Refocus Inc
Data Scientist / AI Specialist (Junior to Mid-Level)
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Job Description
Responsibilities
AI & NLP Solutions: Design, implement, and fine-tune NLP models, sentiment analysis pipelines, and text processing workflows.
LLM & Generative AI Applications
Utilize frameworks like LangChain to build autonomous agents, retrieval-augmented generation (RAG) pipelines, and integrate Large Language Models (LLMs) into production workflows.
ML Model Development
Develop, validate, and deploy end-to-end Machine Learning models for predictive analytics, classification, and clustering tasks.
Data Engineering & EDA
Perform exploratory data analysis, feature engineering, and data cleaning across structured and unstructured datasets.
System Integration
Work closely with cross-functional engineering teams to integrate ML and AI models into API endpoints and client applications.
Required
Experience Level: 0–4 Years
Education: Bachelor’s or Master’s degree in Data Science, Computer Science, Artificial Intelligence, Statistics, or a related field.
Core Programming
Advanced proficiency in Python and essential data science packages (Pandas, NumPy, Scikit-Learn).
AI & NLP Expertise
Hands-on experience with NLP libraries (NLTK, SpaCy, Hugging Face Transformers) and modern AI techniques.
LangChain & LLMs
Practical knowledge of building applications with LangChain, prompt engineering, vector databases (e.g., Pinecone, Chroma, FAISS), and OpenAI/Open-source LLM APIs.
Database & Querying
Solid experience writing complex SQL queries for relational databases, as well as working with NoSQL or document databases.
Mathematics & ML Fundamentals
Deep understanding of statistical analysis, probability, supervised/unsupervised learning algorithms, and model evaluation metrics.
Preferred
Familiarity with MLOps tools (MLflow, Docker) for model deployment and monitoring.
Experience with cloud platforms (AWS, GCP, or Azure).
Active portfolio featuring AI/NLP projects, Kaggle competi
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