Register for our upcoming webinar:  

Why Tech Screening Fails to Uncover True Talent

Thursday | May 30, 2024 1pm ET

Register Now

How To Hire A React Native Developer

React Native developers are essential for building cross-platform mobile applications efficiently. React Native is crucial because it allows developers to write code in JavaScript and utilize a single codebase to target both iOS and Android platforms. This significantly reduces development time and costs while enabling faster iteration and maintenance.

React Native, developed by Facebook, was first released in March 2015 as an open-source framework for mobile app development. It was created to address the need for a more efficient and cost-effective way to build cross-platform mobile applications. Over the years, React Native has gained widespread adoption in the developer community and has been embraced by companies worldwide, making it a leading choice for mobile app development.

React Native Developers: Why are they needed?

React Native developers specialize in a framework that allows companies to efficiently build and maintain mobile applications for both iOS and Android platforms using a single codebase. Companies across various industries hire React Native developers to reduce development costs, accelerate time-to-market, and maintain a consistent user experience across platforms.

Startups and enterprises choose React Native developers to create mobile apps that can scale rapidly and be updated easily, thus maximizing their reach and minimizing development overhead. Industries like e-commerce, finance, healthcare, social media, and travel extensively hire React Native developers due to the framework's flexibility, performance, and the ability to tap into the vast React Native developer community and ecosystem.

Skills required

  • JavaScript
  • React
  • React Native framework
  • Mobile app development
  • Component-based architecture
  • State management
  • Responsive and adaptive design

Job titles

  • Mobile App Developer
  • React Native Engineer
  • React Native Application Developer
  • React Native iOS Developer
  • React Native Android Developer
  • React Native App Architect
  • React Native Lead Developer

React Native Developer Assessment

The most common assessment framework for React Native Developers on HackerEarth includes

A combination of technical evaluations, coding exercises, and behavioral assessments. Here are some common components of the assessment framework:

Code completion tasks

A React Native developer hiring assessment should include questions that are relevant. Code completion tasks play a crucial role in evaluating a React Native developer's expertise in writing correct and well-formed code, as well as their understanding of fundamental concepts in JavaScript, React, and the React Native framework. Therefore, these tasks will help you hire React Native developer who has the ability to build mobile applications using React Native effectively.

Multiple-choice questions (MCQs)

A good way to assess a developer's technical knowledge of React Native Developer skills, language features, and best practices is through MCQs. They can cover a wide range of topics, including React Native concepts, language features, and best practices. MCQs provide a structured approach to evaluate a developer's understanding of fundamental concepts. Therefore, it should be included in the React Native developer hiring assessment.

Project-specific questions

While preparing for the React Native interview assessment, you can also include project-specific questions to assess a candidate's knowledge. It can vary depending on your requirements. For example, evaluating their ability to integrate third-party libraries. It can also help assess their proficiency in state management solutions such as Redux or MobX, and their knowledge of optimizing app performance.

Language-specific questions

React Native Developers can be asked questions related to programming concepts and machine learning algorithms. Asking very basic and technical questions can also help assess the candidate’s knowledge and skill sets. During the React Native developer hiring assessment, questions about fundamental JavaScript concepts, ES6 features, React Native architecture, and navigation solutions like React Navigation are critical to evaluate their proficiency.

Our bias-free, objective platform has facilitated 1,00,000+ assessments

Steps to Create a React Native Developer Interview Assessment on HackerEarth

  1. Log in to Hackerearth assessments
  2. Add questions from our library and create a test
  3. Send invites to candidates
  4. Evaluate our AI-assisted report and shortlist candidates

Assess React Native Developer for free

Click here now

Sample Questions to Ask a React Native Developer

  • Create a React Native component that has a button. When the button is clicked, it should change the component's state, and the updated state should be displayed on the screen.
  • Create a React Native component that takes an array of items as a prop and renders them as a list with each item displayed as a list item.
  • Implement basic navigation in a React Native app using React Navigation. Create two screens, and add a button on the first screen that navigates to the second screen when clicked.
  • Style a React Native component to have a centered text with a background color, border, and padding.
  • Create a basic animation in React Native, such as a fade-in or slide-in animation, when a component is mounted.

