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 29 August 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
29 Aug 2014
Same period 2013 Same period 2012
Test-Driven Development (TDD)
Rank 48 41 40
Rank change year-on-year
-7 -1
Contract jobs citing TDD 23 15 38
As % of all contract IT jobs located in Hertfordshire 2.90% 2.87% 4.03%
As % of the Processes & Methodologies category 3.74% 3.94% 5.67%
Number of daily rates quoted 19 14 28
Average daily rate
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of your Daily Rate
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£400 £413 £413
Average daily rate % change year-on-year
-3.03% -
90% offered a daily rate of more than £373 £375 £282
10% offered a daily rate of more than £455 £500 £441
UK excluding London average daily rate £375 £350 £325
% change year-on-year
+7.14% +7.69%
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average hourly rate £71.00 £32.50 £37.50
% change year-on-year
+118.46% -13.33%
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
615 381 670
As % of all contract IT jobs located in Hertfordshire 77.46% 72.85% 70.97%
Number of daily rates quoted 345 187 342
Average daily rate £400 £400 £375
Average daily rate % change year-on-year
- +6.66%
90% offered a daily rate of more than £233 £238 £250
10% offered a daily rate of more than £513 £538 £450
UK excluding London average daily rate £375 £370 £360
% change year-on-year
+1.35% +2.77%
Number of hourly rates quoted 26 24 35
Average hourly rate £15.00 £37.50 £25.25
Average hourly rate % change year-on-year
-60.00% +48.51%
90% offered a hourly rate of more than £10.00 £10.50 £13.84
10% offered a hourly rate of more than £37.50 £50.00 £37.50
UK excluding London average hourly rate £25.50 £30.00 £31.00
% change year-on-year
-15.00% -3.22%

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 29 August 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 29 August 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
Borehamwood - - - -
Hemel Hempstead - - - - 1
Hitchin - - - -
Letchworth - - - -
Rickmansworth - - - - 1
St Albans - - - - 3
Stevenage - - - - 1
TDD
East of England

TDD
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 29 August 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 21 (56.76%) BDD
2 18 (48.65%) Scrum
3 17 (45.95%) HTML
3 17 (45.95%) JavaScript
4 16 (43.24%) CSS
5 15 (40.54%) MVC
6 14 (37.84%) Subversion
6 14 (37.84%) Marketing
7 13 (35.14%) Unit Testing
7 13 (35.14%) .NET
8 12 (32.43%) Git (software)
9 11 (29.73%) Ajax
9 11 (29.73%) Agile Software Development
9 11 (29.73%) Ant
9 11 (29.73%) Linux
9 11 (29.73%) Apache
9 11 (29.73%) REST
10 10 (27.03%) Web Services
10 10 (27.03%) XML
10 10 (27.03%) Java
10 10 (27.03%) SQL
10 10 (27.03%) Selenium
11 9 (24.32%) Continuous Integration
11 9 (24.32%) Spring
11 9 (24.32%) E-Commerce
11 9 (24.32%) OO
11 9 (24.32%) NoSQL
12 8 (21.62%) Finance
12 8 (21.62%) C#
12 8 (21.62%) SOAP

