How to Hire an iOS Developer?

hire an iOS developer

It isn’t a secret that iPhone users are the ones spending more money on paid apps, premium features, and non-digital fancy products. In regional markets such as the U.S, Canada, Norway, and France, iOS platforms are the most popular and requested. To grow your business, you can’t leave iPhone users out of your business plan. After all, who isn’t getting an iPhone?

The law of supply and demand means that hiring an iOS developer becomes challenging since no one can’t skip looking for a skilled iOS app developer. Even if iOS platforms are more standardized than Android and require less time and budget, finding the right programmer for your project asks for a solid and careful hiring process. 

Remote or on-site, iOS developers are an important part of your team and their role is essential to build an interactive and functional app that will grow your business and customer loyalty. 

If you are starting the hiring process to bring such a person into your company, here are the most important things to keep in mind in your quest to find the perfect iOS developer!

What is an iOS Developer?

If you’re looking for iOS developers, you want someone to develop high-end iOS applications for iPhones. Their main job is designing and developing apps running Apple’s iOS operating system. Which means that your iOS developer will be with you from the beginning to the end.

iPhone developers write the base side of the application, fixing bugs before the release, and maintaining the code to implement future updates. Once the app core structure is ready, your developer will collaborate with your design team for new application features, isolating and fixing bottlenecks to upgrade the app’s functions. Working on Apple devices, your iOS developer needs a deep knowledge of iOS frameworks and Apple coding languages to create engaging and interactive apps to captivate your users.

Here are, in short, the primary responsibilities and skills your iOS developer can’t miss:

Role & Responsibilities 

  • Designing the iPhone architecture for Apple’s iOS platforms 
  • Collaborating with the design team
  • Maintaining quality and performance of the applications 
  • Identifying bottlenecks with quick problem-solving
  • Cleaning the core code and fixing bugs before the release
  • Publishing the app on Apple Store
  • Maintaining the code and implement the automation of the app
  • Improving and implementing features and app updates


hire an iOS developer

1. Programming Languages 

Proficient with Swift, Objective-C, and Cocoa Touch. From iPhone to iPad to Apple TV to Apple Watch, Apple devices are mainly written in Swift, or with a combination of Swift and Objective-C. When you hire an iOS developer, keep in mind that almost all iOS libraries use these programming languages!

2. iOS Frameworks

Proficient with frameworks such as Core Data, Core Animations, etc. If your app doesn’t process an enormous amount of data, you can look for someone with expertise in iOS apps. If your app is processing a vast amount of data, like paths on a map or history of selected purchases, you will need someone familiar with iOS frameworks. 

3. Networking & Memory Management

A skilled iOS developer is familiar with app-side code for communicating with RESTful web service and instruments tools to analyze performance issues. Plus, memory management tools like ARC are crucial to handle data. 

4. Debugging & Code Review  

Every iPhone developer should be familiar with debugging tools in Xcode to maintain the code run smoothly with some experience in offline storage, threading, and performance tuning. For peer code reviews, you will need a senior iOS developer to improve the quality of your app in the long run. 

5. Security

Most iPhone developers should be familiar with version control, also known as source control. Collaborative version control tools like GitHub or control systems like git or Mercurial are the most popular for peer code review to protect your investment in code.

6. Design & User Experience 

Your future iOS developer will deal closely with your design team to improve the visual elements of your app. If you have an existing design team, collaborative and communications skills are essential. Besides that, a basic understanding of design patterns and how to support the visual resolution of the app is a valuable addition. This basic knowledge is necessary to improve the user experience, analyzing how the user navigates and interacts with the app layout. 

How to Hire an iOS Developer for Your App Development Project

That’s all you need from an iPhone developer. What options do you have to find the best one? 

Hiring a remote developer was an intelligent choice to cut off company costs. Most importantly, you can widen your talent pool and hire in different locations using different time zones to ensure a 24h service. 

Here three main routes for remote hiring: 


You can rely on partners or credible portals to hire a freelance developer for your project. A freelance iPhone developer is an excellent addition to an existing in-house development team if all you need is a specific skill or task. When your goal is to build a more extended relationship, a freelancer is a risky option. With a person that is preoccupied with serving several clients at once, you can face late deliveries, miscommunications, and low performance. 

In-House Development Team

Having a remote in-house team is one of the best options for consistent and long collaboration. As a part of an in-house team, your iOS developers have time to analyze your product and business, growing their expertise in the field. Working for a longer period, the communication across team departments will stabilize, facilitating deliveries and quality products. Certainly, in-house developers mean more work for your HR team, but you will see the benefits for your project in the long run! 

Outsourcing Company 

Outsourcing companies take care of everything for you, from design to support to project management issues. Rather than distribute tasks among team members, you can give documentation and deadlines to an outsourcing company. This option is less time-consuming than an in-house team. With that said, even with credible companies, you can face deadline and quality issues exactly as when dealing with freelancing. In addition, dealing with an external team, you might experience drawbacks like communication issues and lateness due to different time zones. In the long run, you risk working with people not interested in your company mission or that will lose interest in your project if they don’t see the opportunity of growing in your company. 

