The following table provides summary statistics for contract job vacancies advertised in Cardiff with a requirement for Open Source skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Open Source over the 3 months to 29 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.

Open Source
South Wales > Cardiff
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 41 28 40
Rank change year-on-year -13 +12  
Contract jobs citing Open Source 2 10 3
As % of all contract IT jobs advertised in Cardiff 0.61% 3.60% 0.90%
As % of the Processes & Methodologies category 0.69% 4.63% 1.09%
Number of daily rates quoted 2 10 3
Cardiff median daily rate £338 £475 £375
Median daily rate % change year-on-year -28.94% +26.66%  
10th Percentile £314 £325 £353
90th Percentile £371 £575 £428
South Wales median daily rate £350 £475 £375
% change year-on-year -26.31% +26.66%  
Number of hourly rates quoted 0 0 0
Cardiff median hourly rate - - -
South Wales median hourly rate - - -

Open Source is in the process and methodology 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 process and methodology skills.

Contract Process & Methodology Skills
Cardiff
Contract job vacancies with a requirement for process and methodology skills 288 216 275
As % of all contract IT job vacancies advertised in Cardiff 87.27% 77.70% 82.09%
Number of daily rates quoted 933 647 699
Cardiff median daily rate £360 £388 £350
Median daily rate % change year-on-year -7.09% +10.71%  
10th Percentile £264 £248 £228
90th Percentile £524 £525 £455
South Wales median daily rate £375 £390 £356
% change year-on-year -3.84% +9.55%  
Number of hourly rates quoted 48 11 18
Cardiff median hourly rate £16.28 £13.50 £15.75
Median hourly rate % change year-on-year +20.59% -14.28%  
10th Percentile £12.93 £12.75 £11.64
90th Percentile £52.50 £37.50 £23.05
South Wales median hourly rate £36.50 £35.00 £15.25
% change year-on-year +4.28% +129.50%  

Open Source
Job Vacancy Trend in Cardiff

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

Job vacancy trend for Open Source in Cardiff

Open Source
Contractor Daily Rate Trend in Cardiff

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

Contractor daily rate trend for Open Source in Cardiff

For the 6 months to 29 June 2017, IT contractor jobs citing Open Source 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 Open Source.

1 5 (71.43%) Java
1 5 (71.43%) Linux
2 4 (57.14%) Agile Software Development
2 4 (57.14%) Apache
2 4 (57.14%) Git (software)
2 4 (57.14%) Amazon AWS
2 4 (57.14%) Ansible
2 4 (57.14%) DevOps
2 4 (57.14%) Terraform
3 3 (42.86%) Mesos
3 3 (42.86%) Rundeck
3 3 (42.86%) Google Cloud Platform
3 3 (42.86%) Jenkins
3 3 (42.86%) Puppet
3 3 (42.86%) Travis CI
3 3 (42.86%) Marathon
3 3 (42.86%) Mongrel
3 3 (42.86%) Amazon EC2
3 3 (42.86%) Amazon S3
3 3 (42.86%) Google App Engine
3 3 (42.86%) nginx
3 3 (42.86%) VMware Infrastructure
3 3 (42.86%) Tomcat
3 3 (42.86%) Google
3 3 (42.86%) WebSphere
3 3 (42.86%) Xen
3 3 (42.86%) Continuous Integration
3 3 (42.86%) Jetty
3 3 (42.86%) Configuration Management
3 3 (42.86%) DSL