TDD
Top Related IT Skills in Hertfordshire by Category

For the 6 months to 29 August 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 11 (29.73%) Apache
2 7 (18.92%) CMS
2 7 (18.92%) Tomcat
3 4 (10.81%) Node.js
3 4 (10.81%) lighttpd
4 2 (5.41%) WebLogic
4 2 (5.41%) WebLogic Portal
5 1 (2.70%) IIS
Applications
1 1 (2.70%) Photoshop
Communications & Networking
1 5 (13.51%) Internet
2 1 (2.70%) TCP/IP
Database & Business Intelligence
1 9 (24.32%) NoSQL
2 7 (18.92%) MySQL
3 6 (16.22%) Relational Database
3 6 (16.22%) RDBMS
4 3 (8.11%) SQL Server
4 3 (8.11%) Couchbase
5 2 (5.41%) Oracle Database
5 2 (5.41%) Oracle Database 10g
6 1 (2.70%) SQL Server 2008
6 1 (2.70%) SQL Server Integration Services
6 1 (2.70%) SQL Server Reporting Services
6 1 (2.70%) MongoDB
Development Applications
1 14 (37.84%) Subversion
2 12 (32.43%) Git (software)
3 11 (29.73%) Ant
4 10 (27.03%) Selenium
5 7 (18.92%) Maven
5 7 (18.92%) Eclipse
5 7 (18.92%) Jenkins
6 6 (16.22%) Mockito
6 6 (16.22%) IntelliJ
6 6 (16.22%) JUnit
7 4 (10.81%) Capybara
7 4 (10.81%) Grunt
7 4 (10.81%) TeamCity
7 4 (10.81%) Cucumber
7 4 (10.81%) Hudson
7 4 (10.81%) WATIR
7 4 (10.81%) RSpec
8 3 (8.11%) Team Foundation Server
8 3 (8.11%) JIRA
8 3 (8.11%) Jasmine
General
1 14 (37.84%) Marketing
2 8 (21.62%) Finance
3 3 (8.11%) Retail
4 1 (2.70%) Banking
4 1 (2.70%) Advertising
4 1 (2.70%) Telecoms
Job Titles
1 30 (81.08%) Developer
2 9 (24.32%) Senior Developer
3 8 (21.62%) Java Developer
4 6 (16.22%) Front-End Developer
4 6 (16.22%) Senior Front-End Developer
5 5 (13.51%) .NET Developer
5 5 (13.51%) Lead Developer
6 3 (8.11%) C# Developer
6 3 (8.11%) C# .NET Developer
7 2 (5.41%) ASP.NET Developer
7 2 (5.41%) Senior Java Developer
7 2 (5.41%) C# ASP.NET Developer
7 2 (5.41%) Portal Developer
7 2 (5.41%) Silverlight Developer
8 1 (2.70%) CRM Analyst
8 1 (2.70%) Designer
8 1 (2.70%) Senior Java/J2EE Developer
8 1 (2.70%) Java/J2EE Developer
8 1 (2.70%) CRM Business Analyst
8 1 (2.70%) Lead Java Developer
Libraries, Frameworks & Software Standards
1 17 (45.95%) HTML
2 16 (43.24%) CSS
3 13 (35.14%) .NET
4 11 (29.73%) Ajax
4 11 (29.73%) REST
5 10 (27.03%) Web Services
5 10 (27.03%) XML
6 9 (24.32%) Spring
7 8 (21.62%) SOAP
7 8 (21.62%) ASP.NET
7 8 (21.62%) HTML5
8 7 (18.92%) JSP
8 7 (18.92%) CSS3
9 6 (16.22%) JDBC
9 6 (16.22%) JSON
9 6 (16.22%) ASP.NET MVC
10 5 (13.51%) jQuery
10 5 (13.51%) WCF
11 3 (8.11%) .NET Framework
12 2 (5.41%) AngularJS
Miscellaneous
1 4 (10.81%) Open Source
2 1 (2.70%) PKI
2 1 (2.70%) Smartphone
2 1 (2.70%) Enterprise Software
Operating Systems
1 11 (29.73%) Linux
2 7 (18.92%) UNIX
3 1 (2.70%) Windows
Processes & Methodologies
1 21 (56.76%) BDD
2 18 (48.65%) Scrum
3 15 (40.54%) MVC
4 13 (35.14%) Unit Testing
5 11 (29.73%) Agile Software Development
6 9 (24.32%) Continuous Integration
6 9 (24.32%) E-Commerce
6 9 (24.32%) OO
7 7 (18.92%) Waterfall
8 6 (16.22%) Performance Testing
9 5 (13.51%) Responsive Web Design
10 4 (10.81%) Web Design
10 4 (10.81%) Web Development
11 3 (8.11%) Automated Testing
11 3 (8.11%) SOA
12 2 (5.41%) SEO
12 2 (5.41%) MVVM
13 1 (2.70%) Multithreading
13 1 (2.70%) Business Analysis
13 1 (2.70%) Regression Testing
Programming Languages
1 17 (45.95%) JavaScript
2 10 (27.03%) Java
2 10 (27.03%) SQL
3 8 (21.62%) C#
4 5 (13.51%) Ruby
5 2 (5.41%) PL/SQL
6 1 (2.70%) T-SQL
6 1 (2.70%) VBScript
6 1 (2.70%) PHP
6 1 (2.70%) Clojure
Qualifications
1 1 (2.70%) ISEB
Quality Assurance & Compliance
1 3 (8.11%) QA
Systems Management
1 1 (2.70%) Opscode Chef
Vendors
1 3 (8.11%) Oracle
2 1 (2.70%) BEA
2 1 (2.70%) Adobe
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