The table below looks at the statistics for TDD skills in IT contracts advertised for the Hertfordshire region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 26 June 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
26 Jun 2016
Same period 2015 Same period 2014
Test-Driven Development (TDD)
Rank 32 49 47
Rank change year-on-year
+17 -2
Contract jobs citing TDD 24 26 10
As % of all contract IT jobs located in Hertfordshire 3.82% 3.19% 1.65%
As % of the Processes & Methodologies category 4.91% 4.15% 2.21%
Number of daily rates quoted 20 13 10
Median daily rate £463 £500 £413
Median daily rate % change year-on-year
-7.50% +21.21%
90% offered a daily rate of more than £350 £363 £404
10% offered a daily rate of more than £501 £500 £451
UK excluding London median daily rate £413 £375 £375
% change year-on-year
+10.00% -
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £40.00 £43.75 £59.50
% change year-on-year
-8.57% -26.47%
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
489 627 453
As % of all contract IT jobs located in Hertfordshire 77.87% 77.03% 74.63%
Number of daily rates quoted 259 327 217
Median daily rate £425 £381 £375
Median daily rate % change year-on-year
+11.69% +1.46%
90% offered a daily rate of more than £300 £295 £250
10% offered a daily rate of more than £500 £538 £475
UK excluding London median daily rate £400 £380 £375
% change year-on-year
+5.26% +1.33%
Number of hourly rates quoted 16 52 28
Median hourly rate £30.00 £33.00 £26.50
Median hourly rate % change year-on-year
-9.09% +24.52%
90% offered a hourly rate of more than £15.00 £9.90 £11.00
10% offered a hourly rate of more than £52.50 £49.00 £39.75
UK excluding London median hourly rate £28.50 £30.00 £30.00
% change year-on-year
-5.00% -

TDD
Jobs Demand Trend in Hertfordshire

The demand trend of contract jobs across the Hertfordshire region citing TDD as a proportion of all IT contracts with a match in 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 26 June 2016.

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 median contractor rates quoted in IT jobs citing TDD within the Hertfordshire region over the 3 months to 26 June 2016. 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
(Click see detailed
statistics and trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Cheshunt - 2 £490 - 1
Welwyn Garden City +7 1 £430 -21.81% 1
Watford 0 1 - - 4
TDD
East of England

TDD
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 26 June 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 Hertfordshire region with a requirement for TDD.

1 41 (95.35%) Agile Software Development
2 26 (60.47%) Java
3 18 (41.86%) Spring
4 17 (39.53%) Continuous Integration
5 15 (34.88%) JavaScript
6 13 (30.23%) HTML
6 13 (30.23%) E-Commerce
6 13 (30.23%) BDD
7 12 (27.91%) XML
8 11 (25.58%) Scrum
8 11 (25.58%) Retail
9 10 (23.26%) Finance
9 10 (23.26%) Oracle
10 9 (20.93%) Hibernate
11 8 (18.60%) CSS
11 8 (18.60%) SQL
11 8 (18.60%) J2EE
11 8 (18.60%) JSON
11 8 (18.60%) Amazon AWS
11 8 (18.60%) SOLID
12 7 (16.28%) Microsoft Azure
12 7 (16.28%) REST
12 7 (16.28%) DevOps
12 7 (16.28%) .NET
12 7 (16.28%) C#
12 7 (16.28%) SOAP
12 7 (16.28%) DB2
13 6 (13.95%) Web Services
13 6 (13.95%) PHP
13 6 (13.95%) SOA

