Muthike Ajay
Data Scientist/ Analyst (4+ Years) | GenAI, Fraud Analytics & Healthcare AI | LLMs, Spark, Kafka | AWS & Azure
- Role
- Data Scientist Data Analyst at American Express
- Location
- Newark, DE, US
- LinkedIn followers
- 500 followers
Experience
Data Scientist Data Analyst
May 2024 — Present · DE, US
Working as a Data Scientist focused on real-time fraud analytics and scalable ML platforms. Built a Kafka- and PySpark-based fraud detection system processing millions of daily transactions with 99% detection accuracy. Designed high-performance ETL pipelines using Apache NiFi and Airflow, reducing data processing time by 40%. Developed executive-facing Tableau dashboards to track KPIs and accelerate decision-making. Applied NLP techniques for customer sentiment analysis, driving a 20% improvement in customer satisfaction, and implemented A/B testing frameworks that increased feature adoption by 12%. Built LSTM-based time-series models for market forecasting, improving investment decisions by 18%. Established Docker- and Kubernetes-based MLOps pipelines to reduce deployment time from hours to minutes, optimized large-scale storage using Hadoop and HBase, and delivered real-time credit scoring APIs on Azure, supporting instant and accurate loan risk evaluation.
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