Optum Global Solutions Senior Software Engineer Interview Questions, Process, and Tips

To get the 3rd highest salary, you can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.

• Use a SQL query to select distinct salaries in descending order.

• Use the 'LIMIT' keyword to limit the results to 3.

• Use the 'OFFSET' keyword to skip the first 2 highest salaries.

• Example: SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;

The inner join of two tables with duplicate values results in a combined set of common values.

• Inner join combines rows from both tables where the key columns match

• In this case, the result would be [1,1,1,1,1,1] as all values are common in both tables

Developed a web application for tracking and managing project tasks

• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database management

• Incorporated authentication and authorization features for user security

SQL is a relational database management system, while NoSQL is a non-relational database management system.

• SQL databases are table-based, NoSQL databases are document, key-value, graph, or wide-column stores

• SQL databases use structured query language for defining and manipulating data, NoSQL databases use different query languages

• SQL databases are vertically scalable, NoSQL databases are horizontally scalable

• SQL databa...read more

NoSQL is better for handling unstructured data, providing scalability and flexibility.

• NoSQL databases are better suited for handling unstructured data like social media posts, user-generated content, and IoT data.

• NoSQL databases provide better scalability as they can easily distribute data across multiple servers, allowing for horizontal scaling.

• NoSQL databases offer more flexibility in terms of data model, allowing fo...read more

Designed and implemented a real-time data pipeline for processing and analyzing user behavior data.

• Used Apache Kafka for real-time data streaming

• Utilized Apache Spark for data processing and analysis

• Implemented data transformations and aggregations using Scala

• Stored processed data in a data warehouse like Amazon Redshift

• Built monitoring and alerting systems to ensure data pipeline reliability

I would address the conflict directly and professionally, seeking to understand the root cause and find a mutually beneficial solution.

• Schedule a private meeting with the manager to discuss the conflict

• Listen actively to the manager's perspective and express your own calmly

• Seek to find common ground and propose potential solutions

• If necessary, involve HR or a mediator to help resolve the conflict

I love to spend my free time hiking, reading, and trying out new recipes in the kitchen.

• Hiking in the mountains or local trails

• Reading fiction and non-fiction books

• Experimenting with new recipes and cooking techniques

Incident, problem, and change management are processes used in IT to handle unexpected events, identify root causes of issues, and implement modifications to systems.

• Incident management involves responding to and resolving unexpected events that disrupt normal operations, such as system crashes or network outages.

• Problem management focuses on identifying the root causes of recurring incidents to prevent them from happe...read more

Incident is an unplanned event that disrupts normal operations, while a problem is the underlying cause of one or more incidents.

• Incident is a specific event that causes disruption, problem is the root cause of incidents

• Incidents are usually resolved quickly, problems require investigation and resolution to prevent future incidents

• Problems are often identified through recurring incidents