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I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
MVVM is an architectural pattern used in software development, particularly in Android apps, to separate the user interface from the business logic.
MVVM stands for Model-View-ViewModel
Model represents the data and business logic
View is the UI component that displays the data and interacts with the user
ViewModel acts as a mediator between the Model and View, handling user interactions and updating the Model
MVVM helps in...
Sealed classes in Kotlin are used to represent restricted class hierarchies.
Sealed classes can have a limited set of subclasses defined within the same file.
They are useful for representing a fixed set of types in a hierarchy.
Sealed classes are often used in when expressions for exhaustive checks.
Extension functions in Kotlin allow you to add new functions to existing classes without modifying their source code.
Extension functions are defined outside of the class they extend.
They can be called on instances of the class as if they were regular methods.
They can access the properties and methods of the class they extend.
Example: fun String.isEmailValid(): Boolean { ... }
Example: fun Int.isEven(): Boolean { ... }
Null safety in Kotlin ensures that variables cannot hold null values unless explicitly specified.
Kotlin uses nullable and non-nullable types to enforce null safety.
The '?' operator is used to declare a variable as nullable.
Safe call operator '?.' is used to safely access properties or methods of nullable objects.
The '!!' operator is used for force unwrapping nullable types, but can lead to NullPointerExceptions.
Room database is a persistence library that provides an abstraction layer over SQLite to allow for more robust database access while harnessing the full power of SQLite.
Room database simplifies database interactions by providing compile-time verification of SQL queries.
It consists of three main components: Entity, DAO (Data Access Object), and Database.
Entities represent tables in the database, DAOs define methods to i...
Convert vowels in a string to uppercase
Iterate through each character in the string
Check if the character is a vowel (a, e, i, o, u)
If it is a vowel, convert it to uppercase
Jet Compose is a modern UI toolkit for building native Android apps using a declarative approach.
Jet Compose is a declarative UI framework for building Android apps.
It allows developers to create UI components using Kotlin code.
Jet Compose simplifies UI development by eliminating the need for XML layouts.
It provides a more flexible and efficient way to create dynamic UIs.
Jet Compose is part of the Jetpack libraries pro
Java oops concepts
collections
spring framework
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
5 years of experience in software development
Proficient in Java, Spring, and Angular
Strong problem-solving skills
Implemented lazy loading in web applications to improve performance by loading content only when needed.
Implemented lazy loading for images on a website to reduce initial page load time.
Utilized libraries like Intersection Observer to trigger loading of elements when they come into view.
Implemented lazy loading for components in a single page application to improve user experience.
Photon Interactive interview questions for popular designations
I was interviewed before Mar 2024.
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I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
Created an app which take data from API service and show in a list using jetpack compose
I approach design for accessibility by considering various user needs and ensuring the interface is usable for all individuals.
Conducting research to understand the diverse needs of users
Implementing features such as alt text for images and proper color contrast
Testing the design with assistive technologies like screen readers
Providing multiple ways to navigate the interface for different abilities
Balancing aesthetics and functionality in design involves prioritizing user experience while maintaining visual appeal.
Understand the target audience and their needs
Focus on usability and intuitive navigation
Use visual hierarchy to guide users' attention
Simplify complex information for better comprehension
Test designs with real users for feedback and improvements
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
Large data processing in Pyspark involves partitioning, caching, and optimizing transformations for efficient processing.
Partitioning data to distribute workload evenly across nodes
Caching intermediate results to avoid recomputation
Optimizing transformations to minimize shuffling and reduce data movement
Data governance is implemented through policies, processes, and tools to ensure data quality, security, and compliance.
Establish data governance policies and procedures to define roles, responsibilities, and processes for managing data
Implement data quality controls to ensure accuracy, completeness, and consistency of data
Utilize data security measures such as encryption, access controls, and monitoring to protect sens...
Two data lineage tools are Apache Atlas and Informatica Enterprise Data Catalog.
Apache Atlas is an open source tool for metadata management and governance in Hadoop ecosystems.
Informatica Enterprise Data Catalog provides a comprehensive data discovery and metadata management solution.
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
Creating a custom framework involves organizing code into reusable components for easier development and maintenance.
Identify common functionalities that can be abstracted into separate modules
Create a new Xcode project and select 'Framework' as the template
Add your code files, resources, and dependencies to the framework project
Build the framework to generate a .framework file that can be imported into other projects
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