Period
to 20 November 2017

The median contractor rate for a JavaScript Developer was £475 per day in advertised job vacancies in Middlesex during the 6 months to 20 November 2017.

The first table below provides contractor rate benchmarking and summary statistics including a comparison to 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 Developer
South East > Middlesex
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 10 24 31
Rank change year-on-year +14 +7 0
Contract jobs requiring a JavaScript Developer 26 17 9
As % of all contract IT jobs advertised in Middlesex 10.04% 4.79% 2.54%
As % of the Job Titles category 10.53% 4.97% 2.79%
Number of daily rates quoted 29 16 7
Middlesex median daily rate £475 £425 £375
Median daily rate % change year-on-year +11.76% +13.33% +7.14%
10th Percentile £300 £384 £296
90th Percentile £488 £488 £430
South East median daily rate £438 £400 £375
% change year-on-year +9.38% +6.67% +7.14%
Number of hourly rates quoted 0 0 0
Middlesex median hourly rate - - -
South East median hourly rate £45.00 £36.50 -
% change year-on-year +23.29% - -

The following table is for comparison with the above and includes summary statistics for all contract IT job vacancies advertised in Middlesex. 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 contract jobs in our overall sample.

All Contract IT Job Vacancies
Middlesex
Contract vacancies in Middlesex with a recognized job title 247 342 323
% of contract IT jobs with a recognized job title 95.37% 96.34% 91.24%
Number of daily rates quoted 172 204 162
Middlesex median daily rate £433 £413 £388
Median daily rate % change year-on-year +4.97% +6.45% +3.33%
10th Percentile £263 £281 £263
90th Percentile £537 £550 £494
South East median daily rate £415 £400 £388
% change year-on-year +3.75% +3.23% +7.12%
Number of hourly rates quoted 1 10 14
Middlesex median hourly rate £31.00 £33.75 £33.75
Median hourly rate % change year-on-year -8.15% - +33.24%
10th Percentile £30.50 £17.10 £12.70
90th Percentile £31.50 £39.18 £48.38
South East median hourly rate £18.00 £19.63 £18.50
% change year-on-year -8.28% +6.08% +15.63%

JavaScript Developer
Job Vacancy Trend in Middlesex

Job postings that featured JavaScript Developer in the job title as a percentage of all IT jobs advertised in Middlesex.

Job vacancy trend for JavaScript Developer in Middlesex

JavaScript Developer
Contractor Daily Rate Trend in Middlesex

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

Contractor daily rate trend for JavaScript Developer in Middlesex

JavaScript Developer
Contractor Daily Rate Histogram in Middlesex

The daily rate distribution of IT jobs citing JavaScript Developer in Middlesex over the 6 months to 20 November 2017.

Contractor daily rate histogram for JavaScript Developer in Middlesex

JavaScript Developer
Contractor Hourly Rate Trend in Middlesex

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

Contractor hourly rate trend for JavaScript Developer in Middlesex

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

For the 6 months to 20 November 2017, JavaScript Developer contract jobs required the following IT skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Middlesex region featuring JavaScript Developer in the job title.

1 26 (100.00%) JavaScript
2 23 (88.46%) CSS
2 23 (88.46%) HTML
3 16 (61.54%) AngularJS
4 12 (46.15%) OO
5 11 (42.31%) Agile Software Development
6 9 (34.62%) React
6 9 (34.62%) jQuery
7 8 (30.77%) XHTML
8 7 (26.92%) Front End Development
8 7 (26.92%) Node.js
9 5 (19.23%) User Experience
9 5 (19.23%) PHP
10 4 (15.38%) Telecoms
11 3 (11.54%) TDD
11 3 (11.54%) Web Development
11 3 (11.54%) Jasmine
11 3 (11.54%) BDD
11 3 (11.54%) MongoDB
12 2 (7.69%) HTML5
12 2 (7.69%) Mocha
12 2 (7.69%) CSS3
12 2 (7.69%) Git (software)
12 2 (7.69%) Test Automation
12 2 (7.69%) Analytics
12 2 (7.69%) Karma Test Runner
12 2 (7.69%) Degree
12 2 (7.69%) Retail
12 2 (7.69%) Ajax
12 2 (7.69%) Web Analytics

JavaScript Developer Skill Set
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:

Cloud Services
1 1 (3.85%) Amazon AWS
1 1 (3.85%) AWS Lambda
1 1 (3.85%) Serverless
Communications & Networking
1 2 (7.69%) Internet
Database & Business Intelligence
1 3 (11.54%) MongoDB
Development Applications
1 3 (11.54%) Jasmine
2 2 (7.69%) Git (software)
2 2 (7.69%) Karma Test Runner
2 2 (7.69%) Mocha
General
1 4 (15.38%) Telecoms
2 2 (7.69%) Retail
3 1 (3.85%) Marketing
Libraries, Frameworks & Software Standards
1 23 (88.46%) CSS
1 23 (88.46%) HTML
2 16 (61.54%) AngularJS
3 9 (34.62%) jQuery
3 9 (34.62%) React
4 8 (30.77%) XHTML
5 7 (26.92%) Node.js
6 2 (7.69%) Ajax
6 2 (7.69%) CSS3
6 2 (7.69%) HTML5
7 1 (3.85%) DOM
7 1 (3.85%) Flash
7 1 (3.85%) Meteor
7 1 (3.85%) Visualforce
7 1 (3.85%) WebSockets
7 1 (3.85%) XML
Miscellaneous
1 5 (19.23%) User Experience
2 1 (3.85%) Analytical Skills
2 1 (3.85%) Animation
2 1 (3.85%) Linux Command Line
Operating Systems
1 1 (3.85%) Linux
1 1 (3.85%) Unix
Processes & Methodologies
1 12 (46.15%) OO
2 11 (42.31%) Agile Software Development
3 7 (26.92%) Front End Development
4 3 (11.54%) BDD
4 3 (11.54%) TDD
4 3 (11.54%) Web Development
5 2 (7.69%) Analytics
5 2 (7.69%) Isomorphic JavaScript
5 2 (7.69%) Test Automation
5 2 (7.69%) Web Analytics
6 1 (3.85%) Continuous Improvement
6 1 (3.85%) Continuous Integration
6 1 (3.85%) DOM Manipulation/Scripting
6 1 (3.85%) Don't repeat yourself (DRY)
6 1 (3.85%) MVC
6 1 (3.85%) Pair Programming
6 1 (3.85%) Project Management
6 1 (3.85%) Responsive Web Design
6 1 (3.85%) Web Design
6 1 (3.85%) Wireframes
Programming Languages
1 26 (100.00%) JavaScript
2 5 (19.23%) PHP
3 2 (7.69%) SQL
4 1 (3.85%) ActionScript
Qualifications
1 2 (7.69%) Degree
Vendors
1 1 (3.85%) Salesforce.com