Period
to 25 May 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Sinon.JS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Sinon.JS over the 6 months to 25 May 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.

Sinon.JS
Central London > City of London
6 months to
25 May 2018
Same period 2017 Same period 2016
Rank 247 221 228
Rank change year-on-year -26 +7 -
Contract jobs citing Sinon.JS 7 8 6
As % of all contract IT jobs advertised in the City of London 0.10% 0.13% 0.093%
As % of the Development Applications category 0.47% 0.72% 0.61%
Number of daily rates quoted 6 7 6
City of London median daily rate £588 £475 £488
Median daily rate % change year-on-year +23.68% -2.56% -
10th Percentile £488 £440 £425
90th Percentile £625 £520 £550
Central London median daily rate £475 £475 £500
% change year-on-year - -5.00% -
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Sinon.JS is in the Development Applications 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 development application skills.

All Development Application Skills
City of London
Contract vacancies with a requirement for development application skills 1,487 1,116 984
As % of all contract IT jobs advertised in the City of London 21.31% 18.12% 15.18%
Number of daily rates quoted 1,185 868 798
City of London median daily rate £500 £450 £450
Median daily rate % change year-on-year +11.11% - +5.88%
10th Percentile £369 £325 £313
90th Percentile £634 £625 £588
Central London median daily rate £500 £450 £450
% change year-on-year +11.11% - +5.88%
Number of hourly rates quoted 5 0 2
City of London median hourly rate £32.00 - £36.82
10th Percentile £27.40 - £30.78
90th Percentile £70.22 - £45.26
Central London median hourly rate £32.00 - £36.82

Sinon.JS
Job Vacancy Trend in the City of London

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

Job vacancy trend for Sinon.JS in the City of London

Sinon.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 Sinon.JS in the City of London.

Contractor daily rate trend for Sinon.JS in the City of London

For the 6 months to 25 May 2018, IT contractor jobs citing Sinon.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 Sinon.JS.

1 7 (100.00%) Mocha
1 7 (100.00%) React
1 7 (100.00%) ES6
1 7 (100.00%) Redux
2 6 (85.71%) JavaScript
2 6 (85.71%) Agile Software Development
2 6 (85.71%) TDD
3 5 (71.43%) CSS
3 5 (71.43%) RESTful
3 5 (71.43%) Node.js
3 5 (71.43%) Chai
3 5 (71.43%) TypeScript
4 4 (57.14%) Express
4 4 (57.14%) Babel
4 4 (57.14%) webpack
4 4 (57.14%) HTML5
4 4 (57.14%) API Development
4 4 (57.14%) API Design
4 4 (57.14%) CSS3
4 4 (57.14%) BDD
4 4 (57.14%) HTML
4 4 (57.14%) Test Automation
4 4 (57.14%) Web Services
4 4 (57.14%) JMS
4 4 (57.14%) Web Development
4 4 (57.14%) Unit Testing
5 3 (42.86%) Git (software)
5 3 (42.86%) Serverless
5 3 (42.86%) Docker
5 3 (42.86%) User Experience

Sinon.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 (14.29%) Elasticsearch
Cloud Services
1 3 (42.86%) Serverless
2 1 (14.29%) Amazon AWS
2 1 (14.29%) GitHub
2 1 (14.29%) Heroku
Database & Business Intelligence
1 2 (28.57%) LevelDB
2 1 (14.29%) Amazon DynamoDB
2 1 (14.29%) PostgreSQL
2 1 (14.29%) Redis
Development Applications
1 7 (100.00%) Mocha
2 4 (57.14%) Babel
2 4 (57.14%) webpack
3 3 (42.86%) Git (software)
4 2 (28.57%) Gerrit
4 2 (28.57%) Jenkins
5 1 (14.29%) PostCSS
5 1 (14.29%) RSpec
General
1 2 (28.57%) Banking
2 1 (14.29%) Marketing
Job Titles
1 7 (100.00%) Developer
2 4 (57.14%) JavaScript Developer
2 4 (57.14%) React Developer
3 3 (42.86%) Full Stack Developer
4 2 (28.57%) Node.js Developer
Libraries, Frameworks & Software Standards
1 7 (100.00%) React
1 7 (100.00%) Redux
2 5 (71.43%) Chai
2 5 (71.43%) CSS
2 5 (71.43%) Node.js
2 5 (71.43%) RESTful
3 4 (57.14%) CSS3
3 4 (57.14%) Express
3 4 (57.14%) HTML
3 4 (57.14%) HTML5
3 4 (57.14%) JMS
3 4 (57.14%) Web Services
4 2 (28.57%) LESS
5 1 (14.29%) GraphQL
5 1 (14.29%) Sass
Miscellaneous
1 3 (42.86%) User Experience
2 2 (28.57%) Greenfield Project
Processes & Methodologies
1 6 (85.71%) Agile Software Development
1 6 (85.71%) TDD
2 4 (57.14%) API Design
2 4 (57.14%) API Development
2 4 (57.14%) BDD
2 4 (57.14%) Test Automation
2 4 (57.14%) Unit Testing
2 4 (57.14%) Web Development
3 2 (28.57%) Artificial Intelligence
3 2 (28.57%) Configuration Management
3 2 (28.57%) Continuous Delivery
3 2 (28.57%) Customer-Centricity
3 2 (28.57%) Data Science
3 2 (28.57%) E-Commerce
3 2 (28.57%) SDLC
4 1 (14.29%) Open Source
Programming Languages
1 7 (100.00%) ES6
2 6 (85.71%) JavaScript
3 5 (71.43%) TypeScript
4 1 (14.29%) Clojure
4 1 (14.29%) Go
4 1 (14.29%) Ruby
System Software
1 3 (42.86%) Docker
Systems Management
1 1 (14.29%) Terraform