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How To Hire A Full Stack Developer

Full Stack Developers possess the capability to design user interfaces that are not only aesthetically pleasing but also intuitive and user-friendly. They can create responsive and interactive designs that enhance the user experience, resulting in higher engagement and satisfaction.

Let’s take the example of the creation of an online marketplace. A Full Stack Developer can design an engaging frontend interface that showcases products attractively and facilitates user navigation. They can then implement the necessary backend infrastructure to securely manage product listings, user profiles, and transactions.

Full Stack Developers: Why are they needed?

Full Stack developers can handle both front-end and back-end components of web applications. On the frontend, they leverage languages like HTML, CSS, and JavaScript to craft engaging user interfaces that are responsive and visually appealing. Simultaneously, on the backend, full stack developers harness server-side languages such as Python, Ruby, or Node.js, along with databases like MySQL or MongoDB, to manage data storage, security, and complex application logic.

Industries require the proficiency of full stack developers. For instance, in the realm of healthcare technology, they are essential for building electronic health record systems that ensure data accuracy and privacy. In the travel and hospitality sector, full stack developers are crucial for crafting booking platforms that integrate real-time availability checks with secure payment gateways.

Skills required

  • React, Angular, Vue.js
  • Node.js, Python, Ruby
  • MySQL, PostgreSQL
  • RESTful, GraphQL APIs
  • Deployment

Job titles

  • Software Engineer
  • Web Developer
  • Application Developer
  • JavaScript Developer
  • Web Application Developer
  • Product Engineer

Full Stack Developer Interview Assessment

The most common assessment framework for Full Stack Developers on HackerEarth includes

A combination of technical evaluations, coding exercises, and behavioral assessments. Here are some common components of the assessment framework that will help you find Full Stack developer with the best skillset:

Code completion tasks

Full Stack developer hiring assessment involves a coding problem or task the developer needs to solve using available tools. Code completion tasks assess a candidate's understanding of syntax and their ability to write correct and well-formed code. It will help you assess important Full Stack developer skills that you need for your project.

Multiple-choice questions (MCQs)

In a Full Stack developer interview assessment, MCQs play a good role to assess a developer's technical knowledge. They can help in evaluating a developer's understanding of full stack fundamentals. During the Python developer hiring assessment, these are the key questions that bridge both general and technical areas.

Project-specific questions

You can also add questions that are specifically tailored to the project requirements. These questions can range from relevant tools required during the project to code completion tasks. And it will help you hire dedicated Full Stack developer with the right skills.

Language-specific questions

Full Stack developer hiring assessment can be tailored for one of these topics such as HTML, CSS, and JavaScript, along with an understanding of responsive design and user interface development. On the back-end side, you can ask questions related to server-side languages like Node.js, databases like MySQL or MongoDB, and their ability to create and consume APIs. It will help you Hire Full Stack developer who has exceptional practical skills. A basic understanding of version control using Git, familiarity with debugging techniques, and knowledge of web security principles should also be evaluated as well.

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

Steps to Create a Full Stack Developer 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 Full Stack developers for free

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Sample Questions to Ask a Full Stack Developer

  • Create a responsive webpage that displays a list of products fetched from an API. Include search and sorting functionalities.
  • Develop a RESTful API for a blog application with CRUD operations for posts and comments. Implement authentication.
  • Describe preventing SQL injection, XSS, and CSRF attacks in a web app.
  • Implement user registration and login functionality using JWT (JSON Web Tokens).
  • Ensure password hashing and secure storage.

  • Which HTTP status code indicates a successful request?
    1. 404 Not Found
    2. 200 OK
    3. 500 Internal Server Error
    4. 302 Found

  • What does CRUD stand for in the context of database operations?
    1. Create, Read, Update, Delete
    2. Control, Report, Update, Delete
    3. Copy, Read, Undo, Delete
    4. Change, Request, Update, Duplicate

  • Which HTTP method is typically used for retrieving data from a server?
    1. GET
    2. POST
    3. PUT
    4. DELETE

  • What is JSX in React? How does it differ from regular JavaScript syntax?
  • How can you prevent unnecessary re-renders of a component in React?
  • Explain the concept of "immutable data" and its importance in React programming.
  • Describe the purpose of the "useState" and "useEffect" hooks in React. When would you use them?
  • What is server-side rendering (SSR) in React? What are the advantages and challenges of implementing SSR?

  • What is clustering in Node.js? How can you utilize clustering to take advantage of multi-core processors?
  • What is Express.js, and why is it commonly used with Node.js?
  • What is Express Router? How does it help you organize and modularize your routes?
  • What is middleware in Express? How is it used to enhance the functionality of an Express application?

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 or request a demo here.

Guidelines for Writing Job Descriptions for Full Stack Developers

Job title

A Full Stack developer job description should begin with a clear and concise job title that reflects the role, such as "Full Stack Developer", "Web Developer”, and “Software Developer”. Therefore, before you hire Python developer, consider the specific roles you need to hire for.

Job Summary

The Full Stack developer job description should 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. Hire Full Stack developer whose values and technical skills best align with the job requirements.


The Full Stack developer job description should outline the specific tasks and responsibilities that the full stack developer will be expected to handle. Hire Full Stack developer who perfectly fits your startup or company. This may include:

  • Developing both frontend and backend components of web applications
  • Creating and managing databases, as well as handling data storage and retrieval
  • Implementing user authentication and authorization systems
  • Designing and building user interfaces for optimal user experience
  • Collaborating with designers, backend developers, and other team members
  • Ensuring responsiveness and compatibility across various devices and browsers
  • Keeping up with industry trends, best practices, and emerging technologies

It's an important part of the Full Stack developer job description. These key points will help developers understand the job requirements. Including these key points beforehand can also help you filter out candidates. And thus help you hire Full Stack developer with the right skillset.

