Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies advertised in Cardiff with a requirement for JSON skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JSON over the 6 months to 22 November 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.

JSON
South Wales > Cardiff
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 44 44 75
Rank change year-on-year 0 +31 -41
Contract jobs citing JSON 18 15 7
As % of all contract IT jobs advertised in Cardiff 2.94% 2.69% 0.81%
As % of the Libraries, Frameworks & Software Standards category 10.11% 11.45% 2.44%
Number of daily rates quoted 12 11 4
Cardiff median daily rate £438 £365 £375
Median daily rate % change year-on-year +19.86% -2.67% -16.67%
10th Percentile £302 £313 £333
90th Percentile £480 £400 £439
South Wales median daily rate £413 £475 £375
% change year-on-year -13.16% +26.67% -14.29%
Number of hourly rates quoted 0 0 0
Cardiff median hourly rate - - -
South Wales median hourly rate - - -

JSON 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 Cardiff with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
Cardiff
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 178 131 287
As % of all contract IT jobs advertised in Cardiff 29.04% 23.48% 33.03%
Number of daily rates quoted 128 102 246
Cardiff median daily rate £371 £381 £326
Median daily rate % change year-on-year -2.75% +16.86% -6.79%
10th Percentile £191 £263 £219
90th Percentile £475 £525 £450
South Wales median daily rate £375 £425 £363
% change year-on-year -11.76% +17.24% +7.41%
Number of hourly rates quoted 1 1 2
Cardiff median hourly rate £23.14 £21.50 £15.00
Median hourly rate % change year-on-year +7.63% +43.33% -89.66%
10th Percentile £21.87 £21.50 £10.15
90th Percentile £24.42 £21.50 £20.25
South Wales median hourly rate £23.14 £21.50 £16.00
% change year-on-year +7.63% +34.38% -36.00%

JSON
Job Vacancy Trend in Cardiff

Job postings citing JSON as a percentage of all IT jobs advertised in Cardiff.

Job vacancy trend for JSON in Cardiff

JSON
Contractor Daily Rate Trend in Cardiff

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JSON in Cardiff.

Contractor daily rate trend for JSON in Cardiff

JSON
Contractor Daily Rate Histogram in Cardiff

The daily rate distribution of IT jobs citing JSON in Cardiff over the 6 months to 22 November 2017.

Contractor daily rate histogram for JSON in Cardiff

For the 6 months to 22 November 2017, IT contractor jobs citing JSON 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 Cardiff region with a requirement for JSON.

1 15 (83.33%) TDD
2 14 (77.78%) JavaScript
3 13 (72.22%) HTML
3 13 (72.22%) CSS
3 13 (72.22%) Ajax
3 13 (72.22%) HTML5
3 13 (72.22%) Node.js
3 13 (72.22%) CSS3
4 12 (66.67%) Git (software)
4 12 (66.67%) Test Automation
4 12 (66.67%) Grunt
4 12 (66.67%) gulp
5 11 (61.11%) SonarQube
5 11 (61.11%) Responsive Web Design
5 11 (61.11%) Unit Testing
6 10 (55.56%) Perforce
6 10 (55.56%) Performance Optimisation
6 10 (55.56%) npm
7 9 (50.00%) Agile Software Development
8 8 (44.44%) Finance
8 8 (44.44%) Scrum
9 6 (33.33%) Java
10 5 (27.78%) XML
10 5 (27.78%) OO
10 5 (27.78%) Continuous Integration
11 4 (22.22%) Data Protection
11 4 (22.22%) Spring
11 4 (22.22%) BDD
11 4 (22.22%) SQL
11 4 (22.22%) Banking

JSON
Co-occurring IT Skills in Cardiff 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:

