IN8INITY
Technical Product Manager - Voice Platform
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Technical Product Manager - Voice Platform
We are looking for an experienced Technical Product Manager to own and drive the development of our operator-grade Voice Platform.
This is a highly technical leadership role combining product ownership, solution architecture, and engineering management. You will define the platform roadmap, lead technical decisions, coordinate a small engineering team, and ensure the reliability and scalability of voice services running in production.
What you’ll do:
- Own and develop the technical roadmap for the Voice Platform
- Translate business and operational requirements into technical tasks and delivery plans
- Lead architecture decisions for SIP routing, carrier interconnects, RTP/media handling, high availability, observability, and scaling
- Manage and mentor the engineering team responsible for voice services
- Define delivery priorities, acceptance criteria, testing strategy, and release approach
- Drive reliability, incident analysis, postmortems, and continuous platform improvement
- Own capacity planning: CPS, concurrent calls, SIP signaling load, DB load, RTP relay load
- Oversee carrier interconnect logic: provider routing, failover, redundancy, quality control
- Improve CI/CD practices for SIP configuration validation, routing tests, regression tests, deployment, and rollback
- Ensure strong observability: call-id correlation, structured logs, metrics, alerts, SIP/RTP tracing
- Collaborate with NOC/support during production incidents and escalations
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What we’re looking for:
- Strong hands-on background in SIP/VoIP platforms
- Deep understanding of SIP call flows: routing, dialogs, transactions, branches, in-dialog requests
- Strong understanding of SIP NAT traversal: registration, authentication, Contact, Record-Route/Route handling
- SDP offer/answer, codec negotiation, RTP/RTCP troubleshooting
- SRTP and DTLS-SRTP basics
- WebRTC signaling and media basics
- SIP tracing and troubleshooting with sngrep, tcpdump, and Wireshark
- Carrier interconnect experience: providers, routing, failover, traffic policies
- DNS SRV for SIP routing and failover
- Production troubleshooting and incident analysis experience
- Knowledge of main SIP/SDP/RTP-related RFCs
- SIP over UDP, TCP, TLS, WebSocket
- SIP security risks: spoofing, malformed messages, toll fraud
- HA/failover architecture and observability patterns
- In-depth Kamailio experience
- Lua KEMI routing
- Good knowledge of Kamailio modules
- RTPengine experience
- Architecture/design experience for production telecom systems
- Experience leading or coordinating an engineering team
- Ability to communicate with both engineers and non-technical stakeholders
- Fluent Russian, Conversational English
Nice to have:
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- Asterisk and/or FreeSWITCH experience
- Keepalived / VRRP
- Docker-based SIP test environments
- SIPp scenarios
- CI pipelines for config validation, routing tests, regression tests, deployment, and rollback
- Homer
- Sip3
- Deeper WebRTC production experience
- Experience with anti-fraud, billing/rating integration, or telecom product ownership
- Experience building processes for incident management, release management, and technical documentation
Why join us?
- You’ll play a key role in expanding our existing Voice, SMS and PBX business while launching new commercial directions, including IP Transit, Hosting and Connectivity.
- Own a mission-critical Voice Platform handling real production traffic
- Work with cutting-edge telecom technologies in a high-availability environment
- Influence platform architecture, engineering standards, and product direction
- Join a senior, collaborative team where your technical decisions will have a direct business impact
If your background is in VoIP, SIP, Kamailio, telecom infrastructure, or carrier-grade platforms, we’d love to hear from you.
IN8INITY is a dynamic telecommunications company delivering reliable ISP services and modern network solutions. We operate carrier-grade networks and continuously evolve our infrastructure with a strong focus on stability, scalability, and operational excellence.
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