15 iOS Interview Questions for Hiring iOS Engineers in 2025

Even though Android’s market share is still leading in the global arena (this mobile OS holds 71%), iOS development services are on-demand in 2024. According to the Statista report, the number of app releases for the Apple iPhone operational system is over 35,000 monthly this year. 

Bar chart showing monthly app releases from March 2019 to June 2024, measured in thousands, with a notable peak in September 2019 exceeding 100,000 releases

It is expected that these statistics will be ever-growing in 2025 due to high users’ requests for trendy applications powered by AI, smart homekit options, blockchain, VR, iBeacon, etc. iPhone pocket screens are more adaptable to digital innovations in comparison with gadgets with Android OS. 

If you are searching for a skillful iOS app developer for hire, it is better to explore the relevant talent pools, destinations with competent offshore technicians, and types of apps that hold the biggest share, etc. 

Finally, you will be able to interview the best-matching candidates and complete your employment process successfully. But first, prepare for your introductory stage to hire an iOS programmer your project and team really need.

Where to Start? Your Best Intro to Hire Remote iOS Developers

Before making a list of interview questions for candidates, take a closer look at trends, the best destinations with talented mobile app developers, and the most popular types of iOS applications users are searching in the Apple Store or other marketplaces. These analytical insights will help you plan your project properly and initiate a result-driven search for experienced technicians.

According to the Statista report for the last quarter of 2024, the most popular iOS apps are games, business-related, and utilities. Education, lifestyle, and shopping applications are also on-demand in 2024. The same list of top iOS apps is expected in 2025. 

Table listing app categories by share of apps: Games (11.86%), Business (10.11%), Utilities (9.73%), Education (9.56%), Lifestyle (7.6%), Food & Drink (6.62%), Health & Fitness (5.68%), Productivity (5.14%), Shopping (5.12%), Finance (4.38%), Entertainment (3.82%), Travel (3.33%), and Sports (2.67%)

If you are searching for skillful programmers who can deliver high-quality digital products for iPhone devices, it is reasonable to check all the networking channels first. Hire iOS developers on tech forums, job websites, and freelance platforms. But remember about alternative talent pools to hit. 

For example, Wild.Codes can meet all your recruitment requirements and speed up the search for technicians at your request via AI-vetted and expert-verified portfolios of competent devs. Additionally, try social media employment strategies while surfing LinkedIn, X, and GitHub.

Speaking about the best destinations where you can find offshore mobile app devs, there are six countries with a sound number of programmers who make a specialty out of iOS & Android development:

  • Poland;
  • Ukraine;
  • China;
  • Argentina;
  • Romania;
  • India;
  • The Philippines.
Map highlighting the best destinations to find mobile app developers, including Argentina, Poland, Ukraine, Romania, India, the Philippines, and China

Each region is notable for its culture fit, tech stack, and programming style. Let’s check the main reasons to hire iOs app developers in these or those countries from the top list:

iOS Development Features
Country iOS Development Distinctive Features
USA
  • Home to top-tier tech companies;
  • High development costs;
  • Swift and Objective-C expertise;
  • Proven experience with global projects.
Germany
  • Strong focus on quality assurance;
  • Proficiency in Kotlin and Swift;
  • Collaborative approach to app design;
  • Cross-functional development teams.
Ukraine
  • Rapidly growing IT market;
  • Affordable development rates;
  • High proficiency in Swift and Objective-C;
  • Fluent English-speaking developers.
India
  • Cost-effective development services;
  • Large pool of skilled programmers;
  • Proficiency in Swift and React Native;
  • Strong project delivery capabilities.
Canada
  • Strong focus on app security;
  • Advanced Swift expertise;
  • Proven experience in fintech and health apps;
  • High English fluency.
Brazil
  • Dynamic and creative developers;
  • Affordable hourly rates;
  • Swift and Kotlin expertise;
  • Great cultural alignment with North America.
Australia
  • Expertise in high-quality mobile apps;
  • Proficiency in Swift and Flutter;
  • High focus on UX/UI design;
  • Efficient communication in English.

