Period
to 22 April 2018

The median annual salary for a JavaScript Developer was £47,500 in advertised job vacancies in Hertfordshire during the 6 months to 22 April 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 Apr 2018
Same period 2017 Same period 2016
Rank 113 94 160
Rank change year-on-year -19 +66 -25
Permanent jobs requiring a JavaScript Developer 114 127 69
As % of all permanent IT jobs advertised in Hertfordshire 2.31% 2.88% 1.38%
As % of the Job Titles category 2.37% 2.96% 1.43%
Number of salaries quoted 109 115 72
Hertfordshire median annual salary £47,500 £45,000 £47,500
Median salary % change year-on-year +5.56% -5.26% +5.56%
10th Percentile £32,500 £35,000 £29,250
90th Percentile £67,500 £67,500 £87,500
East of England median annual salary £47,500 £45,000 £40,000
% change year-on-year +5.56% +12.50% +5.96%

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 4,810 4,291 4,834
% of permanent IT jobs with a recognized job title 97.33% 97.15% 96.66%
Number of salaries quoted 4,023 3,625 4,011
Hertfordshire median annual salary £50,000 £45,000 £45,000
Median salary % change year-on-year +11.11% - -
10th Percentile £26,250 £25,000 £26,250
90th Percentile £71,250 £70,000 £70,000
East of England median annual salary £47,500 £45,000 £44,000
% change year-on-year +5.56% +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 22 April 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 April 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 +30 28 £45,000 +20.00%
Watford -4 28 £60,000 +29.73% 2
Hatfield -15 12 £47,500 -26.92%
Hitchin +3 5 £35,000 -12.50% 2
St Albans -14 5 £55,000 -8.33% 1
Berkhamsted +6 4 £50,000 +53.85%
Hemel Hempstead -11 3 £44,250 +18.00% 2
Potters Bar -2 2 £65,000 +30.00%
Letchworth +13 1 £30,000 -29.41%
Rickmansworth -14 1 - -
JavaScript Developer
East of England

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

For the 6 months to 22 April 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.

1 114 (100.00%) JavaScript
2 81 (71.05%) AngularJS
3 77 (67.54%) Agile Software Development
4 75 (65.79%) React
5 73 (64.04%) HTML
6 57 (50.00%) HTML5
7 54 (47.37%) CSS
7 54 (47.37%) jQuery
8 53 (46.49%) Git (software)
9 46 (40.35%) Karma Test Runner
9 46 (40.35%) gulp
9 46 (40.35%) ES6
10 45 (39.47%) React Native
11 40 (35.09%) TDD
11 40 (35.09%) Java
12 39 (34.21%) Front End Development
13 37 (32.46%) Software Engineering
14 32 (28.07%) TypeScript
14 32 (28.07%) Mobile App
14 32 (28.07%) Sass
14 32 (28.07%) RESTful
14 32 (28.07%) Node.js
15 30 (26.32%) Redux
15 30 (26.32%) Finance
16 29 (25.44%) Semantic HTML
17 28 (24.56%) Jasmine
17 28 (24.56%) npm
17 28 (24.56%) Due Diligence
17 28 (24.56%) webpack
17 28 (24.56%) MVC

