The table below looks at the statistics for TDD skills in IT contracts advertised for the Hertfordshire region. Included is a guide to the average contractor rates offered in IT contracts that have cited TDD over the 3 months to 22 September 2014 with a comparison to the same period in 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.

Location
3 months to
22 Sep 2014
Same period 2013 Same period 2012
Test-Driven Development (TDD)
Rank 44 38 32
Rank change year-on-year
-6 -6
Contract jobs citing TDD 35 13 53
As % of all contract IT jobs located in Hertfordshire 4.13% 2.64% 5.40%
As % of the Processes & Methodologies category 5.38% 3.62% 7.51%
Number of daily rates quoted 29 13 43
Average daily rate
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of your Daily Rate
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£400 £400 £388
Average daily rate % change year-on-year
- +3.22%
90% offered a daily rate of more than £375 £343 £298
10% offered a daily rate of more than £459 £500 £448
UK excluding London average daily rate £375 £350 £338
% change year-on-year
+7.14% +3.70%
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average hourly rate £36.25 £32.50 £33.50
% change year-on-year
+11.53% -2.98%
TDD
East of England

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

Processes & Methodologies Category
Hertfordshire
Contract IT job ads with a match in the
Processes & Methodologies category
651 359 706
As % of all contract IT jobs located in Hertfordshire 76.77% 72.82% 71.89%
Number of daily rates quoted 390 164 343
Average daily rate £400 £400 £375
Average daily rate % change year-on-year
- +6.66%
90% offered a daily rate of more than £225 £255 £260
10% offered a daily rate of more than £516 £500 £450
UK excluding London average daily rate £375 £368 £363
% change year-on-year
+2.04% +1.37%
Number of hourly rates quoted 22 26 38
Average hourly rate £15.00 £46.00 £27.25
Average hourly rate % change year-on-year
-67.39% +68.80%
90% offered a hourly rate of more than £11.00 £10.50 £11.15
10% offered a hourly rate of more than £36.00 £50.00 £37.50
UK excluding London average hourly rate £26.00 £30.00 £30.00
% change year-on-year
-13.33% -

TDD
Jobs Demand Trend in Hertfordshire

This chart provides a 3-month moving total of IT contractor jobs citing TDD across the Hertfordshire region as a proportion of the total demand within the Processes & Methodologies category.

TDD Jobs Demand Trend in Hertfordshire

TDD
Daily Rate Trend in Hertfordshire

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

TDD Daily Rate Trend in Hertfordshire

TDD
Daily Rate Histogram in Hertfordshire

This chart provides a histogram of daily rates quoted in contract IT jobs citing TDD across the Hertfordshire region over the 3 months to 22 September 2014.

TDD Daily Rate Histogram in Hertfordshire

TDD
Hourly Rate Trend in Hertfordshire

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing TDD across the Hertfordshire region.

TDD Hourly Rate Trend in Hertfordshire

TDD
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the average contractor rates quoted in IT jobs citing TDD within the Hertfordshire region over the 3 months to 22 September 2014. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Average
Daily Rate
Last 3 Months
Average Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Welwyn Garden City -1 4 £550 -12.00% 1
Borehamwood - - - -
Hemel Hempstead - - - - 2
Hertford - - - - 1
Hitchin - - - -
Letchworth - - - -
Rickmansworth - - - - 1
St Albans - - - - 4
Stevenage - - - -
TDD
East of England

TDD
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 22 September 2014, IT contractor jobs across the Hertfordshire region citing TDD also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited TDD.

1 45 (97.83%) Agile Software Development
2 31 (67.39%) BDD
3 23 (50.00%) Scrum
3 23 (50.00%) JavaScript
4 22 (47.83%) CSS
5 21 (45.65%) HTML
6 19 (41.30%) .NET
7 18 (39.13%) MVC
8 17 (36.96%) Subversion
8 17 (36.96%) Marketing
9 15 (32.61%) Unit Testing
9 15 (32.61%) Git (software)
10 14 (30.43%) Ajax
10 14 (30.43%) SQL
10 14 (30.43%) Linux
11 13 (28.26%) Web Services
11 13 (28.26%) XML
11 13 (28.26%) Ant
11 13 (28.26%) OO
11 13 (28.26%) Apache
11 13 (28.26%) Continuous Integration
11 13 (28.26%) Selenium
11 13 (28.26%) REST
12 12 (26.09%) C#
12 12 (26.09%) ASP.NET
13 10 (21.74%) Java
13 10 (21.74%) HTML5
13 10 (21.74%) Spring
13 10 (21.74%) Jenkins
14 9 (19.57%) CSS3

TDD
Top Related IT Skills in Hertfordshire by Category

For the 6 months to 22 September 2014, IT contractor jobs across the Hertfordshire region citing TDD also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited TDD. Up to 20 skills are shown per category.

