The table below looks at the statistics for TDD skills in IT contracts advertised for the Chester region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 29 July 2016 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
29 Jul 2016
Same period 2015 Same period 2014
Test-Driven Development (TDD)
Rank 23 25 17
Rank change year-on-year
+2 -8
Contract jobs citing TDD 14 5 5
As % of all contract IT jobs located in Chester 7.53% 2.89% 3.68%
As % of the Processes & Methodologies category 9.52% 3.29% 4.39%
Number of daily rates quoted 11 3 1
Median daily rate £390 £350 £400
Median daily rate % change year-on-year
+11.42% -12.50%
UK excluding London median daily rate £425 £375 £375
% change year-on-year
+13.33% -
Number of hourly rates quoted 0 0 1
Median hourly rate - - £30.00
UK excluding London median hourly rate £40.00 £40.00 £59.50
% change year-on-year
- -32.77%
TDD
Cheshire

The following table is for comparison with the above and provides statistics for the entire Processes & Methodologies category in contract jobs advertised in the Chester region.

Processes & Methodologies Category
Chester
Contract IT job ads with a match in the
Processes & Methodologies category
147 152 114
As % of all contract IT jobs located in Chester 79.03% 87.86% 83.82%
Number of daily rates quoted 133 80 43
Median daily rate £425 £370 £320
Median daily rate % change year-on-year
+14.86% +15.62%
90% offered a daily rate of more than £319 £300 £234
10% offered a daily rate of more than £500 £438 £405
UK excluding London median daily rate £400 £388 £375
% change year-on-year
+3.22% +3.33%
Number of hourly rates quoted 1 11 13
Median hourly rate £20.78 £34.50 £35.00
Median hourly rate % change year-on-year
-39.76% -1.42%
UK excluding London median hourly rate £30.00 £30.00 £27.00
% change year-on-year
- +11.11%

TDD
Jobs Demand Trend in Chester

The demand trend of contract jobs across the Chester region citing TDD as a proportion of all IT contracts with a match in the Processes & Methodologies category.

TDD Jobs Demand Trend in Chester

TDD
Daily Rate Trend in Chester

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing TDD across the Chester region.

TDD Daily Rate Trend in Chester

TDD
Daily Rate Histogram in Chester

This chart provides a histogram of daily rates quoted in contract IT jobs citing TDD across the Chester region over the 3 months to 29 July 2016.

TDD Daily Rate Histogram in Chester

TDD
Top 30 Related IT Skills in Chester

For the 6 months to 29 July 2016, IT contractor jobs citing TDD 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 Chester region with a requirement for TDD.

1 24 (82.76%) Java
2 20 (68.97%) Agile Software Development
3 18 (62.07%) XML
4 17 (58.62%) SQL
5 16 (55.17%) Oracle
6 14 (48.28%) Finance
6 14 (48.28%) Continuous Integration
7 13 (44.83%) J2EE
8 12 (41.38%) XSLT
8 12 (41.38%) Spring
8 12 (41.38%) JIRA
8 12 (41.38%) Selenium
9 11 (37.93%) Integration Testing
9 11 (37.93%) Software Engineering
9 11 (37.93%) WebSphere
9 11 (37.93%) IBM
9 11 (37.93%) JDBC
9 11 (37.93%) PL/SQL
9 11 (37.93%) Jenkins
9 11 (37.93%) System Integration Testing
10 10 (34.48%) JUnit
11 9 (31.03%) JavaScript
11 9 (31.03%) E-Commerce
11 9 (31.03%) Subversion
11 9 (31.03%) User Acceptance Testing
11 9 (31.03%) Kanban
11 9 (31.03%) Waterfall
11 9 (31.03%) Oracle Database
12 8 (27.59%) Apache Camel
12 8 (27.59%) POJO

