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