The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for Backbone.js skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Backbone.js 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.

Backbone.js
East of England / Hertfordshire
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 58 57 71
Rank change year-on-year -1 +14  
Contract jobs citing Backbone.js 1 2 4
As % of all contract IT jobs advertised in Hertfordshire 0.16% 0.30% 0.45%
As % of the Libraries, Frameworks & Software Standards category 0.67% 1.72% 1.79%
Number of daily rates quoted 1 0 4
Median daily rate £330 - £355
UK excluding London median daily rate £360 £375 £375
% change year-on-year -4.00% -  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Backbone.js is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
Hertfordshire
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 149 116 223
As % of all contract IT job vacancies advertised in Hertfordshire 23.88% 17.58% 24.94%
Number of daily rates quoted 107 75 118
Median daily rate £375 £425 £375
Median daily rate % change year-on-year -11.76% +13.33%  
90% offered a daily rate of more than £290 £300 £288
10% offered a daily rate of more than £450 £500 £463
UK excluding London median daily rate £398 £375 £350
% change year-on-year +6.00% +7.14%  
Number of hourly rates quoted 1 1 6
Median hourly rate £15.00 £10.00 £20.94
Median hourly rate % change year-on-year +50.00% -52.23%  
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

Backbone.js
Job Vacancy Trend in Hertfordshire

The job posting trend of jobs advertised in Hertfordshire citing Backbone.js as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for Backbone.js in Hertfordshire

Backbone.js
Contractor Daily Rate Trend in Hertfordshire

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Backbone.js in Hertfordshire.

Contractor daily rate trend for Backbone.js in Hertfordshire

For the 6 months to 24 June 2017, IT contractor jobs citing Backbone.js 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 Hertfordshire region with a requirement for Backbone.js.

1 2 (100.00%) HTML
1 2 (100.00%) JavaScript
1 2 (100.00%) CSS
1 2 (100.00%) HTML5
1 2 (100.00%) CSS3
1 2 (100.00%) User Experience
1 2 (100.00%) React
1 2 (100.00%) AngularJS
2 1 (50.00%) OO PHP
2 1 (50.00%) BEM - Block Element Modifier
2 1 (50.00%) Front End Development
2 1 (50.00%) Vue.js
2 1 (50.00%) Chai
2 1 (50.00%) KnockoutJS
2 1 (50.00%) Sass
2 1 (50.00%) LESS
2 1 (50.00%) Ember.js
2 1 (50.00%) Mocha
2 1 (50.00%) OO
2 1 (50.00%) E-Commerce
2 1 (50.00%) jQuery
2 1 (50.00%) Unit Testing
2 1 (50.00%) Finance
2 1 (50.00%) Law
2 1 (50.00%) TDD
2 1 (50.00%) PHP
2 1 (50.00%) MySQL

Backbone.js
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:

Database & Business Intelligence
1 1 (50.00%) MySQL
Development Applications
1 1 (50.00%) Mocha
General
1 1 (50.00%) Finance
1 1 (50.00%) Law
Job Titles
1 2 (100.00%) Developer
1 2 (100.00%) JavaScript Developer
2 1 (50.00%) Front End Developer (Client-Side Developer)
2 1 (50.00%) Senior Developer
2 1 (50.00%) Senior Front-End Developer
2 1 (50.00%) Senior JavaScript Developer
Libraries, Frameworks & Software Standards
1 2 (100.00%) AngularJS
1 2 (100.00%) CSS
1 2 (100.00%) CSS3
1 2 (100.00%) HTML
1 2 (100.00%) HTML5
1 2 (100.00%) React
2 1 (50.00%) Chai
2 1 (50.00%) Ember.js
2 1 (50.00%) jQuery
2 1 (50.00%) KnockoutJS
2 1 (50.00%) LESS
2 1 (50.00%) Sass
2 1 (50.00%) Vue.js
Miscellaneous
1 2 (100.00%) User Experience
Processes & Methodologies
1 1 (50.00%) BEM - Block Element Modifier
1 1 (50.00%) E-Commerce
1 1 (50.00%) Front End Development
1 1 (50.00%) OO
1 1 (50.00%) OO PHP
1 1 (50.00%) TDD
1 1 (50.00%) Unit Testing
Programming Languages
1 2 (100.00%) JavaScript
2 1 (50.00%) PHP