Viswitha M

Viswitha M

SENIOR DATA ENGINEER
Dallas County , Texas , United States of America (USA)
English

نبذة عني

Senior Data Engineer with 6+ years architecting enterprise-scale cloud data platforms across banking,
healthcare, and retail. Deep expertise in Azure Databricks lakehouse architecture, real-time streaming,
and regulatory…

الخبرة

SENIOR DATA ENGINEER

U.S. Bank, Minneapolis, MN
Jan 2022 - حتى الآن · 4 سنوات 6 أشهر

Architected Azure Databricks Medallion lakehouse across retail, commercial, and wealth lines.
Cut data latency from 24 hrs to under 15 min.
Built 120+ PySpark and ADF pipelines integrating 25 source systems (core banking, CRM, trading).
Sustained 99.7% SLA across 38 downstream consumers.
Delivered PCI-DSS tokenization framework using Azure Key Vault and column-level encryption.
Achieved zero audit findings in 2023 and 2024.
Automated DFAST regulatory reporting for Federal Reserve stress testing.
Reduced report prep from 5 days to 4 hours.
Adopted Delta Lake ACID and time-travel features.
Cut Finance reconciliation effort by 70%.
Optimized Spark execution plans and cluster configs.
Drove 40% cost reduction ($280K/yr) with 55% higher throughput.
Introduced dbt transformation layer.
Raised SQL test coverage from 12% to 85%.
Mentored 3 junior engineers.

SENIOR DATA ENGINEER

U.S. Bank Minneapolis, MN · Minneapolis , Minnesota , United States of America (USA)
Dec 2021 - حتى الآن · 4 سنوات 6 أشهر

Architected lakehouse processing 4.2B daily transactions and drove $280K/year in cloud cost savings., Architected Azure Databricks Medallion lakehouse across retail, commercial, and wealth lines — cut data latency from 24 hrs to under 15 min., Built 120+ PySpark and ADF pipelines integrating 25 source systems (core banking, CRM, trading); sustained 99.7% SLA across 38 downstream consumers., Delivered PCI-DSS tokenization framework using Azure Key Vault and column-level encryption — zero audit findings in 2023 and 2024., Automated DFAST regulatory reporting for Federal Reserve stress testing — reduced report prep from 5 days to 4 hours., Adopted Delta Lake ACID and time-travel features — cut Finance reconciliation effort by 70%., Optimized Spark execution plans and cluster configs — drove 40% cost reduction ($280K/yr) with 55% higher throughput., Introduced dbt transformation layer and raised SQL test coverage from 12% to 85%; mentored 3 junior engineers.

DATA ENGINEER II

Optum (UnitedHealth Group), Eden Prairie, MN
Mar 2020 - Dec 2021 · 1 سنة 9 أشهر

Engineered HIPAA-compliant pipelines processing 850M+ medical claims annually from 300+ payer and provider partners into Azure Synapse for population health analytics.
Built real-time member eligibility platform on Event Hubs and Stream Analytics.
Handled 120K events/sec.
Reduced eligibility errors by 34%.
Implemented Data Vault 2.0 enterprise claims warehouse with full historization.
Passed all bi-annual CMS compliance reviews.
Developed PHI de-identification pipeline (HIPAA Safe Harbor) on Databricks.
Enabled secure data sharing with external research partners.
Productionized 8 ML models for fraud detection and readmission risk using PySpark feature engineering.
Served 2M+ members.

DATA ENGINEER II

Optum (UnitedHealth Group) Eden Prairie, MN · Eden Prairie , Minnesota , United States of America (USA)
Feb 2020 - Nov 2021 · 1 سنة 9 أشهر

Delivered HIPAA-compliant pipelines processing 850M+ claims/year and cut pipeline runtime by 52%., Engineered HIPAA-compliant pipelines processing 850M+ medical claims annually from 300+ payer and provider partners into Azure Synapse for population health analytics., Built real-time member eligibility platform on Event Hubs and Stream Analytics — handled 120K events/sec and reduced eligibility errors by 34%., Implemented Data Vault 2.0 enterprise claims warehouse with full historization — passed all bi-annual CMS compliance reviews., Developed PHI de-identification pipeline (HIPAA Safe Harbor) on Databricks — enabled secure data sharing with external research partners., Productionized 8 ML models for fraud detection and readmission risk using PySpark feature engineering — served 2M+ members.

