Atlassian Principal Architect Interview Questions and Answers

Q1. Design a efficiënte db read
Ans. 
Efficient database read design
• Use indexing to quickly locate data

• Minimize the number of reads by fetching only necessary columns

• Consider denormalizing data for faster reads

• Implement caching mechanisms to reduce database load

• Optimize queries by avoiding unnecessary joins
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Q2. Exception handling
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Q3. Customruntime exception
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Q4. Design abstract factory
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Q5. Design a system to read the data efficiently without iterating on record repeatedly
Ans. 
Use indexing to access data directly without iterating
• Implement a database with proper indexing on key fields

• Utilize data structures like hash tables or binary search trees for quick access

• Consider using caching mechanisms to store frequently accessed data

• Optimize queries by using efficient algorithms like merge sort or quicksort
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Q1. Linked list implementation
Ans. 
Linked list is a data structure where each element points to the next element in the sequence.
• Nodes contain data and a reference to the next node

• Operations include insertion, deletion, and traversal

• Example: Singly linked list, Doubly linked list
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Q2. Arrays related DSA
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Q1. What you know about UKG
Ans. 
UKG is a leading provider of HR, payroll, and workforce management solutions.
• UKG stands for Ultimate Kronos Group, formed by the merger of Kronos Incorporated and Ultimate Software.

• They offer cloud-based human capital management software for HR, payroll, and workforce management.

• Their solutions help organizations streamline processes, improve employee engagement, and drive better business outcomes.
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Q2. Salary expectations
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Q1. Understanding of the project structure.
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Q1. Framework related questions
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Q1. Culture fitment queries.
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Q1. Why you joined as Data science team
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Q2. What is difference between AI and ML ops
Ans. 
AI Ops focuses on managing and deploying artificial intelligence models, while ML Ops focuses on managing and deploying machine learning models.
• AI Ops involves managing and deploying artificial intelligence models, which may include deep learning, natural language processing, and computer vision.

• ML Ops involves managing and deploying machine learning models, which typically involve statistical algorithms and data analy...read more
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Q3. What is your 3 yrs & 5 yrs goal if you joined this company
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Major focus on busniess output

Q1. What do you know about Credit Card Transaction lifecycle
Ans. 
Credit card transaction lifecycle involves authorization, clearing, and settlement processes.
• Authorization: Initial approval of the transaction by the card issuer.

• Clearing: The process of exchanging transaction details between the merchant and the card issuer.

• Settlement: The final transfer of funds from the cardholder's account to the merchant's account.

• Chargeback: A reversal of a transaction due to disputes or fraud.

• I...read more
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Q1. EXPLAIN current project application architecture.
Ans. 
Current project application architecture is microservices-based with containerization using Docker and orchestration with Kubernetes.
• Microservices architecture for scalability and flexibility

• Containerization with Docker for easy deployment and management

• Orchestration with Kubernetes for automated scaling and load balancing
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Q2. Explain Oauth and Jwt implementation
Ans. 
OAuth is an authorization framework that allows third-party applications to obtain limited access to a user's data without exposing their credentials. JWT is a compact, self-contained way for securely transmitting information between parties as a JSON object.
• OAuth allows users to grant access to their resources without sharing their credentials directly.

• JWT is a token format that can be used for securely transmitting i...read more
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Q3. Web Api implementation and pattern used
Ans. 
Web API implementation using RESTful architecture with MVC pattern.
• Use RESTful principles for designing API endpoints

• Implement controllers to handle incoming requests and return responses

• Leverage MVC pattern for separating concerns and improving maintainability

• Utilize DTOs (Data Transfer Objects) for transferring data between layers

• Implement authentication and authorization mechanisms for secure access
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Q1. Oops concepts, Scenario based QA question
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Q1. This one also technical round and various testing concepts
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Q1. Offshore round on technical discussion.
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Q1. What are your salary expectations?
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Q2. Why are you looking for a change?
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Q3. Why should we hire you?
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Q4. Where do you see yourself in 5 years?
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Q5. Tell me about yourself.
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