Period
to 6 June 2020

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for JavaScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JavaScript over the 6 months to 6 June 2020 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

JavaScript (including ECMAScript)
East of England > Hertfordshire
6 months to
6 Jun 2020
Same period 2019 Same period 2018
Rank 8 13 17
Rank change year-on-year +5 +4 -8
Contract jobs citing JavaScript 78 124 108
As % of all contract jobs advertised in Hertfordshire 10.20% 9.12% 7.38%
As % of the Programming Languages category 31.58% 27.74% 21.82%
Number of daily rates quoted 41 55 74
Median daily rate £400 £425 £385
Median daily rate % change year-on-year -5.88% +10.39% -9.41%
10th Percentile £300 £316 £207
90th Percentile £525 £525 £509
East of England median daily rate £400 £425 £425
% change year-on-year -5.88% - +13.33%
Number of hourly rates quoted 0 2 1
Median hourly rate - £17.63 £12.50
Median hourly rate % change year-on-year - +41.00% -
East of England median hourly rate - £39.50 £35.50
% change year-on-year - +11.27% -4.05%

JavaScript is in the Programming Languages category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for coding skills.

All Programming Languages
Hertfordshire
Contract vacancies with a requirement for coding skills 247 447 495
As % of all contract IT jobs advertised in Hertfordshire 32.29% 32.87% 33.83%
Number of daily rates quoted 126 213 285
Median daily rate £425 £450 £400
Median daily rate % change year-on-year -5.56% +12.50% -3.32%
10th Percentile £258 £320 £260
90th Percentile £556 £567 £573
East of England median daily rate £450 £445 £425
% change year-on-year +1.12% +4.71% +6.25%
Number of hourly rates quoted 4 16 17
Median hourly rate £47.00 £43.75 £27.50
Median hourly rate % change year-on-year +7.43% +59.09% -38.89%
10th Percentile £33.50 £21.50 £13.00
90th Percentile £54.88 £56.88 £56.25
Median hourly rate £24.70 £45.25 £40.00
% change year-on-year -45.41% +13.13% -2.74%

JavaScript
Job Vacancy Trend in Hertfordshire

Job postings citing JavaScript as a proportion of all IT jobs advertised in Hertfordshire.

Job vacancy trend for JavaScript in Hertfordshire

JavaScript
Contractor Daily Rate Trend in Hertfordshire

3-month moving average daily rate quoted in jobs citing JavaScript in Hertfordshire.

Daily rate trend for JavaScript in Hertfordshire

JavaScript
Daily Rate Histogram in Hertfordshire

Daily rate distribution for jobs citing JavaScript in Hertfordshire over the 6 months to 6 June 2020.

Daily rate histogram for JavaScript in Hertfordshire

JavaScript
Contractor Hourly Rate Trend in Hertfordshire

3-month moving average hourly rates quoted in jobs citing JavaScript in Hertfordshire.

Hourly rate trend for JavaScript in Hertfordshire

JavaScript
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JavaScript within the Hertfordshire region over the 6 months to 6 June 2020. 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford -1 24 £400 -5.88% 3
Stevenage +4 16 - -
Borehamwood +2 8 £375 +7.14% 1
Hemel Hempstead +4 7 £469 - 3
Letchworth +3 6 £375 -
Welwyn Garden City +6 4 £350 -12.50% 1
Hatfield +1 3 £450 - 1
Rickmansworth -4 2 £225 -67.86%
St Albans - 2 - - 1
Welwyn -3 1 - -
JavaScript
East of England

For the 6 months to 6 June 2020, IT contractor jobs citing JavaScript also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the Hertfordshire region with a requirement for JavaScript.

