Exactly What You Need to Know to Become a Front End Developer in 2022

By Scott Morris

What do front end developers have to know? Check out the 7 most in-demand job skills from real job listings!

Over the last 10 years at Skillcrush, we’re proud to have introduced coding to 300,000 career changers, graduated over 20,000 students, and placed 90% of graduates in our job placement program into fulfilling and higher earning roles in tech!

In our experience, front end development is a great way for career changers to break into tech, get hired, and get paid. A 2020 Stack Overflow survey found that front end software developers in the United States make an average of $110,000 per year while Zippia estimates that there are currently over 80,000 front end developers employed in the United States.

If you’re looking for a lucrative career in a growing industry, front end web development may be your dream job, even as an entry level web developer.

In this post, we walk you through what a front end developer is, what they do, how to become a front end developer, and the languages, frameworks, and tools you need to learn to become successful in front end development.

Before we start, we just want to say that although terms like front end developer, front end engineer, and front end web developer may seem like they mean different things, and there are small differences between them, they can actually be used interchangeably!

Table of Contents

  1. What is a front end developer?
  2. What do front end web developers do?
  3. The languages and tools you need to become a front end developer
  4. What frameworks and tools do front end developers use?
  5. How do I get started as an entry level front end developer?
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What is a front end developer?

Front end developers are engineers who implement web designs through coding languages like HTML, CSS, and JavaScript. This is the person on your team who writes the code for a website’s navigation and layouts — a site looks different on your phone because a front end web developer made it so (thanks to mobile-first or responsive design).

They also make sure that there are no errors or bugs on the website and that the design appears as it’s supposed to across different platforms and browsers. All of these tasks are important for a good user experience.

The code front end developers write runs inside the site visitor’s web browser (aka client-side) while a back end developer’s code runs server-side, using open source environments (like Node.js) or programming languages (like Python).

For example, if web development is like a car, the front end would be the car body, paint, and interior color (aka all of the visual aspects of the car) whereas the back end is the engine and the gearbox. The site visitor interacts directly with the front end (you can touch it and swap things out and change them without it changing the engine itself) while the back end makes everything run in the background. Now you know something about web development and cars — thank us later!

Full stack developers are comfortable programming with both front end and back end languages.

laptop, two blue servers, and a database on a blue background represent front end vs back end

Front end vs. Back end, image created by Seobility under CC BY-SA 4.0

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What do front end developers do?

Bring web designs to life and maintain the website’s user interface

When working with the front end, web design skills are important because front end engineers take web designers’ designs and bring them to life on the screen. They look at a web designer’s wireframes and designs (often called design comps) and then use HTML, CSS, and JavaScript to make functional and beautiful websites that people can actually interact with.

This means building out the navigation, layouts, and buttons that a web designer has carefully laid out and making sure that all of the design elements work properly while looking the way that they’re supposed to according to the designer’s UX/UI research.

Beyond that, front end web developers also make sure the website runs properly. Companies want customers to have great experiences on their sites, which means that they need people with front end web development skills to make sure that the user interface is always working properly by fixing any bugs or errors that visitors may encounter.

For example, imagine you upvote a comment on Reddit (a regular user interaction on the platform), and nothing happens – the non-response may mean there’s a bug with the upvote button, which means someone with front end development experience would try to fix it ASAP. (If you see a cat error though, that’s probably not their fault :)).

Implement mobile-first or responsive design

In the US alone, more people access the internet from mobile devices than from desktop computers, so it’s no wonder that responsive and mobile design skills are super important front end developer skills for employers!

Responsive design means that the site’s layout (and sometimes functionality and content) change based on the screen size and device someone uses.

When you visit a website from a desktop computer with a big monitor, you’ll see multiple columns, big graphics, and interaction created specifically for those using mouse and keyboard.

Ethan Marcotte, an independent web designer, speaker, and author of Responsive Web Design, who popularized responsive design, said:

“Rather than tailoring disconnected designs to each of an ever-increasing number of web devices, we can treat them as facets of the same experience. We can design for an optimal viewing experience, but embed standards-based technologies into our designs to make them not only more flexible, but more adaptive to the media that renders them. In short, we need to practice responsive web design.”

