Data Scientist

⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Data Scientist with a contract length of "unknown," offering a pay rate of "unknown," and is remote. Key skills include Python, LangChain, AWS, and experience with RAG pipelines. Familiarity with Graph Databases is preferred.
🌎 - Country
United States
💱 - Currency
$ USD
💰 - Day rate
Unknown
Unknown
🗓️ - Date discovered
April 25, 2025
🕒 - Project duration
Unknown
🏝️ - Location type
Unknown
📄 - Contract type
Unknown
🔒 - Security clearance
Unknown
📍 - Location detailed
Moline, IL
🧠 - Skills detailed
#YAML (YAML Ain't Markup Language) #S3 (Amazon Simple Storage Service) #JavaScript #Python #AWS (Amazon Web Services) #API (Application Programming Interface) #Neo4J #Graph Databases #React #FastAPI #Java #HBase #Flask #Lambda (AWS Lambda) #DevOps #Databases #Langchain #Data Science #GraphQL #Docker #OpenSearch #GIT #Deployment #Version Control
Role description
  1. Python expert ; APIs

  1. GHA ; YAML ; build/deploy pipelines ; Docker ; AWS

  1. LLMs ; Chatbots ; OpenAI ; tool calling ; LangChain ; LangGraph ; Agentic architecture ; RAG

  1. Java ; Spring

  1. React ; JavaScript

   • LLM, RAG & Agentic Framework

Key Responsibilities:

Design and implement Retrieval-Augmented Generation (RAG) pipelines using LangChain and LangGraph.

Integrate AWS Open Source Vector Databases (e.g., OpenSearch with KNN plugin or other OSS-compatible vector stores).

Handle complex query chaining, prompt orchestration, and data retrieval using custom agents and tools.

Work on graph-based knowledge representation and retrieval using technologies like Neo4j or Stardog, or similar (preferred).

Collaborate with data science and engineering teams to enable end-to-end use case delivery.

Optimize performance for multi-document, multi-hop reasoning over structured/unstructured data.

Required Skills:

   • Strong hands-on experience with Python, LangChain and LangGraph

   • Experience implementing RAG pipelines using open-source vector stores

   • Familiarity with Graph Databases and GraphQL

   • Good understanding of LLMs, embeddings, and prompt engineering

   • Experience with AWS services (S3, Lambda, ECS/EKS, etc.)

   • Familiarity with FastAPI or Flask for API deployments

   • Good to heve Version control and DevOps exposure (Git, Docker, CI/CD pipelines)