Period
to 24 February 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 24 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.

Sinon.JS
Central London > City of London
6 months to
24 Feb 2018
Same period 2017 Same period 2016
Rank 247 222 214
Rank change year-on-year -25 -8 +77
Contract jobs citing Sinon.JS 8 9 12
As % of all contract IT jobs advertised in the City of London 0.11% 0.15% 0.18%
As % of the Development Applications category 0.60% 0.82% 1.22%
Number of daily rates quoted 6 5 12
City of London median daily rate £588 £475 £450
Median daily rate % change year-on-year +23.68% +5.56% +6.51%
10th Percentile £488 £455 £414
90th Percentile £625 £488 £614
Central London median daily rate £475 £475 £550
% change year-on-year - -13.64% +27.91%
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 1,328 1,098 986
As % of all contract IT jobs advertised in the City of London 18.84% 17.91% 14.62%
Number of daily rates quoted 1,078 903 797
City of London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £363 £331 £312
90th Percentile £650 £625 £638
Central London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 3 0 5
City of London median hourly rate £65.00 - £37.50
10th Percentile £62.50 - £32.28
90th Percentile £71.12 - £55.00
Central London median hourly rate £65.00 - £37.50

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 24 February 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 8 (100.00%) Mocha
2 7 (87.50%) React
2 7 (87.50%) ES6
2 7 (87.50%) Agile Software Development
2 7 (87.50%) TDD
2 7 (87.50%) JavaScript
2 7 (87.50%) Redux
3 6 (75.00%) CSS
3 6 (75.00%) Chai
3 6 (75.00%) Node.js
4 5 (62.50%) TypeScript
4 5 (62.50%) Web Services
4 5 (62.50%) HTML
4 5 (62.50%) Web Development
4 5 (62.50%) RESTful
5 4 (50.00%) Test Automation
5 4 (50.00%) HTML5
5 4 (50.00%) Unit Testing
5 4 (50.00%) JMS
5 4 (50.00%) Express
5 4 (50.00%) CSS3
5 4 (50.00%) BDD
5 4 (50.00%) Babel
5 4 (50.00%) webpack
5 4 (50.00%) API Development
5 4 (50.00%) API Design
6 3 (37.50%) Serverless
6 3 (37.50%) Docker
6 3 (37.50%) User Experience
6 3 (37.50%) Git (software)

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 (12.50%) Elasticsearch
Cloud Services
1 3 (37.50%) Serverless
2 1 (12.50%) Amazon AWS
2 1 (12.50%) GitHub
2 1 (12.50%) Heroku
Communications & Networking
1 1 (12.50%) HTTP
Database & Business Intelligence
1 2 (25.00%) LevelDB
2 1 (12.50%) Amazon DynamoDB
2 1 (12.50%) PostgreSQL
2 1 (12.50%) Redis
Development Applications
1 8 (100.00%) Mocha
2 4 (50.00%) Babel
2 4 (50.00%) webpack
3 3 (37.50%) Git (software)
4 2 (25.00%) Gerrit
4 2 (25.00%) Jenkins
5 1 (12.50%) PostCSS
5 1 (12.50%) RSpec
General
1 2 (25.00%) Banking
1 2 (25.00%) Marketing
Job Titles
1 8 (100.00%) Developer
2 5 (62.50%) JavaScript Developer
3 4 (50.00%) React Developer
4 3 (37.50%) Full Stack Developer
5 2 (25.00%) Node.js Developer
6 1 (12.50%) Angular Developer
6 1 (12.50%) Front End Developer (Client-Side Developer)
6 1 (12.50%) HTML CSS Developer
6 1 (12.50%) HTML Developer
6 1 (12.50%) Senior Developer
6 1 (12.50%) Senior Front-End Developer
6 1 (12.50%) Senior JavaScript Developer
Libraries, Frameworks & Software Standards
1 7 (87.50%) React
1 7 (87.50%) Redux
2 6 (75.00%) Chai
2 6 (75.00%) CSS
2 6 (75.00%) Node.js
3 5 (62.50%) HTML
3 5 (62.50%) RESTful
3 5 (62.50%) Web Services
4 4 (50.00%) CSS3
4 4 (50.00%) Express
4 4 (50.00%) HTML5
4 4 (50.00%) JMS
5 2 (25.00%) LESS
6 1 (12.50%) AngularJS
6 1 (12.50%) Backbone.js
6 1 (12.50%) Sass
Miscellaneous
1 3 (37.50%) User Experience
2 2 (25.00%) Greenfield Project
3 1 (12.50%) Fintech
3 1 (12.50%) Tandem
3 1 (12.50%) Virtual Team
Operating Systems
1 1 (12.50%) Linux
1 1 (12.50%) Windows
Processes & Methodologies
1 7 (87.50%) Agile Software Development
1 7 (87.50%) TDD
2 5 (62.50%) Web Development
3 4 (50.00%) API Design
3 4 (50.00%) API Development
3 4 (50.00%) BDD
3 4 (50.00%) Test Automation
3 4 (50.00%) Unit Testing
4 2 (25.00%) Configuration Management
4 2 (25.00%) Continuous Delivery
4 2 (25.00%) Customer-Centricity
4 2 (25.00%) Data Science
4 2 (25.00%) E-Commerce
4 2 (25.00%) SDLC
5 1 (12.50%) Front End Development
5 1 (12.50%) MVC
5 1 (12.50%) OO
5 1 (12.50%) Open Source
5 1 (12.50%) Pair Programming
5 1 (12.50%) SOA
Programming Languages
1 7 (87.50%) ES6
1 7 (87.50%) JavaScript
2 5 (62.50%) TypeScript
3 1 (12.50%) Clojure
3 1 (12.50%) Go
3 1 (12.50%) GraphQL
3 1 (12.50%) PHP
3 1 (12.50%) Ruby
Qualifications
1 1 (12.50%) Degree
System Software
1 3 (37.50%) Docker
Systems Management
1 1 (12.50%) Terraform