Telnyx
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.
The Opportunity
Our AI teams build highly available, low-latency microservices using modern, cloud-native technologies. This role sits within our broader AI organization and focuses on developing the platforms, services, and tooling that support AI-powered products — from inference and embeddings to APIs, data flows, and observability.
You’ll work in a fast-paced environment where reliability, performance, and usability matter just as much as innovation. While some squads work closer to inference pipelines and LLM tooling, others focus on platform foundations, troubleshooting and reliability, data systems, or observability — all critical to delivering AI in production at scale.
What You’ll Do
- Build, test, and deploy scalable microservices for AI-powered systems, including text and voice processing
- Design developer-friendly APIs, agents and internal tools that make AI easy to use across the Telnyx product ecosystem
- Contribute to AI inference, embeddings, and platform services that support real-time and low-latency workloads
- Optimize performance, reliability, and observability in production environments
- Collaborate closely with Product, Infrastructure, and ML teams to bring features from ideation to production
- Troubleshoot, debug, and support critical systems running in production
- Participate in code reviews and uphold high engineering and operational standards
Depending on the squad, your focus may lean more toward inference pipelines, platform foundations, observability, data systems, or production troubleshooting.
Who We’re Looking For
- Someone who has built something with cutting-edge AI tooling (something that has only become possible in the last 6 months, rolling from application date). It doesn’t really matter what it is; we just want to know you are building and staying up to date.
- Strong understanding of async programming, concurrency, and parallel execution
- Experience with microservice-based systems
- Excellent communication skills and the ability to work effectively across teams
Nice to Haves
- Familiarity with LLM frameworks and tools (e.g. PyTorch, Transformers, DeepSpeed, vLLM)
- Experience with distributed computing frameworks such as Ray (Ray Core, Serve, Train)
- Exposure to cloud-native stacks (Docker, Kubernetes, Prometheus, Jaeger)
- Knowledge of LLM optimization techniques (e.g. quantization, speculative decoding)
- Background in Retrieval Augmented Generation (RAG) systems
How We Hire Across Our AI Teams
Our AI Chapter is made up of multiple squads, including:
- AI application & software engineering
- Platform & infrastructure foundations
- Troubleshooting, reliability, and production support
- Data, storage, and embeddings
- Observability and performance monitoring
We hire into a shared AI engineering pipeline. During interviews, we focus on core engineering skills, system design, and problem-solving ability. Final squad alignment happens later, based on:
- Your strengths and interests
- Team needs at the time
- Where you’ll have the biggest long-term impact
This means the exact focus of the role may vary by squad, but the core expectation remains the same: building reliable, scalable AI systems in production.
Why You’ll Love It Here
At Telnyx, we’re not just building products — we’re building the future of intelligent communication. Our TelnyxAI platform empowers developers and businesses to:
- Store and serve vector embeddings at scale
- Use open-source models with our hosted inference infrastructure
- Deploy multimodal AI features across text, voice, and storage seamlessly
You’ll have the autonomy to take ownership of meaningful projects, contribute ideas that shape the product roadmap, and collaborate with talented people who care deeply about impact, quality, and long-term thinking.
#LI-KG1
#LI-BRAZIL
To apply for this job please visit job-boards.greenhouse.io.
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Working in Sao Paulo, Brazil
São Paulo is the capital city of the state of the same name, as well as the most populous city in Brazil, South America, the Americas, and in both the Western and Southern Hemispheres. The city exerts international influence in commerce, finance, culture, gastronomy, arts, fashion, technology, entertainment and media, having been listed by UNESCO's Creative Cities Network as a "City of Film" and the title of "World Capital of Gastronomy", and by the Globalization and World Cities Research Network (GaWC) as an alpha global city. It is the largest urban area by population outside Asia and the mo
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