OBUL REDDY LEKKALA

Mid-level Data Scientist specializing in predictive modeling, NLP/LLMs, and RAG search systems

CDS GlobalUniversity of MassachusettsDes Moines, IA6 Years ExperienceMid LevelWorks On-Site

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About

Built production LLM/RAG platforms for financial services to enable natural-language Q&A over large policy/compliance document sets stored in Snowflake and SharePoint. Strong in MLOps and orchestration (Airflow, ADF, Step Functions, MLflow) and in solving real production issues like stale embeddings and model performance, including an incremental Snowflake Streams sync that cut processing time from hours to minutes.

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Key Strengths

Built and deployed production RAG-based document intelligence for financial services
Resolved Snowflake–Databricks data consistency and stale-embedding issues via incremental sync using Snowflake Streams (reduced processing from hours to minutes)
Performance optimization of large embedding models on Databricks using mixed precision inference
End-to-end ML/LLM pipeline orchestration across Airflow/ADF/Step Functions/Databricks Jobs with SLAs, retries, and lineage
Structured reliability approach for agentic/RAG workflows (modular design; unit/scenario/adversarial testing; retrieval/grounding validation before LLM layer)
Cross-functional delivery with product, compliance, data engineering, DevOps, QA, and domain experts; integrated CI/CD and cloud deployment patterns (AKS/SageMaker)

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Experience

Data ScientistCDS Global · Feb 2023 – Present

Machine Learning EngineerTake-Two Interactive · Feb 2021 – Nov 2022

Data Platform EngineerApps Associates · Jul 2019 – Dec 2021

Education

University of Massachusettsmaster, Data Science (2024)

Lovely Professional Universitybachelor, Electronics & Communication Engineering (2020)

Skills

A/B Testing Amazon CloudWatch Anomaly Detection AWS AWS CodePipeline AWS Glue AWS Lambda AWS Step Functions Batch Processing BERT CI/CD Clustering Data Modeling Data Validation Databricks

Languages

English

Certifications

Certified Multicloud Architect Professional - OracleCertified Generative AI Professional - OracleOracle Fusion Data Intelligence - OracleIBM Generative AI Fundamentals Specialization - CourseraIBM Generative AI Engineering with LLMs Specialization - CourseraData Science Professional Certificate - CourseraGenerative AI for Everyone - LinkedIn LearningMachine Learning Specialization - CourseraFundamentals of Machine Learning and Artificial Intelligence - Coursera