JavaScript Developer Job Description [Updated for 2024]

javascript developer job description

In the era of digital advancement, JavaScript developers are more essential than ever.

As technology evolves, the demand for skilled professionals who can create, enhance, and secure our digital infrastructure grows exponentially.

But what exactly is expected from a JavaScript developer?

Whether you are:

  • An aspiring developer seeking to understand the core of this role,
  • A hiring manager drafting the profile of the ideal candidate,
  • Or simply curious about the intricacies of JavaScript development,

You’ve come to the right place.

Today, we present a customizable JavaScript developer job description template, tailored for effortless posting on job boards or career websites.

Let’s delve into it.

JavaScript Developer Duties and Responsibilities

JavaScript Developers use their knowledge of JavaScript, HTML, and CSS to design, develop, and implement web applications.

They often collaborate with team members to create and manage web development projects, analyze user needs, and create solutions.

Their duties and responsibilities often include:

  • Developing new user-facing features using JavaScript and its popular frameworks
  • Building reusable code and libraries for future use
  • Ensuring the technical feasibility of UI/UX designs
  • Optimizing applications for maximum speed and scalability
  • Validating user input before submitting to the back end
  • Collaborating with other team members and stakeholders
  • Translating design wireframes into the code that will produce visual elements of the application
  • Implementing automated testing platforms and unit tests
  • Keeping up to date with emerging technologies and trends in JavaScript development


JavaScript Developer Job Description Template

Job Brief

We are seeking a skilled JavaScript Developer to join our innovative team.

Your primary focus will be developing user-facing web applications and components, implementing them with the React.js or Node.js frameworks.

JavaScript Developer responsibilities include designing and developing new features, maintaining code quality, organization, and automatization.

The ideal candidate will be proficient in JavaScript, HTML, and CSS, and have excellent project management skills.

Ultimately, a top-notch JavaScript Developer should have a firm understanding of software development life cycle, and a knack for visual design and utility.



  • Develop new user-facing features
  • Build reusable code and libraries for future use
  • Ensure the technical feasibility of UI/UX designs
  • Optimize applications for maximum speed and scalability
  • Collaborate with other team members and stakeholders
  • Implement responsive design for mobile devices
  • Stay up-to-date on emerging technologies
  • Participate in code reviews and team meetings
  • Translate designs and wireframes into high-quality code



  • Proven experience as a JavaScript Developer
  • Strong understanding of JavaScript, its quirks, and workarounds
  • Proficiency in HTML5, CSS3
  • Experience with React.js, Node.js or similar frameworks
  • Understanding of RESTful services and APIs
  • Experience with front-end tools such as Babel, Webpack, NPM, etc.
  • Understanding of browser rendering behavior and performance
  • Ability to understand business requirements and translate them into technical requirements
  • A degree in Computer Science or a related field



  • 401(k)
  • Health insurance
  • Dental insurance
  • Retirement plan
  • Paid time off
  • Professional development opportunities


Additional Information

  • Job Title: JavaScript Developer
  • Work Environment: Office setting with options for remote work. Some travel may be required for team meetings or client consultations.
  • Reporting Structure: Reports to the Lead Developer or Development Manager.
  • Salary: Salary is based upon candidate experience and qualifications, as well as market and business considerations.
  • Pay Range: $80,000 minimum to $150,000 maximum
  • Location: [City, State] (specify the location or indicate if remote)
  • Employment Type: Full-time
  • Equal Opportunity Statement: We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
  • Application Instructions: Please submit your resume and a cover letter outlining your qualifications and experience to [email address or application portal].


What Does a JavaScript Developer Do?

JavaScript Developers are typically employed by software companies or work as freelance individuals across industries.

Their primary role involves designing and implementing user-facing features for web applications using JavaScript, a high-level programming language.

JavaScript Developers work closely with other developers and software engineers to integrate their JavaScript code with other technologies such as CSS and HTML.

They also collaborate with designers to ensure the visual elements of a website function as intended.

A significant part of their job involves debugging and troubleshooting to ensure the code runs smoothly without errors.

They also perform testing to verify the functionality, performance, and security of the application.

In addition, JavaScript Developers often contribute to the improvement of the overall user experience (UX) on websites and applications.

They may also be responsible for ensuring the codebase remains clean and well-organized for optimal performance and scalability.

Lastly, JavaScript Developers typically stay updated on the latest trends and technologies in JavaScript development to integrate these into their work for creating more efficient and innovative web applications.


JavaScript Developer Qualifications and Skills

JavaScript Developers should possess an array of technical skills, soft skills and understanding of development principles, including:

  • Proficiency in JavaScript language and its modern ES6+ syntax and features.
  • Understanding of core principles of object-oriented programming, functional programming and knowledge of data structures and algorithms.
  • Experience with popular JavaScript frameworks and libraries such as React.js, Vue.js, or Angular.js.
  • Ability to write efficient, secure, well-documented, and clean JavaScript code.
  • Familiarity with development aiding tools such as Babel, Webpack, NPM, etc.
  • Understanding of server-side rendering and its benefits and use cases.
  • Knowledge of how to interact with RESTful APIs and formats (JSON, XML).
  • Proficiency in browser rendering behavior and performance.
  • Ability to work effectively in a collaborative team environment, as well as independently.
  • Strong problem-solving skills with the ability to troubleshoot and debug issues.
  • Excellent communication skills to effectively collaborate with team members and stakeholders.
  • Attention to detail, time management skills, and the ability to handle multiple projects simultaneously.


