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 30 March 2015 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
30 Mar 2015
Same period 2014 Same period 2013
Test-Driven Development (TDD)
Rank 55 57 20
Rank change year-on-year
+2 -37
Contract jobs citing TDD 8 16 50
As % of all contract IT jobs located in Hertfordshire 1.21% 2.09% 7.70%
As % of the Processes & Methodologies category 1.71% 2.84% 9.92%
Number of daily rates quoted 4 11 42
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£463 £413 £450
Average daily rate % change year-on-year
+12.12% -8.33%
90% offered a daily rate of more than £355 £375 £360
10% offered a daily rate of more than £500 £550 £650
UK excluding London average daily rate £375 £375 £350
% change year-on-year
- +7.14%
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average hourly rate £39.25 £40.00 £39.00
% change year-on-year
-1.87% +2.56%
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
468 564 504
As % of all contract IT jobs located in Hertfordshire 70.91% 73.82% 77.66%
Number of daily rates quoted 231 291 283
Average daily rate £413 £400 £400
Average daily rate % change year-on-year
+3.12% -
90% offered a daily rate of more than £265 £260 £275
10% offered a daily rate of more than £575 £504 £550
UK excluding London average daily rate £396 £375 £363
% change year-on-year
+5.60% +3.44%
Number of hourly rates quoted 28 30 13
Average hourly rate £16.50 £32.50 £14.00
Average hourly rate % change year-on-year
-49.23% +132.14%
90% offered a hourly rate of more than £10.60 £9.50 £11.00
10% offered a hourly rate of more than £36.50 £37.50 £24.90
UK excluding London average hourly rate £31.44 £27.50 £32.00
% change year-on-year
+14.32% -14.06%

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 30 March 2015.

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 30 March 2015. 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
Watford +9 5 £413 -31.39% 1
Welwyn Garden City - - - - 1
Hemel Hempstead - - - -
Hertford - - - -
Hitchin - - - -
Kings Langley - - - - 1
Letchworth - - - - 1
Potters Bar - - - -
Rickmansworth - - - -
St Albans - - - - 6
Stevenage - - - -
Waltham Cross - - - - 1
TDD
East of England

TDD
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 30 March 2015, 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 34 (91.89%) Agile Software Development
2 26 (70.27%) BDD
3 21 (56.76%) Scrum
4 17 (45.95%) HTML
4 17 (45.95%) JavaScript
4 17 (45.95%) REST
5 16 (43.24%) .NET
6 15 (40.54%) Java
6 15 (40.54%) CSS
6 15 (40.54%) XML
6 15 (40.54%) Continuous Integration
7 14 (37.84%) C#
8 11 (29.73%) SQL
9 10 (27.03%) OOP
9 10 (27.03%) Subversion
9 10 (27.03%) Git (software)
10 9 (24.32%) Pair Programming
10 9 (24.32%) MVC
10 9 (24.32%) ASP.NET
10 9 (24.32%) OO
10 9 (24.32%) DevOps
11 8 (21.62%) NoSQL
11 8 (21.62%) SOA
11 8 (21.62%) Finance
11 8 (21.62%) Spring
11 8 (21.62%) Selenium
12 7 (18.92%) WCF
12 7 (18.92%) JIRA
12 7 (18.92%) QA
12 7 (18.92%) .NET Framework