10 Top Interview Questions for an iOS Developer

Based on the stage of your project and the company’s strategy, there is one last thing to consider. As we mention, an iOS developer follows the app development from the beginning to the end. When it comes to hiring iOS developers, remember that their expertise and proficiency with tools depends on their year of experience. If you want an iPhone developer to manage the launch of a new app, you want to look for a Senior developer. To join and support an existing team, you can hire a Junior or Middle position focussing on a specific stage of the process.

Thinking of  what you need for your projects, here are there three interview questions, from Junior to Senior level, to take inspiration for your future interview:

Junior iOS Developer: Less Than 2 Years Experience 

1. What is Cocoa and Cocoa Touch?

hire an iOS developer

2. What are Swift and Objective-C?

Objective-C is the primary programming language to write OS X and iOS software. As a superset of the C programming language, it provides object-oriented capabilities and a dynamic runtime. Objective-C manages the syntax, primitive types, and flow control statements of C, adding syntax for classes and methods. It is language-level support for object graph management and objects literals that provide dynamic typing and binding.

Swift is a new programming language for Apple apps that builds on the best of C and Objective-C without C compatibility constraints. Swift adopts safe programming patterns and adds modern features to make programming easier, more flexible, and more fun (Apple developer library). 

3. What is an autorelease pool? 

When you send autorelease to an object, it adds to the inner-most autorelease pool, and when this pool is drained, it simply sends releases to the other objects in the pool. Autorelease pools allow sending release in several places – the most common in Cocoa GUI apps is at the end of the current run loop cycle.

Middle-Level iOS Developer: Between 2 And 5 Years 

1. Which JSON frameworks does iOS support?

iOS supports the SBJson framework, a JSON parser and generator for Objective-C providing flexible APIs and additional control.

2. How do you achieve currency in iOS?

The three ways to achieve iOS currency are threads, dispatch queues, and operation queues.

3. Which framework can construct an iOS app’s user interface?

The UIKit framework provides event handling, drawing model, windows, views, specific control for touch screen interfaces. 

Senior iOS Developer: More Than 5 Years 

1. What are the main features and advantages or disadvantages of Swift?

Swift is a typing language allowing protocols and generics. Static typing offers compile-time warnings and compilation errors while providing better runtime safety and determinism.

This strict type of safety works better in the following scenarios:

  • Building a client application with more strict explicitness rather than dynamism 
  • Working in an environment restricting less experienced developers (beginners and juniors) 
  • Refactoring your code, the compiler is an aid to write clean code

When you are building a library or a framework, static typing can be too restrictive. In this case, Objective-C is a better choice because it allows better meta-programming capabilities.

2. How do you handle memory management in iOS?

Similarly to Objective-C, Swift uses Automatic Reference Counting (ARC). ARC records strong references to instances of classes. When you assign or unassign instances of classes, or reference types, to constants, properties, and variables, the instances increase or decrease their reference. The software deallocates the object’s memory when the reference count drops to zero. When assigned, the reference count of value types is copied. If you don’t specify otherwise, all the references are considered strong references.

3. What is MVC?

MVC, Model View Controller, is a software design pattern Apple uses for iOS application development. Models represent application data, views create items on the screen, and controllers monitor and manage the data flow between model and view. The latter never communicate directly with each other. Since view controllers handle the workflow, the code is rigid and hard to change. You can always rely on other design patterns such as MVVM, MVP, or Coordinator. Also, frameworks like VIPER and RIBs are specifically developed to scale iOS code and avoid Massive View Controller issues.

Ready To Hire Your iOS Developer

Now you have all the basic info you need to hire your iOS developer. As we said, for a single project, you can hire a freelancer with specialized skills. If you are looking for more extended collaboration, then you want to be looking for a remote in-house iOS developer to make your team shine. 

Wherever is your best option, don’t forget that your iPhone developer will be working with you and your team. Communication and collaborative skills are crucial, as much as technical skills. Pay attention to their personality and interactions during the interview process. Some things can’t be spotted on a CV! 

If you want to speed up the hiring process and support during the interview process, we can help. As a remote recruitment agency with years of experience, we can interview candidates for you and pick the best remote iOS developer for your project – in just two weeks! If you want to know more about it, knock on our virtual doors! 

Share this post

Share on facebook
Share on google
Share on twitter
Share on linkedin
Share on pinterest
Share on print
Share on email

or... Subscribe to our newsletter and get exclusive content and bloopers

Costanza Tagliaferri

Costanza Tagliaferri

Costanza Tagliaferri is a Writer and Content Marketer at DistantJob. She has covered a wide range of topics, and now she is focussing on technology, traveling, and remote work.