1 40 (51.28%) Agile Software Development
2 38 (48.72%) HTML
3 34 (43.59%) Java
3 34 (43.59%) .NET
4 33 (42.31%) CSS
5 32 (41.03%) C#
6 29 (37.18%) Web Services
7 25 (32.05%) Node.js
8 24 (30.77%) Scrum
9 23 (29.49%) jQuery
9 23 (29.49%) Linux
10 22 (28.21%) Git (software)
11 20 (25.64%) MVC
12 19 (24.36%) Microsoft
12 19 (24.36%) Software Engineering
12 19 (24.36%) Degree
13 18 (23.08%) E-Commerce
13 18 (23.08%) AngularJS
14 17 (21.79%) Mathematics
15 16 (20.51%) Qt
15 16 (20.51%) NetBeans
15 16 (20.51%) Military
15 16 (20.51%) C++
15 16 (20.51%) SQL Server
15 16 (20.51%) Visual Studio
15 16 (20.51%) TCP/IP
15 16 (20.51%) Eclipse
15 16 (20.51%) Ethernet
15 16 (20.51%) Aerospace
16 15 (19.23%) OpenGL

JavaScript
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 7 (8.97%) CMS
2 4 (5.13%) Confluence
2 4 (5.13%) Tomcat
3 3 (3.85%) Apache
3 3 (3.85%) Headless CMS
3 3 (3.85%) WebSphere
4 2 (2.56%) Adobe Experience Manager
4 2 (2.56%) IIS
4 2 (2.56%) SharePoint
5 1 (1.28%) Apache Spark
5 1 (1.28%) nginx
5 1 (1.28%) Sitecore CMS
Applications
1 5 (6.41%) Sketch
2 3 (3.85%) Photoshop
3 2 (2.56%) Adobe XD
3 2 (2.56%) Figma
3 2 (2.56%) OmniGraffle
4 1 (1.28%) Microsoft Excel
4 1 (1.28%) MS Visio
Business Applications
1 10 (12.82%) Magento
2 3 (3.85%) Shopify
Cloud Services
1 8 (10.26%) Azure
2 7 (8.97%) AWS
3 2 (2.56%) Adobe Creative Cloud
3 2 (2.56%) Google Analytics
3 2 (2.56%) Power Platform
4 1 (1.28%) Amazon EMR
4 1 (1.28%) AWS Lambda
4 1 (1.28%) npm
4 1 (1.28%) SaaS
4 1 (1.28%) Serverless
Communications & Networking
1 16 (20.51%) Ethernet
1 16 (20.51%) TCP/IP
2 5 (6.41%) SMS
3 3 (3.85%) HTTP
4 1 (1.28%) IKE
4 1 (1.28%) Intranet
Database & Business Intelligence
1 16 (20.51%) SQL Server
2 11 (14.10%) MySQL
3 5 (6.41%) SQL Server Analysis Services
3 5 (6.41%) UniData
4 4 (5.13%) Microsoft Analysis Services
5 3 (3.85%) NoSQL
5 3 (3.85%) Relational Database
6 2 (2.56%) Power BI
6 2 (2.56%) SQL Server 2008
7 1 (1.28%) Amazon DynamoDB
7 1 (1.28%) Amazon Redshift
7 1 (1.28%) Big Data
7 1 (1.28%) Data Mining
7 1 (1.28%) Data Warehouse
7 1 (1.28%) Hadoop
7 1 (1.28%) mvBase
7 1 (1.28%) SQL Server Integration Services
Development Applications
1 22 (28.21%) Git (software)
2 16 (20.51%) Eclipse
2 16 (20.51%) NetBeans
2 16 (20.51%) Visual Studio
3 7 (8.97%) JIRA
4 6 (7.69%) Jasmine
5 5 (6.41%) Jenkins
5 5 (6.41%) Karma Test Runner
5 5 (6.41%) Vagrant
6 4 (5.13%) Bitbucket
6 4 (5.13%) Grunt
6 4 (5.13%) gulp
7 2 (2.56%) Balsamiq
7 2 (2.56%) Protractor
7 2 (2.56%) Selenium
8 1 (1.28%) Appium
8 1 (1.28%) Bower
General
1 16 (20.51%) Aerospace
1 16 (20.51%) Military
2 12 (15.38%) Retail
3 11 (14.10%) Finance
4 6 (7.69%) Games
5 2 (2.56%) Automotive
5 2 (2.56%) Pharmaceutical
6 1 (1.28%) Law
6 1 (1.28%) Marketing
Job Titles
1 52 (66.67%) Developer
