Period
to 19 January 2018

The median annual salary for a JavaScript Developer was £47,500 in advertised job vacancies in Hertfordshire during the 6 months to 19 January 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
19 Jan 2018
Same period 2017 Same period 2016
Rank 136 119 161
Rank change year-on-year -17 +42 -4
Permanent jobs requiring a JavaScript Developer 81 100 69
As % of all permanent IT jobs advertised in Hertfordshire 1.81% 2.28% 1.36%
As % of the Job Titles category 1.87% 2.34% 1.40%
Number of salaries quoted 75 95 71
Hertfordshire median annual salary £47,500 £55,000 £45,000
Median salary % change year-on-year -13.64% +22.22% +28.57%
10th Percentile £32,500 £35,500 £28,500
90th Percentile £66,250 £63,750 £61,250
East of England median annual salary £45,000 £47,500 £40,000
% change year-on-year -5.26% +18.75% +6.67%

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 4,335 4,279 4,922
% of permanent IT jobs with a recognized job title 96.78% 97.40% 97.02%
Number of salaries quoted 3,690 3,569 4,078
Hertfordshire median annual salary £47,500 £47,500 £45,000
Median salary % change year-on-year - +5.56% -
10th Percentile £25,500 £25,000 £26,250
90th Percentile £71,250 £71,250 £70,000
East of England median annual salary £46,500 £45,000 £44,500
% change year-on-year +3.33% +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 19 January 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 19 January 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
Watford -6 27 £53,750 -2.27% 1
Harpenden +25 16 £45,000 -10.00% 1
Hatfield +2 8 £47,500 +5.56%
St Albans +2 7 £50,000 -20.00% 2
Hitchin - 6 £35,000 -
Kings Langley - 5 £47,500 -
Hemel Hempstead -11 4 £42,500 -5.56% 7
Letchworth -2 1 £30,000 -25.00%
Rickmansworth - 1 - -
JavaScript Developer
East of England

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

For the 6 months to 19 January 2018, 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 81 (100.00%) JavaScript
2 59 (72.84%) HTML
3 52 (64.20%) CSS
4 51 (62.96%) AngularJS
5 48 (59.26%) Agile Software Development
6 38 (46.91%) jQuery
7 36 (44.44%) HTML5
7 36 (44.44%) React
8 31 (38.27%) Git (software)
9 27 (33.33%) Java
10 26 (32.10%) ES6
11 25 (30.86%) gulp
11 25 (30.86%) Karma Test Runner
11 25 (30.86%) TDD
12 24 (29.63%) React Native
13 23 (28.40%) Front End Development
13 23 (28.40%) MVC
14 22 (27.16%) Node.js
15 21 (25.93%) TypeScript
15 21 (25.93%) RESTful
16 20 (24.69%) Scrum
16 20 (24.69%) HTTP
17 19 (23.46%) C#
17 19 (23.46%) .NET
17 19 (23.46%) OO
18 18 (22.22%) Software Engineering
19 17 (20.99%) Finance
19 17 (20.99%) Sass
20 16 (19.75%) Semantic HTML
20 16 (19.75%) Jasmine

