Period
to 22 July 2018

The median annual salary for a JavaScript Developer was £47,500 in advertised job vacancies in Hertfordshire during the 6 months to 22 July 2018.

The first table below provides salary benchmarking and summary statistics including a comparison to same period in the previous 2 years.

JavaScript Developer
East of England > Hertfordshire
6 months to
22 Jul 2018
Same period 2017 Same period 2016
Rank 141 91 130
Rank change year-on-year -50 +39 +37
Permanent jobs requiring a JavaScript Developer 81 145 91
As % of all permanent IT jobs advertised in Hertfordshire 1.80% 3.35% 1.90%
As % of the Job Titles category 1.85% 3.46% 1.98%
Number of salaries quoted 77 135 90
Hertfordshire median annual salary £47,500 £50,000 £55,000
Median salary % change year-on-year -5.00% -9.09% +22.22%
10th Percentile £37,500 £36,250 £38,750
90th Percentile £67,500 £67,500 £68,750
East of England median annual salary £45,000 £45,000 £42,500
% change year-on-year - +5.88% +6.25%

The following table is for comparison with the above and includes summary statistics for all permanent IT job vacancies advertised in Hertfordshire. Most job vacancies include a discernible job title that can be normalized. As such, the figures in the second row provide an indication of the number of permanent jobs in our overall sample.

All Permanent IT Job Vacancies
Hertfordshire
Permanent vacancies in Hertfordshire with a recognized job title 4,388 4,194 4,604
% of permanent IT jobs with a recognized job title 97.45% 97.02% 96.08%
Number of salaries quoted 3,548 3,567 3,817
Hertfordshire median annual salary £49,500 £45,000 £45,000
Median salary % change year-on-year +10.00% - -
10th Percentile £26,250 £25,500 £25,750
90th Percentile £72,500 £71,250 £70,000
East of England median annual salary £46,056 £45,000 £44,500
% change year-on-year +2.35% +1.12% +4.71%

JavaScript Developer
Job Vacancy Trend in Hertfordshire

Job postings that featured JavaScript Developer in the job title as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for JavaScript Developer in Hertfordshire

JavaScript Developer
Salary Trend in Hertfordshire

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing JavaScript Developer in Hertfordshire.

Salary trend for JavaScript Developer in Hertfordshire

JavaScript Developer
Salary Histogram in Hertfordshire

The salary distribution of IT jobs citing JavaScript Developer in Hertfordshire over the 6 months to 22 July 2018.

Salary histogram for JavaScript Developer in Hertfordshire

JavaScript Developer
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing JavaScript Developer within the Hertfordshire region over the 6 months to 22 July 2018. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Harpenden +21 19 £45,000 +20.00%
Watford -24 13 £60,000 +20.00% 1
Hatfield -14 9 £47,500 -13.64%
St Albans -25 5 £57,500 +9.52% 1
Berkhamsted +7 4 £50,000 +53.85% 1
Potters Bar -8 3 £65,000 +30.00%
Hemel Hempstead +13 2 £28,500 -40.00%
Hitchin +6 1 £33,500 -16.25%
Rickmansworth -10 1 £50,000 +25.00%
Welwyn Garden City -41 1 £50,000 -33.33%
JavaScript Developer
East of England

JavaScript Developer Skill Set
Top 30 Co-occurring IT Skills in Hertfordshire

For the 6 months to 22 July 2018, JavaScript Developer job roles required the following IT skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the Hertfordshire region featuring JavaScript Developer in the job title.

1 81 (100.00%) JavaScript
2 59 (72.84%) AngularJS
3 58 (71.60%) React
4 50 (61.73%) HTML
5 48 (59.26%) Agile Software Development
6 42 (51.85%) HTML5
7 40 (49.38%) CSS
8 39 (48.15%) Git (software)
9 34 (41.98%) Front End Development
10 30 (37.04%) jQuery
11 29 (35.80%) TDD
11 29 (35.80%) ES6
11 29 (35.80%) gulp
11 29 (35.80%) Karma Test Runner
12 28 (34.57%) React Native
13 26 (32.10%) Software Engineering
14 25 (30.86%) .NET
14 25 (30.86%) C#
14 25 (30.86%) SDLC
15 24 (29.63%) Sass
15 24 (29.63%) Java
15 24 (29.63%) SQL
16 23 (28.40%) Mobile App
17 21 (25.93%) Finance
17 21 (25.93%) Redux
17 21 (25.93%) Semantic HTML
18 20 (24.69%) Node.js
18 20 (24.69%) Jasmine
18 20 (24.69%) Vue.js
18 20 (24.69%) RESTful

