Period
to 16 December 2017

The median annual salary for a JavaScript Developer was £47,500 in advertised job vacancies in Hertfordshire during the 6 months to 16 December 2017.

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
16 Dec 2017
Same period 2016 Same period 2015
Rank 141 122 169
Rank change year-on-year -19 +47 +16
Permanent jobs requiring a JavaScript Developer 80 100 67
As % of all permanent IT jobs advertised in Hertfordshire 1.81% 2.23% 1.28%
As % of the Job Titles category 1.88% 2.29% 1.32%
Number of salaries quoted 74 95 67
Hertfordshire median annual salary £47,500 £55,000 £45,000
Median salary % change year-on-year -13.64% +22.22% +12.50%
10th Percentile £32,500 £34,000 £28,550
90th Percentile £65,875 £63,750 £61,250
East of England median annual salary £45,000 £47,500 £40,000
% change year-on-year -5.26% +18.75% -

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 4260 4364 5075
% of permanent IT jobs with a recognized job title 96.58% 97.35% 96.70%
Number of salaries quoted 3614 3653 4196
Hertfordshire median annual salary £47,500 £47,500 £45,000
Median salary % change year-on-year - +5.56% -
10th Percentile £25,750 £25,500 £25,750
90th Percentile £70,000 £71,250 £70,000
East of England median annual salary £45,000 £45,000 £44,000
% change year-on-year - +2.27% +3.53%

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 16 December 2017.

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 16 December 2017. 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
Watford -16 29 £47,500 -13.64% 1
Hatfield +8 8 £55,000 +22.22%
St Albans +4 8 £51,250 -18.00%
Hitchin - 7 £35,000 -
Harpenden +20 5 £45,000 -10.00%
Kings Langley - 5 £47,500 -
Hemel Hempstead -7 4 £42,500 -10.53%
Rickmansworth - 3 £40,000 -
Welwyn Garden City - 2 £75,000 -
Stevenage -7 1 £50,000 -9.09%
JavaScript Developer
East of England

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

For the 6 months to 16 December 2017, JavaScript Developer job roles required the following IT skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Hertfordshire region featuring JavaScript Developer in the job title.

1 80 (100.00%) JavaScript
2 55 (68.75%) HTML
3 52 (65.00%) CSS
4 47 (58.75%) AngularJS
5 40 (50.00%) Agile Software Development
6 32 (40.00%) jQuery
7 28 (35.00%) Node.js
8 25 (31.25%) HTML5
8 25 (31.25%) Java
9 24 (30.00%) React
10 23 (28.75%) .NET
10 23 (28.75%) Scrum
11 22 (27.50%) OO
12 20 (25.00%) C#
12 20 (25.00%) MVC
13 19 (23.75%) Front End Development
14 17 (21.25%) TDD
15 16 (20.00%) ES6
15 16 (20.00%) Web Development
16 15 (18.75%) Software Engineering
16 15 (18.75%) Git (software)
16 15 (18.75%) SQL Server
16 15 (18.75%) gulp
17 14 (17.50%) HTTP
17 14 (17.50%) Ajax
18 13 (16.25%) Karma Test Runner
19 12 (15.00%) TypeScript
19 12 (15.00%) E-Commerce
20 11 (13.75%) Web Services
20 11 (13.75%) Twitter Bootstrap

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:

