LLM Applications Engineer

UIUncountable Inc

NEW YORK · US

$130K–$175K

Full-time

MID

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About the Role

Uncountable is seeking an LLM Applications Engineer to lead the transformation of its platform into an AI-first R&D ecosystem. The role involves designing and scaling LLM infrastructure, including RAG pipelines and AI-driven UI components, to empower scientists at Fortune 500 companies. This is a hybrid role requiring full-stack expertise and production LLM deployment experience.

Responsibilities

Design, build, and scale LLM infrastructure and user-facing AI features for the Uncountable Web Platform.
Implement and optimize RAG pipelines, vector databases, and prompt management systems.
Build intuitive, AI-driven UI components for querying and visualizing complex experimental datasets.
Integrate LLM capabilities with core SQL databases and data analysis engines.

Requirements

2+ years of software development experience with a focus on full-stack web applications.
Proven experience with LLM orchestration frameworks (e.g., LangChain, LlamaIndex, or Haystack).
Proficiency in Python and JavaScript/TypeScript.
Solid engineering fundamentals: API design, asynchronous processing, and performance optimization.