Jobs · Education · Washington

Principal Applied Scientist, Real-Time Conversational AI , AGI

Amazon Science · Seattle, WA · 1 mo ago
EducationFull-time

Key job responsibilities

  • Foundation Model Scaling
  • Build and train large-scale multimodal foundation models for real-time speech and audio generation, from architecture design through production-scale training
  • Advance the scaling and efficiency of conversational modes, including the relationship between data, model size, and real time performance
  • Design model architectures informed by hardware constraints and inference requirements, working with inference engineers to ensure models are servable from inception
  • Develop training methodologies for multimodal models that jointly process and generate speech, language, and audio in real-time streaming contexts
  • Post-Training & Reinforcement Learning
  • Design and build reward models and reward functions for speech systems — capturing naturalness, fluency, conversational quality, and real-time responsiveness
  • Develop and apply reinforcement learning methods to shape conversational behavior — teaching models natural timing, responsiveness, and fluid interaction
  • Design the post-training pipeline from SFT through RL alignment, optimized for real-time multimodal outputs rather than text-only generation
  • Design evaluation frameworks that capture the quality dimensions unique to real-time conversation
  • Real-Time Perception & Generation
  • Advance the team's capabilities in real-time perception
  • Work at the intersection of model architecture and production constraints to ensure multimodal capabilities function within hard real-time latency budgets

Basic Qualifications

  • PhD in Electrical Engineering, Computer Science, Mathematics, or a related technical field
  • 10+ years of industrial or academic work building speech recognition and natural language processing systems (like commercial speech products or government speech projects)
  • Experience with large-scale foundation model training
  • Experience with multimodal model architectures that jointly process or generate across speech, text, and audio modalities
  • Strong understanding of transformer architectures and their application to speech/audio domains
  • Publishation record at top-tier venues (NeurIPS, ICML, ICLR, Interspeech, ICASSP, ACL, or equivalent)
  • Demonstrated Principal/Staff+ scientific leadership — setting research direction, mentoring researchers, influencing multi-team decisions

Preferred Qualifications

  • Hands-on experience building real-time AI systems — speech, audio, or video
  • Track record with post-training methods: reinforcement learning, reward modeling, RLHF/RLAIF, or alignment techniques applied to generative models
  • Experience with real-time interactive systems — models that handle concurrent input and output
  • Experience building speech-to-speech or audio-to-audio generative models (codec models, autoregressive audio generation)
  • Experience designing reward models or reward functions specifically for speech/audio quality, naturalness, or conversational behavior
  • Familiarity with hardware-informed model design — understanding how architecture choices affect inference latency, memory, and cost
  • Background in speech recognition, speech synthesis (TTS), or speech enhancement
  • Experience shipping research to production at scale — models serving real users, not just benchmark results
  • Contributions to open-source speech/audio ML systems or widely used research codebases
  • History of mentoring and growing research teams from individual contributors to technical leaders

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