Before responsive design, people built separate pages for mobile devices. The same website would appear as a single column optimized for touch interaction, but using the same base files on mobile. Responsive web design changed that experience. Instead of using the same files, developers now create different designs for mobile.

Mobile design can include responsive design, but can also mean creating separate mobile-specific designs. Sometimes the experience you want a site visitor to have on a desktop computer is entirely different from what you want them to see when visiting from a smartphone.

In those cases, it makes sense for the mobile site to be completely different. A bank website with online banking would benefit from a separate mobile site that lets visitors view things like the closest bank location and a simplified account view (since mobile screens are smaller).

computer, tablet, and phone have content that shows in different sizes on different devices
This is an example of how web page elements can adapt different devices’ screen sizes, like a desktop computer display, tablet, and a smartphone.

Fix bugs and errors that pop up on the website

Imagine building your wonderful web experience and suddenly the computer glitches, and keeps glitching. Such was the scene in a Harvard classroom in the fall of 1947, when a literal moth was discovered in a computer’s hardware. A young programmer named Grace Hopper was among the crew of those who discovered the moth and is credited with having coined the term “bug” to mean “a glitch in the code.

As a front end developer, being familiar with testing and debugging processes is vital.

Unit testing is when you evaluate individual blocks of source code (aka, the instructions that tell a website how it should work). Each programming language has a different method and structure for testing these blocks of code.

Debugging is simply taking all of the “bugs” (errors) those tests uncover (or visitors uncover once your site is launched), putting on your detective hat to figure out why and how they’re happening, and fixing the problem. Think of it as being a human Raid.

Different companies use slightly different processes for debugging, but if you’ve used one, you can adapt to others pretty easily.

Since testing and bugging contribute in large part to a positive user experience, they’re critical skills for a front end web developer to know.

Problem Solve

Development is all about creative problem solving and getting your program to work — from figuring out how to best implement a design, to fixing bugs that crop up, to seamlessly connecting your front end code work with another software engineer’s back end code.

For example: you’ve created a perfectly-functioning website front end and you hand it over to the back end developers to integrate it with a content management system (CMS). All of a sudden, half your awesome features stop working — what would you do? No really, what would you do?!

A good front end web developer will view this as a puzzle to be solved rather than an absolute disaster. Of course, an excellent, senior-level front end developer will anticipate these problems and try to prevent them in the first place!

Sadie Jay, one of our Get Hired alumni, says, “How you approach solving problems is just as important as the code you write. It’s okay to be intimidated, just don’t let that stop you. Ask follow up questions, start with what you know, and document your process.”

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The languages and tools you need to become a front end developer

What languages do front end web developers use?


HTML (Hyper Text Markup Language) and CSS (Cascading Style Sheets) are the most basic building blocks of web coding. The 2021 Stack Overflow survey found that 56 percent of professional developers use HTML and CSS extensively in their work. Without these two skills, you can’t create a website design — all you’d have is unformatted plain text on the screen. In fact, you can’t even add images to a page without HTML!

HTML was actually only invented in the 1980s even though computers have been around for much longer. Tim Berners Lee developed his first hypertext system, “Enquire,” in 1980 for his own use. With a background in text processing, real-time software and communications, Tim started the WorldWideWeb project at CERN in 1989.


JavaScript lets you add a ton more functionality to your websites, and you can create a lot of basic web applications using nothing more than HTML, CSS, and JavaScript (JS for short).

At the most basic level, JS is used to create and control things like maps that update in real time, interactive films, and online games. Sites like YouTube use a lot of JavaScript to make their user interface easy to use (the fact that the page doesn’t reload whenever you Save to Playlist is thanks to JavaScript!).

Fun fact: JavaScript is the most popular language for professional developers — 69% of professional developers use it regularly in their work.


jQuery is a JavaScript library: a collection of plugins and extensions that makes developing with JavaScript faster and easier. It’s also used by 77.3 percent of all websites on the Internet!

Rather than having to code everything from scratch, jQuery is like shorthand for JavaScript, which allows you to use all the cool functions of JavaScript without having to write out all the JavaScript code for yourself). You can use jQuery for things like countdown timers, search form autocomplete, and even automatically-rearranging and resizing grid layouts.