Open Source
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 4 (57.14%) Apache
2 3 (42.86%) IIS
2 3 (42.86%) Jetty
2 3 (42.86%) Mongrel
2 3 (42.86%) nginx
2 3 (42.86%) Tomcat
2 3 (42.86%) WebSphere
3 1 (14.29%) Apache Spark
3 1 (14.29%) Elasticsearch
3 1 (14.29%) Oracle HTTP Server
3 1 (14.29%) WebLogic
Cloud Services
1 4 (57.14%) Amazon AWS
2 3 (42.86%) Amazon EC2
2 3 (42.86%) Amazon S3
2 3 (42.86%) Google App Engine
2 3 (42.86%) Google Cloud Platform
3 1 (14.29%) Amazon CloudWatch
3 1 (14.29%) Amazon ElastiCache
3 1 (14.29%) Amazon ELB
3 1 (14.29%) AWS CloudFormation
3 1 (14.29%) Route 53
3 1 (14.29%) Virtual Private Cloud
Communications & Networking
1 3 (42.86%) DHCP
1 3 (42.86%) DNS
1 3 (42.86%) DSL
1 3 (42.86%) FTP
1 3 (42.86%) HTTP
1 3 (42.86%) IPsec
1 3 (42.86%) SSL
1 3 (42.86%) TCP/IP
Database & Business Intelligence
1 1 (14.29%) Amazon DynamoDB
1 1 (14.29%) Big Data
1 1 (14.29%) Hadoop
1 1 (14.29%) HBase
1 1 (14.29%) MongoDB
1 1 (14.29%) PostgreSQL
1 1 (14.29%) SQL Server
1 1 (14.29%) SQL Server 2008
1 1 (14.29%) SQL Server 2012
1 1 (14.29%) SQL Server 2014
1 1 (14.29%) SQL Server Integration Services
1 1 (14.29%) SQL Server Reporting Services
Development Applications
1 4 (57.14%) Git (software)
2 3 (42.86%) Jenkins
2 3 (42.86%) Travis CI
3 2 (28.57%) Cucumber
3 2 (28.57%) Selenium
4 1 (14.29%) Bitbucket
4 1 (14.29%) WebDriver
Job Titles
1 1 (14.29%) Agile Tester
1 1 (14.29%) Automation Tester
1 1 (14.29%) Cloud Engineer
1 1 (14.29%) DBA
1 1 (14.29%) DevOps Engineer
1 1 (14.29%) Java Engineer
1 1 (14.29%) Lead Tester
1 1 (14.29%) QA Automation Tester
1 1 (14.29%) QA Leader
1 1 (14.29%) QA Tester
1 1 (14.29%) Senior Java Engineer
1 1 (14.29%) Senior Test Engineer
1 1 (14.29%) SQL DBA
1 1 (14.29%) Test Engineer
1 1 (14.29%) Tester
Libraries, Frameworks & Software Standards
1 3 (42.86%) .NET
1 3 (42.86%) J2EE
1 3 (42.86%) Servlets
2 2 (28.57%) Kafka
3 1 (14.29%) .NET Framework
3 1 (14.29%) Gherkin
3 1 (14.29%) Hibernate
3 1 (14.29%) Java EE
3 1 (14.29%) JSON
3 1 (14.29%) Middleware
3 1 (14.29%) Spring
3 1 (14.29%) Spring MVC
3 1 (14.29%) Web Services
Miscellaneous
1 1 (14.29%) Analytical Skills
1 1 (14.29%) Cyberthreat
1 1 (14.29%) Greenfield Project
Operating Systems
1 5 (71.43%) Linux
2 1 (14.29%) Windows
Processes & Methodologies
1 4 (57.14%) Agile Software Development
1 4 (57.14%) DevOps
2 3 (42.86%) Configuration Management
2 3 (42.86%) Continuous Integration
3 2 (28.57%) ETL
3 2 (28.57%) Mentoring
3 2 (28.57%) Microservices
3 2 (28.57%) Performance Tuning
3 2 (28.57%) TDD
3 2 (28.57%) Test Automation
4 1 (14.29%) Dashboard Development
4 1 (14.29%) Data Integration
4 1 (14.29%) Digital Transformation Programme
4 1 (14.29%) High Availability
4 1 (14.29%) OO
4 1 (14.29%) Process Improvement
4 1 (14.29%) QA Automation
4 1 (14.29%) Root Cause Analysis
4 1 (14.29%) Software Engineering
4 1 (14.29%) Software Testing
Programming Languages
1 5 (71.43%) Java
2 3 (42.86%) SQL
3 1 (14.29%) JavaScript
3 1 (14.29%) Perl
3 1 (14.29%) Python
Qualifications
1 2 (28.57%) SC Cleared
1 2 (28.57%) Security Cleared
Quality Assurance & Compliance
1 1 (14.29%) QA
System Software
1 3 (42.86%) VMware Infrastructure
1 3 (42.86%) Xen
Systems Management
1 4 (57.14%) Ansible
1 4 (57.14%) Terraform
2 3 (42.86%) Marathon
2 3 (42.86%) Mesos
2 3 (42.86%) Puppet
2 3 (42.86%) Rundeck
3 1 (14.29%) Fluentd
3 1 (14.29%) Grafana
3 1 (14.29%) Kibana
3 1 (14.29%) Prometheus
Vendors
1 3 (42.86%) Google
1 3 (42.86%) Microsoft
1 3 (42.86%) VMware
2 1 (14.29%) Oracle