions like Asterisk.
Troubleshooting :
Knowledge and experience in troubleshooting audio issues in client environments such as VDI, VPN, and MPLS networks.
Security:  Awareness of VoIP security best practices, including encryption and firewalls.
Cloud Solutions:  

Experience with cloud-based VoIP platforms and integration with services like AWS or Azure.

Required Experience:

VoIP System Development/Maintenance:  5+ years of experience building or maintaining production VoIP systems using Asterisk, FreePBX, or Free SWITCH.
Scalable Service Development:  5+ years developing scalable services in Python (using frameworks like FastAPI, Flask, or Django).
Voice/Messaging APIs:  Hands-on experience with Twilio and/or Telnyx APIs for voice and messaging.
Database

Skills:

Solid SQL proficiency.
Version Control & CI/CD:  Proficient with Git and modern CI/CD pipelines (Docker, Git Hub/Git Lab, Jenkins, etc.).
Experience working with Java, Spring Boot, and React

JS to bridge backend and frontend communication layers.

Key Responsibilities

VoIP & Asterisk
Design dial‑plans, IVRs, call routing, SIP trunking, and monitoring
Optimize performance, security, and high availability of the Asterisk stack

Backend Development (Python & Java)
Build micro‑services, REST/gRPC APIs, background workers, and data pipelines

Telephony Integrations
Design and Implement voice and messaging flows using Twilio and Telnyx APIs (Programmable Voice, Messaging, Webhooks, etc.)

Quality & Delivery
Understand the current code base, and build new features.
Designing the features on aggressive timelines with minimal iterations.

Nice‑to‑Have
Node.js for ancillary services
Cloud deployment on AWS or GCP (EC2, Lambda, S3, IAM, Cloud Watch)
Front‑end basics (React or plain JavaScript) for simple dashboards
Familiarity with Jira, Confluence, and Agile delivery practices
Certifications :
Relevant industry certifications are highly valued, such as:
Cisco Certified Network Professional (CCNP) Collaboration
Cisco Certified Internetwork Expert (CCIE) Collaboration
Microsoft certifications for platforms like Teams Voice.