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 rich merchant had collected many gold coins. He did not want anybody to know about them. One day his wife asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 32 times the difference between the two numbers equals the difference between the squares of the two numbers."The wife looked puzzled. Can you help the merchant's wife by finding out how many gold coins they have?
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: There are two balls touching each other circumferencically. The radius of the big ball is 4 times the diameter of the small all. The outer small ball rotates in anticlockwise direction circumferencically over the bigger one at the rate of 16 rev/sec. The bigger wheel also rotates anticlockwise at N rev/sec. What is 'N' for the horizontal line from the centre of small wheel always is horizontal.
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?
Q: T, U, V are 3 friends digging groups in fields. If T & U can complete i groove in 4 days &, U & V can complete 1 groove in 3 days & V & T can complete in 2 days. Find how many days each takes to complete 1 groove individually.
Q: A light bulb is hanging in a room. Outside of the room there are three switches, of which only one is connected to the lamp. In the starting situation, all switches are 'off' and the bulb is not lit. If it is allowed to check in the room only once.How would you know which is the switch?
Q: There are 3 sticks placed at right angles to each other and a sphere is placed between the sticks . Now another sphere is placed in the gap between the sticks and Larger sphere . Find the radius of smaller sphere in terms of radius of larger sphere.
Q: ABCDE are sisters. Each of them gives 4 gifts and each receives 4 gifts No two sisters give the same combination ( e.g. if A gives 4 gifts to B then no other sisters can give four to other one.)Â (i) B gives four to A.(ii) C gives 3 to E. How much did A,B,C,E give to D?
Q: There is a room with a door (closed) and three light bulbs. Outside the room there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can't change them. Identify each switch with its bulb.
Q: Tom has three boxes with fruits in his barn: one box with apples, one box with pears, and one box with both apples and pears. The boxes have labels that describe the contents, but none of these labels is on the right box. How can Tom, by taking only one p
Q: A vessel is full of liquid. From the vessel, 1/3rd of the liquid evaporates on the first day. On the second day 3/4th of the remaining liquid evaporates. What fraction of the volume is present at the end of the second day
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?
Q: In a Park, N persons stand on the circumference of a circle at distinct points. Each possible pair of persons, not standing next to each other, sings a two-minute song ? one pair immediately after the other. If the total time taken for singing is 28 minutes, what is N?
Q: Give two dice - one is a standard dice, the other is blank (nothing painted on any of the faces). The problem is to paint the blank dice in such a manner so that when you roll both of them together, the sum of both the faces should lie between 1 and 12. Numbers from 1-12 (both inclusive) equally likely.
Q: If I walk with 30 miles/hr i reach 1 hour before and if i walk with 20 miles/hr i reach 1 hour late. Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which it walks.
Q: Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P)....
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: 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 man driving the car at twice the speed of auto one day he was driven car for 10 min. and car is failed. he left the car and took auto to go to the office .he spent 30 min. in the auto. what will be the time take by car to go office?
Q: Motorboat A leaves shore P as B leaves Q; they move across the lake at a constant speed. They meet first time 600 yards from P. Each returns from the opposite shore without halting, and they meet 200 yards from. How long is the lake?