TDD
Top Related IT Skills in Hertfordshire 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 1 (2.33%) Apache
1 1 (2.33%) Apache Solr
1 1 (2.33%) WebSphere
Business Applications
1 5 (11.63%) Magento
Cloud Services
1 8 (18.60%) Amazon AWS
2 7 (16.28%) Microsoft Azure
3 5 (11.63%) GitHub
4 2 (4.65%) Cloud Computing
5 1 (2.33%) SaaS
Communications & Networking
1 2 (4.65%) Network Security
Database & Business Intelligence
1 7 (16.28%) DB2
2 5 (11.63%) MySQL
2 5 (11.63%) NoSQL
3 4 (9.30%) Couchbase
4 3 (6.98%) DbVisualizer
4 3 (6.98%) SQL Server
5 1 (2.33%) Big Data
5 1 (2.33%) Hadoop
5 1 (2.33%) Hazelcast
5 1 (2.33%) Redis
Development Applications
1 6 (13.95%) JIRA
1 6 (13.95%) Selenium
1 6 (13.95%) Subversion
2 5 (11.63%) Jenkins
2 5 (11.63%) WebDriver
3 4 (9.30%) Cucumber
4 3 (6.98%) Git (software)
4 3 (6.98%) Protractor
5 2 (4.65%) Appium
5 2 (4.65%) JIRA Agile
5 2 (4.65%) PHPUnit
6 1 (2.33%) CruiseControl
6 1 (2.33%) FitNesse
6 1 (2.33%) Maven
6 1 (2.33%) MSTest
6 1 (2.33%) NUnit
6 1 (2.33%) SpecFlow
6 1 (2.33%) Team Foundation Server
6 1 (2.33%) TeamCity
General
1 11 (25.58%) Retail
2 10 (23.26%) Finance
3 3 (6.98%) Back Office
3 3 (6.98%) Front Office
Job Titles
1 24 (55.81%) Developer
2 16 (37.21%) Java Developer
3 7 (16.28%) Agile Developer
4 6 (13.95%) Agile Java Developer
5 5 (11.63%) Automation Tester
5 5 (11.63%) Selenium Automation Tester
5 5 (11.63%) Selenium Tester
5 5 (11.63%) Tester
6 4 (9.30%) Analyst
6 4 (9.30%) Architect
6 4 (9.30%) Hybris Developer
6 4 (9.30%) J2EE Developer
6 4 (9.30%) Java/J2EE Developer
6 4 (9.30%) Web Automation Tester
6 4 (9.30%) Web Tester
7 3 (6.98%) Agile Business Analyst
7 3 (6.98%) Core Java Developer
7 3 (6.98%) E-Commerce Architect
7 3 (6.98%) Front End Developer (Client-Side Developer)
7 3 (6.98%) Senior Analyst
Libraries, Frameworks & Software Standards
1 18 (41.86%) Spring
2 13 (30.23%) HTML
3 12 (27.91%) XML
4 9 (20.93%) Hibernate
5 8 (18.60%) CSS
5 8 (18.60%) J2EE
5 8 (18.60%) JSON
6 7 (16.28%) .NET
6 7 (16.28%) REST
6 7 (16.28%) SOAP
7 6 (13.95%) AngularJS
7 6 (13.95%) HTML5
7 6 (13.95%) RESTful
7 6 (13.95%) Web Services
8 5 (11.63%) jQuery
8 5 (11.63%) LESS
8 5 (11.63%) Sass
9 4 (9.30%) Backbone.js
9 4 (9.30%) React
9 4 (9.30%) Twitter Bootstrap
Miscellaneous
1 6 (13.95%) Analytical Skills
2 3 (6.98%) iPad
3 2 (4.65%) Digital Media
3 2 (4.65%) Virtual Team
4 1 (2.33%) Data Structures
4 1 (2.33%) Enterprise Software
4 1 (2.33%) FMCG
4 1 (2.33%) Inversion of Control
4 1 (2.33%) User Experience
Operating Systems
1 5 (11.63%) Unix
2 3 (6.98%) Windows
3 2 (4.65%) Linux
3 2 (4.65%) Red Hat Enterprise Linux
Processes & Methodologies
1 41 (95.35%) Agile Software Development
2 17 (39.53%) Continuous Integration
3 13 (30.23%) BDD
3 13 (30.23%) E-Commerce
4 11 (25.58%) Scrum
5 8 (18.60%) SOLID
6 7 (16.28%) DevOps
7 6 (13.95%) Kanban
7 6 (13.95%) Pair Programming
7 6 (13.95%) SOA
7 6 (13.95%) Test Automation
8 5 (11.63%) Automated Testing
8 5 (11.63%) Coaching
8 5 (11.63%) Continuous Delivery
8 5 (11.63%) Document Management
8 5 (11.63%) Open Source
8 5 (11.63%) Test Scripting
8 5 (11.63%) User Stories
8 5 (11.63%) Workflow
9 4 (9.30%) Microservices
Programming Languages
1 26 (60.47%) Java
2 15 (34.88%) JavaScript
3 8 (18.60%) SQL
4 7 (16.28%) C#
5 6 (13.95%) PHP
6 3 (6.98%) Ruby
7 2 (4.65%) Scala
8 1 (2.33%) PowerShell
Quality Assurance & Compliance
1 5 (11.63%) QA
System Software
1 1 (2.33%) Apache ZooKeeper
Systems Management
1 1 (2.33%) Ansible
Vendors
1 10 (23.26%) Oracle
2 6 (13.95%) hybris
3 5 (11.63%) Microsoft
4 3 (6.98%) IBM
4 3 (6.98%) Red Hat
5 2 (4.65%) Sitecore
6 1 (2.33%) Splunk
Watford
Reco Group
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