---
title: 'Software Engineer, Elixir - Telephony at Telnyx'
canonical: 'https://feeny.ai/job/software-engineer-elixir-telephony-telnyx-remote-mgjb2ma7q5qj'
type: 'job'
last_seen: '2026-10-31'
---

# Software Engineer, Elixir - Telephony at Telnyx

- **Company:** Telnyx
- **Location:** Remote
- **Work type:** remote
- **Posted:** 2026-10-26
- **Last confirmed live:** 2026-10-31
- **Apply:** https://job-boards.greenhouse.io/telnyx54/jobs/8044090003

## Job description

## About Telnyx

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](https://telnyx.com/our-network), to bringing [hyperlocal edge](https://telnyx.com/resources/about-edge-connectivity) 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.

The Opportunity

As an Elixir Telephony Engineer at Telnyx, you will create and deploy groundbreaking applications that are part of the Telnyx Telephony platform. Projects often start with a kickstart question and our Engineers lead the way in developing a solution, from high-level system design and prototyping to application development and data integration. As a Telnyx software engineer, you leverage everything around you: Telnyx products, open source technologies, and anything you and your team can build to drive real impact.

AI-assisted engineering is an integral part of how we work. We actively use AI agents to accelerate software development, troubleshoot complex issues, and assist with deployments and operational workflows. We leverage our own Telnyx Inference product to power AI-driven engineering workflows, continuously exploring new ways to improve developer productivity, code quality, and operational efficiency.

You work with users around the globe, where you help our customers by solving their communications challenges. Each mission presents different challenges, from the regulatory environment to the nature of the data to the user population. You will work to accommodate all aspects of an environment to drive real technical outcomes.

You Will:

- Design, build, and maintain APIs, services, and systems across Telnyx’s telephony engineering teams.
- Work with engineers across the company to build new telephony features at large-scale.
- Improve engineering standards, tooling, and processes.
- Identify, optimize and resolve issues related to latency, scalability, and performance of core telephony infrastructure.

## What We're Looking For

- Have 2+ years of professional software development experience with the Elixir programming language.
- Have deep knowledge of microservice architecture patterns and anti-patterns.
- Understand the challenges inherent in concurrent and distributed programming.
- You take a thoughtful approach to decision making, knowing when to move fast and when to long-term optimize.
- You want to work in a fast-paced, product-driven environment.
- You keep up to date with the latest technologies and patterns, and enjoy sharing what you’ve learned.

Bonus Points For

- SIP and other VoIP related protocols and technologies like RTP, WebRTC, ICE, STUN, TURN
- Consul, Docker, Kubernetes, Github Actions, Ansible, Grafana, Graylog, Prometheus

## About Telnyx

## Core Business
- **Primary industry**: Telecommunications / AI Infrastructure
- **Target customers**: B2B – developers, enterprises, and communications service providers building voice AI agents, programmable voice, messaging, and IoT solutions.
- **Mission or purpose**: To own the full stack from carrier network to AI inference so that customers can build real-time voice AI agents with no handoffs, no lag, and carrier-grade reliability.

## Products & Services
- **Voice AI Agents**: Carrier-native voice AI with bundled STT (speech-to-text), LLM inference, and TTS (text-to-speech) on a Tier-1 network. Priced at $0.05/min for the full bundle.
- **SIP Trunking**: Elastic SIP trunking for enterprise voice, outbound from $0.005/min, inbound from $0.0035/min.
- **Programmable Voice & Messaging (SMS/MMS)**: RESTful APIs for call control, conferencing, recording, and SMS/MMS from $0.004 per outbound message.
- **AI Inference**: Edge-deployed GPU inference for voice and text AI, with per-token pricing or x402 pay-per-call.
- **Wireless (Mobile IoT)**: Programmable eSIM and roaming for IoT devices.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed.
- **Key Metric**: Annual revenue estimated at $16.0M (LinkedIn); total funding raised $2.1M.
- **Notable Investors/Partners**: Not publicly disclosed (only 2 prior funding rounds mentioned, lead investors unknown).
- **Growth Signals**: Headcount grew 21.5% YoY to ~300 employees; 121 active job postings (monthly job postings +27.4%, quarterly +202.5%, yearly +830.8%); operates in 34 countries; customer base includes 14,000+ industry-leading companies (Alibaba, Neon Health, etc.).

## Competitive Advantages
- **Full-stack ownership**: Telnyx owns its carrier network (CLEC licenses, STIR/SHAKEN A-level) and co-locates GPU compute at the telco edge, bypassing the public internet for low-latency voice AI.
- **Single vendor for voice AI**: Bundles SIP, STT, LLM, and TTS – no need to stitch together multiple providers.
- **Compliance by default**: Holds HIPAA, SOC 2 Type II, GDPR, ISO 27001, and PCI DSS certifications; built-in programmatic compliance (10DLC/KYC).
- **Private global network**: Operates a private IP network across 40+ countries, ensuring deterministic routing and high-quality audio.

## Strategic Focus
- **Voice AI agents**: Deep investment in real-time conversational AI infrastructure, including machine-readable evaluation endpoints and benchmark tools for developers.
- **Global expansion**: Continues to add PoPs and data center locations (Amsterdam, Dublin, Warsaw, Bangalore, etc.) to reduce latency.
- **AI-native platform**: Building autonomous orchestration for agent-to-agent workflows and inference at the edge.

## Why Work Here
- **Work flexibility**: Remote-first with in-person options in Austin, Amsterdam, Dublin, and Warsaw. Many roles are fully remote.
- **Culture & perks**: Unlimited personal time off, healthcare benefits (US, UK, Ireland), 401(k) matching (US), equity, commuter benefits, free snacks/drinks in offices.
- **Growth opportunities**: Strong promotion policies with customized development tracks; apprenticeship programs; job training and conferences.
- **Engineering culture**: Heavy investment in Elixir, Python, and AI infrastructure; open-source contributions (GitHub, npm); collaborative teams across time zones.
- **Global team**: 300+ employees across 34 countries with a diverse, inclusive hiring approach.

## Sources
1. [Telnyx Official Website](https://telnyx.com/)
2. [Telnyx Careers Page](https://telnyx.com/careers)
3. [LinkedIn Company Profile](https://www.linkedin.com/company/telnyx)
4. [Built In Company Profile](https://builtin.com/company/telnyx)
5. [Greenhouse Job Board](https://job-boards.greenhouse.io/telnyx54)

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