The table below looks at the statistics for TDD skills in IT contracts advertised for the Slough region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 22 January 2017 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
22 Jan 2017
Same period 2016 Same period 2015
Test-Driven Development (TDD)
Berkshire / Slough
Rank 15 27 12
Rank change year-on-year
+12 -15
Contract jobs citing TDD 6 4 25
As % of all contract IT jobs located in Slough 5.41% 1.67% 8.45%
As % of the Processes & Methodologies category 6.90% 2.06% 10.87%
Number of daily rates quoted 4 2 16
Median daily rate £315 £288 £317
Median daily rate % change year-on-year
+9.47% -9.16%
90% offered a daily rate of more than £268 £218 £307
10% offered a daily rate of more than £332 £358 £506
UK excluding London median daily rate £418 £388 £375
% change year-on-year
+7.74% +3.33%
Number of hourly rates quoted 0 1 0
Median hourly rate - £175.00 -
UK excluding London median hourly rate £36.51 £38.00 £38.25
% change year-on-year
-3.92% -0.65%

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

Processes & Methodologies Category
Slough
Contract IT job ads with a match in the
Processes & Methodologies category
87 194 230
As % of all contract IT jobs located in Slough 78.38% 81.17% 77.70%
Number of daily rates quoted 66 115 136
Median daily rate £400 £390 £350
Median daily rate % change year-on-year
+2.56% +11.42%
90% offered a daily rate of more than £180 £280 £266
10% offered a daily rate of more than £500 £488 £500
UK excluding London median daily rate £405 £400 £393
% change year-on-year
+1.25% +1.91%
Number of hourly rates quoted 3 7 3
Median hourly rate £41.00 £42.50 £32.50
Median hourly rate % change year-on-year
-3.52% +30.76%
UK excluding London median hourly rate £35.00 £40.00 £26.00
% change year-on-year
-12.50% +53.84%

TDD
Jobs Demand Trend in Slough

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

TDD Jobs Demand Trend in Slough

TDD
Daily Rate Trend in Slough

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

TDD Daily Rate Trend in Slough

TDD
Top 30 Related IT Skills in Slough

For the 6 months to 22 January 2017, 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 Slough region with a requirement for TDD.

1 13 (100.00%) Agile Software Development
2 10 (76.92%) Continuous Integration
3 9 (69.23%) Extreme Programming
3 9 (69.23%) Subversion
3 9 (69.23%) JIRA
3 9 (69.23%) E-Commerce
3 9 (69.23%) HTML
3 9 (69.23%) Java
3 9 (69.23%) JavaScript
3 9 (69.23%) XML
3 9 (69.23%) Tomcat
3 9 (69.23%) Open Source
3 9 (69.23%) MongoDB
3 9 (69.23%) Jenkins
3 9 (69.23%) Web Application Development
3 9 (69.23%) GitHub
4 8 (61.54%) Functional Testing
4 8 (61.54%) Gradle
4 8 (61.54%) Servlets
4 8 (61.54%) MVC
4 8 (61.54%) Pair Programming
4 8 (61.54%) Spring
4 8 (61.54%) Velocity
4 8 (61.54%) Groovy
4 8 (61.54%) Scala
5 7 (53.85%) Quality Management
5 7 (53.85%) J2EE
6 5 (38.46%) Struts
6 5 (38.46%) XHTML
6 5 (38.46%) XSLT

TDD
Top Related IT Skills in Slough 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 9 (69.23%) Tomcat
2 5 (38.46%) Alfresco
2 5 (38.46%) Apache
2 5 (38.46%) Liferay
Cloud Services
1 9 (69.23%) GitHub
Communications & Networking
1 1 (7.69%) Extranet
1 1 (7.69%) Intranet
Database & Business Intelligence
1 9 (69.23%) MongoDB
2 2 (15.38%) SQL Server
2 2 (15.38%) SQL Server 2012
3 1 (7.69%) SQL Server 2008
3 1 (7.69%) SQL Server Analysis Services
3 1 (7.69%) SQL Server Integration Services
3 1 (7.69%) SQL Server Reporting Services
Development Applications
1 9 (69.23%) Jenkins
1 9 (69.23%) JIRA
1 9 (69.23%) Subversion
2 8 (61.54%) Gradle
3 5 (38.46%) Eclipse
3 5 (38.46%) IntelliJ
4 1 (7.69%) JIRA Agile
4 1 (7.69%) Moq
4 1 (7.69%) Octopus Deploy
4 1 (7.69%) ReSharper
4 1 (7.69%) TeamCity
General
1 1 (7.69%) Marketing
Job Titles
1 12 (92.31%) Developer
2 9 (69.23%) Java Developer
3 5 (38.46%) Agile Developer
3 5 (38.46%) Agile Java Developer
4 2 (15.38%) .NET Developer
4 2 (15.38%) ASP.NET Developer
4 2 (15.38%) ASP.NET MVC Developer
4 2 (15.38%) C# Developer
5 1 (7.69%) C# .NET Developer
5 1 (7.69%) C# ASP.NET Developer
5 1 (7.69%) C# Software Developer
5 1 (7.69%) Scrum Master
5 1 (7.69%) Software Developer
5 1 (7.69%) SQL Developer
5 1 (7.69%) T-SQL Developer
Libraries, Frameworks & Software Standards
1 9 (69.23%) HTML
1 9 (69.23%) XML
2 8 (61.54%) Servlets
2 8 (61.54%) Spring
2 8 (61.54%) Velocity
3 7 (53.85%) J2EE
4 5 (38.46%) JSR 168
4 5 (38.46%) Struts
4 5 (38.46%) XHTML
4 5 (38.46%) XSLT
5 4 (30.77%) REST
6 3 (23.08%) .NET
6 3 (23.08%) ASP.NET
6 3 (23.08%) ASP.NET MVC
7 2 (15.38%) .NET Framework
7 2 (15.38%) AngularJS
7 2 (15.38%) Entity Framework
8 1 (7.69%) ASP.NET Web API
8 1 (7.69%) ASP.NET Web Forms
8 1 (7.69%) AutoMapper
Miscellaneous
1 1 (7.69%) Mobile App
Operating Systems
1 5 (38.46%) Solaris
2 2 (15.38%) Android
3 1 (7.69%) Apple iOS
Processes & Methodologies
1 13 (100.00%) Agile Software Development
2 10 (76.92%) Continuous Integration
3 9 (69.23%) E-Commerce
3 9 (69.23%) Extreme Programming
3 9 (69.23%) Open Source
3 9 (69.23%) Web Application Development
4 8 (61.54%) Functional Testing
4 8 (61.54%) MVC
4 8 (61.54%) Pair Programming
5 7 (53.85%) Quality Management
6 4 (30.77%) Microservices
6 4 (30.77%) Scrum
7 2 (15.38%) Kanban
8 1 (7.69%) Android Development
8 1 (7.69%) Continuous Improvement
8 1 (7.69%) Dependency Injection
8 1 (7.69%) Mobile Application Development
8 1 (7.69%) Refactoring
8 1 (7.69%) Software Engineering
8 1 (7.69%) SOLID
Programming Languages
1 9 (69.23%) Java
1 9 (69.23%) JavaScript
2 8 (61.54%) Groovy
2 8 (61.54%) Scala
3 3 (23.08%) C#
4 1 (7.69%) SQL
4 1 (7.69%) T-SQL
Qualifications
1 1 (7.69%) Degree
Vendors
1 5 (38.46%) GigaSpaces
2 1 (7.69%) Apple