TDD
Top Related IT Skills in Chester 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 11 (37.93%) WebSphere
2 8 (27.59%) WebSphere Application Server
3 3 (10.34%) IBM HTTP Server
3 3 (10.34%) Oracle HTTP Server
3 3 (10.34%) Tomcat
4 1 (3.45%) JBoss
Cloud Services
1 2 (6.90%) Amazon AWS
Communications & Networking
1 4 (13.79%) Internet
2 3 (10.34%) HTTP
3 1 (3.45%) Network Security
Database & Business Intelligence
1 9 (31.03%) Oracle Database
2 4 (13.79%) MongoDB
2 4 (13.79%) SQL Server
3 2 (6.90%) MySQL
3 2 (6.90%) Redis
4 1 (3.45%) Apache Cassandra
4 1 (3.45%) NoSQL
4 1 (3.45%) Relational Database
Development Applications
1 12 (41.38%) JIRA
1 12 (41.38%) Selenium
2 11 (37.93%) Jenkins
3 10 (34.48%) JUnit
4 9 (31.03%) Subversion
5 6 (20.69%) Maven
6 5 (17.24%) Cucumber
7 3 (10.34%) Checkstyle
7 3 (10.34%) FindBugs
7 3 (10.34%) Git (software)
7 3 (10.34%) Mockito
7 3 (10.34%) SonarQube
8 1 (3.45%) Ant
8 1 (3.45%) Gradle
8 1 (3.45%) Jasmine
8 1 (3.45%) PHPUnit
8 1 (3.45%) QUnit
General
1 14 (48.28%) Finance
2 5 (17.24%) Banking
3 1 (3.45%) Investment Banking
Job Titles
1 22 (75.86%) Developer
2 14 (48.28%) Java Developer
3 10 (34.48%) Senior Developer
4 6 (20.69%) SQL Developer
5 5 (17.24%) Senior Java Developer
5 5 (17.24%) Senior SQL Developer
6 4 (13.79%) .NET Developer
6 4 (13.79%) Architect
6 4 (13.79%) ASP.NET MVC Developer
6 4 (13.79%) C# .NET Developer
6 4 (13.79%) C# Developer
6 4 (13.79%) J2EE Developer
6 4 (13.79%) Java/J2EE Developer
6 4 (13.79%) Senior .NET Developer
6 4 (13.79%) Senior C# .NET Developer
6 4 (13.79%) Senior C# Developer
6 4 (13.79%) Senior SQL Server Developer
6 4 (13.79%) SQL Server Developer
7 3 (10.34%) Technical Architect
7 3 (10.34%) XML Developer
Libraries, Frameworks & Software Standards
1 18 (62.07%) XML
2 13 (44.83%) J2EE
3 12 (41.38%) Spring
3 12 (41.38%) XSLT
4 11 (37.93%) JDBC
5 8 (27.59%) Apache Camel
5 8 (27.59%) CSS
5 8 (27.59%) JAXB
5 8 (27.59%) JAX-WS
5 8 (27.59%) POJO
5 8 (27.59%) SOAP
5 8 (27.59%) Web Services
5 8 (27.59%) WSDL
6 7 (24.14%) HTML
7 5 (17.24%) jQuery
8 4 (13.79%) .NET
8 4 (13.79%) JSON
8 4 (13.79%) JSP
8 4 (13.79%) Servlets
8 4 (13.79%) WCF
Miscellaneous
1 3 (10.34%) N-Tier
1 3 (10.34%) Online Banking
2 1 (3.45%) Analytical Skills
2 1 (3.45%) Digital Media
2 1 (3.45%) Foreign Exchange (FX)
2 1 (3.45%) User Experience
2 1 (3.45%) Wiki
Processes & Methodologies
1 20 (68.97%) Agile Software Development
2 14 (48.28%) Continuous Integration
3 11 (37.93%) Integration Testing
3 11 (37.93%) Software Engineering
3 11 (37.93%) System Integration Testing
4 9 (31.03%) E-Commerce
4 9 (31.03%) Kanban
4 9 (31.03%) User Acceptance Testing
4 9 (31.03%) Waterfall
5 8 (27.59%) AOP
5 8 (27.59%) Extreme Programming
5 8 (27.59%) MVC
6 4 (13.79%) Front End Development
7 3 (10.34%) OO
7 3 (10.34%) OOP
7 3 (10.34%) Scrum
7 3 (10.34%) SDLC
7 3 (10.34%) Web Application Development
7 3 (10.34%) Web Development
8 2 (6.90%) Data Modelling
Programming Languages
1 24 (82.76%) Java
2 17 (58.62%) SQL
3 11 (37.93%) PL/SQL
4 9 (31.03%) JavaScript
5 5 (17.24%) C#
6 2 (6.90%) PHP
7 1 (3.45%) T-SQL
Qualifications
1 4 (13.79%) Degree
Quality Assurance & Compliance
1 1 (3.45%) QA
Vendors
1 16 (55.17%) Oracle
2 11 (37.93%) IBM
3 3 (10.34%) Perforce