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What frameworks and tools do front end engineers use?

A framework is a pre-built structure that is designed in accordance with programming best practices, and helps you start a coding project quickly without having to do all the setup yourself.

Think of building websites and web apps like building a house — when you set out to build a house, you could create all of your own building materials from scratch and start building without any schematics, but that approach would be incredibly time-consuming and doesn’t make a lot of sense.

It’s more likely that you would purchase pre-manufactured building materials (wood, bricks, countertops, etc.) and then assemble them based on a blueprint to fit your specific needs.

Coding is very similar. When you set out to code a website, you could code every aspect of that site from scratch, but there are certain common website features that make more sense to apply from a template — if you need a wheel, for instance, it’s a lot more sensible to buy one than it is to reinvent it. And that’s where frameworks come into play. You’ll never have to start from scratch again!

JavaScript Frameworks

JavaScript frameworks (including Angular, Backbone, Ember, Vue.js, and React) give a ready-made structure to your JavaScript code. So many companies use JavaScript frameworks to build their sites that many front end developer jobs require experience with frameworks.

There are different types of JavaScript frameworks for different needs, though the five mentioned are the most popular in actual job listings (especially React, which is why we’ve included it in our Break Into Tech program).

CSS Frameworks

CSS and front end frameworks (the most popular front end framework is Bootstrap) do for CSS what JS Frameworks do for JavaScript: they give you a jumping-off point for faster coding. Since so much CSS starts with exactly the same elements from project to project, a framework that defines all of these for you upfront is super valuable.

Experience with CSS Preprocessors

Preprocessors are another element that a front end developer can use to speed up CSS coding. A CSS preprocessor adds extra functionality to CSS to keep our CSS scalable and easier to work with. It processes your code before you publish it to your website, and turns it into well-formatted and cross-browser friendly CSS. Sass and LESS are the two most in-demand preprocessors.

Experience with RESTful Services and APIs

This has been a long journey into front end web development, and we wouldn’t be surprised if you’re looking for some rest!

Actually, though, we’re going to talk about a technical REST: REpresentational State Transfer. It’s a simple set of guidelines and practices that sets expectations so you know how to communicate with a web service, which is any type of service you can access through a website.

For example, when you go to weather.com and look at a widget that displays the temperature, it asks the web service (for example, NOAA) what the weather is at a specific location. The web service will reply with the information, communicate it with weather.com through the web, and weather.com displays the result.

When you call a RESTFUL API, you’re sending a request to a specific address to retrieve information. Let’s say you wanted to write an app that shows you all of your social media friends in the order in which you became friends. You could make calls to Facebook’s RESTful API to read your friends list and return that data. Your API call can be as simple as “https://www.facebook.com/friendslist?user=janedoe&timestamp=true” and it will return Jane Doe’s friend list and when you became friends.

As a front end web developer, you could call Twitter’s API as well (Twitter also uses RESTful APIs). The general process is the same for any service that uses RESTful APIs, only the data returned will be different.

RESTful APIs make a web service perform better, scale better, work more reliably, and be easier to modify or move.

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How do I get started as a front end developer?

If you’re pumped about working as a front end engineer but not sure where to learn front end development and get the web developer skills you need, you’re in the right place.

Skillcrush’s Break Into Tech program includes access to our Front End Developer Career Track, a program designed to teach you how to become a front end developer and give you all the web developer skills you need to start working as an entry-level front end developer within a year.

You’ll get a solid foundation en route to landing the front end developer job you’re after with skills like HTML and CSS, responsive web development, JavaScript, and React — everything we talked about here, conveniently, as online courses.

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Is Front End Development Right for You? Take Our 3-Minute Quiz!

You Will Learn: If a career in front end development is right for you What to know about making a career change into tech What skills you need to learn to become a developer

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Scott Morris

Scott Morris is Skillcrush's staff writer and content producer. Like all the members of Skillcrush's team, he works remotely (in his case from Napa, CA). He believes that content that's worth reading (and that your audience can find!) creates brands that people follow. He's experienced writing on topics including jobs and technology, digital marketing, career pivots, gender equity, parenting, and popular culture. Before starting his career as a writer and content marketer, he spent 10 years as a full-time parent to his daughters Veronica and Athena.