The following table provides summary statistics for contract job vacancies advertised in Middlesex with a requirement for JavaScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JavaScript over the 3 months to 24 June 2017 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)
South East / Middlesex
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 5 5 9
Rank change year-on-year 0 +4  
Contract jobs citing JavaScript 11 29 13
As % of all contract IT jobs advertised in Middlesex 12.36% 16.67% 7.10%
As % of the Programming Languages category 42.31% 42.65% 22.41%
Number of daily rates quoted 6 20 7
Median daily rate £401 £413 £313
Median daily rate % change year-on-year -2.90% +32.00%  
90% offered a daily rate of more than £228 £323 £275
10% offered a daily rate of more than £494 £528 £482
UK excluding London median daily rate £375 £363 £340
% change year-on-year +3.44% +6.61%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £43.39 £37.50 £39.78
% change year-on-year +15.70% -5.71%  

JavaScript is in the programming language skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Middlesex with a requirement for programming language skills.

Contract Programming Language Skills
Middlesex
Contract job vacancies with a requirement for programming language skills 26 68 58
As % of all contract IT job vacancies advertised in Middlesex 29.21% 39.08% 31.69%
Number of daily rates quoted 18 39 28
Median daily rate £385 £360 £300
Median daily rate % change year-on-year +6.80% +20.00%  
90% offered a daily rate of more than £142 £323 £270
10% offered a daily rate of more than £500 £475 £419
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 0 3 4
Median hourly rate - £45.50 £36.56
Median hourly rate % change year-on-year - +24.44%  
UK excluding London median hourly rate £42.50 £37.50 £36.50
% change year-on-year +13.33% +2.73%  

JavaScript
Job Vacancy Trend in Middlesex

The job posting trend of jobs advertised in Middlesex citing JavaScript as a proportion of all contract or permanent IT jobs with a match in the Programming Languages category.

Job vacancy trend for JavaScript in Middlesex

JavaScript
Contractor Daily Rate Trend in Middlesex

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JavaScript in Middlesex.

Contractor daily rate trend for JavaScript in Middlesex

JavaScript
Contractor Daily Rate Histogram in Middlesex

The daily rate distribution of IT jobs citing JavaScript in Middlesex over the 3 months to 24 June 2017.

Contractor daily rate histogram for JavaScript in Middlesex

JavaScript
Contractor Hourly Rate Trend in Middlesex

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JavaScript in Middlesex.

Contractor hourly rate trend for JavaScript in Middlesex

For the 6 months to 24 June 2017, IT contractor jobs citing JavaScript also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Middlesex region with a requirement for JavaScript.

1 21 (84.00%) CSS
2 20 (80.00%) HTML
3 14 (56.00%) HTML5
4 10 (40.00%) Agile Software Development
5 9 (36.00%) SQL Server
5 9 (36.00%) CSS3
6 8 (32.00%) .NET
6 8 (32.00%) ASP.NET
7 7 (28.00%) C#
7 7 (28.00%) SQL
7 7 (28.00%) Front End Development
7 7 (28.00%) Prototyping
8 6 (24.00%) AngularJS
8 6 (24.00%) Analytics
8 6 (24.00%) Java
8 6 (24.00%) Windows
8 6 (24.00%) OO
8 6 (24.00%) MVC
9 5 (20.00%) TDD
9 5 (20.00%) T-SQL
9 5 (20.00%) Node.js
9 5 (20.00%) jQuery
9 5 (20.00%) Git (software)
10 4 (16.00%) JSON
10 4 (16.00%) User Experience
10 4 (16.00%) Web Services
10 4 (16.00%) XML
10 4 (16.00%) OOP
11 3 (12.00%) Unix
11 3 (12.00%) IBM

