March 1st, 2019

The Portrait of a JavaScript Developer [Infographics]

The third research in the series examining the profile of the JavaScript engineers, focusing on their salary, experience, and technology stack.
As businesses evolve, we've come to the point when even a small grocery store has its own website to represent its product line and establish customers' trust—and rightfully so. Each site is a storefront that effectively replaces the marketing campaign and forms the ventures' image, so you can't overemphasize the importance of making your page attractive and informative at the same time.
When it comes to creating a website, you can barely name a more fitting way other than using JavaScript. On top of CSS and HTML, it is now one of the most common technologies for the World Wide Web and is widely used by all major web browsers. Making the websites interactive is the main duty of JS and surely there are some people behind it, named developers.

JS software engineers make our lives easier, but what about their own lives? Well, let's see what they hide under the programming makeup.


Surely, there's some joy associated with the JS usage, but the salary is arguably what makes them push the products forward. No surprise that it's fairly high, and the US-based pros earn from $70K/€61K (Oklahoma) to $140K/€123K (Connecticut) a year, depending on the state.
JavaScript developers salary by company size
Experience is another factor that creates the gap: junior devs with less than 1 year of experience earn $60K/€53K when veterans with 20+ years earn more than
$110K/€97K a year when working in the US. European countries are the closest rivals in this department: Switzerland is a close competitor ($84K/€79K), followed by Norway ($72K/€63K), France ($56K/€49K), Denmark ($54K/€47K), the UK, and Israel ($60K/€53K for both). The Netherlands, Sweden, and Finland are within the range at $52-42K/€46-37K, meanwhile, Ukrainian pros earn up to $27K/€24K a year on average.
JavaScript developer salary by country
Companies' size is another thing to consider; there's a strong dependence on whether the venture is big or not: the larger ones tend to pay more. For example, the US-based companies with 1-9 employees pay $72K/€63K to their JS devs; meanwhile, 50k+ worker moguls offer up to $88K/€77K a year for the same type of job.
hire JavaScript developers in the US

Age & Gender

According to the Stack Overflow study, JS is truly an international language thanks to being the most popular pick for full stack, back-end, and front-end developers and even they can't measure its audience magnitude.

JS devs are no outlanders to the overall trends and continue the tendency of the whole group being represented by an almost 30-year-old person who is about to have a family with a single kid. It's not what we're used to seeing in movies like Skyfall with a young IT-pro, but the group is still younger compared to a regular employee's age. Such trends as gender equality have also affected this area, as evidenced in the USA and European countries where now up to 23% of JS devs are female, while in Asia, it's also pretty high with a 13% mark.

Job Satisfaction

It's universally high for all the types of developers as there's no area where this profession couldn't cover all the basic human needs. With a previously mentioned salary that is well above the national average, the job satisfaction level also depends on how stressful the job atmosphere is. Luckily, JS pros are very in demand and make up for the second largest group when it comes to being a "hot commodity" on the market: only Java devs have more monthly jobs advertised in the US (11,611 vs. 8,593) that allow for the meticulous choice with a cozy office and nice working conditions. It also relieves a good portion of the stress associated with unemployment periods since they know it won't be hard to find a new job.

Another factor is the price of rent that usually cuts into a good chunk of a devs' income. Funnily enough, San Francisco and New York aren't the dream locations: none of these places will let them earn more than $100K (€88K) a year regardless of their skills, the rental expenses of $38-40K (€33-35K) a year will somewhat decrease the happiness level. Rentals in cities like Dallas, Seattle, and Chicago will only cost $15-20K (€13-17.5K) a year, let alone European capitals that ask for $10-20K (€9-17.5K), but Kiev is a clear winner here with only $3.5K (€3K) needed to live in comfort.

The satisfaction level is typically lower among junior developers (83%) and is almost flawless for seniors (more than 97%). Engineers from countries with a relatively low average income level tend to be more satisfied than from a highly-developed countries — 85% against 79% respectfully.

Technology Stack

Well, there's a good chance you have already guessed that ".js" is the best indicator for a good JavaScript framework, and you're right. Among the JS devs, React, Angular, and Vue are the common top picks worldwide thanks to their overall convenience and long-lasting support from the community. Aurelia, Ember, and Polymer frameworks are also in use and can be utilized depending on the circumstances.

Speaking of the skills that have the biggest impact on salary, we should mention overall CSS and HTML knowledge, CSS reprocessing, Version Control/Git, jQuery, and debugging skills. The ultimate goal is to write a testable, cross-browser, well-running code, so there's surely no limit for the skills arsenal when you need a good JS developer.
JavaScrip developer portrait


Although JS is a fairly old technology filled with the experienced pros, it has seen an influx of the young blood thanks to not being a hard-to-learn language and a huge demand on the market, which made it up for an even spread across the groups based on age. Just take note that the JS devs are the hardest-to-hire group in the US, UK, Germany, Japan, and China.

The 3-4 years group is well above 62% of all the devs on the market, with the 5-7 years group being the second largest one with a 23% mark. Only 13% of them are in a 10-19 years range, while 20+ oldies are almost nonexistent due to the language being present for just about 23 years.

Medical Condition

Unlike the other developer groups, JS enthusiasts are a much healthier one outside of the US. Whether it's the young age or a passion towards using a bicycle (more than 16% of them use it to reach the workplace), only 22% of European devs tend to use their medical benefits.

Even if the company covers these expenses, only a small percentage (11%) is willing to use it for dental or vision matters; meanwhile, the vast majority prefers to dedicate their full force towards creating interactive websites. In the US, 48% of JS devs are most likely to need some of the medical benefits, yet this is still much lower than their Ruby counterparts (78%).

So, the Verdict s…

At the end of the day, a JS dev is a person in their late twenties, most likely male (77% males/23% females ratio) with a good salary ($71K/€62K on average) whose sizeable part goes to paying rent.

A JS enthusiast loves the job and can afford to choose between a few options thanks to the high demand for JavaScript skills, especially if he or she has a good understanding of CSS and HTML as well as a decent level of English. This person is also fairly proactive and supports a healthy lifestyle by using a bike on a regular basis, which helps in the prevention of needing to use medical insurance benefits. Having a cat is also no stranger to this group: almost 23% of them have this pet, but watching a TV-series (36%) and going on hikes (28%) are the two clear winners here.

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