TDD
Top Related IT Skills in Hertfordshire by Category

For the 6 months to 30 March 2015, 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 7 (18.92%) Apache
2 5 (13.51%) Confluence
3 4 (10.81%) IIS
3 4 (10.81%) Tomcat
4 2 (5.41%) Node.js
4 2 (5.41%) Elasticsearch
4 2 (5.41%) lighttpd
5 1 (2.70%) WebLogic
5 1 (2.70%) WebLogic Portal
5 1 (2.70%) CMS
5 1 (2.70%) Alfresco
5 1 (2.70%) Mule
5 1 (2.70%) nginx
Applications
1 1 (2.70%) MS Excel
Business Applications
1 3 (8.11%) Magento
Cloud Services
1 1 (2.70%) Microsoft Azure
1 1 (2.70%) PaaS
Communications & Networking
1 4 (10.81%) TCP/IP
2 3 (8.11%) Internet
3 2 (5.41%) HTTP
Database & Business Intelligence
1 8 (21.62%) NoSQL
2 5 (13.51%) MySQL
2 5 (13.51%) Couchbase
2 5 (13.51%) Relational Database
3 4 (10.81%) SQL Server 2012
3 4 (10.81%) SQL Server
4 3 (8.11%) DB2
4 3 (8.11%) RDBMS
4 3 (8.11%) DbVisualizer
5 2 (5.41%) MongoDB
6 1 (2.70%) Apache Cassandra
6 1 (2.70%) Azure SQL Database
6 1 (2.70%) Oracle Database 10g
6 1 (2.70%) PostgreSQL
6 1 (2.70%) CouchDB
6 1 (2.70%) Redis
6 1 (2.70%) Oracle Database
Development Applications
1 10 (27.03%) Subversion
1 10 (27.03%) Git (software)
2 8 (21.62%) Selenium
3 7 (18.92%) JIRA
4 6 (16.22%) Ant
4 6 (16.22%) JUnit
5 5 (13.51%) Cucumber
5 5 (13.51%) Jenkins
6 4 (10.81%) Eclipse
6 4 (10.81%) Maven
7 3 (8.11%) IntelliJ
7 3 (8.11%) StyleCop
7 3 (8.11%) Team Foundation Server
7 3 (8.11%) WebDriver
7 3 (8.11%) Mockito
7 3 (8.11%) PHPUnit
8 2 (5.41%) Moq
8 2 (5.41%) SpecFlow
8 2 (5.41%) Grunt
8 2 (5.41%) Fiddler
General
1 8 (21.62%) Finance
2 5 (13.51%) Retail
3 3 (8.11%) Marketing
4 1 (2.70%) Financial Institution
Job Titles
1 29 (78.38%) Developer
2 12 (32.43%) Java Developer
3 10 (27.03%) .NET Developer
4 5 (13.51%) C# Developer
5 4 (10.81%) Software Developer
5 4 (10.81%) Architect
5 4 (10.81%) Senior Developer
5 4 (10.81%) Front-End Developer
6 3 (8.11%) Agile .NET Developer
6 3 (8.11%) Automation Tester
6 3 (8.11%) C# .NET Developer
6 3 (8.11%) Tester
7 2 (5.41%) Programmer
7 2 (5.41%) .NET Software Developer
7 2 (5.41%) Agile C# Developer
7 2 (5.41%) Senior Front-End Developer
7 2 (5.41%) .NET Programmer
7 2 (5.41%) Java Software Developer
7 2 (5.41%) Solutions Architect
7 2 (5.41%) Software Programmer
Libraries, Frameworks & Software Standards
1 17 (45.95%) HTML
1 17 (45.95%) REST
2 16 (43.24%) .NET
3 15 (40.54%) CSS
3 15 (40.54%) XML
4 9 (24.32%) ASP.NET
5 8 (21.62%) Spring
6 7 (18.92%) .NET Framework
6 7 (18.92%) WCF
7 6 (16.22%) Ajax
7 6 (16.22%) LINQ
7 6 (16.22%) RESTful
7 6 (16.22%) SOAP
7 6 (16.22%) XSL
7 6 (16.22%) XSLT
8 5 (13.51%) Web Services
8 5 (13.51%) HTML5
8 5 (13.51%) JSON
8 5 (13.51%) CSS3
9 4 (10.81%) POCO
Miscellaneous
1 5 (13.51%) Analytical Skills
2 3 (8.11%) Open Source
3 2 (5.41%) EMV
4 1 (2.70%) User Experience
Operating Systems
1 7 (18.92%) UNIX
1 7 (18.92%) Linux
Processes & Methodologies
1 34 (91.89%) Agile Software Development
2 26 (70.27%) BDD
3 21 (56.76%) Scrum
4 15 (40.54%) Continuous Integration
5 10 (27.03%) OOP
6 9 (24.32%) OO
6 9 (24.32%) Pair Programming
6 9 (24.32%) MVC
6 9 (24.32%) DevOps
7 8 (21.62%) SOA
8 7 (18.92%) E-Commerce
9 6 (16.22%) Code Coverage
9 6 (16.22%) Continuous Delivery
10 5 (13.51%) Unit Testing
11 4 (10.81%) Kanban
11 4 (10.81%) Regression Testing
11 4 (10.81%) Waterfall
12 3 (8.11%) Coaching
12 3 (8.11%) Document Management
12 3 (8.11%) Automated Testing
Programming Languages
1 17 (45.95%) JavaScript
2 15 (40.54%) Java
3 14 (37.84%) C#
4 11 (29.73%) SQL
5 6 (16.22%) VBScript
6 4 (10.81%) PHP
6 4 (10.81%) Ruby
6 4 (10.81%) Scala
7 3 (8.11%) Python
8 1 (2.70%) PL/SQL
8 1 (2.70%) Perl
Qualifications
1 1 (2.70%) Sun Certification
Quality Assurance & Compliance
1 7 (18.92%) QA
2 1 (2.70%) SLA
Systems Management
1 2 (5.41%) Business Desktop Deployment
1 2 (5.41%) SCOM
2 1 (2.70%) Puppet
2 1 (2.70%) Opscode Chef
Vendors
1 5 (13.51%) Microsoft
2 2 (5.41%) Splunk
3 1 (2.70%) Oracle
3 1 (2.70%) BEA
3 1 (2.70%) Zend