  • What is JSX in React Native?
    1. JavaScript Extensible Syntax
    2. JavaScript XML
    3. JavaScript Extension Markup Language
    4. JavaScript Style Extension

  • Which navigation library is commonly used in React Native for building navigation stacks and drawers?
    1. React Navigation
    2. Redux Navigation
    3. React Router
    4. NavigationJS

  • Which of the following is NOT a valid data flow in React Native?
    1. Props down, events up
    2. State up, props down
    3. Context API
    4. Redux store

  • What is the virtual DOM in React, and why is it important for performance optimization?
  • How does data flow in a React application? Explain the concepts of props and state.
  • What are React Hooks, and why were they introduced? Provide examples of commonly used hooks.
  • What is conditional rendering in React? Provide an example of how you conditionally render components or elements based on certain conditions.
  • What is the purpose of keys in React when rendering lists of elements?

  • Explain the difference between unit tests, integration tests, and end-to-end tests, and provide examples of when you might use each type in a React Native project.
  • What is a snapshot test in Jest, and when would you use it in React Native development?
  • Explain the concept of mocking in Jest. Why is mocking useful in testing React Native components that interact with external dependencies like APIs or libraries?
  • Explain how you can test React Native components that use navigation libraries like React Navigation. What considerations should you keep in mind?
  • What is the role of test suites in Jest, and how do you group related tests together using suites?

These sample questions provided here are for interviewing early-experience talents. For more customized assessments for candidates with higher experience, you can contact our team at contact@hackerearth.com or request a demo here.

Guidelines for Writing Job Description for React Native Developers

Job title

A React Native developer job description should begin with a clear and concise job title that reflects the role, such as "React Native Engineer", "React Native Lead Developer", and “React Native App Architect”. Writing specific roles can help you attract and hire React Native developer who is best suited for your organization.

Job summary

In the React Native developer job description, provide a brief overview of the position, focusing on the essential responsibilities and objectives. Describe the main aspects of the role and how it contributes to the company's goals.

Responsibilities

Outline the specific tasks and responsibilities that the React Native developer will be expected to handle. This may include:

  • Designing and developing user interfaces (UIs) for mobile applications using React Native components
  • Managing application state using React's built-in state management, React Context, or external libraries like Redux or MobX
  • Creating reusable React Native components and ensuring they adhere to best practices and design guidelines
  • Participating in code reviews to ensure code quality, consistency, and adherence to coding standards
  • Preparing and building the application for deployment to app stores
  • Keeping up-to-date with the latest developments

Skills and qualifications

List the essential React Native developer skills and qualifications that candidates must possess, including, but not restricted to:

  • Proficiency in JavaScript and ES6+ features
  • Strong understanding of React and React Native, including components, props, state, and hooks
  • Knowledge of Redux, MobX, or other state management solutions
  • Experience with navigation libraries like React Navigation
  • Familiarity with asynchronous programming and APIs
  • Testing skills using Jest or other testing frameworks

Listing out all the essential skills will help you hire React Native developer with the right skillset for the job.

Preferred skills

Mention any additional React Native developer skills or qualifications that would be beneficial but not mandatory for the role. You can also ask for experience with specific tools, libraries, or frameworks.

Education and experience

Another important thing that you can mention in the React Native developer job description is the educational background and professional experience required for the position. This could range from a bachelor's degree in computer science or a related field to several years of relevant experience.

Company culture and EVPs

Briefly highlight your company's culture, values, and any unique perks or benefits offered to employees that can help attract candidates who align with your company's ethos. And thus help you hire React Native developer who is best suited to work in such work environment.

Application instructions

Provide instructions on how candidates can apply for the position. Include where to send their resume, portfolio, or other required documents. Also, specify the deadline for applications, if applicable.

Equal Opportunity Statement

Include a statement affirming that your company is an equal opportunity employer committed to diversity and inclusion.

You can incorporate gender-neutral pronouns like 'they/them' to promote an inclusive workplace. Additionally, it's beneficial to align your developer personas with your job profiles before advertising an open position. This approach ensures that your job descriptions resonate with a diverse range of candidates.

Download our guide for writing better developer personas

How to Conduct React Native Developer Job Interview

Skill-first hiring requires that the developer interview process be designed to understand the candidate’s skill and experience in the given domain. You can consider the following guidelines when conducting a face-to-face interview with a React Native Developer:

Conduct a real-time technical assessment

Usually candidates are given a remote assessment before the interview. However, using the interview platform to assess skills in real time will tell you a lot about the candidate’s communication skills and thought process.

