The table below looks at the statistics for TDD skills in IT contracts advertised for the Croydon region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 28 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
28 Jun 2016
Same period 2015 Same period 2014
Test-Driven Development (TDD)
Rank 14 19 17
Rank change year-on-year
+5 -2
Contract jobs citing TDD 29 8 2
As % of all contract IT jobs located in Croydon 11.79% 5.67% 2.27%
As % of the Processes & Methodologies category 13.36% 6.25% 4.17%
Number of daily rates quoted 24 4 2
Median daily rate £450 £369 £700
Median daily rate % change year-on-year
+22.03% -47.32%
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
London

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

Processes & Methodologies Category
Croydon
Contract IT job ads with a match in the
Processes & Methodologies category
217 128 48
As % of all contract IT jobs located in Croydon 88.21% 90.78% 54.55%
Number of daily rates quoted 148 88 39
Median daily rate £418 £400 £300
Median daily rate % change year-on-year
+4.37% +33.33%
90% offered a daily rate of more than £310 £250 £225
10% offered a daily rate of more than £550 £525 £608
UK excluding London median daily rate £400 £385 £375
% change year-on-year
+3.89% +2.66%
Number of hourly rates quoted 6 3 2
Median hourly rate £21.00 £27.78 £17.00
Median hourly rate % change year-on-year
-24.40% +63.41%
UK excluding London median hourly rate £28.50 £30.00 £30.00
% change year-on-year
-5.00% -

TDD
Jobs Demand Trend in Croydon

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

TDD Jobs Demand Trend in Croydon

TDD
Daily Rate Trend in Croydon

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

TDD Daily Rate Trend in Croydon

TDD
Daily Rate Histogram in Croydon

This chart provides a histogram of daily rates quoted in contract IT jobs citing TDD across the Croydon region over the 3 months to 28 June 2016.

TDD Daily Rate Histogram in Croydon

TDD
Top 30 Related IT Skills in Croydon

For the 6 months to 28 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 Croydon region with a requirement for TDD.

1 43 (93.48%) Agile Software Development
2 29 (63.04%) Scrum
3 26 (56.52%) Java
4 22 (47.83%) BDD
5 16 (34.78%) Git (software)
5 16 (34.78%) Continuous Integration
6 14 (30.43%) JavaScript
6 14 (30.43%) HTML
6 14 (30.43%) Security Cleared
6 14 (30.43%) SDLC
7 13 (28.26%) CSS
8 11 (23.91%) Mentoring
9 10 (21.74%) GitHub
9 10 (21.74%) PostgreSQL
10 9 (19.57%) Spring
11 8 (17.39%) OO
11 8 (17.39%) HTML5
11 8 (17.39%) User Stories
11 8 (17.39%) Enterprise Software
11 8 (17.39%) Analytical Skills
12 7 (15.22%) Front End Development
12 7 (15.22%) AngularJS
12 7 (15.22%) Web Services
12 7 (15.22%) Tomcat
12 7 (15.22%) SC Cleared
13 6 (13.04%) jQuery
13 6 (13.04%) QA
13 6 (13.04%) Scala
13 6 (13.04%) Node.js
13 6 (13.04%) REST

