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Flexsin Technologies IOS Developer Interview Questions and Answers

Updated 28 Jun 2023

Flexsin Technologies IOS Developer Interview Experiences

2 interviews found

I applied via Approached by Company and was interviewed before Jan 2019. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Swift new and basic concepts
  • Q2. Protocol oriented programming

I applied via Company Website and was interviewed in Dec 2019. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Written questions and grammar test, after that technical and machine round.
  • Q2. Questions are not more difficult.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for basic and project related info which you completed yet.

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IOS Developer Interview Questions & Answers

Mphasis user image Khushbu Kushwah

posted on 1 Jul 2024

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Some basic Questions related to iOS concepts.
  • Q2. Multithreading and multitasking.
Round 2 - Technical 

(2 Questions)

  • Q1. Advanced iOS Questions.
  • Q2. API Calling, Json Parsing

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn Basic Concepts first.

I applied via LinkedIn and was interviewed in Jan 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Swift basic questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Basic swift question and oops concepts, previous project overview.
Round 1 - Technical 

(3 Questions)

  • Q1. Basic of swift and some questions related to your past work experience.
  • Ans. 

    Questions about basic Swift knowledge and past work experience.

    • Basic Swift concepts such as optionals, closures, and protocols may be asked.

    • Questions about past projects and how you approached problem-solving may also be asked.

    • Examples of past work experience and projects may be requested.

    • Questions about Swift syntax and best practices may be asked as well.

  • Answered by AI
  • Q2. Clean coding principles
  • Ans. 

    Clean coding principles ensure code readability, maintainability, and scalability.

    • Use meaningful variable and function names

    • Keep functions short and focused

    • Avoid code duplication

    • Follow SOLID principles

    • Write unit tests

    • Refactor regularly

  • Answered by AI
  • Q3. They may ask your approaches to solve problems.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Confident about your answers and dont get lost.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Diff b/w diff and guard
  • Ans. 

    diff is used to compare two collections and return the differences, while guard is used for early exit in a function if a condition is not met.

    • diff is a method used in Swift to compare two collections and return the differences.

    • guard is a keyword used in Swift to provide an early exit from a function if a condition is not met.

    • Example: let array1 = [1, 2, 3, 4], array2 = [3, 4, 5, 6]; let result = array1.diff(array2) //...

  • Answered by AI
  • Q2. What is GCD and Multitreadung
  • Ans. 

    GCD stands for Grand Central Dispatch, a technology used in iOS for managing concurrent operations. Multithreading is the ability of a CPU to execute multiple threads concurrently.

    • GCD is used for managing tasks asynchronously and efficiently utilizing system resources.

    • Multithreading allows multiple tasks to run concurrently, improving performance and responsiveness of an application.

    • Example: Using GCD to download image...

  • Answered by AI

Skills evaluated in this interview

I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.

Interview Questionnaire 

4 Questions

  • Q1. All basics of swift. Enums optionals closures protocols etc
  • Q2. Best feature you like of swift
  • Q3. App live all steps
  • Q4. Certificates information

Interview Preparation Tips

Interview preparation tips for other job seekers - They will ask you everything about swift
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Objective C vs swift
  • Ans. 

    Objective-C is the older language used for iOS development, while Swift is the newer, more modern language.

    • Objective-C is a superset of C with Smalltalk-style messaging syntax.

    • Swift is more concise and easier to read than Objective-C.

    • Swift is safer due to its optionals and type interference features.

    • Objective-C has been around longer and has a larger codebase, but Swift is becoming more popular.

    • Many developers prefer S...

  • Answered by AI
  • Q2. Autolayouts and content

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Walk-in and was interviewed before Sep 2023. There were 2 interview rounds.

Round 1 - Technical 

(14 Questions)

  • Q1. What is serialisation in API
  • Ans. 

    Serialisation in API is the process of converting data into a format that can be easily transmitted over a network.

    • Serialisation is used to convert complex data structures into a format that can be easily transmitted over a network.

