Senior Machine Learning Engineer (Voice & Video AI)
Job description
Applied AI engineering role building real-time conversational voice and video AI agents, spanning speech-to-speech models, full-duplex audiovisual interaction, and multilingual adaptation. The engineer owns features end-to-end from model evaluation and fine-tuning through production deployment on global GPU infrastructure and customer-facing product changes.
At a glance
- Work mode
- Remote
What you'll do
- Evaluate, adapt, and deploy speech-to-speech and full-duplex video models, including expressive avatars and synchronized audiovisual generation
- Improve natural interaction through better turn-taking, interruption handling, and responses to verbal and visual cues
- Track emerging research and open-source releases, benchmark promising approaches, and fine-tune models for languages, accents, and specialized domains such as medical terminology
- Build data and evaluation pipelines that demonstrate improvements in realistic conversations
- Train and deploy models on state-of-the-art GPU hardware across Telnyx's global infrastructure
- Optimize streaming inference, GPU utilization, latency, and serving cost while maintaining conversational quality, audiovisual synchronization, and reliability
- Own features from model experiments through backend services, APIs, data models, and customer portal interfaces
- Use advanced coding agents and harnesses to implement, test, debug, and review changes across the stack
What we're looking for
- 6+ years in machine learning or related engineering, with production experience and depth in speech generation, speech-to-speech systems, video generation, or multimodal models
- Strong Python and PyTorch skills and hands-on experience adapting pretrained models
- Experience with streaming or latency-sensitive systems, rigorous evaluation, and the tradeoffs between model quality, responsiveness, reliability, and cost
- Comfortable working beyond the ML codebase—making backend and frontend changes, navigating unfamiliar repositories, and following a feature through to a working customer experience
- Actively want to work with the latest coding agents and harnesses, improve workflows as the tools evolve, and apply strong engineering fundamentals to verify and take responsibility for their output
Apply
About Telnyx
Telnyx is an industry leader building the future of global connectivity, from a private, global, multi-cloud IP network to hyperlocal edge technology delivered through intuitive APIs. The company is financially stable and profitable, investing in pioneering technologies and continuous learning and growth for its team.
Mission
Our collective vision is a world where borderless connectivity fuels limitless innovation.
Key facts
- Financially stable and profitable company
- Operates a private, global, multi-cloud IP network
- Offers hyperlocal edge technology through intuitive APIs
- Global deployment footprint with state-of-the-art GPU hardware
What they value
- Transform and modernize what's antiquated
- Automate the manual
- Solve real-world problems through innovative connectivity solutions
- Continuous learning and growth