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Lead AI Engineer / Head of R&D
Lead AI Engineer / Head of R&DThoth AI • Fremont, CA, US
Lead AI Engineer / Head of R&D

Lead AI Engineer / Head of R&D

Thoth AI • Fremont, CA, US
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Mission

To engineer the next generation of AI-Assisted Human Annotation Systems . Our goal is to scale the production of high-quality, personalized, and safety-aligned datasets.

Key Responsibilities

  • Participate in the customer solution - making process and provide guidance on data services;
  • Design and develop Agent-Assisted Annotation Workflows;
  • Build Automated Quality Evaluation Frameworks;
  • Synthetic Data Generation (SDG) Pipeline;
  • RAG & Fact-Checking Integration.

Requirements

  • Tech Stack : Mastery of Python; deep experience with LangChain, LlamaIndex , or custom Agent frameworks.
  • LLM Engineering : Proven experience manipulating LLM APIs for complex tasks (chain-of-thought construction, few-shot prompting).
  • Data Operations : Familiarity with RLHF data formats (SFT / DPO / PPO) and data versioning tools.
  • Mindset : A "Data-Centric AI" philosophy—you understand that code is static, but data is dynamic, and you build tools to manage that complexity.
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