How to Hire Experienced iOS Developers for Your Project

How to Hire Experienced iOS Developers for Your Project

The demand for iOS developers continues to rise as mobile apps dominate the digital landscape.

Whether you’re a startup or an established company, having skilled iOS developers on your team can make all the difference in creating a successful app.

But with so many developers out there, how do you hire the right ones for your project?

In this article, we will explore the key steps to hiring talented iOS developers and building a strong development team.

The Importance of iOS Development

iOS development has gained significant popularity due to the substantial market share of iPhones and iPads. Having a dedicated iOS app can give your business a competitive edge and unlock a whole new customer base. iOS apps provide a seamless user experience, consistent performance, and enhanced security measures, which are crucial for businesses dealing with sensitive user data.

One of the key reasons why iOS engineering is so important, including the ever-growing number of users who own Apple devices. Having millions of iPhones and iPads available worldwide makes it possible for businesses to tap into this market and reach a wider audience by creating an iOS app. Businesses can establish a strong presence in the mobile app market by catering to iOS users so they will have greater visibility of their brand.

iOS apps are also known for their high-quality user experience due to Apple’s strict review guidelines that make sure that only well-designed and functional apps are allowed to enter the App Store. iOS users are therefore used to apps that have strong visual appeal, are intuitive to use, and are easy to navigate.

By investing in iPhone app development, businesses can create an app that not only meets these standards but also exceeds user expectations, leading to increased user engagement and customer satisfaction.

iOS Development

Consistent performance is another crucial aspect of the mobile app development. Apple’s closed ecosystem allows developers to optimize their apps specifically for iOS devices, resulting in better performance and faster load times.

This ensures users have a smooth and seamless experience while using the app, without lag or glitches. In contrast, developing apps for multiple platforms can be challenging, as it requires adapting them to different operating systems and device specifications.

Security is a top priority for businesses, especially those dealing with sensitive user data. iOS ecosystem offers enhanced security measures to protect user information and prevent unauthorized access. Apple’s stringent security protocols, such as app sandboxing and data encryption, provide an added layer of protection for both businesses and users.

This level of security is particularly important in industries like finance, healthcare, and e-commerce, where data privacy and confidentiality are paramount.

iOS mobile development is of great importance in today’s digital landscape. By investing in iOS apps, businesses can leverage the large user base of Apple devices, provide a high-quality user experience, ensure consistent performance, and enhance security measures.

Whether it’s reaching new customers, increasing brand visibility, or protecting sensitive user data, iOS development offers numerous benefits for businesses looking to stay competitive in the mobile app market.

Benefits of iOS Development

Investing in iOS application development offers several key benefits.

One advantage is the high-quality user interface and design provided by iOS devices. Apple’s stringent app review process ensures that only well-coded and polished apps make their way to the App Store. This quality control enhances user satisfaction and helps maintain a positive brand image.

iOS devices are renowned for their strong security features. Apple has built a reputation for prioritizing user privacy and data security. iOS devices are equipped with advanced security measures, such as secure boot, sandboxing, and data encryption, to protect sensitive user information.

This level of security instills trust and confidence among iOS users, making them more likely to engage with apps and share their personal information.

iOS Development

iOS devices have always been at the forefront of user interface and design. The sleek and intuitive interface of iOS devices, combined with the attention to detail in their app design, creates a seamless and enjoyable user experience.

From the smooth animations to the carefully crafted icons, every aspect of the iOS interface is designed to be visually appealing and user-friendly.

Apple’s app review process is one of the most rigorous in the industry. Before an app is approved for the App Store, it undergoes a thorough evaluation to ensure it meets Apple’s strict guidelines.

This process helps weed out poorly coded or buggy apps, ensuring that only high-quality and reliable apps are available to iOS users. As a result, users can trust that the apps they download from the App Store will work as intended and provide a positive user experience.

Studies have shown that iOS users are more likely to make in-app purchases and spend more on apps compared to users of other platforms. This makes iOS a profitable platform for businesses, as they have the potential to generate higher revenue from their iOS apps.

Overall, investing in iOS application development offers numerous benefits. From the high-quality user interface and design to the potential for increased revenue and strong security features, iOS provides a platform that is both profitable for businesses and satisfying for users.

Whether you are a business looking to expand your reach or a developer aiming to create a polished and reliable app, iOS mobile applications are a valuable investment.

iOS Development Languages

When hiring iOS developers, it’s essential to understand the different programming languages commonly used for iOS app development. Apple’s primary languages are Swift and Objective-C, developed for iOS and macOS app development.

iOS Development Languages


Swift offers a modern syntax and a vast range of features that enable developers to build robust and efficient iOS apps. With its clean and concise code, Swift has gained popularity among developers for its ease of use and readability.

