Sabyasachi Some
Data Solution Engineering Senior Specialist
Bengaluru,KA
Summary
Data Engineer with 9+ years of experience building Scalable Data Platforms, Batch & Streaming pipelines, and Cloud-Native Architectures. Expertise in AWS and Distributed systems, delivering measurable improvements in Query performance, Pipeline Latency, and Cost Efficiency across large-scale data workloads.
Overview
4
4
Certifications
11
11
years of professional experience
Work History
Data Engineering Senior Specialist
Telstra
Bengaluru
11.2023 - Current
- Implemented Medallion (Bronze, Silver, Gold) Lakehouse architecture, improving Athena/Redshift query performance by 3 to 5 times using Parquet and partitioning.
- Built serverless, event-driven architectures using AWS Batch, Fargate, ECR, and S3, reducing infrastructure overhead.
- Developed a custom partition adder utility, replacing glue crawlers across 100+ pipelines, reducing metadata costs by approximately 70%.
- Designed near-real-time streaming pipelines using Kinesis, Lambda, Firehose, and KMS encryption with 1–2 minute latency.
Data Engineering Specialist
Philips India Ltd.
Bengaluru
04.2021 - 10.2023
- Built reusable data pipelines and a scalable data lake on S3.
- Designed dimensional models in Redshift, optimized Spark on EMR pipelines, processing TB-scale datasets with a 2–3x throughput improvement.
- Orchestrated containerized pipelines using Docker and Airflow; implemented CI/CD using Azure DevOps, and SonarCloud.
- Developed Data quality frameworks using Python and Soda SQL for Adobe and Google Analytics datasets.
Senior Data Engineer
Synchrony Financials
Hyderabad
12.2019 - 03.2021
- Built reusable Python/SAS modules for high-risk merchant analysis, drove cross-database migration projects from Oracle to MySQL using JDBC, SAS as part of fraud initiatives.
- Integrated external APIs using Python, and implemented unit testing for data validation.
Data Engineer
Wipro Ltd
Kolkata
09.2015 - 11.2019
- Built large-scale ETL pipelines with Azure Data Factory, Hive, Spark SQL, and Hive UDFs to streamline data integration processes.
- Implemented partitioning, bucketing, SCDs, and performance tuning for TB-scale datasets to enhance query performance.
- Developed complex stored procedures, functions, views, and ad hoc SQL queries to support data analysis and reporting needs.
Education
B.Tech - Computer Science and Engineering
Government College of Engineering and Leather Technology
Kolkata, WB06-2015
Skills
Programming Languages & Scripting: Python, SQL, PL/SQL, Unix
Data Modeling: Dimensional Modeling, SCD, Data Warehousing
AWS: EC2, ECS Fargate, Lambda, S3, Glue, Athena, Redshift, Kinesis, Firehose, SNS, CloudWatch
Certification
AWS Certified Solutions Architect – Associate (SAA-C03)
Timeline
Data Engineering Senior Specialist
Telstra
11.2023 - Current
Data Engineering Specialist
Philips India Ltd.
04.2021 - 10.2023
Senior Data Engineer
Synchrony Financials
12.2019 - 03.2021
Data Engineer
Wipro Ltd
09.2015 - 11.2019
B.Tech - Computer Science and Engineering
Government College of Engineering and Leather Technology