Sigma Computing Solutions Senior Software Engineer Interview Questions and Answers

Find the kth minimum element in the array

Q1. Design a online food delivering system
Ans. 
Design an online food delivering system for ordering and delivering food from restaurants to customers.
• Allow customers to browse menus and place orders online

• Provide options for delivery or pickup

• Include payment processing and order tracking

• Integrate with restaurants for menu updates and order notifications
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Q2. High level design of sync of google drive
Ans. 
Syncing Google Drive involves designing a system to keep files updated across devices and platforms.
• Implement a client-server architecture where changes are detected and synced between the Google Drive server and client devices.

• Utilize APIs provided by Google Drive for authentication, file manipulation, and syncing.

• Consider conflict resolution strategies for cases where the same file is edited on multiple devices.

• Imple...read more
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Q1. Tell me your project details
Ans. 
Developed a web application for online shopping with user authentication and payment gateway integration.
• Used React.js for front-end development

• Implemented user authentication using JWT tokens

• Integrated Stripe API for payment processing
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Q1. Oops concepts explained
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Q1. Optimization Techniques
Ans. 
Optimization techniques are methods used to improve the efficiency and performance of software applications.
• Use of algorithms like dynamic programming and greedy algorithms

• Profiling and performance tuning to identify bottlenecks

• Code refactoring to improve readability and maintainability

• Utilizing caching and memoization for faster access to data

• Parallel processing and multi-threading for improved concurrency
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Mostly they asked questions on String or basic coding questions

Q1. Core java questions basics, SpringBoot Microservice ,Sql questions
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Q1. Mostly questions on core java, day to day activities , agile,beghavioural questions
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Q1. Salary Expectation
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Q1. Explain Project Architecture
Ans. 
Project architecture refers to the high-level structure of a software system, including components, relationships, and interactions.
• Project architecture defines how different components of a software system interact with each other.

• It includes the design decisions related to the organization of code, data, and resources.

• Common architectural patterns include MVC, microservices, and serverless.

• Architectural diagrams like...read more
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Q2. Springboot components
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Q3. Angular Lifecycle
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Anagram, Pythagorean triplets

Js coding test with modifications

Q1. Questions on spring boot
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Q2. Questions on Java
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Q3. Java 8 Stream APi
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Q4. Questions on previous projects
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Q1. Java 8 features and benefits
Ans. 
Java 8 introduced new features like lambda expressions, streams, and default methods, improving code readability and performance.
• Lambda expressions allow for more concise code and easier parallel programming.

• Streams provide a way to work with collections in a functional style, enabling easier processing of large data sets.

• Default methods allow interfaces to have method implementations, reducing the need for abstract cl...read more
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Q1. Find the employees with highest salary from each department
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