JavaScript Developer Skill Set
Co-occurring IT Skills in Hertfordshire by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Applications
1 1 (1.23%) Photoshop
Cloud Services
1 19 (23.46%) npm
2 11 (13.58%) SaaS
3 6 (7.41%) Amazon AWS
4 4 (4.94%) Amazon EC2
4 4 (4.94%) AWS Lambda
4 4 (4.94%) Serverless
5 1 (1.23%) Microsoft Azure
Communications & Networking
1 19 (23.46%) HTTP
2 3 (3.70%) Internet
Database & Business Intelligence
1 5 (6.17%) PostgreSQL
1 5 (6.17%) SQL Server
2 4 (4.94%) Amazon DynamoDB
2 4 (4.94%) MongoDB
3 2 (2.47%) MySQL
3 2 (2.47%) RDBMS
3 2 (2.47%) Relational Database
3 2 (2.47%) SQL Server Integration Services
Development Applications
1 39 (48.15%) Git (software)
2 29 (35.80%) gulp
2 29 (35.80%) Karma Test Runner
3 20 (24.69%) Jasmine
4 19 (23.46%) webpack
5 9 (11.11%) JBehave
5 9 (11.11%) Jenkins
5 9 (11.11%) WebDriver
6 7 (8.64%) Gradle
6 7 (8.64%) Maven
7 1 (1.23%) JIRA
7 1 (1.23%) Mercurial
7 1 (1.23%) Xcode
General
1 21 (25.93%) Finance
2 7 (8.64%) Retail
3 4 (4.94%) Back Office
4 1 (1.23%) Games
4 1 (1.23%) Marketing
Libraries, Frameworks & Software Standards
1 59 (72.84%) AngularJS
2 58 (71.60%) React
3 50 (61.73%) HTML
4 42 (51.85%) HTML5
5 40 (49.38%) CSS
6 30 (37.04%) jQuery
7 28 (34.57%) React Native
8 25 (30.86%) .NET
9 24 (29.63%) Sass
10 21 (25.93%) Redux
10 21 (25.93%) Semantic HTML
11 20 (24.69%) Node.js
11 20 (24.69%) RESTful
11 20 (24.69%) Vue.js
12 19 (23.46%) .NET Framework
12 19 (23.46%) ASP.NET
13 18 (22.22%) Ember.js
13 18 (22.22%) Handlebars
13 18 (22.22%) Meteor
14 11 (13.58%) Twitter Bootstrap
Miscellaneous
1 23 (28.40%) Mobile App
2 19 (23.46%) Media Streaming
3 8 (9.88%) User Experience
4 4 (4.94%) Social Media
5 2 (2.47%) Robotics
6 1 (1.23%) Fintech
6 1 (1.23%) W3C
Processes & Methodologies
1 48 (59.26%) Agile Software Development
2 34 (41.98%) Front End Development
3 29 (35.80%) TDD
4 26 (32.10%) Software Engineering
5 25 (30.86%) SDLC
6 19 (23.46%) Due Diligence
6 19 (23.46%) Validation
7 18 (22.22%) Performance Management
7 18 (22.22%) Web Development
8 17 (20.99%) MVC
9 12 (14.81%) OO
10 11 (13.58%) Scrum
11 10 (12.35%) Test Automation
12 9 (11.11%) OOP
13 8 (9.88%) Continuous Delivery
13 8 (9.88%) Problem-Solving
14 7 (8.64%) Multithreading
15 6 (7.41%) E-Commerce
16 4 (4.94%) Microservices
16 4 (4.94%) Pair Programming
Programming Languages
1 81 (100.00%) JavaScript
2 29 (35.80%) ES6
3 25 (30.86%) C#
4 24 (29.63%) Java
4 24 (29.63%) SQL
5 19 (23.46%) TypeScript
6 7 (8.64%) Scala
7 1 (1.23%) C
7 1 (1.23%) C++
7 1 (1.23%) Fortran
7 1 (1.23%) Pascal
7 1 (1.23%) PHP
Quality Assurance & Compliance
1 9 (11.11%) QA
System Software
1 7 (8.64%) Docker
Vendors
1 3 (3.70%) Logi
1 3 (3.70%) Logi Analytics
1 3 (3.70%) Microsoft
2 1 (1.23%) hybris