JavaScript
Co-occurring IT Skills in Middlesex 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 3 (12.00%) Adobe Experience Manager
1 3 (12.00%) CMS
2 1 (4.00%) IIS
2 1 (4.00%) SharePoint
Applications
1 3 (12.00%) Photoshop
Cloud Services
1 3 (12.00%) Adobe Analytics
1 3 (12.00%) Google Analytics
1 3 (12.00%) SaaS
2 1 (4.00%) GitHub
2 1 (4.00%) Office 365
Communications & Networking
1 1 (4.00%) Internet
1 1 (4.00%) Intranet
Database & Business Intelligence
1 9 (36.00%) SQL Server
2 3 (12.00%) SQL Server 2005
3 2 (8.00%) Microsoft Analysis Services
3 2 (8.00%) SQL Server 2012
3 2 (8.00%) SQL Server Analysis Services
3 2 (8.00%) SQL Server Integration Services
3 2 (8.00%) SQL Server Reporting Services
4 1 (4.00%) MongoDB
Development Applications
1 5 (20.00%) Git (software)
2 3 (12.00%) Axure RP
3 2 (8.00%) Jasmine
3 2 (8.00%) Team Foundation Server
3 2 (8.00%) Visual Studio
4 1 (4.00%) Bitbucket
4 1 (4.00%) Karma Test Runner
4 1 (4.00%) Mocha
General
1 1 (4.00%) Back Office
1 1 (4.00%) Local Government
1 1 (4.00%) Marketing
Job Titles
1 22 (88.00%) Developer
2 8 (32.00%) JavaScript Developer
3 7 (28.00%) Front End Developer (Client-Side Developer)
4 6 (24.00%) .NET Developer
5 3 (12.00%) Angular Developer
5 3 (12.00%) C# .NET Developer
5 3 (12.00%) C# Developer
5 3 (12.00%) Designer
5 3 (12.00%) SQL Developer
5 3 (12.00%) SQL Server Developer
5 3 (12.00%) UI Developer
5 3 (12.00%) UX Designer
6 2 (8.00%) Senior Front-End Developer
6 2 (8.00%) Senior JavaScript Developer
6 2 (8.00%) Senior UI Developer
6 2 (8.00%) SSAS Developer
6 2 (8.00%) SSIS Developer
6 2 (8.00%) SSRS Developer
6 2 (8.00%) UI Designer
6 2 (8.00%) UI/UX Designer
Libraries, Frameworks & Software Standards
1 21 (84.00%) CSS
2 20 (80.00%) HTML
3 14 (56.00%) HTML5
4 9 (36.00%) CSS3
5 8 (32.00%) .NET
5 8 (32.00%) ASP.NET
6 6 (24.00%) AngularJS
7 5 (20.00%) jQuery
7 5 (20.00%) Node.js
8 4 (16.00%) JSON
8 4 (16.00%) Web Services
8 4 (16.00%) XML
9 3 (12.00%) ASP.NET MVC
9 3 (12.00%) React
9 3 (12.00%) Twitter Bootstrap
9 3 (12.00%) WinForms
10 2 (8.00%) Ember.js
10 2 (8.00%) KnockoutJS
10 2 (8.00%) REST
10 2 (8.00%) Sass
Miscellaneous
1 4 (16.00%) User Experience
2 2 (8.00%) Clustering
2 2 (8.00%) Minimum Viable Product
3 1 (4.00%) Analytical Skills
3 1 (4.00%) Animation
3 1 (4.00%) Fintech
3 1 (4.00%) Smart Meter
Operating Systems
1 6 (24.00%) Windows
2 3 (12.00%) Unix
3 1 (4.00%) Windows Server
Processes & Methodologies
1 10 (40.00%) Agile Software Development
2 7 (28.00%) Front End Development
2 7 (28.00%) Prototyping
3 6 (24.00%) Analytics
3 6 (24.00%) MVC
3 6 (24.00%) OO
4 5 (20.00%) TDD
5 4 (16.00%) OOP
6 3 (12.00%) Continuous Delivery
6 3 (12.00%) Data Analytics
6 3 (12.00%) Information Architecture
6 3 (12.00%) Multithreading
6 3 (12.00%) Open Source
6 3 (12.00%) Responsive Web Design
6 3 (12.00%) Scrum
6 3 (12.00%) Test Automation
6 3 (12.00%) Usability Testing
6 3 (12.00%) Wireframes
7 2 (8.00%) BDD
7 2 (8.00%) Web Development
Programming Languages
1 7 (28.00%) C#
1 7 (28.00%) SQL
2 6 (24.00%) Java
3 5 (20.00%) T-SQL
4 3 (12.00%) UniBasic
4 3 (12.00%) VB.NET
5 2 (8.00%) PHP
6 1 (4.00%) ActionScript
6 1 (4.00%) C
6 1 (4.00%) ES6
6 1 (4.00%) PHP 5
6 1 (4.00%) VB
Qualifications
1 2 (8.00%) Degree
Quality Assurance & Compliance
1 2 (8.00%) Data Quality
2 1 (4.00%) WCAG
System Software
1 2 (8.00%) Active Directory
Systems Management
1 2 (8.00%) Microsoft Clustering
Vendors
1 3 (12.00%) ClickTale
1 3 (12.00%) IBM
1 3 (12.00%) Redback
1 3 (12.00%) ServiceNow