It provides powerful tools and libraries that simplify the engineering process, allowing developers to focus on creating innovative and user-friendly apps.


In addition to Swift, Objective-C is another language used in iOS app development. While Swift has become the preferred choice for new projects, Objective-C is still used in legacy apps.

Objective-C has a long history and was the primary language for iOS development before Swift was introduced. It is important for employers to assess developers’ proficiency in both languages, as they may need to maintain or update existing Objective-C code.

Objective-C is known for its dynamic runtime and extensive libraries. It provides developers with a high level of control and flexibility, allowing them to utilize powerful features like method swizzling and dynamic typing.

While Objective-C may have a steeper learning curve compared to Swift, it remains an essential skill for iOS developers working on older projects.

When considering iOS development languages, it’s important to note that Swift and Objective-C can work together seamlessly. Developers can mix and match code written in both languages within the same project, making it easier to transition from Objective-C to Swift gradually. This interoperability allows developers to leverage existing Objective-C libraries and frameworks while taking advantage of Swift’s modern features.

Furthermore, Apple continues to invest in improving Swift and expanding its capabilities. The language is regularly updated with new features and enhancements, ensuring that developers have access to the latest tools and technologies. Swift’s open-source nature also encourages community contributions, fostering a collaborative environment where developers can share knowledge and build upon each other’s work.

Therefore, Swift is the primary language for iOS app development, offering a modern and efficient approach to building iOS apps. However, Objective-C remains relevant for maintaining legacy apps and leveraging existing codebases.

Employers should consider developers’ proficiency in both languages to ensure they have the necessary skills to work on a variety of projects. With continuous development and support from Apple, Swift is expected to remain the language of choice for iOS developers for years to come.

iOS Frameworks

iOS development frameworks provide pre-built modules and libraries that streamline the app development process and optimize performance. These frameworks are essential for iOS developers as they offer a wide range of tools and functionalities to create robust and feature-rich applications.

iOS Frameworks

Let’s explore some popular iOS frameworks in more detail:


One of the most widely used frameworks in iOS mobile application development is UIKit. This framework provides a set of user interface components for building visually appealing and interactive iOS apps.

With UIKit, developers can easily create and manage user interfaces, handle touch events, and implement animations. It offers a wide range of UI elements such as buttons, labels, text fields, and more, making it easier to design intuitive and user-friendly interfaces.

Core Data

Another important framework for iPhone app developers is Core Data. It offers an object-oriented toolkit for managing app data persistence, making it easier to store and retrieve data.

Core Data provides a high-level interface to work with databases, allowing developers to create, update, and query data efficiently. It also supports data modeling, versioning, and migration, making it a powerful tool for managing complex data structures in iOS apps.

Core Animation

As the name suggests, Core Animation is a framework that helps create stunning animations in iOS apps. It provides a high-performance animation engine that allows developers to create smooth and visually appealing transitions, effects, and transformations.

This animation framework offers a wide range of animation options, including keyframe animations, implicit animations, and layer animations. With Core Animation, developers can bring their apps to life by adding engaging and dynamic visual effects.

React Native

Programmers use React Native for both iOS and Android development. React Native is an open-source framework that allows developers to build both iOS and Android applications. It comes with its own JavaScript library for creating user interfaces.


Flutter is a Google UI software development kit (SKD) that can be used to develop apps for multiple platforms, including iOS apps, from a single codebase. It is based on Dart, a Google programming language.


The AVFoundation framework is an audiovisual media capture, processing, and playback framework with Swift and Objective-C APIs.

Understanding these frameworks is crucial when evaluating the expertise of potential iOS developers. A skilled iOS developer should be familiar with these frameworks and be able to utilize their powerful tools effectively to enhance your app’s functionality.

Skilled developers with experience in core data, animation frameworks, push notifications, augmented reality, and complex data structures possess a technical edge that sets them apart from the competition.

iOS Development Programming Tools

iOS development is a multifaceted process that demands a deep understanding of various programming tools and methodologies. At its core, iOS engineering revolves around writing, testing, and debugging code, tasks that are essential to creating robust and user-friendly applications for Apple’s platform.

iOS Development Programming Tools


Xcode, Apple’s integrated development environment (IDE), is the primary tool used for iOS app development. It provides a comprehensive set of features and a user-friendly interface that simplifies the entire development process.

