Period
to 21 February 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London 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 6 months to 21 February 2018 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
Central London > City of London
6 months to
21 Feb 2018
Same period 2017 Same period 2016
Rank 231 189 154
Rank change year-on-year -42 -35 +25
Contract jobs citing Backbone.js 22 41 70
As % of all contract IT jobs advertised in the City of London 0.31% 0.66% 1.06%
As % of the Libraries, Frameworks & Software Standards category 0.82% 1.84% 3.31%
Number of daily rates quoted 21 35 63
City of London median daily rate £520 £425 £450
Median daily rate % change year-on-year +22.35% -5.56% +12.50%
10th Percentile £425 £349 £275
90th Percentile £638 £570 £601
Central London median daily rate £520 £450 £450
% change year-on-year +15.56% - +9.76%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Backbone.js is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
City of London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 2,699 2,225 2,115
As % of all contract IT jobs advertised in the City of London 38.02% 36.08% 31.89%
Number of daily rates quoted 2,304 1,885 1,771
City of London median daily rate £513 £488 £475
Median daily rate % change year-on-year +5.13% +2.63% +5.56%
10th Percentile £363 £325 £313
90th Percentile £675 £650 £638
Central London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +2.86%
Number of hourly rates quoted 10 1 9
City of London median hourly rate £24.30 £54.25 £37.50
Median hourly rate % change year-on-year -55.21% +44.65% +30.73%
10th Percentile £21.20 £51.62 £19.95
90th Percentile £67.50 £56.87 £60.00
Central London median hourly rate £24.30 £54.25 £37.50
% change year-on-year -55.21% +44.65% +25.00%

Backbone.js
Job Vacancy Trend in the City of London

Job postings citing Backbone.js as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Backbone.js in the City of London

Backbone.js
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Backbone.js in the City of London

Backbone.js
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Backbone.js in the City of London over the 6 months to 21 February 2018.

Contractor daily rate histogram for Backbone.js in the City of London

For the 6 months to 21 February 2018, IT contractor jobs citing Backbone.js 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 City of London region with a requirement for Backbone.js.

1 18 (81.82%) AngularJS
2 17 (77.27%) JavaScript
3 13 (59.09%) HTML
3 13 (59.09%) CSS
3 13 (59.09%) Node.js
4 11 (50.00%) TDD
5 10 (45.45%) Kanban
5 10 (45.45%) Scrum
5 10 (45.45%) HTML5
5 10 (45.45%) React
6 8 (36.36%) MVC
7 7 (31.82%) .NET
7 7 (31.82%) C#
7 7 (31.82%) Front End Development
7 7 (31.82%) Fintech
7 7 (31.82%) Agile Software Development
7 7 (31.82%) BDD
7 7 (31.82%) ASP.NET Web API
8 6 (27.27%) Sass
8 6 (27.27%) Mocha
8 6 (27.27%) ES6
8 6 (27.27%) Redux
8 6 (27.27%) SOLID
8 6 (27.27%) OO
8 6 (27.27%) Pair Programming
8 6 (27.27%) Software Engineering
8 6 (27.27%) Git (software)
9 5 (22.73%) Test Automation
9 5 (22.73%) Inversion of Control
9 5 (22.73%) Domain-Driven Design

Backbone.js
Co-occurring IT Skills in the City of London 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 1 (4.55%) Apache
Cloud Services
1 3 (13.64%) SaaS
2 1 (4.55%) AWS Lambda
Communications & Networking
1 1 (4.55%) HTTP
Database & Business Intelligence
1 1 (4.55%) MongoDB
1 1 (4.55%) MySQL
Development Applications
1 6 (27.27%) Git (software)
1 6 (27.27%) Mocha
2 5 (22.73%) Cucumber
2 5 (22.73%) Karma Test Runner
2 5 (22.73%) Octopus Deploy
2 5 (22.73%) TeamCity
3 1 (4.55%) Hudson
3 1 (4.55%) Jenkins
3 1 (4.55%) JIRA
3 1 (4.55%) Sinon.JS
General
1 1 (4.55%) Finance
1 1 (4.55%) Financial Institution
1 1 (4.55%) Marketing
Job Titles
1 21 (95.45%) Developer
2 11 (50.00%) JavaScript Developer
3 5 (22.73%) Analytics Developer
3 5 (22.73%) React Developer
3 5 (22.73%) Risk Analytics Developer
3 5 (22.73%) Sitecore Developer
4 4 (18.18%) HTML Developer
4 4 (18.18%) UI Developer
5 3 (13.64%) Angular Developer
5 3 (13.64%) UI/UX Developer
5 3 (13.64%) UX Developer
5 3 (13.64%) Web Developer
5 3 (13.64%) Web UI Developer
5 3 (13.64%) Web UI/UX Developer
6 2 (9.09%) Front End Developer (Client-Side Developer)
7 1 (4.55%) PHP Developer
7 1 (4.55%) Senior Developer
7 1 (4.55%) Senior Front-End Developer
7 1 (4.55%) Senior Software Engineer
7 1 (4.55%) Software Engineer
Libraries, Frameworks & Software Standards
1 18 (81.82%) AngularJS
2 13 (59.09%) CSS
2 13 (59.09%) HTML
2 13 (59.09%) Node.js
3 10 (45.45%) HTML5
3 10 (45.45%) React
4 7 (31.82%) .NET
4 7 (31.82%) ASP.NET Web API
5 6 (27.27%) Redux
5 6 (27.27%) Sass
6 5 (22.73%) jQuery
6 5 (22.73%) KnockoutJS
6 5 (22.73%) LESS
6 5 (22.73%) Razor View Engine
6 5 (22.73%) Twitter Bootstrap
7 3 (13.64%) RequireJS
7 3 (13.64%) RESTful
8 2 (9.09%) .NET Framework
8 2 (9.09%) CSS3
8 2 (9.09%) REST
Miscellaneous
1 7 (31.82%) Fintech
2 5 (22.73%) User Experience
2 5 (22.73%) Wiki
3 3 (13.64%) Social Media
4 1 (4.55%) Analytical Skills
4 1 (4.55%) Derivative
4 1 (4.55%) Market Risk
4 1 (4.55%) Tandem
4 1 (4.55%) Virtual Team
Operating Systems
1 1 (4.55%) Android
1 1 (4.55%) Apple iOS
1 1 (4.55%) Linux
1 1 (4.55%) Windows
Processes & Methodologies
1 11 (50.00%) TDD
2 10 (45.45%) Kanban
2 10 (45.45%) Scrum
3 8 (36.36%) MVC
4 7 (31.82%) Agile Software Development
4 7 (31.82%) BDD
4 7 (31.82%) Front End Development
5 6 (27.27%) OO
5 6 (27.27%) Pair Programming
5 6 (27.27%) Software Engineering
5 6 (27.27%) SOLID
6 5 (22.73%) Analytics
6 5 (22.73%) Domain-Driven Design
6 5 (22.73%) Inversion of Control
6 5 (22.73%) Planning Poker
6 5 (22.73%) Refactoring
6 5 (22.73%) Risk Analytics
6 5 (22.73%) Software Delivery
6 5 (22.73%) Test Automation
7 4 (18.18%) Web Development
Programming Languages
1 17 (77.27%) JavaScript
2 7 (31.82%) C#
3 6 (27.27%) ES6
4 2 (9.09%) Java
4 2 (9.09%) PHP
5 1 (4.55%) Python
5 1 (4.55%) Ruby
5 1 (4.55%) Scala
Qualifications
1 1 (4.55%) Degree
Vendors
1 5 (22.73%) Sitecore
2 3 (13.64%) Splunk