VoIP Engineer - Remote New Brazil; Argentina; Mexico

Telnyx; Argentina; Remote; BRL 180,000 - 240,000; Full time

Job summary

Telnyx seeks a VoIP Engineer to design and guide telephony features across the platform, triage escalations, and coordinate interconnections with partners. You’ll work with Kamailio/OpenSIPS and other open-source tools while ensuring robust monitoring and diagnostics.

You’ll collaborate with global users and engineering teams to deliver reliable communications solutions and scalable telephony services across cloud-based infrastructure.

Qualifications

• Degree in Computer Science, IT, Telecommunications or similar is required.
• Strong understanding of IP telephony, VoIP and related protocols (SIP, RTP, RTCP, ISUP, TLS, STUN, TURN, WebRTC).
• Experience with Open Source VoIP apps and related tools (Kamailio, OpenSIPS, FreeSWITCH, RTPEngine, Asterisk, Wireshark, sngrep, Homer).

Responsibilities

• Understand how all Telephony services work and how they integrate with the platform.
• Operate, maintain, expand and support SIP proxies based on Kamailio or OpenSIPS.
• Handle level 3 troubleshooting escalations and triaging.
• Analyze telephony traffic patterns and identify issues and anomalies.
• React to critical alerts to rapidly restore full service.
• Troubleshoot and resolve voice and network protocol issues.
• Interface with partner organizations for interconnections and expansions.
• Design, build, test, deploy and maintain monitoring and logging for Telephony applications.
• Coordinate system maintenance and deployment events.

Skills

VoIP technology

IP telephony

SIP

WebRTC

RTP

RTCP

SIPS/TLS

ISUP

Kamailio

OpenSIPS

FreeSWITCH

RTPEngine

Asterisk

Wireshark

sngrep

Homer

Linux

Docker

Kubernetes

Ansible

Jenkins

Python

Go

Elixir

Education

Degree in Computer Science, Information Technology, Telecommunications or similar

Tools

Kamailio

OpenSIPS

FreeSWITCH

RTPEngine

Asterisk

Wireshark

sngrep

Homer

Docker

Kubernetes

Ansible

Jenkins

Job description

Telnyx is an industry leader that's not just imagining the future of global connectivity—we're building it. From architecting and amplifying the reach of a private, global, multi-cloud IP network , to bringing hyperlocal edge technology right to your fingertips through intuitive APIs, we're shaping a new era of seamless interconnection between people, devices, and applications.

We're driven by a desire to transform and modernize what's antiquated, automate the manual, and solve real-world problems through innovative connectivity solutions. As a testament to our success, we're proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.

Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us, you can be part of laying the foundations for this interconnected future. We're currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.

About You

As a VoIP Engineer you understand how the Telnyx Telephony Engine works as whole, while also being able to identify each underlying service and its purpose. You use this knowledge plus your experience working with VoIP technologies to design new features and guide software developers on their implementation. You assist other teams by triaging escalated issues and then working with all the involved parties until they are resolved. You are the subject matter expert for all topics that are telephony related, and when you don't know the answer you will know who to ask.

The Opportunity

You work with users around the globe, where you help by solving their communications challenges. You’ll also get to work with other engineers to build delightful features that span various parts of the system, as well as our business, sales, and operations teams to understand and solve our users’ pain points.

We’re looking for people with a strong background in VoIP technologies and interest in building successful products or systems; you’re comfortable in dealing with lots of moving pieces; you have exquisite attention to detail; and you’re comfortable learning new technologies and systems.

• Understand how all Telephony services work and how they are integrated to the platform.
• Operate, maintain, expand and support SIP proxies based on Kamailio or OpenSIPS applications.
• Handle level 3 troubleshooting escalations and triaging.
• Analyze telephony traffic patterns and identify issues and anomalies.
• React to critical alerts in order to rapidly return to a full-service state.
• Troubleshoot and resolve voice and network protocol communication issues.
• Interface with partner organizations for interconnections and expansions.
• Design, build, test, deploy and maintain monitoring, alerting, QA and logging tools for Telephony applications.
• Coordinate system maintenance and deployment events.

Who we're looking for

• A degree in Computer Science, Information Technology, Telecommunications or similar.
• Strong understanding of IP telephony (VoIP), TCP/IP Networks and related protocols (SIP, RTP, RTCP, ISUP, TLS, STUN, TURN, WebRTC).
• Experience with Open Source VoIP applications such as Kamailio, OpenSIPS, FreeSWITCH, RTPEngine, Asterisk and open source tools such as Wireshark, sngrep and Homer.
• Experience with Linux, Open Source tools and shell scripting.
• Experience with containers and automation/orchestration tools such as Docker, Ansible, Jenkins, Kubernetes.
• Familiarity with programming in Python, Elixir or Go are a plus.