iOS Developers Hiring Guide

An Elegant and Easy to Use OS Created by Apple

iOS is an OS developed by Apple for hardware like iPhone, iPod touch, and iPad. It is easy to use and has many features such as amazing performance, and a strong focus on security.

With 1.8 million apps available on the Apple store, it’s safe to say that iOS apps are very popular. That’s because Apple has established its mobile OS as one of the most groundbreaking environments out there. That fact has spurred a loyal user base that, in turn, makes the OS an excellent opportunity for businesses to showcase their work. 

This OS powers all of Apple’s mobile devices, including the iPhone, iPad, and iPad Mini. It’s the second most popular operating system in the world after Android, which is why so many companies develop their apps for this OS. 

iOS is easy to use and comfortable to adapt to as its UI combines simplicity with elegance. It has many innovative features, a superb performance, and a strong focus on security. Besides, iOS isn’t just a great system for personal use – it also suits business and gaming needs. 

That makes iOS a prime contender for businesses, that need to look out for mobile engineers with strong knowledge in Swift to develop iOS applications. 

iOS Developers Hiring Guide 10
  • iOS Developers Hiring Guide 11

    Hiring Guide

  • iOS Developers Hiring Guide 12

    Interview Questions

  • iOS Developers Hiring Guide 13

    Job Description

Objective-C is a general-purpose programming language that uses C as a base. It was developed in 1980 and many helpful features such as automatic meta class creation, ease of understanding, and Dual typing. For some time, it was Apple's go-to language for developing iOS apps. However, due to the lack of modern features, Apple focused on creating a replacement for it. Swift was born out of that effort. 

Swift is a robust and fast language developed by Apple for coding applications. It’s a sophisticated yet easy language that boasts simple syntax, increased readability, and high speed. It’s also safer and requires less code than its counterparts.

Swift is a highly scalable and optimized language that is best suited for iOS app development. It requires fewer lines of code to create features as it doesn’t have many legacy conventions like semicolons, end lines, and parentheses. It also provides inline support for handling text scripts. Additionally, you can use Swift playgrounds to test your algorithms before creating applications. 

It’s worth pointing out that some developers still choose to use Objective-C for iOS development, mainly due to its ability to create dynamic objects at runtime and its community support. It’s also known for performing advanced functions such as method swizzling and its interoperability between C and C++. 

Be that as it may, most developers are transitioning to Swift these days, as Swift is faster and safer than Objective-C. Also, Swift is now ABI Stable and is considered a mature language despite it being launched only 7 years ago. 

Difficulties in finding a skilled iOS developer

A skilled iOS developer is an asset to any organization as they have complete knowledge of the field and can develop full-scale applications for one of the biggest OS in the world. They are also responsible for code quality and updates.

While iOS apps have grown in popularity, it can be difficult to find an iOS developer with the right expertise and work experience. The issue is that, even when the basics of Swift are easy to learn, creating large-scale apps and implementing them at an organizational level is a difficult task.  

Many developers aren’t able to create apps that take into account performance issues. Creating an application and optimizing it for performance is a necessary requirement for iOS developers. 

Also, sometimes, the developer may be skilled at one language but may not have the necessary expertise of other languages or the platform as a whole.  

How to choose the best iOS developer?

iOS developers have the responsibility of creating flawless, full-stack applications. So, a good developer should ensure that their code shows high performance while ensuring app safety. This implies that iOS engineers have to know more than just Swift - they also have to have a deep understanding of cybersecurity.  

They should also be able to upgrade and maintain app compatibility with new iOS versions and should understand UX/UI principles. They should also be able to create apps that run seamlessly on all platforms, i.e., cross-platform applications, because a lot of companies want to have a mobile presence in both iOS and Android.    

Finally, it’s important to point out that good communication, problem-solving, and creative thinking skills are also necessary, as they are required for working in any modern development team. 


iOS is a great platform with versatile features, community support, and millions of active users and supporters. Choosing iOS as the operating software for your business needs is an excellent choice, as long as you can hire the right iOS engineers, professionals that combine Swift knowledge, industry expertise, and cybersecurity understanding with good communication and problem-solving skills.

Here are a few questions you can ask an iOS developer to check their knowledge:

What’s the purpose of a reuse identifier?

The reuse identifier is used to group rows that are similar in a UITableView. If it isn’t added, the application animation will lag and affect the overall performance. 

What are the different ways in which you can specify the layout of elements in a UIView?

Some common ways you can use to specify the layout of the elements in UIView:  

  • You can use NSLayoutConstraints to have elements in your particular view arranged by Auto Layout.  
  • You can create GRect with the exact coordinates for elements and pass them through UIView’s CGRect frame method.
  • Through the InterfaceBuilder, you can add a XIB file, put elements in it, and then load that XIB in your application code.  

What’s the difference between atomic and nonatomic properties?

Atomic properties always return a fully initialized object. It’s also the default state for synthesized properties. They also affect performance.

Nonatomic properties don’t have to return any value. That's why they are only used in places where uninitialized value isn’t a risk, or where properties can be accessed through other means. Nonatomic properties perform better than atomic properties. 

Which are the ways of achieving concurrency in iOS?

The 3 ways to achieve concurrency in iOS are Threads, Dispatch queues, and Operation queues.

We are looking for an iOS Developer to join our development team and participate in developing and maintaining our projects. The developer should be able to create iOS apps and integrate them with backend systems and different APIs. It’s an excellent opportunity for professionals looking to grow their skills and knowledge. The developer should be able to solve complex problems and work on collaborative designs. 


  •  Design and code iOS applications
  • Test and debug software modules to ensure performance and quality
  • Identify coding issues to fix them in updates
  • Collaborate with multiple stakeholders and designers to create the final product
  • Follow best industry practices and standards

Skills and Qualifications

  • Knowledge of Swift,Objective-C, and dev environments such as Cocoa Touch
  • Knowledge of different frameworks (Core Data, Core Animation)
  • Experience in high-performance and threaded systems
  • Basic understanding of design principles and UX/UI principles
  • Proven experience in iOS back end integration and REST
  • Experience with Code versioning tools (Git)
  • Knowledge of Push notification and APIs
  • Problem-solving skills and team spirit. 

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