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Karumi (YC F25) Logo

AI/ML Engineer

Karumi (YC F25)

Salary not specified
Dec 4, 2025
San Francisco, CA, US
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Build the core intelligence behind our platform, creating agents that can listen, speak, navigate interfaces, and interact naturally with users in real-time, solving real problems by balancing innovation with pragmatic constraints.

Requirements

  • Production experience with LLMs (OpenAI, Anthropic, or open-source models)
  • Hands-on work with speech AI (STT/TTS systems like Deepgram, ElevenLabs, Whisper)
  • Experience with browser automation (Playwright, Puppeteer, Selenium) or computer vision
  • Strong Python skills with async programming and real-time systems
  • Understanding of prompt engineering, retrieval systems, and agent frameworks
  • Ability to debug complex AI behaviors and build observability tools
  • Software engineering fundamentals for production AI systems

Responsibilities

  • Build and optimize voice AI systems using speech-to-text and text-to-speech models
  • Design browser agents that navigate, understand, and interact with web applications
  • Implement browser automation with computer vision and DOM understanding
  • Engineer prompt systems and LLM workflows for consistent, intelligent behavior
  • Create evaluation frameworks to measure voice quality, agent accuracy, and user experience
  • Integrate multimodal AI - combining voice, vision, and language understanding
  • Build real-time AI pipelines where latency and reliability are critical

Other

  • We sponsor visas for qualified candidates.
  • Visa sponsorship available