To summarize, iOS app developers for hire from China, the Philippines, or Argentina can meet your technical requirements but fail some organizational moments because of different time zones. IT specialists from Eastern Europe will come in handy to solve almost any tasks related to mobile app development at reasonable hourly rates. Indian programmers are also in favor due to low costs for programming services and a high-level quality-price ratio. 

When you have already picked sides with the destinations, programming languages, technical tasks, and other demands of your ideal iOS developer for hire, let’s explore the best questions to have an extremely informative interview and find your perfect match.

Hire Remote iOS Developers Hassle-Free: 15 Questions for Your Interview with Candidates

We recommend starting with conversational and warm-up questions with some psychological background. Ask your interviewee about his/her hobbies, favorite colors, things that inspire, etc. Make your dialog maximally friendly to exclude stress and any form of constraint. To check the tech skills of your potential iOS developer, use these questions:

  1. Name all the main architectural patterns in iOS development.
  2. Explain the iOS lifecycle. Describe it briefly.
  3. Compare frame and bounds in iOS.
  4. What are the differences between UITableView and UICollectionView?
  5. When do you use the @IBOutlet reference and the @IBAction method?
  6. Name SWIFT optionals and closure.
  7. Which is your favorite design pattern in iOS? Why?
  8. Compare synchronous and asynchronous tasks in iOS.
  9. Describe memory & retain cycles in iOS.
  10. What is NotofocationCenter? When do you use this method?
  11. Describe persistent iOS-driven solutions you have already used. What was your best experience?
  12. Have you recently used UI Testing and Unit Testing in iOS? Which insights can you share based on this experience?
  13. What is your algorithm for using Dependency Injection in iOS?
  14. Which way do you usually implement animations in UITableView?
  15. What will your actions be if the memory leak is verified?

Remember that you can use similar questions for thought-provoking dialog or try your interviewee to ask about these or those scenarios. Let him/her describe the strategy that will be the ebay-matching for various situations during iOS development processes. 

We hope that such an interview will bring you a detailed explanation and 100% acknowledgment of your potential dev’s skills and expertise. We wish you find your perfect match. Reach new heights with your star team and the new IT specialists you will hire for your successful project!

Laravel Developer’s Skills Described
CSS, HTML, and JavaScript knowledge;

PHP expertise;

Database management skills;

Jungling traits, methods, objects, and classes;

Agile & Waterfall understanding and use;

Soft skills (a good team player, high-level communication, excellent problem-solving background, and many more)
Laravel Developer’s Qualifications Mentioned
Oracle 12c, MySQL, or Microsoft SQL proficiency;

OOP & MVS deep understanding;

Knowledge of the mechanism of how to manage project frameworks;

Understanding of the business logic the project meets;

Cloud computing & APIs expertise.
Laravel Developer’s Requirements to Specify
Self-motivation and self-discipline;

Reasonable life-work balance;

The opportunity to implement the server-side logic via Laravel algorithms;

Hassle-free interaction with back-end and front-end devs;

Strong debugging profile.
Front-End JS
Requirements:
Building the client side of the website or app

Using HTML, XHTML, SGML, and similar markup languages

Improving the usability of the digital product

Prototyping & collaboration with back-end JS experts

Delivery of high-standard graphics and graphic-related solutions
Skills & qualifications:
HTML & CSS proficiency;

Using JS frameworks (AngularJS, VueJS, ReactJS, etc

Back-End JS
Requirements:
Be responsible for the server side of websites and apps

Clean coding delivery and timely debugging & troubleshooting solution delivery

UI testing and collaboration with front-end JS teammates

Skills & qualifications:
Node.js and another similar platform expertise

Database experience

Building APIs while using REST or similar tech solutions
Full-Stack JS
Requirements:
Expertise in client-side & server-side questions

Collaboration with project managers and other devs

Delivery of design architecture solutions

Creation of designs & databases

Implementation of data protection and web cybersecurity strategies.
Skills & qualifications:
Leadership, communication, and debugging skills

Both front-end and back-end qualifications

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