About Telnyx

Telnyx is a global connectivity platform and partner that powers carrier-grade services on an in-house built, private, cloud-agnostic IP network. We power voice, messaging, video, wireless, numbering, fax, security, and networking solutions for businesses all around the world. Whether we’re processing mission-critical communications, hosting enterprise-grade contact centers, or powering simple in-app messaging and calling, our APIs make secure, high-fidelity connectivity the new standard. We’re working to democratize worldwide access to real-time communications over the internet.

The Role

As a FreeSWITCH Engineer at Telnyx you will be in charge of operating and expanding the core of the Telnyx Telephony Platform, which is a B2BUA service based in the FreeSWITCH open-source application. You will join a team of FreeSWITCH Engineers that lead the way in developing a solution, from high-level system design and prototyping to application development and data integration. As a Telnyx engineer you leverage everything around you: Telnyx products, open source technologies, and anything you and your team can build to drive real impact.

You work with users around the globe, where you help our customers 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.

In This Role You Will

  • Develop and maintain code for voice services and real time communications
  • Own all aspects of the FreeSWITCH based B2BUA service, from the design of new features, to the implementation, QA, deployment to production, troubleshooting and maintenance.
  • Integrate the B2BUA service with other services that are part of the Telephony Engine by interfacing with other teams at Telnyx.
  • Identify, optimize and resolve issues related to latency, scalability and performance.
  • Handle escalations from other teams about B2BUA related issues.
  • Be the subject matter expert for any FreeSWITCH related question coming from different parts of the company.

Your background

  • 3+ years of professional software development experience
  • 1+ years of professional software development experience with the open-source application FreeSWITCH.
  • 1+ years of professional software development experience with C or C++ building multi-threaded and highly performant client/server applications.
  • Familiarity with Kamailio, RTPEngine, Asterisk or other major VoIP projects.
  • An understanding of IP telephony and Networking protocols (SIP, RTP, RTCP, T.38, ISUP, TLS, STUN, TURN, WebRTC).
  • Experience designing, building and maintaining distributed applications at scale.
  • Familiarity with containers and automation/orchestration tools such as Docker, Ansible, Jenkins, Kubernetes.
  • Experience leveraging modern libraries such as Boost.
  • Familiarity with automake and autoconf build systems.
  • Deep knowledge of microservice architecture patterns and anti-patterns. 
#LI-JB1 #LI-REMOTE

Bring Your Authentic Self to Telnyx

Telnyx is committed to building a team full of diverse perspectives, various backgrounds and different minds. We believe diversity drives innovation. We are committed to building a culture where difference is valued and creating avenues of equity for underserved groups. While we are still a work in progress, we are actively seeking folks who are  passionate about building a place of belonging for everyone. 

How we work

We’re a connectivity and networking leader, with industry experts and engineers who have built our cloud-agnostic platform in-house, from the ground up. We’re a concierge customer success team and a 24/7 support team. We’re a communications partner, focused on agile innovation, not a telecom slogged in antiquated processes and anti-competitive regulation. We’re an enterprise-grade conversation enabler, powering the global, enriched, multi-channel communications that today’s customers demand.

We're looking for people with passion, grit, and integrity. We believe in transparency, proactivity, and mutual respect. We provide the high-grade tools that help you do your best work, and keep up the collaborative habits that help everyone stay in the loop. No matter where you're based or which team you’re on, you’re plugged in, supported, and helping to shape the future of communications. 

Perks

  • Unlimited Paid Time Off (PTO) for full-time and contract employees
  • Annual professional development budget
  • Home Office Setup Perk
  • Volunteer Days
  • Top-notch equipment
  • Fitness & wellness stipend
  • Monthly home cleaning stipend

You're encouraged to apply even if your experience doesn't precisely match the job description. Your skills and passion will stand out—and set you apart—especially if your career has taken some extraordinary twists and turns. At Telnyx, we welcome diverse perspectives, rigorous thinkers and assumption challengers. Are you ready to join us?

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