Koti Sandeep
Full Stack Java Developer|Python|Bootstrap|Javascript|Spring|TypeScript|JIRA|Maven|PL/SQl
- Role
- Data Engineer at Cigna Healthcare
- Location
- Charlotte, NC, US
- LinkedIn followers
- 500 followers
About Koti Sandeep
Azure Data Engineer with over 5+ years of experience building scalable data platforms and…
Experience
Data Engineer
Oct 2025 — Present · Charlotte, NC, US
managed end-to-end design and deployment of cloud-native data pipelines on AWS, supporting real-time and batch workflows for credit card risk and loss forecasting, improving analytics delivery time by 35% enabling same-day decisioning.Developed and optimized large-scale PySpark & Spark SQL workloads on Amazon EMR, processing multi-terabyte datasets with billions of records; reduced processing time by up to 50% via query tuning, dynamic partitioning, and parallel execution strategies.Architected event-driven pipelines handling 50M+ daily transactions, cutting Python/SQL execution time by 40%, accelerating model training and business reporting cycles.Modernized legacy Teradata workflows into orchestrated PySpark + Airflow pipelines, reducing data refresh cycles from 6 hours to 2.5 hours and enabling same-day analytics for forecasting and risk dashboards.Designed and implemented automated data validation & reconciliation frameworks with Python, PySpark, and Airflow, eliminating 120+ manual QA hours/month and improving data accuracy from 94% to 99.2%.Built and maintained dimensional data models in Snowflake, implementing SCD Type 2 and CDC patterns with full data governance, improving data consistency by 25% across analytics and risk systems.Architected AI/ML-ready data infrastructure supporting LLM & RAG-based applications, including structured/unstructured data pipelines, retrieval systems on Snowflake/Hive, and production-grade LLM API integrations with optimized batching and caching.Implemented robust monitoring and operational best practices using CloudWatch, EventBridge, and custom alerting, ensuring production stability, SLA compliance, and secure enterprise data access.
Education
Vignan's Foundation for Science, Technology & Research
Bachelor's degree
2016 — 2020
New England College
Master's degree
2021 — 2023
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