When it comes to mobile app development, Xcode is a powerhouse of tools and utilities that streamline the workflow. It offers a wide range of templates, allowing developers to start their projects with pre-configured settings for different types of apps. Whether you are building a game, a social media platform, or an e-commerce application, Xcode has got you covered.

One of the standout features of Xcode is its built-in code editor, which supports multiple programming languages such as Swift and Objective-C. The code editor provides syntax highlighting, code completion, and intelligent suggestions, making it easier for developers to write clean and error-free code. It also includes a powerful debugging tool that helps identify and fix issues during the development process.

iOS Simulator

Another essential tool is the iOS Simulator, which allows developers to test their app on virtual iOS devices before deploying it to real devices. The simulator provides a simulated environment that closely mimics the behavior of an actual iOS device, enabling developers to test their app’s performance, responsiveness, and compatibility across different screen sizes and resolutions.


The Git version control system provides developers with a way to work together on non-linear workflows while coding. With Git, developers can work together remotely and access previous versions of the code, as well as track and record changes. Git is a version control system that facilitates collaboration and results in faster development. Many developers use Git to manage projects more efficiently.


For Swift and Objective-C projects, Cocoapods can be used as a dependency manager. It contains a large number of libraries and frameworks that make it easy to integrate third-party libraries into the projects and simplify workflows.

Visual Studio Code

VSC is a code editor that supports a wide range of languages and is used commonly by iOS developers to write code. The editor is also useful for debugging and task management functions, as well as version control.

Integration Tools

Continuous integration tools like Jenkins or Travis CI play a crucial role in iOS app development. These tools automate the app build and release process, ensuring seamless collaboration among developers and timely update delivery.

With continuous integration, app developers can integrate code changes into a shared repository, run automated tests, and generate build artifacts without manual intervention. This helps in maintaining code quality, reducing the risk of introducing bugs, and speeding up the overall development cycle.

Third-Party Libraries

In addition to the aforementioned tools, iOS developers often rely on third-party libraries and frameworks to enhance their app’s functionality and user experience. These libraries provide pre-built components and modules that can be easily integrated into a mobile app, saving developers time and effort.

Popular libraries like Alamofire for networking, Realm for database management, and SnapKit for auto layout are widely used in the iOS development community.

Furthermore, Apple’s developer documentation and online resources play a vital role in iOS app development. The official documentation provides detailed information on various iOS frameworks, APIs, and best practices.

Developers can also find a wealth of tutorials, sample code, and forums online, where they can seek guidance, share knowledge, and stay updated with the latest trends and techniques in the iOS ecosystem.

iOS Developer Hiring Strategy

iOS Developer Hiring Strategy

Defining Your Project Requirements

Before you start the hiring process, it’s essential to have a clear vision of your project requirements.

Understanding what you need will help you identify the skills and expertise required for an iOS developer.

Defining your project requirements involves delving into the details of what you want to achieve with your iOS app. Consider the target audience, the purpose of the app, and the specific features and functionalities you want to include.

Are you building a social media platform, an e-commerce app, or a productivity tool? Each type of app requires different sets of skills and expertise.

Moreover, consider hiring a dedicated project manager. If you want to add significant value to your mobile app development, it is a smart choice.

A project manager oversees the entire engineering process from inception to delivery, including ensuring it aligns with your project requirements and managing the software development team effectively.

Once you have a clear understanding of your project requirements, you can create a detailed project brief that outlines the scope, objectives, and deliverables. This document will serve as a roadmap for your iOS developer and ensure everyone is on the same page.

Identifying the Skills Needed for Your Project

Identifying the specific skills needed for your project is crucial to finding the right iOS developer. Consider the type of app you want to develop and the technologies and frameworks required to build it.

For example, if you’re building a gaming app, you’ll need an iOS developer with experience in game development frameworks like SpriteKit or Unity.

On the other hand, if you’re creating a data-driven app, you’ll need someone with expertise in working with databases and integrating APIs.

By clearly defining the required skills, you can attract candidates who are well-suited to your project and ensure their contribution to its success.

Setting Your Budget for Hiring iOS Developers

Setting a budget for hiring iOS developers is an integral part of the hiring process. Consider the level of experience you require and the complexity of your project when determining your budget.

Experienced developers may charge higher rates, but their expertise can save you time and resources in the long run.

They are more likely to have a deep understanding of best practices, efficient coding techniques, and the ability to handle complex challenges.

Additionally, consider the duration of your project. Will you need a full-time iOS developer or someone who can work on an on-demand basis?

Full-time app developers may require a higher budget, but they can provide dedicated attention to your project and ensure faster development.

On the other hand, hiring on-demand developers can be more cost-effective if you have a short-term project or need specific expertise for a limited period.