Skills and qualifications

Before you hire Full Stack developer, list the essential skills and qualifications that candidates must possess, including, but not restricted to:

  • Proficiency in frontend technologies (HTML, CSS, JavaScript)
  • Experience with frontend libraries and frameworks (React, Angular, Vue.js)
  • Familiarity with server-side languages (Node.js, Python, Ruby, PHP)
  • Backend frameworks (Express.js, Django, Ruby on Rails)
  • API design and integration (RESTful APIs, GraphQL)

Numerous Full Stack developer skills are essential for becoming an adept developer. For aspiring developers, continuous learning and staying updated on the latest Full Stack developer skills and technologies are key to staying competitive in the industry.

Preferred skills

Mention any additional Full Stack 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. To become a Full Stack developer, proficiency in Full Stack developer skills is imperative in the list of top programming languages. Hire dedicated Full Stack developer who is technically proficient and is a good team player.

Education and experience

Before you choose to hire Full stack developer, specify 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.

To hire Full Stack developer, it's important to recognize that the cost will fluctuate based on the experience and expertise needed to successfully execute your project.

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. You should hire dedicated Full Stack developer who is not only technically sound but also is a team player.

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. This is one of the most important things you should add while writing the Full Stack developer job description.

Equal Opportunity Statement

Include a statement about your organization’s dedication to fostering diversity, inclusivity, and equal opportunity.

In today's diverse and inclusive professional landscape, potential candidates often view such statements as a positive indication of a company's dedication to fairness and equal treatment. Therefore, when seeking to hire Full Stack developer, explicitly emphasizing your organization's status as an Equal Opportunity Employer helps foster inclusivity and diversity.

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 Full Stack 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 full stack developer:

Conduct a real-time technical assessment

The interviewee would most likely have completed a take-home 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 - skills that are not evident in an assessment.

FaceCode is HackerEarth’s flagship tech interview platform with a built-in question library you can use to test the candidate’s knowledge of Full Stack development 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 Full Stack developer hiring assessment, take the opportunity to delve into the candidate's past and present projects. Emphasize their personal contributions and the specific skills they employed in each project. Before you hire Full Stack developer, ask them about any current full-stack project they worked on, encouraging them to elaborate on their responsibilities, problem-solving strategies, and collaboration within the team. If the candidate has a portfolio or code samples available, make sure to review them.

By thoroughly exploring their project history and assessing their code samples, you'll gain valuable insights into their practical skills, problem-solving prowess, and the extent of their experience working in a full stack capacity.

Understand if they are a good culture and team fit

Before you hire Full Stack developer, consider these points. While skills make a good developer, one cannot negate the importance of culture fit in the developer world. A full stack developer not only possesses the technical skills but also actively contributes to a cooperative, respectful, and growth-oriented team environment is likely to be a strong cultural fit. Therefore, evaluating a candidate's capability to work both independently and collaboratively in a team is crucial. This assessment will provide valuable insights into the candidate's problem-solving skills, communication, and adaptability, helping to determine their fit for the role and the team dynamics.

And during this evaluation, hiring managers can talk about their team culture and values. Thus giving the candidate a clear understanding of the environment and whether they would be a good fit in the team. These key points will make the process easier and help you hire dedicated full stack developer

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You should look for candidates with a solid foundation of technical skills including proficiency in frontend technologies frameworks such as React, Angular, or Vue.js. Proficiency in multiple backend languages like Node.js, Python, or Java, along with database management expertise and API integration capabilities, are essential. Skills and project experiences should be given preference over any kind of degree.

Strong problem-solving abilities, effective communication, adaptability, and collaborative skills are crucial personal traits for success in the software industry. A history of delivering quality projects is also something you should look for. Staying updated with emerging technologies, and demonstrating a deep understanding of software development principles further distinguish an exceptional Full Stack developer.

While it's not always necessary for a candidate to have experience in all the necessary tools, having proficiency in at least one relevant tool is often sufficient. Full Stack development involves a wide array of technologies. What's crucial is the candidate's ability to demonstrate a solid foundation in fundamental concepts, problem-solving skills, and an eagerness to learn new tools and technologies rapidly.

However, if your specific project or team requires expertise in certain tools, you should prioritize those candidates. Because this will lead to a quicker onboarding process.

A skilled JavaScript Developer is proficient in core JavaScript, including DOM manipulation and asynchronous programming. Experience with frontend libraries and frameworks like React, Angular, or Vue.js enables the creation of dynamic user interfaces. On the backend, Node.js expertise empowers server-side development and API creation.

Knowledge of various tools, build systems, and package managers streamline the development process. JavaScript's presence on both frontend and backend platforms allows Full Stack Developers to create seamless, end-to-end applications.

You should begin by reviewing their portfolio. Engage in in-depth discussions about their past projects, focusing on problem-solving approaches, and project architectures. Request a code walkthrough to evaluate their coding practices, structure, and design decisions. Inquire about their collaboration experience within cross-functional teams, testing practices, and their adaptability to new technologies.

Present hypothetical scenarios to test their problem-solving abilities. Additionally, you can also discuss challenges they've encountered.

The requirement for Full Stack Developer skills can vary significantly across different job roles within the software industry. In startups and small companies, Full Stack Developers often need to be versatile and proficient in a wide range of technologies, handling both frontend and backend development, along with database management and deployment.

These skills are useful in roles beyond conventional development positions. For DevOps Engineers, these skills enable effective infrastructure management and streamlined deployment. Product Managers leverage them to comprehend technical intricacies and prioritize features wisely. UI/UX Designers benefit by crafting designs aligned with practical implementation.