About scylladb
Company Description
ScyllaDB is a high-performance, horizontally scalable NoSQL database designed for cloud-native applications, offering low-latency and high-throughput performance. Built to handle large volumes of data across distributed systems, ScyllaDB is compatible with Apache Cassandra but provides significantly better performance and efficiency. The company prides itself on fostering a collaborative and innovative work culture, emphasizing continuous learning and professional growth. Employees are encouraged to take ownership of their projects and contribute to the open-source community. The work environment is dynamic and fast-paced, where creativity is valued, and team collaboration is essential for success.
Software Engineer Interview Questions
Q1: Can you describe your experience with distributed systems?
I have worked on several projects where I designed and implemented distributed systems using technologies like Apache Kafka and Kubernetes. My focus was on ensuring data consistency and fault tolerance while optimizing performance.
Q2: How do you approach debugging in a distributed environment?
I utilize logging and monitoring tools like Prometheus and Grafana to track system performance. When debugging, I analyze logs systematically to identify bottlenecks, and I use tracing tools to follow requests through the system.
Q3: What programming languages are you proficient in, and how do they apply to your work?
I am proficient in Java and Python, which I have used for backend development and scripting. I prefer using Java for performance-critical applications while leveraging Python for data manipulation and analysis.
Q4: How do you ensure the scalability of an application?
I design applications with a microservices architecture, which allows components to scale independently. Additionally, I implement load balancing and caching strategies to manage increased load effectively.
Q5: Describe a project where you had to optimize database performance.
In a previous project, I identified slow queries in a Cassandra database. I used query profiling to understand performance issues and then optimized indexes and refactored queries, resulting in a 30% improvement in response times.
DevOps Engineer Interview Questions
Q1: How do you manage infrastructure as code?
I utilize tools like Terraform and Ansible to manage infrastructure as code. This approach allows me to maintain version control and automate deployment processes, ensuring consistency across environments.
Q2: What tools do you use for CI/CD pipelines?
I typically use Jenkins and GitLab CI for continuous integration and deployment. These tools help automate testing and deployment, ensuring that code changes are validated and delivered quickly.
Q3: Can you explain how you monitor applications in production?
I use monitoring tools like ELK Stack and Grafana to track application performance. I set up alerts for anomalies and regularly review logs to ensure system health and performance.
Q4: Describe your experience with containerization technologies.
I have extensive experience with Docker and Kubernetes. I use Docker for containerizing applications and Kubernetes for orchestrating those containers, allowing for easy scaling and management of microservices.
Q5: What security measures do you implement in your DevOps practices?
I prioritize security by implementing best practices such as using IAM roles, conducting vulnerability scans, and ensuring encryption of data at rest and in transit. Regular audits and compliance checks are also part of my process.
Data Engineer Interview Questions
Q1: What is your experience with big data technologies?
I have worked with Apache Hadoop and Spark for processing large datasets. My role involved designing ETL pipelines to transform and load data into data warehouses and ensuring data quality through validation processes.
Q2: How do you handle data migration projects?
I approach data migration by first assessing the source and target systems. I then develop a migration plan, perform data mapping, and conduct a pilot migration to identify potential issues before executing the full migration.
Q3: Can you discuss your experience with SQL and NoSQL databases?
I have strong experience with SQL databases like PostgreSQL and NoSQL databases like MongoDB. I choose the appropriate database based on the requirements of the application, such as scalability, data structure, and access patterns.
Q4: How do you ensure data quality in your pipelines?
I implement validation checks at various stages of the ETL process. I also automate testing to catch discrepancies and regularly audit the data to ensure it meets quality standards.
Q5: Describe a challenging data project you worked on.
In a previous role, I worked on a project to analyze user behavior data for a retail client. The challenge was integrating data from multiple sources. I developed a robust pipeline that consolidated the data, allowing for detailed analytics while ensuring data integrity.
scylladb Interview Questions and Answers
Updated 21 Feb 2026No interview experiences shared yet.
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Common Interview Questions in scylladb
Q: A man has a wolf, a goat, and a cabbage. He must cross a river with the two animals and the cabbage. There is a small rowing-boat, in which he can take only one thing with him at a time. If, however, the wolf and the goat are left alone, the wolf will eat the goat. If the goat and the cabbage are left alone, the goat will eat the cabbage. How can the man get across the river with the two animals and the cabbage?
Q: Suppose a newly-born pair of rabbits, one male, one female, are put in a field. Rabbits are able to mate at the age of one month so that at the end of its second month a female can produce another pair of rabbits. Suppose that our rabbits never die and that the female always produces one new pair (one male, one female) every month from the second month on.
Q: A rich man died. In his will, he has divided his gold coins among his 5 sons, 5 daughters and a manager. According to his will: First give one coin to manager. 1/5th of the remaining to the elder son.Now give one coin to the manager and 1/5th of the remaining to second son and so on..... After giving coins to 5th son, divided the remaining coins among five daughters equally.All should get full coins. Find the minimum number of coins he has?
Q: 3 policemen and 3 thieves had to cross a river using a small boat. Only two can use the boat for a trip. All the 3 policemen and only 1 thief knew to ride the boat. If 2 thieves and 1 policeman were left behind they would kill him. But none of them escaped from the policemen. How would they be able to cross the river?
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Q: Jarius and Kylar are playing the game. If Jarius wins, then he wins twice as many games as Kylar. If Jarius loses, then Kylar wins as the same number of games that Jarius wins. How many do Jarius and Kylar play before this match?
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Q: Consider a series in which 8 teams are participating. each team plays twice with all other teams. 4 of them will go to the semi final. How many matches should a team win, so that it will ensure that it will go to semi finals.?
Q: In a country where everyone wants a boy, each family continues having babies till they have a boy. After some time, what is the proportion of boys to girls in the country? (Assuming probability of having a boy or a girl is the same)
Q: A Man is sitting in the last coach of train could not find a seat, so he starts walking to the front coach ,he walks for 5 min and reaches front coach. Not finding a seat he walks back to last coach and when he reaches there,train had completed 5 miles. what is the speed of the train ?
Q: A person meets a train at a railway station coming daily at a particular time. One day he is late by 25 minutes, and he meets the train 5 k.m. before the station. If his speed is 12 kmph, what is the speed of the train.
Q: The profit made by a company in one year is enough to give 6% return on all shares. But as the preferred shares get on return of 7.5%, so the ordinary shares got on return of 5%. If the value of preferred shares is Rs 4,000000, then what is the va...
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