FaceCode is HackerEarth’s flagship tech interview platform with a built-in question library you can use to test the candidate’s knowledge of React Native concepts. The built-in IDE environment can be used for assessing their ability to write clean, efficient, and maintainable code. You can also use the pair-programming method to observe their problem-solving approach, logical thinking, and attention to detail.

Understand the candidate’s project experience and review the portfolio

During the interview, explore the candidate's past and present projects. Focus on their personal contributions and the skills they used. Ask them to discuss a React Native project, detailing their responsibilities, problem-solving, and collaboration. If available, review their portfolio or code samples for coding style, documentation, and project quality.

Understand if they are a good culture and team fit

While technical skills are essential for a developer, the significance of cultural fit should not be overlooked. The ideal candidate must possess not only accurate coding abilities but also effective communication and collaboration skills to thrive in agile and collaborative environments. Evaluating a candidate's capability to work both independently and collaboratively in a team is crucial. This assessment provides valuable insights into the candidate's problem-solving skills, communication, and adaptability, helping to determine their fit for the role and the team dynamics.

Start free trial

30,000+ recruiters and hiring Managers across 1000+ businesses grow their tech teams with HackerEarth

Amazon
Barclay
Intuit
Paypal
Siemens
Walmart

FAQs

When hiring a React Native developer, you should look for candidates with a strong foundation in JavaScript and ES6+. They should also have a proven track record in React and React Native development, as well as experience with state management solutions like Redux or MobX.

A Bachelor's degree in Computer Science or a related field can be advantageous. But practical experience, certifications in React Native, and a robust portfolio showcasing relevant projects are equally important. Having a proactive attitude towards learning new technologies is also a critical qualification to seek in a React Native Developer.

When hiring a React Native Developer, it's not always necessary for the candidate to have experience in every single tool or library associated with React Native. However, the candidate should have proficiency in the core tools and technologies commonly used in React Native development, such as React, JavaScript/ES6, React Navigation, state management (e.g., Redux or MobX), and testing with Jest.

The level of expertise required in each tool or library may vary depending on the specific role and project requirements. It's essential to assess the candidate's familiarity with the key tools and their ability to learn and adapt to new technologies as needed. Additionally, candidates who are well-versed in a broader range of tools may be particularly valuable for more complex or diverse projects, but this can vary based on the job description and the team's needs.

A React Native App Architect should possess an extensive skillset encompassing advanced knowledge of React Native, JavaScript, and ES6+ features. They should also have an expertise in architectural design patterns and best practices for building scalable and maintainable mobile applications. They should excel in structuring and organizing complex codebases, implementing efficient state management solutions like Redux or MobX, and optimizing performance through profiling and debugging.

Strong leadership and communication skills are essential for guiding development teams, making architectural decisions, and collaborating effectively with stakeholders. Additionally, proficiency in cross-platform development, familiarity with native modules and libraries, and a deep understanding of mobile app deployment processes to app stores are crucial.

To assess a candidate's real-world project-handling skills for React Native development, start by reviewing their portfolio, which should showcase a range of projects with varying complexities and functionalities. Look for evidence of their contributions, such as the specific features they implemented, their role in the project (e.g., lead developer or team member), and the technologies and tools used.

Additionally, conduct technical interviews or coding assessments that simulate real-world scenarios, asking the candidate to solve problems or build components relevant to your project needs. Seek feedback from previous employers or colleagues, and ask the candidate to explain their decision-making process and problem-solving strategies in previous projects. Finally, consider including a collaborative coding session to assess their ability to work with your existing team.

The requirement for React Native Developer skills varies significantly across different job roles in the software development industry. For a Junior React Native Developer, the emphasis may be on a solid foundation in React Native basics, proficiency in JavaScript, and an ability to work under supervision. In contrast, a Mid-Level React Native Developer is expected to have hands-on experience in developing mobile applications, knowledge of state management solutions, and the capability to work more independently on projects. Senior React Native Developers should possess advanced expertise in React Native, architectural design skills, the ability to mentor and lead teams, and experience in optimizing app performance and scalability.

Additionally, React Native Architects are required to demonstrate mastery in React Native, possess strong leadership and architectural design skills, and guide teams in making crucial technical decisions for complex projects.