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 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.

JSON
South Wales / Cardiff
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 32 37 40
Rank change year-on-year +5 +3  
Contract jobs citing JSON 7 2 3
As % of all contract IT jobs advertised in Cardiff 2.18% 0.69% 0.89%
As % of the Libraries, Frameworks & Software Standards category 8.64% 2.22% 2.86%
Number of daily rates quoted 5 1 3
Median daily rate £338 £275 £350
Median daily rate % change year-on-year +22.72% -21.42%  
UK excluding London median daily rate £425 £400 £375
% change year-on-year +6.25% +6.66%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £41.50 £29.14 £55.00
% change year-on-year +42.41% -47.01%  

JSON 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 Cardiff with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
Cardiff
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 81 90 105
As % of all contract IT job vacancies advertised in Cardiff 25.23% 31.14% 31.16%
Number of daily rates quoted 67 70 86
Median daily rate £363 £400 £350
Median daily rate % change year-on-year -9.37% +14.28%  
90% offered a daily rate of more than £315 £298 £200
10% offered a daily rate of more than £400 £475 £425
UK excluding London median daily rate £398 £375 £350
% change year-on-year +6.00% +7.14%  
Number of hourly rates quoted 1 0 0
Median hourly rate £16.28 - -
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

JSON
Job Vacancy Trend in Cardiff

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

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

For the 6 months to 24 June 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 16 (88.89%) Java
2 12 (66.67%) Scrum
2 12 (66.67%) Kafka
3 11 (61.11%) Spring Boot
3 11 (61.11%) Spring
3 11 (61.11%) RESTful
4 10 (55.56%) Agile Software Development
4 10 (55.56%) MongoDB
4 10 (55.56%) Microservices
5 9 (50.00%) Software Engineering
5 9 (50.00%) Test Automation
5 9 (50.00%) Linux
6 8 (44.44%) Cucumber
7 7 (38.89%) iXBRL
7 7 (38.89%) REST
7 7 (38.89%) Hibernate
7 7 (38.89%) HTML
7 7 (38.89%) Dropwizard
7 7 (38.89%) Continuous Deployment
8 6 (33.33%) Relational Database
8 6 (33.33%) Neo4j
8 6 (33.33%) JAX-RS
8 6 (33.33%) Go
8 6 (33.33%) HTTP
8 6 (33.33%) Mac OS X
8 6 (33.33%) Configuration Management
8 6 (33.33%) Unix
9 5 (27.78%) Security Cleared
9 5 (27.78%) Web Design
9 5 (27.78%) Finance

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:

Application Platforms
1 3 (16.67%) Apache
2 2 (11.11%) Apache Spark
3 1 (5.56%) Elasticsearch
3 1 (5.56%) WebLogic
Cloud Services
1 1 (5.56%) BrowserStack
Communications & Networking
1 6 (33.33%) HTTP
2 1 (5.56%) RTSP
Database & Business Intelligence
1 10 (55.56%) MongoDB
2 6 (33.33%) Neo4j
2 6 (33.33%) Relational Database
3 2 (11.11%) Big Data
3 2 (11.11%) Hadoop
3 2 (11.11%) HBase
4 1 (5.56%) Apache Hive
4 1 (5.56%) Impala
4 1 (5.56%) MySQL
4 1 (5.56%) Pentaho
4 1 (5.56%) PostgreSQL
Development Applications
1 8 (44.44%) Cucumber
2 2 (11.11%) Git (software)
3 1 (5.56%) IntelliJ
3 1 (5.56%) JBehave
3 1 (5.56%) JUnit
3 1 (5.56%) Selenium
3 1 (5.56%) Xcode
General
1 5 (27.78%) Finance
2 1 (5.56%) Telecoms
Job Titles
1 16 (88.89%) Developer
2 12 (66.67%) Java Developer
3 2 (11.11%) Android Developer
3 2 (11.11%) Java Engineer
3 2 (11.11%) Software Engineer
4 1 (5.56%) Agile Developer
4 1 (5.56%) Applications Developer
4 1 (5.56%) AWS Developer
4 1 (5.56%) Big Data Engineer
4 1 (5.56%) Data Engineer
4 1 (5.56%) Developer/Software Engineer
4 1 (5.56%) iOS Developer
4 1 (5.56%) Java Software Developer
4 1 (5.56%) Java Software Engineer
4 1 (5.56%) MongoDB Developer
4 1 (5.56%) PHP Developer
4 1 (5.56%) SC Cleared Java Developer
4 1 (5.56%) Senior Java Engineer
4 1 (5.56%) Senior Test Engineer
4 1 (5.56%) Test Engineer
Libraries, Frameworks & Software Standards
1 12 (66.67%) Kafka
2 11 (61.11%) RESTful
2 11 (61.11%) Spring
2 11 (61.11%) Spring Boot
3 7 (38.89%) Dropwizard
3 7 (38.89%) Hibernate
3 7 (38.89%) HTML
3 7 (38.89%) iXBRL
3 7 (38.89%) REST
4 6 (33.33%) JAX-RS
5 4 (22.22%) XML
6 1 (5.56%) Android SDK
6 1 (5.56%) Cocoa
6 1 (5.56%) CSS
6 1 (5.56%) Flash
6 1 (5.56%) LAMP
6 1 (5.56%) Laravel
6 1 (5.56%) Middleware
6 1 (5.56%) SOAP
6 1 (5.56%) Web Services
Miscellaneous
1 1 (5.56%) Analytical Skills
1 1 (5.56%) Computer Science
1 1 (5.56%) Cyberthreat
1 1 (5.56%) Data Structures
Operating Systems
1 9 (50.00%) Linux
2 6 (33.33%) Mac OS X
2 6 (33.33%) Unix
3 2 (11.11%) Android
4 1 (5.56%) Apple iOS
Processes & Methodologies
1 12 (66.67%) Scrum
2 10 (55.56%) Agile Software Development
2 10 (55.56%) Microservices
3 9 (50.00%) Software Engineering
3 9 (50.00%) Test Automation
4 7 (38.89%) Continuous Deployment
5 6 (33.33%) Configuration Management
6 5 (27.78%) Responsive Web Design
6 5 (27.78%) Web Design
7 3 (16.67%) OO
7 3 (16.67%) TDD
8 2 (11.11%) Android Development
8 2 (11.11%) ETL
9 1 (5.56%) BDD
9 1 (5.56%) Dashboard Development
9 1 (5.56%) Domain-Driven Design
9 1 (5.56%) iOS Development
9 1 (5.56%) Mobile Development
9 1 (5.56%) Open Source
9 1 (5.56%) Process Improvement
Programming Languages
1 16 (88.89%) Java
2 6 (33.33%) Go
3 3 (16.67%) SQL
4 1 (5.56%) Apple Swift
4 1 (5.56%) JavaScript
4 1 (5.56%) Objective-C
4 1 (5.56%) PHP
4 1 (5.56%) Python
Qualifications
1 5 (27.78%) Security Cleared
2 4 (22.22%) BPSS Clearance
3 2 (11.11%) SC Cleared
4 1 (5.56%) DV Cleared
Quality Assurance & Compliance
1 2 (11.11%) Disclosure Scotland
System Software
1 1 (5.56%) Apache Flume
Systems Management
1 1 (5.56%) Kibana
Vendors
1 1 (5.56%) Apple
1 1 (5.56%) Cloudera