2 11 (14.10%) Front End Developer (Client-Side Developer)
3 9 (11.54%) .NET Developer
4 6 (7.69%) Magento Developer
4 6 (7.69%) PHP Developer
5 5 (6.41%) C# Developer
5 5 (6.41%) Full Stack Developer
5 5 (6.41%) Java Developer
5 5 (6.41%) React Developer
6 3 (3.85%) Angular Developer
6 3 (3.85%) UI Developer
7 2 (2.56%) Analyst
7 2 (2.56%) Architect
7 2 (2.56%) C# .NET Developer
7 2 (2.56%) Designer
7 2 (2.56%) JavaScript Developer
7 2 (2.56%) Node.js Developer
7 2 (2.56%) Senior Developer
7 2 (2.56%) UX Designer
8 1 (1.28%) Tester
Libraries, Frameworks & Software Standards
1 38 (48.72%) HTML
2 34 (43.59%) .NET
3 33 (42.31%) CSS
4 29 (37.18%) Web Services
5 25 (32.05%) Node.js
6 23 (29.49%) jQuery
7 18 (23.08%) AngularJS
8 16 (20.51%) Qt
9 15 (19.23%) ActiveX
9 15 (19.23%) DirectX
9 15 (19.23%) MFC
9 15 (19.23%) OpenGL
10 14 (17.95%) ASP.NET
11 12 (15.38%) HTML5
12 11 (14.10%) React
13 10 (12.82%) XHTML
14 6 (7.69%) ASP.NET MVC
14 6 (7.69%) LAMP
14 6 (7.69%) XML
14 6 (7.69%) XSL
Miscellaneous
1 6 (7.69%) User Experience
2 4 (5.13%) W3C
3 3 (3.85%) Analytical Skills
3 3 (3.85%) Greenfield Project
4 2 (2.56%) Biotechnology
5 1 (1.28%) Vector Graphics
Operating Systems
1 23 (29.49%) Linux
2 15 (19.23%) Windows
3 1 (1.28%) CoreOS
Processes & Methodologies
1 40 (51.28%) Agile Software Development
2 24 (30.77%) Scrum
3 20 (25.64%) MVC
4 19 (24.36%) Software Engineering
5 18 (23.08%) E-Commerce
6 17 (21.79%) Mathematics
7 12 (15.38%) Front End Development
8 11 (14.10%) OO
9 9 (11.54%) Unit Testing
10 8 (10.26%) Problem-Solving
10 8 (10.26%) TDD
10 8 (10.26%) Web Development
11 6 (7.69%) OO PHP
11 6 (7.69%) Wireframes
12 5 (6.41%) BDD
12 5 (6.41%) Responsive Web Design
12 5 (6.41%) Waterfall
13 4 (5.13%) Analytics
13 4 (5.13%) Continuous Integration
13 4 (5.13%) CRM
Programming Languages
1 34 (43.59%) Java
2 32 (41.03%) C#
3 16 (20.51%) C++
4 15 (19.23%) GLSL
4 15 (19.23%) HLSL
5 13 (16.67%) PHP
6 12 (15.38%) SQL
7 7 (8.97%) Python
8 6 (7.69%) C
9 5 (6.41%) VB.NET
10 4 (5.13%) Bash Shell
10 4 (5.13%) TypeScript
10 4 (5.13%) UniBasic
10 4 (5.13%) XAML
11 1 (1.28%) Haskell
11 1 (1.28%) Scala
11 1 (1.28%) VBA
Qualifications
1 19 (24.36%) Degree
2 15 (19.23%) SC Cleared
2 15 (19.23%) Security Cleared
3 1 (1.28%) Computer Science Degree
Quality Assurance & Compliance
1 2 (2.56%) QA
2 1 (1.28%) HL7
System Software
1 6 (7.69%) Docker
Systems Management
1 6 (7.69%) Kubernetes
2 4 (5.13%) Ansible
2 4 (5.13%) Opscode Chef
2 4 (5.13%) Packer
2 4 (5.13%) Puppet
2 4 (5.13%) Terraform
Vendors
1 19 (24.36%) Microsoft
2 7 (8.97%) Zend
3 6 (7.69%) Adobe
4 5 (6.41%) jBASE
4 5 (6.41%) Oracle
5 3 (3.85%) Ariba
5 3 (3.85%) Google
5 3 (3.85%) hybris
5 3 (3.85%) IBM
5 3 (3.85%) SAP
6 1 (1.28%) Demandware
6 1 (1.28%) Salesforce.com
6 1 (1.28%) Sencha
6 1 (1.28%) Sitecore
6 1 (1.28%) Talend