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Optum Global Solutions
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Import vs direct query
Importing data involves transferring data from a source to a destination, while direct query involves querying data directly from the source.
Importing data can be useful for offline analysis or data transformation, while direct query is more suitable for real-time analysis.
Importing data may require additional storage space, while direct query does not necessarily require storage.
Importing data ca...
Power BI and Tableau are both powerful data visualization tools, but they have some key differences.
Power BI is more user-friendly and integrates well with Microsoft products.
Tableau is known for its advanced analytics capabilities and flexibility in data visualization.
Power BI is often preferred by organizations already using Microsoft products, while Tableau is popular among data analysts and data scientists.
Tableau ...
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posted on 8 Oct 2024
I applied via Approached by Company and was interviewed in Sep 2024. There were 3 interview rounds.
Performance optimization in Spark involves tuning configurations, optimizing code, and utilizing best practices.
Tune Spark configurations such as executor memory, number of executors, and shuffle partitions
Optimize code by reducing unnecessary shuffling, using efficient transformations, and caching intermediate results
Utilize best practices like using data partitioning, avoiding unnecessary data movements, and leveragi...
Transformations and actions are key concepts in Apache Spark for processing data.
Transformations are operations that create a new RDD from an existing one, like map, filter, and reduceByKey.
Actions are operations that trigger computation and return a result to the driver program, like count, collect, and saveAsTextFile.
I have worked at ABC Company as a Data Engineer, where I led projects on data pipeline development and optimization.
Led projects on data pipeline development and optimization
Worked at ABC Company as a Data Engineer
posted on 28 Oct 2024
Developing a real-time monitoring system for a large-scale financial trading platform
Implemented complex algorithms to analyze market data in real-time
Designed a scalable architecture to handle high volume of transactions
Worked closely with traders and analysts to understand requirements and make necessary adjustments
Managed a team of developers to ensure project milestones were met
Sql, pyhton, azure databricks, azure data factory
I applied via Campus Placement
It was communication assesment round.It had good set of questions
I applied via Campus Placement and was interviewed in Feb 2023. There were 3 interview rounds.
Verbal.coding. c programing. Reasoning. Logical questions. Phargraf. Sa
posted on 27 Feb 2024
I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.
To automate REST API calls using ROBOT Framework.
posted on 25 Dec 2024
Basic coding, logic implementation
posted on 1 Jul 2024
I applied via Approached by Company and was interviewed in Jun 2024. There was 1 interview round.
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