Application Platforms
1 13 (28.26%) Apache
2 8 (17.39%) Tomcat
3 7 (15.22%) CMS
4 5 (10.87%) lighttpd
4 5 (10.87%) Node.js
5 3 (6.52%) IIS
6 2 (4.35%) WebLogic
6 2 (4.35%) WebLogic Portal
Applications
1 1 (2.17%) Photoshop
Communications & Networking
1 5 (10.87%) Internet
2 3 (6.52%) TCP/IP
Database & Business Intelligence
1 9 (19.57%) NoSQL
2 8 (17.39%) MySQL
3 7 (15.22%) RDBMS
3 7 (15.22%) Relational Database
4 4 (8.70%) Couchbase
5 3 (6.52%) SQL Server
6 2 (4.35%) Oracle Database
6 2 (4.35%) Oracle Database 10g
7 1 (2.17%) SQL Server Reporting Services
7 1 (2.17%) SQL Server Integration Services
7 1 (2.17%) SQL Server 2008
Development Applications
1 17 (36.96%) Subversion
2 15 (32.61%) Git (software)
3 13 (28.26%) Selenium
3 13 (28.26%) Ant
4 10 (21.74%) Jenkins
5 8 (17.39%) Eclipse
5 8 (17.39%) Maven
6 7 (15.22%) IntelliJ
6 7 (15.22%) JUnit
6 7 (15.22%) Mockito
7 6 (13.04%) Cucumber
7 6 (13.04%) Hudson
7 6 (13.04%) RSpec
7 6 (13.04%) Capybara
7 6 (13.04%) WATIR
7 6 (13.04%) TeamCity
8 5 (10.87%) JIRA
8 5 (10.87%) Grunt
9 4 (8.70%) Team Foundation Server
9 4 (8.70%) SpecFlow
General
1 17 (36.96%) Marketing
2 8 (17.39%) Finance
3 3 (6.52%) Retail
4 1 (2.17%) Advertising
Job Titles
1 39 (84.78%) Developer
2 11 (23.91%) Senior Developer
3 10 (21.74%) .NET Developer
4 9 (19.57%) Java Developer
5 8 (17.39%) Front-End Developer
6 7 (15.22%) Senior Front-End Developer
7 6 (13.04%) Lead Developer
8 5 (10.87%) C# Developer
8 5 (10.87%) C# .NET Developer
9 4 (8.70%) C# ASP.NET Developer
10 3 (6.52%) ASP.NET Developer
11 2 (4.35%) Senior Java Developer
11 2 (4.35%) Senior .NET Developer
11 2 (4.35%) Silverlight Developer
11 2 (4.35%) Test Engineer
11 2 (4.35%) Automation Engineer
12 1 (2.17%) Solutions Designer
12 1 (2.17%) Lead Designer
12 1 (2.17%) Designer
12 1 (2.17%) Lead .NET Developer
Libraries, Frameworks & Software Standards
1 22 (47.83%) CSS
2 21 (45.65%) HTML
3 19 (41.30%) .NET
4 14 (30.43%) Ajax
5 13 (28.26%) REST
5 13 (28.26%) Web Services
5 13 (28.26%) XML
6 12 (26.09%) ASP.NET
7 10 (21.74%) Spring
7 10 (21.74%) HTML5
8 9 (19.57%) CSS3
8 9 (19.57%) SOAP
9 8 (17.39%) JSP
9 8 (17.39%) ASP.NET MVC
9 8 (17.39%) WCF
10 7 (15.22%) JSON
10 7 (15.22%) JDBC
11 5 (10.87%) .NET Framework
11 5 (10.87%) jQuery
12 3 (6.52%) LINQ
Miscellaneous
1 8 (17.39%) User Experience
2 5 (10.87%) Analytical Skills
2 5 (10.87%) Open Source
3 1 (2.17%) Enterprise Software
3 1 (2.17%) PKI
3 1 (2.17%) Smartphone
Operating Systems
1 14 (30.43%) Linux
2 8 (17.39%) UNIX
3 1 (2.17%) Windows
Processes & Methodologies
1 45 (97.83%) Agile Software Development
2 31 (67.39%) BDD
3 23 (50.00%) Scrum
4 18 (39.13%) MVC
5 15 (32.61%) Unit Testing
6 13 (28.26%) Continuous Integration
6 13 (28.26%) OO
7 8 (17.39%) Performance Testing
8 7 (15.22%) E-Commerce
8 7 (15.22%) Waterfall
9 6 (13.04%) Responsive Web Design
9 6 (13.04%) Web Development
10 5 (10.87%) Web Design
11 4 (8.70%) Automated Testing
12 3 (6.52%) SOA
12 3 (6.52%) Code Coverage
12 3 (6.52%) Regression Testing
13 2 (4.35%) SEO
13 2 (4.35%) Data Modelling
13 2 (4.35%) MVVM
Programming Languages
1 23 (50.00%) JavaScript
2 14 (30.43%) SQL
3 12 (26.09%) C#
4 10 (21.74%) Java
5 7 (15.22%) Ruby
6 3 (6.52%) VBScript
7 2 (4.35%) PL/SQL
8 1 (2.17%) T-SQL
8 1 (2.17%) PHP
Quality Assurance & Compliance
1 5 (10.87%) QA
Vendors
1 4 (8.70%) Oracle
2 1 (2.17%) Adobe
2 1 (2.17%) BEA
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