DATA ENGINEER I

Walmart Global Tech India, Bangalore, India
Jul 2018 - Jan 2020 · 1 سنة 6 أشهر

Led on-premises to ADLS Gen2 migration of retail sales, inventory, and supply chain data via Azure Data Factory.
Built PySpark ETL pipelines integrating data from 80+ store systems, e-commerce platforms, and third-party logistics partners to power omnichannel analytics.
Developed 200-rule automated data quality framework (completeness, accuracy, referential integrity).
Cut downstream reporting errors by 45% across merchandising teams.
Delivered self-service analytics layer on Azure Synapse for category managers and supply chain analysts.
Reduced ad-hoc data requests to engineering by 60%.
Designed star-schema dimensional model for sales, inventory, and pricing analytics supporting 5,000+ store locations and 100M+ weekly transactions.

DATA ENGINEER I

Walmart Global Tech India Bangalore, India · Adugodi , Karnataka , India
Jun 2018 - Dec 2019 · 1 سنة 6 أشهر

Migrated 15 TB of retail data to Azure 3 weeks ahead of schedule, supporting 5,000+ stores., Led on-premises to ADLS Gen2 migration of retail sales, inventory, and supply chain data via Azure Data Factory., Built PySpark ETL pipelines integrating data from 80+ store systems, e-commerce platforms, and third-party logistics partners to power omnichannel analytics., Developed 200-rule automated data quality framework (completeness, accuracy, referential integrity); cut downstream reporting errors by 45% across merchandising teams., Delivered self-service analytics layer on Azure Synapse for category managers and supply chain analysts — reduced ad-hoc data requests to engineering by 60%., Designed star-schema dimensional model for sales, inventory, and pricing analytics supporting 5,000+ store locations and 100M+ weekly transactions.

المهارات

إنفورماتيكا بوستجريس كيو إل بايثون (لغة برمجة) الامتثال التنظيمي خادم SQL أزور حوكمة البيانات نمذجة البيانات جودة البيانات جراف كيو إل (GraphQL) هيف (Hive) نومباي (مكتبة لغة Python) أولاب باي سبارك سكالا تي إس كيو إل التكامل المستمر / التسليم المستمر كونفلوينس دوكر كوبرنيتيس مونجو دي بي ضبط الأداء بي إل/إسكيوإل باور شل إس 3 (خدمة تخزين البيانات على الإنترنت) تيرافورم Databricks Azure Data Factory Azure Synapse Analytics ADLS Gen2 Event Hubs Azure Stream Analytics Microsoft Purview Azure Key Vault AKS AWS AWS Glue EMR Amazon Redshift GCP BigQuery Dataflow Apache Spark Delta Lake Delta Live Tables Apache Kafka Apache Airflow Apache Hudi Structured Streaming Change Data Capture (CDC) dbt SSIS Airflow DAGs Databricks Workflows Pandas SQL Spark SQL Bash Snowflake Azure SQL Cosmos DB Medallion Architecture Data Vault 2.0 Star Schema Snowflake Schema Dimensional Modeling Slowly Changing Dimensions OLTP Normalization Parquet Avro ORC Delta JSON XML REST APIs HL7 FHIR Git GitHub Actions Azure DevOps CI/CD JIRA HIPAA PCI-DSS SOC 2 GDPR Data Lineage Data Cataloging Unity Catalog Role-Based Access Control Cost Optimization DataOps Schema Evolution ETL ELT Real-Time Streaming Lakehouse Azure Databricks Azure Event Hubs Azure Purview AWS S3 AWS EMR Google BigQuery Google Dataflow Cloud Data Architecture Lakehouse Design Medallion Design Change Data Capture Stream Analytics Purview Key Vault Glue Redshift
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