Applications
1 1 (5.56%) Chatbot
Cloud Services
1 10 (55.56%) npm
Communications & Networking
1 1 (5.56%) RTSP
Database & Business Intelligence
1 3 (16.67%) RDBMS
1 3 (16.67%) Relational Database
1 3 (16.67%) SQL Server
2 1 (5.56%) MongoDB
2 1 (5.56%) PostgreSQL
Development Applications
1 12 (66.67%) Git (software)
1 12 (66.67%) Grunt
1 12 (66.67%) gulp
2 11 (61.11%) SonarQube
3 3 (16.67%) Eclipse
3 3 (16.67%) Gradle
3 3 (16.67%) JProfiler
3 3 (16.67%) JUnit
4 2 (11.11%) webpack
5 1 (5.56%) IntelliJ
5 1 (5.56%) Xcode
General
1 8 (44.44%) Finance
2 4 (22.22%) Banking
Job Titles
1 16 (88.89%) Developer
2 8 (44.44%) UI Developer
3 4 (22.22%) JavaScript Developer
4 3 (16.67%) Java Developer
5 2 (11.11%) Android Developer
5 2 (11.11%) Front End Developer (Client-Side Developer)
5 2 (11.11%) HTML CSS Developer
5 2 (11.11%) HTML Developer
6 1 (5.56%) Angular Developer
6 1 (5.56%) Applications Developer
6 1 (5.56%) Designer
6 1 (5.56%) Full Stack Developer
6 1 (5.56%) iOS Developer
6 1 (5.56%) Mobile Applications Developer
6 1 (5.56%) SC Cleared Java Developer
6 1 (5.56%) Scala Developer
6 1 (5.56%) UI Designer
6 1 (5.56%) Web Developer
Libraries, Frameworks & Software Standards
1 13 (72.22%) Ajax
1 13 (72.22%) CSS
1 13 (72.22%) CSS3
1 13 (72.22%) HTML
1 13 (72.22%) HTML5
1 13 (72.22%) Node.js
2 5 (27.78%) XML
3 4 (22.22%) React
3 4 (22.22%) Spring
4 3 (16.67%) Angular 2
4 3 (16.67%) AngularJS
4 3 (16.67%) Hibernate
4 3 (16.67%) J2EE
4 3 (16.67%) JPA
4 3 (16.67%) jQuery
4 3 (16.67%) XSLT
5 2 (11.11%) Velocity
6 1 (5.56%) Redux
6 1 (5.56%) RESTful
6 1 (5.56%) Sass
Miscellaneous
1 2 (11.11%) User Experience
2 1 (5.56%) Computer Science
2 1 (5.56%) Data Structures
2 1 (5.56%) Greenfield Project
Operating Systems
1 2 (11.11%) Android
2 1 (5.56%) Apple iOS
Processes & Methodologies
1 15 (83.33%) TDD
2 12 (66.67%) Test Automation
3 11 (61.11%) Responsive Web Design
3 11 (61.11%) Unit Testing
4 10 (55.56%) Performance Optimisation
5 9 (50.00%) Agile Software Development
6 8 (44.44%) Scrum
7 5 (27.78%) Continuous Integration
7 5 (27.78%) OO
8 4 (22.22%) BDD
8 4 (22.22%) Data Protection
8 4 (22.22%) Mobile Development
9 3 (16.67%) Data Modelling
9 3 (16.67%) RAD
9 3 (16.67%) SDLC
10 2 (11.11%) Android Development
10 2 (11.11%) Front End Development
10 2 (11.11%) Software Engineering
10 2 (11.11%) Waterfall
11 1 (5.56%) iOS Development
Programming Languages
1 14 (77.78%) JavaScript
2 6 (33.33%) Java
3 4 (22.22%) SQL
4 1 (5.56%) Apple Swift
4 1 (5.56%) ES6
4 1 (5.56%) Objective-C
4 1 (5.56%) Scala
Qualifications
1 1 (5.56%) BPSS Clearance
1 1 (5.56%) SC Cleared
1 1 (5.56%) Security Cleared
Quality Assurance & Compliance
1 1 (5.56%) WCAG
Vendors
1 10 (55.56%) Perforce
2 3 (16.67%) Oracle
3 1 (5.56%) Apple