    • It involves converting objects or data structures into a stream of bytes that can be sent over a network.

    • JSON and XML are commonly used formats for serialising data in APIs.

    • Serialisation is ...

  • Answered by AI
  • Q2. What is codable
  • Ans. 

    Codable is a protocol in Swift that allows for easy encoding and decoding of data types to and from external representations.

    • Codable protocol is used to convert custom data types to and from external representations such as JSON, plist, etc.

    • It requires the types to conform to Encodable and Decodable protocols.

    • Codable protocol provides default implementations for encoding and decoding.

    • Example: struct Person: Codable { v...

  • Answered by AI
  • Q3. What is MVVM architecture
  • Ans. 

    MVVM is an architectural design pattern that separates the user interface code from the business logic and data model.

    • MVVM stands for Model-View-ViewModel

    • Model represents the data and business logic

    • View displays the UI elements and interacts with the user

    • ViewModel acts as a mediator between the Model and View, handling user inputs and updating the Model

    • MVVM helps in achieving separation of concerns and making the code

  • Answered by AI
  • Q4. Solid principles
  • Q5. Coredata stack questions
  • Q6. Swift Optional related
  • Q7. About GCD, Concurrency
  • Q8. Dependency injection and inversion
  • Q9. About singleton, is it thread safe ?
  • Q10. Guard let, if let difference
  • Q11. Failable initialisers
  • Q12. Class struct difference
  • Ans. 

    Classes are reference types, while structs are value types in Swift.

    • Classes are reference types, meaning they point to the same instance in memory when assigned to a new variable.

    • Structs are value types, meaning they create a new copy when assigned to a new variable.

    • Classes support inheritance, while structs do not.

    • Classes can have deinitializers, while structs cannot.

    • Example: class Person { var name: String } vs struc

  • Answered by AI
  • Q13. About protocols, associated type, delegate examples
  • Q14. About identifiable protocol
Round 2 - HR 

(1 Question)

  • Q1. When you can join
  • Ans. 

    I can join within 2 weeks of receiving an offer.

    • I can start within 2 weeks of receiving an offer

    • I need to give notice at my current job before starting

    • I have some personal commitments that I need to wrap up before joining

  • Answered by AI

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Arc in swift...
  • Ans. 

    ARC (Automatic Reference Counting) in Swift is a memory management system used to automatically manage memory allocation and deallocation.

    • ARC keeps track of how many references there are to an object and automatically deallocates it when there are no more references.

    • Use strong reference cycles can lead to memory leaks, so use weak or unowned references to break the cycle.

    • ARC is the default memory management system in S...

  • Answered by AI
  • Q2. Automstic referenc counting
Round 2 - Technical 

(2 Questions)

  • Q1. Mvvm in swift....
  • Ans. 

    MVVM (Model-View-ViewModel) is an architectural design pattern commonly used in iOS development to separate concerns and improve code maintainability.

    • MVVM separates the user interface (View) from the business logic (ViewModel) and data (Model).

    • ViewModel acts as an intermediary between the View and the Model, handling user interactions and updating the data.

    • Swift provides tools like Combine framework for reactive progra...

  • Answered by AI
  • Q2. Model view viewmodel

Skills evaluated in this interview

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Flexsin Technologies Interview FAQs

How to prepare for Flexsin Technologies IOS Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Flexsin Technologies. The most common topics and skills that interviewers at Flexsin Technologies expect are Data Structures and Algorithms, Digital Marketing, IOS, IPhone Development and JSON.
What are the top questions asked in Flexsin Technologies IOS Developer interview?

Some of the top questions asked at the Flexsin Technologies IOS Developer interview -

  1. Written questions and grammar test, after that technical and machine rou...read more
  2. Questions are not more difficu...read more
  3. Swift new and basic conce...read more

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Flexsin Technologies IOS Developer Salary
based on 5 salaries
₹2.1 L/yr - ₹4.5 L/yr
56% less than the average IOS Developer Salary in India
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