If you set a realistic budget, you can attract skilled iOS developers within your financial means.

Skills of iOS Developers to Look For

When evaluating iOS developers, certain skills and qualities are crucial for success in iOS app development.

Firstly, proficiency in Swift and Objective-C is a prerequisite, as these languages form the foundation of iOS development services. A deep understanding of iOS frameworks and APIs is also essential for developing feature-rich and intuitive iPhone apps.

Skills of iOS Developers

Required Skills for iOS App Development

Let’s highlight the most common skills an iOS developer should possess:

  • Proficiency in programming languages like Swift and Objective-C
  • Experience with iOS frameworks such as UIKit, Core Data, and Animation Framework
  • Knowledge of RESTful APIs and web services integration
  • Familiarity with version control systems like Git
  • Debugging skills

Among the additional qualities that make a great iOS developer are:

1. Strong Problem-Solving Skills: iOS developers need to be adept at identifying and solving complex problems that may arise during app development. They should have a logical and analytical mindset, allowing them to troubleshoot issues efficiently and come up with innovative solutions.

2. Attention to Detail: Developing iOS apps requires meticulous attention to detail. From UI design to code implementation, every aspect of the app needs to be carefully crafted to ensure a seamless user experience. iOS developers should have a keen eye for detail and be able to spot and fix even the smallest of bugs or inconsistencies.

3. Clean and Maintainable Code: Writing clean and maintainable code is essential for the long-term success of an iOS app.

Developers should follow best practices and coding conventions to ensure a codebase is easily readable, scalable, and maintainable. This allows for easier collaboration with other developers and minimizes bug or error introduction.

4. Collaboration and Communication: iOS developers rarely work alone. They need to collaborate with designers, product managers, and other team members to bring the app to life.

Effective communication skills are crucial for understanding requirements, discussing ideas, and providing updates on project progress. Good iOS developers should be able to articulate their thoughts clearly and actively participate in team discussions.

5. Continuous Learning: The field of iOS engineering is constantly evolving, with new frameworks, tools, and new technologies introduced regularly.

Skills of iOS Developers

A successful iOS developer should have a thirst for knowledge and a willingness to stay updated with the latest trends and advancements in the iOS ecosystem. They should be proactive about learning new skills and techniques to enhance their app development capabilities.

To ensure customers are completely satisfied, your iOS mobile applications should be of the highest quality. Encourage your iOS developers to follow Apple’s best practices and design guidelines to deliver user-friendly apps that align with Apple Store review expectations.

By considering these additional skills and qualities, you can ensure that you find an iOS developer who not only possesses technical expertise but also has the right mindset and attitude to excel in iOS app development.

How to Evaluate Candidates’ Expertise

During the hiring process, it’s important to assess candidates’ technical expertise to ensure they have the required skills for iOS app development. Conducting technical interviews, coding tests, and reviewing their past projects can help gauge their programming proficiency and problem-solving abilities.

Experience with iOS Frameworks

When conducting technical interviews, it’s essential to ask candidates about their experience with specific iOS frameworks. This will provide valuable insights into their expertise and familiarity with the tools and technologies commonly used in iOS development services. For example, you could ask them about their experience with UIKit, Core Data, or SwiftUI, depending on the role requirements.

Technical Questions

In addition to assessing their knowledge of iOS frameworks, it’s also important to ask candidates in-depth technical questions related to iOS development. These questions can help evaluate their understanding of fundamental concepts and their ability to apply them in real-world scenarios.

For instance, you might ask them to explain the process of handling asynchronous operations in iOS, how they would optimize the performance of a resource-intensive app, what kind of settings they you store in your Info.plist file, or what is the difference between the Float, Double, and CGFloat data types.

Candidate portfolio review

In addition to assessing the candidates’ technical proficiency, it is important to consider their past projects as well. By examining the code they have written and the apps they have developed, you may be able to gain insight into their programming style, code quality, and problem-solving skills. To determine if they have contributed to open-source projects or if they have any personal projects that demonstrate their skills, it is advisable to check their GitHub account or portfolio.

Community involvement

A candidate’s technical expertise should also be evaluated in light of their involvement in the community. Participating actively in the iOS development community, such as contributing to forums, attending conferences, or organizing meetups, can demonstrate an individual’s willingness to learn new things and stay on top of the latest trends in the field as well as their commitment to staying on top of best practices.

In conclusion, evaluating candidates’ technical expertise for iOS app development requires a comprehensive approach.