JavaScript Developer Experience Requirements

JavaScript Developers typically start by earning a Bachelor’s degree in Computer Science, Information Technology, or a related field, where they gain foundational knowledge of programming and computer systems.

For entry-level roles, employers often seek candidates with 1 to 2 years of hands-on experience in JavaScript and related technologies such as HTML5, CSS, Node.js, and AJAX.

This experience can be gained through internships, part-time roles, or even self-directed projects.

Those with 3 to 5 years of experience are often considered for mid-level roles and are expected to have a deeper understanding of JavaScript, including experience with JavaScript frameworks like React.js, Angular.js, or Vue.js.

They should also demonstrate experience in building and maintaining complex web applications.

Candidates with more than 5 years of experience are usually considered for senior roles.

They are expected to have extensive knowledge of JavaScript, including advanced concepts and performance optimization techniques.

They may also have leadership experience, having mentored junior developers or led project teams, and may be ready for a managerial or team-lead position.

In addition to the above, experience with testing and debugging, understanding of web standards and protocols, and familiarity with version control systems like Git are highly desirable in a JavaScript developer.


JavaScript Developer Education and Training Requirements

JavaScript Developers typically have a bachelor’s degree in computer science, software engineering or a related field.

This program teaches them fundamental principles of computing, data structures, and programming languages.

Knowledge of JavaScript is obviously essential, but they also need a good grasp of other web technologies like HTML, CSS, and AJAX.

Proficiency in these areas is often gained through hands-on experience, either from personal projects or internships.

Some positions may require a JavaScript Developer to have a master’s degree in a specific IT or software engineering discipline, particularly for roles that demand a high level of expertise or specialization.

While not always required, certification in JavaScript or related technologies such as Node.js or AngularJS can be beneficial.

These demonstrate a JavaScript Developer’s skills and commitment to keeping up with industry standards and evolving technologies.

Additionally, given the collaborative nature of the role, JavaScript Developers are often expected to have good problem-solving skills and experience with version control systems like Git.

They should also be familiar with development methodologies such as Agile or Scrum.


JavaScript Developer Salary Expectations

A JavaScript Developer earns an average of $85,200 (USD) per year.

The actual salary may vary depending on factors such as experience, certification, geographic location, and the size of the hiring organization.


JavaScript Developer Job Description FAQs

What skills does a JavaScript developer need?

A JavaScript Developer should have a strong understanding of JavaScript, its quirks, and workarounds.

They should also have experience with popular JavaScript libraries and frameworks like React, Angular, or Vue.js.

Knowledge of HTML, CSS, and web markup, including HTML5 and CSS3 is crucial.

They should possess good understanding of asynchronous request handling, partial page updates, and AJAX.

Problem-solving skills, ability to collaborate with a team, and good communication skills are also important.


Do JavaScript developers need a degree?

Most employers prefer a JavaScript developer to have a degree in computer science, information systems, or a related field.

However, this is not mandatory as several developers are self-taught or have taken coding bootcamps.

Employers value practical experience and a strong portfolio of work often more than formal education.


What should you look for in a JavaScript developer’s resume?

Look for a solid foundation in JavaScript, including knowledge of advanced concepts like closures, prototypical inheritance, and promises.

Experience with front-end technologies like HTML5 and CSS3, and JavaScript frameworks like React or Angular is a big plus.

Additionally, experience with testing and debugging, knowledge of performance testing frameworks, and familiarity with version control systems such as Git are desirable.


What qualities make a good JavaScript developer?

A good JavaScript developer is constantly learning and staying up-to-date with the latest trends and technologies in web development.

They have strong problem-solving skills and the ability to think algorithmically.

Good communication skills are also crucial as they often need to work in teams and explain complex technical concepts to non-technical team members.

They should also be detail-oriented and have a strong focus on delivering a high-quality user experience.


Is it difficult to hire JavaScript developers?

The demand for JavaScript developers is high, and the pool of qualified candidates is not enough to meet it.

Therefore, hiring JavaScript developers can be challenging.

Offering competitive salaries, opportunities for professional development, and an engaging work environment can help attract top talent.



And there you have it.

We’ve given you an inside look at what being a JavaScript developer truly involves.

Surprise, surprise!

It’s not just about scripting.

It’s about sculpting the digital landscape with each stroke of your code.

With our comprehensive JavaScript developer job description template and real-life instances, you’re well on your way.

But why put a full stop there?

Plunge further with our job description generator. It’s your stepping stone to meticulously crafted listings or honing your resume to stand out.


Every script you write contributes to the bigger canvas.

Let’s code that future. Together.

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