Rangaswamy C M

Data Engineering professional with hands-on experience building ETL pipelines, data validation workflows, and Power BI reporting using Azure Databricks, PySpark, and SQL. Also skilled in Generative AI, including LLMs, RAG, LangChain, LangGraph, and Hugging Face Transformers, applied to intelligent, production-ready applications.

Software Development Intern at Sony India Software Center (2026-05 – Present)

• Developed and maintained 5+ ETL pipelines using Azure Databricks, PySpark, and SQL to ingest, transform, and load data for business reporting.
• Processed and validated 100,000+ records using Delta Lake, implementing data cleansing and incremental loading to ensure accurate and reliable datasets.
• Created 15+ SQL views and supported Power BI reporting by reviewing datasets and troubleshooting production data pipelines.

Generative AI Trainee at In Time Tec (2026-02 – 2026-05)

• Trained in Generative AI tools, including LLMs, RAG, LangChain, LangGraph, Hugging Face Transformers, and vector databases (FAISS, ChromaDB), completing 4 hands-on projects.
• Engineered a document question-answering system with RAG, combining vector search and LLM inference to answer queries across 200+ documents at 85% accuracy.
• Applied prompt engineering and embedding generation techniques to deliver 2 production-ready document processing pipelines, lowering manual review time by 40%.

B.E. in Electronics and Communication Engineering – Atria Institute of Technology (2021-12 – 2025-05)