Applied Scientist II, Alexa International Tech

Technology, Data & Digital · Data, AI & Analytics · Data Science · Machine Learning · Artificial Intelligence

In short

Alexa International seeks an Applied Scientist in Bengaluru, India, to develop advanced technologies using LLMs, ASR, TTS, and Speech to Speech models, leveraging deep learning and generative models expertise. The role involves analyzing customer behavior, building evaluation metrics, and advancing multilingual speech systems, with opportunities for publication.

Responsibilities

  • Develop novel algorithms and modeling techniques for LLMs, ASR, TTS, and Speech to Speech models.
  • Analyze and model customer behavior and experience based on large-scale data.
  • Build novel online & offline evaluation metrics and methodologies for multimodal personal digital assistants.
  • Drive research in ASR, TTS, and Speech-to-Speech (S2S) model training and fine-tuning.
  • Advance multilingual speech recognition and synthesis using LLM-based architectures.
  • Fine-tune/post-train LLMs using techniques like SFT, DPO, RLHF, and RLAIF.
  • Collaborate with partner teams on evaluation frameworks and post-training methodologies.
  • Communicate solutions clearly to partners and stakeholders.
  • Contribute to the scientific community through publications and community engagement.

Requirements

  • 3+ years of building machine learning models for business application experience.
  • PhD, or Master's degree and 4+ years of CS, CE, ML or related field experience.
  • Experience in patents or publications at top-tier peer-reviewed conferences or journals.
  • Experience in algorithms and data structures, parsing, numerical optimization, data mining, parallel and distributed computing, high-performance computing.
  • Experience programming in Java, C++, Python or related language.
  • Deep expertise in ASR/TTS architectures, end-to-end speech models, and LLM integration with speech systems.

Desired Qualifications

  • Experience using Unix/Linux.
  • Experience building machine learning models or developing algorithms for business application.
  • Deep expertise in state-of-the-art LLM architectures, training, evaluation, and post-training techniques (SFT, DPO, RLHF, RLAIF).

Benefits

  • Inclusive culture that empowers Amazonians to deliver the best results.
  • Workplace accommodation and adjustment support for individuals with disabilities.
#Alexa#International#Tech#Applied Scientist#LLM#ASR#TTS#Speech to Speech#deep learning#generative models#machine learning#natural language understanding#multimodal#Bengaluru#India

Company

Amazon

Job Posted

1 month ago

Employment Type

Full Time

WorkMode

On Site

Experience Level

Mid-Senior

Locations

Bengaluru, India

Qualification

Doctoral, Master

Applicants

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