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 2 (2.47%) Elasticsearch
Applications
1 1 (1.23%) Photoshop
Business Applications
1 1 (1.23%) WebTrends
Cloud Services
1 16 (19.75%) npm
2 11 (13.58%) SaaS
3 5 (6.17%) Amazon AWS
4 2 (2.47%) Amazon SQS
4 2 (2.47%) Microsoft Azure
5 1 (1.23%) Heroku
Communications & Networking
1 20 (24.69%) HTTP
2 5 (6.17%) Skype
Database & Business Intelligence
1 13 (16.05%) SQL Server
2 6 (7.41%) MongoDB
3 2 (2.47%) MySQL
4 1 (1.23%) PostgreSQL
4 1 (1.23%) Spotfire
4 1 (1.23%) Sybase ASE
Development Applications
1 31 (38.27%) Git (software)
2 25 (30.86%) gulp
2 25 (30.86%) Karma Test Runner
3 16 (19.75%) Jasmine
3 16 (19.75%) webpack
4 9 (11.11%) Visual Studio
5 8 (9.88%) JBehave
5 8 (9.88%) Team Foundation Server
5 8 (9.88%) WebDriver
6 7 (8.64%) Maven
7 6 (7.41%) Jenkins
8 5 (6.17%) Gradle
9 3 (3.70%) jMock
10 2 (2.47%) Bitbucket
10 2 (2.47%) Chocolatey
10 2 (2.47%) Octopus Deploy
10 2 (2.47%) SpecFlow
11 1 (1.23%) Eclipse
11 1 (1.23%) JMeter
11 1 (1.23%) Selenium
General
1 17 (20.99%) Finance
2 5 (6.17%) Games
2 5 (6.17%) Publishing
3 4 (4.94%) Retail
4 1 (1.23%) Marketing
Libraries, Frameworks & Software Standards
1 59 (72.84%) HTML
2 52 (64.20%) CSS
3 51 (62.96%) AngularJS
4 38 (46.91%) jQuery
5 36 (44.44%) HTML5
5 36 (44.44%) React
6 24 (29.63%) React Native
7 22 (27.16%) Node.js
8 21 (25.93%) RESTful
9 19 (23.46%) .NET
10 17 (20.99%) Sass
11 16 (19.75%) Redux
11 16 (19.75%) Semantic HTML
12 12 (14.81%) Twitter Bootstrap
13 10 (12.35%) D3.js
13 10 (12.35%) Handlebars
14 9 (11.11%) CodeMirror
14 9 (11.11%) KnockoutJS
14 9 (11.11%) lodash
14 9 (11.11%) Web Services
Miscellaneous
1 16 (19.75%) Media Streaming
1 16 (19.75%) Mobile App
2 7 (8.64%) Fintech
2 7 (8.64%) User Experience
3 5 (6.17%) Online Games
3 5 (6.17%) Renewable Energy
4 2 (2.47%) Computer Science
4 2 (2.47%) Greenfield Project
5 1 (1.23%) Client/Server
Operating Systems
1 1 (1.23%) Linux
1 1 (1.23%) Windows
Processes & Methodologies
1 48 (59.26%) Agile Software Development
2 25 (30.86%) TDD
3 23 (28.40%) Front End Development
3 23 (28.40%) MVC
4 20 (24.69%) Scrum
5 19 (23.46%) OO
6 18 (22.22%) Software Engineering
7 16 (19.75%) Validation
8 10 (12.35%) Web Development
9 8 (9.88%) Mentoring
9 8 (9.88%) Test Automation
10 7 (8.64%) Information Architecture
10 7 (8.64%) OOD
10 7 (8.64%) OOP
11 6 (7.41%) Web Application Development
12 5 (6.17%) Code Coverage
12 5 (6.17%) Continuous Delivery
12 5 (6.17%) Dependency Injection
12 5 (6.17%) Open Source
12 5 (6.17%) SDLC
Programming Languages
1 81 (100.00%) JavaScript
2 27 (33.33%) Java
3 26 (32.10%) ES6
4 21 (25.93%) TypeScript
5 19 (23.46%) C#
6 8 (9.88%) SQL
7 6 (7.41%) T-SQL
8 5 (6.17%) Scala
9 2 (2.47%) PowerShell
10 1 (1.23%) PHP
10 1 (1.23%) Python
10 1 (1.23%) Ruby
Qualifications
1 7 (8.64%) Degree
2 6 (7.41%) Computer Science Degree
Quality Assurance & Compliance
1 10 (12.35%) QA
System Software
1 5 (6.17%) Docker
Systems Management
1 2 (2.47%) Opscode Chef
Vendors
1 5 (6.17%) Google
2 1 (1.23%) Demandware
2 1 (1.23%) Oracle
2 1 (1.23%) Sybase
2 1 (1.23%) Tableau
2 1 (1.23%) TIBCO