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, 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
We seek a highly skilled and motivated Senior Software Engineer to join our Mobile Core team. The ideal candidate will have mobile core infrastructure development experience and will contribute to the development, optimisation, and maintenance of our mobile core software systems. This role requires a solid understanding of IP networking, proficiency in programming languages such as C++ and Golang, willingness to learn 3GPP protocols and a strong problem-solving mindset. Familiarity with Elixir is a significant advantage.
The opportunity
The opportunity is within the Core Wireless team. We are responsible for the design, development, deployment and maintenance of all mobile network infrastructure elements and associated backend and front-end applications to support and enhance the Telnyx Wireless product portfolio.
Your responsibilities will include:
- Design, develop, and maintain scalable and reliable software for mobile core network functionalities (e.g., EPC, 5G Core, etc.).
- Leverage a deep understanding of IP networking to troubleshoot, design, and optimise communication between components of the mobile core.
- Enhance system performance by profiling, debugging, and refactoring code in C++ and Golang.
- Work closely with cross-functional teams to deliver high-quality solutions on time. Improve engineering standards, tooling, and processes.
- Contribute to and maintain APIs across Telnyx’s Wireless stack
- Debug production issues across services and multiple levels of the stack.
- Work with engineers across the company to build new features
- Improve engineering standards, tooling, and processes.
- Create and maintain technical documentation, including design specifications, system diagrams, and API documentation.
- Understanding of relational databases, SQL.
- Knowledge of mobile wireless systems and protocols
Who we’re looking for
- Strong Innate sense of curiosity and ownership
- Strong programming experience in C++, C and Golang.
- Solid understanding of IP networking, including protocols such as TCP/IP, UDP, DNS, and BGP.
- Familiarity with mobile core architectures and protocols (e.g., LTE/4G EPC, 5G Core, Diameter, GTP etc.) and network components like MME, SGW, PGW, and UPF.
- Hands-on experience with distributed systems and multi-threaded applications.
- Knowledge of DevOps practices, including containerisation (Docker, Kubernetes) and CI/CD pipelines.
- Proficiency in SQL. Familiarity with Postgres is an advantage.
- Willingness to learn and apply new knowledge to solve problems.
- Multiple years of diverse professional software engineering experience with more than one programming language or platform. E.g. Go, Erlang, Elixir etc.
- Passion for robustness and correctness. Practical skills in automated testing.
Bonus points for
- Experience with Elixir and functional programming concepts is a significant advantage
- Familiarity with message queues like RabbitMQ and Kafka.
- Familiarity with more exotic databases/key-value stores such as ETS.
- Familiarity with Docker, Kubernetes, Consul, Jenkins, Prometheus.
- Basics of web front-end.
- Experience with IoT platforms
- Experience in the design and implementation of commercial IoT/M2M solutions
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What We Do
Telnyx delivers voice, messaging and more for applications and next-generation communications companies. Offering a communications platform that provides global carrier-grade services, Telnyx maintains an international, private IP network and grants its customers unprecedented control over their communications through its innovative portal and RESTful API.
Telnyx products include voice (elastic SIP trunking, global number search, and telephony data), programmatic messaging, wireless (mobile IoT), embedded communications (WebRTC) and automated networking. Customers provision services a la carte and pay by usage for scalable, on-demand communications.