TDD
Top Related IT Skills in Croydon 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 7 (15.22%) Tomcat
2 3 (6.52%) JBoss
3 2 (4.35%) Mule
4 1 (2.17%) Apache
4 1 (2.17%) Elasticsearch
4 1 (2.17%) WildFly
Cloud Services
1 10 (21.74%) GitHub
2 2 (4.35%) Amazon AWS
2 2 (4.35%) Amazon EC2
3 1 (2.17%) Microsoft Azure
Database & Business Intelligence
1 10 (21.74%) PostgreSQL
2 5 (10.87%) MySQL
3 3 (6.52%) MongoDB
3 3 (6.52%) SQL Server
4 2 (4.35%) NoSQL
5 1 (2.17%) Azure SQL Database
5 1 (2.17%) QlikView
5 1 (2.17%) Relational Database
Development Applications
1 16 (34.78%) Git (software)
2 5 (10.87%) Grunt
2 5 (10.87%) JIRA
2 5 (10.87%) JUnit
3 3 (6.52%) Jenkins
3 3 (6.52%) SonarQube
4 2 (4.35%) Cucumber
4 2 (4.35%) DbUnit
4 2 (4.35%) jMock
4 2 (4.35%) Maven
4 2 (4.35%) Mockito
5 1 (2.17%) Ant
5 1 (2.17%) Gerrit
5 1 (2.17%) Gradle
5 1 (2.17%) JMeter
5 1 (2.17%) MSBuild
5 1 (2.17%) NUnit
5 1 (2.17%) Selenium
5 1 (2.17%) Subversion
5 1 (2.17%) Visual Studio
General
1 2 (4.35%) Finance
1 2 (4.35%) Games
1 2 (4.35%) Telecoms
Job Titles
1 29 (63.04%) Developer
2 15 (32.61%) Java Developer
3 8 (17.39%) Senior Developer
4 7 (15.22%) Senior Java Developer
5 6 (13.04%) Agile Developer
5 6 (13.04%) Agile Java Developer
6 5 (10.87%) Web Developer
7 4 (8.70%) Front End Developer (Client-Side Developer)
7 4 (8.70%) Front End Web Developer (Client-Side Developer)
7 4 (8.70%) JavaScript Developer
8 3 (6.52%) Architect
8 3 (6.52%) Node.js Developer
8 3 (6.52%) Scala Developer
8 3 (6.52%) Senior Agile Developer
8 3 (6.52%) Senior Agile Java Developer
8 3 (6.52%) Technical Architect
8 3 (6.52%) Technical Leader
9 2 (4.35%) ASP.NET MVC Developer
9 2 (4.35%) Java Scala Developer
9 2 (4.35%) SC Cleared Java Developer
Libraries, Frameworks & Software Standards
1 14 (30.43%) HTML
2 13 (28.26%) CSS
3 9 (19.57%) Spring
4 8 (17.39%) HTML5
5 7 (15.22%) AngularJS
5 7 (15.22%) Web Services
6 6 (13.04%) jQuery
6 6 (13.04%) Node.js
6 6 (13.04%) REST
7 5 (10.87%) ActiveMQ
7 5 (10.87%) Apache Camel
7 5 (10.87%) J2EE
7 5 (10.87%) RESTful
7 5 (10.87%) Sass
8 4 (8.70%) SOAP
8 4 (8.70%) XML
9 3 (6.52%) .NET
9 3 (6.52%) ASP.NET
9 3 (6.52%) Hibernate
9 3 (6.52%) JMS
Miscellaneous
1 8 (17.39%) Analytical Skills
1 8 (17.39%) Enterprise Software
2 5 (10.87%) Data Integration
3 3 (6.52%) Embedded Systems
3 3 (6.52%) User Experience
4 2 (4.35%) Minimum Viable Product
4 2 (4.35%) Mobile App
Operating Systems
1 4 (8.70%) Linux
2 1 (2.17%) Windows
Processes & Methodologies
1 43 (93.48%) Agile Software Development
2 29 (63.04%) Scrum
3 22 (47.83%) BDD
4 16 (34.78%) Continuous Integration
5 14 (30.43%) SDLC
6 11 (23.91%) Mentoring
7 8 (17.39%) OO
7 8 (17.39%) User Stories
8 7 (15.22%) Front End Development
9 5 (10.87%) Agile Project Management
9 5 (10.87%) Kanban
9 5 (10.87%) Pair Programming
9 5 (10.87%) Project Management
9 5 (10.87%) Stakeholder Management
9 5 (10.87%) Web Development
10 4 (8.70%) API Development
10 4 (8.70%) Domain-Driven Design
10 4 (8.70%) Multithreading
10 4 (8.70%) MVC
10 4 (8.70%) Open Source
Programming Languages
1 26 (56.52%) Java
2 14 (30.43%) JavaScript
3 6 (13.04%) Scala
4 4 (8.70%) SQL
5 3 (6.52%) C#
5 3 (6.52%) C++
6 2 (4.35%) Bash Shell
6 2 (4.35%) PHP
6 2 (4.35%) Shell Script
7 1 (2.17%) ES6
7 1 (2.17%) Go
7 1 (2.17%) Groovy
7 1 (2.17%) PowerShell
7 1 (2.17%) T-SQL
7 1 (2.17%) TypeScript
Qualifications
1 14 (30.43%) Security Cleared
2 7 (15.22%) SC Cleared
3 1 (2.17%) BC Cleared
Quality Assurance & Compliance
1 6 (13.04%) QA
System Software
1 2 (4.35%) Docker
1 2 (4.35%) VMware Infrastructure
1 2 (4.35%) vSphere
Vendors
1 2 (4.35%) VMware
2 1 (2.17%) Microsoft
2 1 (2.17%) Zend