Application Platforms
1 4 (5.00%) Tomcat
2 2 (2.50%) Elasticsearch
2 2 (2.50%) JBoss
2 2 (2.50%) WebLogic
2 2 (2.50%) WebSphere
3 1 (1.25%) Umbraco
Applications
1 2 (2.50%) Photoshop
2 1 (1.25%) Adobe Illustrator
Business Applications
1 1 (1.25%) WebTrends
Cloud Services
1 7 (8.75%) SaaS
2 6 (7.50%) Amazon AWS
2 6 (7.50%) npm
3 2 (2.50%) Amazon SQS
3 2 (2.50%) Microsoft Azure
3 2 (2.50%) TestFlight
4 1 (1.25%) Heroku
Communications & Networking
1 14 (17.50%) HTTP
2 5 (6.25%) Skype
3 2 (2.50%) Internet
Database & Business Intelligence
1 15 (18.75%) SQL Server
2 5 (6.25%) MongoDB
3 3 (3.75%) MySQL
3 3 (3.75%) PostgreSQL
4 2 (2.50%) SQL Server 2014
5 1 (1.25%) NoSQL
5 1 (1.25%) Redis
5 1 (1.25%) Spotfire
Development Applications
1 15 (18.75%) Git (software)
1 15 (18.75%) gulp
2 13 (16.25%) Karma Test Runner
3 9 (11.25%) Visual Studio
4 8 (10.00%) Team Foundation Server
5 7 (8.75%) JBehave
5 7 (8.75%) WebDriver
5 7 (8.75%) webpack
6 6 (7.50%) Maven
7 5 (6.25%) Eclipse
7 5 (6.25%) Jasmine
8 4 (5.00%) Jenkins
9 3 (3.75%) Bower
9 3 (3.75%) Grunt
10 2 (2.50%) EasyMock
10 2 (2.50%) Gradle
10 2 (2.50%) JUnit
10 2 (2.50%) Mockito
10 2 (2.50%) Octopus Deploy
10 2 (2.50%) SpecFlow
General
1 10 (12.50%) Finance
2 8 (10.00%) Retail
3 5 (6.25%) Games
3 5 (6.25%) Publishing
4 2 (2.50%) Legal
5 1 (1.25%) Marketing
Libraries, Frameworks & Software Standards
1 55 (68.75%) HTML
2 52 (65.00%) CSS
3 47 (58.75%) AngularJS
4 32 (40.00%) jQuery
5 28 (35.00%) Node.js
6 25 (31.25%) HTML5
7 24 (30.00%) React
8 23 (28.75%) .NET
9 14 (17.50%) Ajax
10 11 (13.75%) Twitter Bootstrap
10 11 (13.75%) Web Services
11 10 (12.50%) KnockoutJS
11 10 (12.50%) RESTful
12 9 (11.25%) CSS3
12 9 (11.25%) D3.js
12 9 (11.25%) React Native
13 8 (10.00%) ASP.NET Web API
13 8 (10.00%) Backbone.js
13 8 (10.00%) CodeMirror
13 8 (10.00%) Sass
Miscellaneous
1 9 (11.25%) User Experience
2 7 (8.75%) Fintech
2 7 (8.75%) Mobile App
3 6 (7.50%) Computer Science
4 5 (6.25%) Media Streaming
4 5 (6.25%) Online Games
4 5 (6.25%) Renewable Energy
5 3 (3.75%) Greenfield Project
6 2 (2.50%) Analytical Skills
6 2 (2.50%) Client/Server
7 1 (1.25%) Algorithms
7 1 (1.25%) Data Structures
7 1 (1.25%) Kindle
Operating Systems
1 2 (2.50%) Linux
Processes & Methodologies
1 40 (50.00%) Agile Software Development
2 23 (28.75%) Scrum
3 22 (27.50%) OO
4 20 (25.00%) MVC
5 19 (23.75%) Front End Development
6 17 (21.25%) TDD
7 16 (20.00%) Web Development
8 15 (18.75%) Software Engineering
9 12 (15.00%) E-Commerce
10 10 (12.50%) OOD
11 9 (11.25%) Information Architecture
12 8 (10.00%) Web Application Development
13 7 (8.75%) Test Automation
14 5 (6.25%) Code Coverage
14 5 (6.25%) Dependency Injection
14 5 (6.25%) Open Source
14 5 (6.25%) Remote Sensing
14 5 (6.25%) Validation
15 4 (5.00%) Mentoring
15 4 (5.00%) Microservices
Programming Languages
1 80 (100.00%) JavaScript
2 25 (31.25%) Java
3 20 (25.00%) C#
4 16 (20.00%) ES6
5 12 (15.00%) TypeScript
6 9 (11.25%) SQL
7 6 (7.50%) T-SQL
8 3 (3.75%) PHP
8 3 (3.75%) PowerShell
9 2 (2.50%) Scala
9 2 (2.50%) Shell Script
10 1 (1.25%) PL/SQL
10 1 (1.25%) Ruby
Qualifications
1 8 (10.00%) Computer Science Degree
1 8 (10.00%) Degree
2 1 (1.25%) HND
Quality Assurance & Compliance
1 5 (6.25%) QA
System Software
1 2 (2.50%) Docker
Systems Management
1 2 (2.50%) Opscode Chef
Vendors
1 5 (6.25%) Google
2 3 (3.75%) Demandware
3 1 (1.25%) Adobe
3 1 (1.25%) Oracle
3 1 (1.25%) Tableau
3 1 (1.25%) TIBCO