Look for candidates with proven technical prowess and an in-depth understanding of programming languages such as Objective-C or Swift. Check for expertise in core iOS technologies like Core Data, iOS Animation Library, and Push Notifications.

By conducting technical interviews, coding tests, reviewing past projects, and considering their community involvement, you can make a well-informed decision about their suitability for the role.

Why Experience Matters in iOS Development

iOS Development

Experience is a valuable asset for building iOS mobile applications. An experienced iOS developer has likely encountered various challenges throughout his career and developed effective solutions to overcome them. Having a solid understanding of best practices and industry trends allows them to create efficient and reliable code.

Furthermore, top iOS developers possess a deep understanding of the iOS platform and its capabilities. The developer’s knowledge of the latest technologies, features, and frameworks enables the creation of cutting-edge apps that enhance performance, usability, and overall app success.

In addition to technical expertise, experienced iOS programmers bring valuable insights and recommendations to the table. With their knowledge of user behavior and market trends, they can suggest innovative ideas to enhance your app’s functionality and user experience.

Moreover, experienced iOS developers have a strong network of contacts within the iOS development community. Keeping updated with industry advances and collaborating with other professionals is invaluable in troubleshooting problems and accessing additional resources.

Interview Questions for iOS Developers

When conducting interviews, asking the right questions can help assess candidates’ knowledge and suitability for your project.

While doing this, it’s important to cover areas such as Data, Code architectures, Languages, Frameworks, and Security.

Interview Questions

Let’s break it down:

General questions

  • Can you explain the difference between strong and weak references in Swift?
  • What are the benefits of using Core Data for data persistence in iOS apps?
  • How would you handle memory management in an iOS app?
  • Have you worked with any third-party iOS frameworks or libraries? If yes, which ones and why did you choose them?
  • How do you ensure backward compatibility when developing iOS apps?


  • Can you suggest a reasonable minimum iOS deployment target?
  • In the recent iOS versions, what features excited you the most?
  • What is the best way to round the corners of your views?
  • Can you explain what size classes are used for?
  • In the case of Color or UIColor with values outside the range of 0 to 1, what happens?


  • What is the best way to explain the key paths to a new Swift developer?
  • What is the purpose of the #error compiler directive?
  • Why would you use the final keyword? What does it do?
  • Can you explain the difference between try, try?, and try! in Swift?
  • How do result builders work in Swift, and when should they be used?


  • How do Swift classes and structures differ?
  • How does the Codable protocol work?
  • Could you explain the difference between map() and compactMap()?
  • Where might UUIDs be used?
  • How do one-sided ranges work and when would they be useful?


  • What is the difference between CloudKit and Core Data?
  • How can UserDefaults be used?
  • What are your experiences with StoreKit?
  • What is the difference between GameplayKit and ReplayKit?
  • Name at least three distinct subclasses of CALayer

Code Architectures and App Design Patterns

  • In what ways does Apple’s platform use MVC and MVVM?
  • How would you explain protocol-oriented programming to a new iOS developer?
  • Do you have any experience with functional programming?
  • On Apple’s platforms, what is KVO and how does it work?
  • Can you explain what phantom types are and when they would be useful?


  • Which types of malware threaten iOS devices?
  • How to securely store sensitive information on iOS using the Keychain Services API?
  • How can we test our iOS app for security vulnerabilities before releasing it?
  • What are the best practices for handling sensitive client data on iOS?
  • How can we protect enterprise data on iOS devices?

These questions will help you assess candidates’ problem-solving skills, technical knowledge, and ability to handle real-world scenarios in iOS app development.

Where to Hire iOS Developers

Hire iOS Developers

There are several avenues to finding experienced iOS developers. Each method has its advantages and can help you attract a diverse pool of talented candidates:

  • Online platforms with expert-vetted talent and portals like LinkedIn, Indeed, and Stack Overflow allow you to connect with the best remote iOS developers.
  • Networking with other industry professionals, attending iOS development meetups, and participating in online developer communities can help you find top iOS developers.
  • Hiring an iOS app development agency or outsourcing the project to experienced iOS developers can save time and ensure high-quality results.

Consider combining multiple channels to increase your chances of finding the right developer for your project.


Hiring experienced iOS developers is crucial for building successful iOS apps that provide a seamless user experience and drive business growth. By understanding the importance of iOS development, assessing candidates’ technical skills, and leveraging the right hiring channels, you can ensure that your project is in capable hands.

Remember to thoroughly evaluate candidates’ expertise in iOS development languages, frameworks, and tools. Conducting technical interviews and asking relevant questions will help you make an informed decision.

With the right iOS development team, you can bring your app idea to life and create a valuable addition to your business.

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