Sai Bhavana Gulla
Seattle,WA
Summary
Recent Master’s graduate with strong hands-on experience in Big Data technologies, specializing in PySpark and AWS cloud services. Skilled in designing and deploying scalable data pipelines, debugging production workloads, and optimizing Spark performance for large-scale data processing.
Overview
4
4
years of professional experience
Work History
Big Data Engineer
T-Mobile
12.2024 - 05.2025
- For data injection from Oracle, MySQL to S3 which can be queried using hive and spark SQL tables.
- Worked on Sqoop jobs for injecting data from MySQL to Amazon S3.
- Created hsource and destination. Validate the source and final output data.
- Used Hive external tables for querying the data.
- Use Spark Dataframe APIs to inject Oracle data to S3 and store it in Redshift. Write a script to get RDBMS data to Redshift.
- Optimize Hive and and Spark performance. and identify the errors using logs.
- Automatically scale-up the EMR Instances based on the data. Apply transformation rules on the top of DataFrames.
- To run and schedule the spark script in EMR pipes. Process Hive, csv, json, oracle, data at a time(POC).
Big Data Engineer
IBM
07.2022 - 11.2023
- For data injection from Oracle, MySQL to S3 which can be queried using hive and spark SQL tables.
- Prepared Kafka producer code to get data from web logs. Installed and managed Kafka cluster in dev environment.
- With the help of Kafka Consumer API's get data from Kafka process using Spark streaming.
- Run SQL queries on top of spark streaming.
- Spark structure streaming process using PySpark.
- Created regular expressions to clean data properly.
- Created udf to clean data, fulfill client requirements.
- Integrated spark and Cassandra with proper version compatibility.
- Automated all these activities using Oozie in AWS environment.
Data Analyst Intern
Virtusa
08.2021 - 06.2022
- Analyzed data sets to identify trends and support decision-making processes and performed data cleaning over 50+ tables to improve quality and accuracy.
- Developed 100+ SQL queries to extract, manipulate and analyze datasets for reporting purposes.
- Automated reporting using power query and advanced Excel functions in Power BI.
Education
Master of Science - Computer Science
University of Illinois At Springfield
Springfield, IL05-2025
Computer Science
Jawaharlal Nehru Technological University
India07-2018
Skills
- Tools/ Frameworks : Spark, Hadoop, Hive, Sqoop, Oozie
- Languages : Python, HiveQL and CQL
- IDE : IntelliJ IDE, VSCode, PyCharm
- Cloud : AWS, Azure
- RDBMS : MySQL, Oracle, PostgreSQL
- Power BI, Tableau, Excel, DAX Functions
- Git, Linux, Data governance
Languages
English
Full Professional
Hindi
Full Professional
Telugu
Full Professional
Timeline
Big Data Engineer
T-Mobile
12.2024 - 05.2025
Big Data Engineer
IBM
07.2022 - 11.2023
Data Analyst Intern
Virtusa
08.2021 - 06.2022
Master of Science - Computer Science
University of Illinois At Springfield
Computer Science
Jawaharlal Nehru Technological University
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