Aakash Sai
Snowflake Data Engineer | AWS | GCP | SQL | Python | ETL/ELT | Apache Airflow | dbt | Data Modeling | Power BI | Tableau | Big Data | Machine Learning | Data Governance | Statistical Modeling
- Role
- Data Engineer (Contract) at American Express
- Location
- Dallas-Fort Worth, TX, US
- LinkedIn followers
- 500 followers
About Aakash Sai
Software Development Engineer specializing in high-concurrency FinTech systems. With…
Experience
Data Engineer (Contract)
Apr 2025 — Present · US
Architected a cloud-native AWS + Snowflake enterprise analytics platform, integrating 15+ disparate data sources with automated schema evolution — cut ingestion latency 60%.Built Airflow-orchestrated ELT pipelines for batch & incremental loads with parallel execution & dependency management — reduced processing time 40%.Optimized Snowflake performance using micro-partition pruning, clustering keys, and result caching, improving query speed 45% and lowering compute costs 20%.Designed real-time ingestion with AWS Kinesis + Lambda, processing 10M+ financial transactions/day for near-instant fraud detection.Embedded AWS SageMaker ML models into ETL workflows for predictive analytics — boosted fraud detection accuracy 18% and reduced false positives 22%.Implemented RBAC, encryption with KMS, and audit logging in Snowflake to meet SOX & GDPR compliance
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