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 (0.88%) Photoshop
Business Applications
1 1 (0.88%) WebTrends
Cloud Services
1 28 (24.56%) npm
2 21 (18.42%) SaaS
3 4 (3.51%) Amazon AWS
4 3 (2.63%) Amazon EC2
4 3 (2.63%) AWS Lambda
4 3 (2.63%) Serverless
5 1 (0.88%) Heroku
Communications & Networking
1 28 (24.56%) HTTP
2 4 (3.51%) Skype
3 2 (1.75%) Internet
Database & Business Intelligence
1 10 (8.77%) SQL Server
2 9 (7.89%) MongoDB
3 5 (4.39%) PostgreSQL
4 3 (2.63%) Amazon DynamoDB
5 2 (1.75%) SQL Server Integration Services
6 1 (0.88%) MySQL
6 1 (0.88%) RDBMS
6 1 (0.88%) Relational Database
6 1 (0.88%) Spotfire
6 1 (0.88%) Sybase ASE
Development Applications
1 53 (46.49%) Git (software)
2 46 (40.35%) gulp
2 46 (40.35%) Karma Test Runner
3 28 (24.56%) Jasmine
3 28 (24.56%) webpack
4 17 (14.91%) JBehave
4 17 (14.91%) WebDriver
5 13 (11.40%) Jenkins
6 12 (10.53%) Maven
7 10 (8.77%) Gradle
8 5 (4.39%) Team Foundation Server
9 4 (3.51%) Visual Studio
10 3 (2.63%) jMock
11 2 (1.75%) Bitbucket
12 1 (0.88%) JMeter
12 1 (0.88%) JUnit
12 1 (0.88%) Selenium
General
1 30 (26.32%) Finance
2 8 (7.02%) Retail
3 5 (4.39%) Games
4 4 (3.51%) Back Office
4 4 (3.51%) Publishing
5 1 (0.88%) Marketing
Libraries, Frameworks & Software Standards
1 81 (71.05%) AngularJS
2 75 (65.79%) React
3 73 (64.04%) HTML
4 57 (50.00%) HTML5
5 54 (47.37%) CSS
5 54 (47.37%) jQuery
6 45 (39.47%) React Native
7 32 (28.07%) Node.js
7 32 (28.07%) RESTful
7 32 (28.07%) Sass
8 30 (26.32%) Redux
9 29 (25.44%) Semantic HTML
10 28 (24.56%) .NET
11 21 (18.42%) .NET Framework
11 21 (18.42%) Handlebars
12 20 (17.54%) Twitter Bootstrap
13 18 (15.79%) CodeMirror
13 18 (15.79%) D3.js
13 18 (15.79%) lodash
14 17 (14.91%) Vue (Vue.js)
Miscellaneous
1 32 (28.07%) Mobile App
2 28 (24.56%) Media Streaming
3 10 (8.77%) User Experience
4 4 (3.51%) Fintech
4 4 (3.51%) Online Games
4 4 (3.51%) Self-Motivation
4 4 (3.51%) Social Media
5 1 (0.88%) Client/Server
Operating Systems
1 1 (0.88%) Linux
1 1 (0.88%) Windows
Processes & Methodologies
1 77 (67.54%) Agile Software Development
2 40 (35.09%) TDD
3 39 (34.21%) Front End Development
4 37 (32.46%) Software Engineering
5 28 (24.56%) Due Diligence
5 28 (24.56%) MVC
5 28 (24.56%) Validation
6 27 (23.68%) SDLC
7 26 (22.81%) OO
7 26 (22.81%) Scrum
8 21 (18.42%) Web Development
9 18 (15.79%) Test Automation
10 17 (14.91%) Performance Management
11 16 (14.04%) OOP
12 11 (9.65%) Continuous Delivery
13 10 (8.77%) Mentoring
13 10 (8.77%) Multithreading
13 10 (8.77%) Problem-Solving
14 5 (4.39%) Open Source
14 5 (4.39%) Unit Testing
Programming Languages
1 114 (100.00%) JavaScript
2 46 (40.35%) ES6
3 40 (35.09%) Java
4 32 (28.07%) TypeScript
5 28 (24.56%) C#
6 27 (23.68%) SQL
7 10 (8.77%) Scala
8 5 (4.39%) T-SQL
9 2 (1.75%) Java 8
10 1 (0.88%) C
10 1 (0.88%) PHP
10 1 (0.88%) Python
10 1 (0.88%) Ruby
Qualifications
1 5 (4.39%) Degree
2 4 (3.51%) Computer Science Degree
Quality Assurance & Compliance
1 18 (15.79%) QA
System Software
1 10 (8.77%) Docker
Vendors
1 4 (3.51%) Google
2 3 (2.63%) Logi
2 3 (2.63%) Logi Analytics
2 3 (2.63%) Microsoft
3 1 (0.88%) Oracle
3 1 (0.88%) Sybase
3 1 (0.88%) Tableau
3 1 (0.88%) TIBCO