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 10 December 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
10 Dec 2016
Same period 2015 Same period 2014
Test-Driven Development (TDD)
Rank 34 9 26
Rank change year-on-year
-25 +17
Contract jobs citing TDD 13 22 4
As % of all contract IT jobs located in Croydon 4.98% 12.87% 2.70%
As % of the Processes & Methodologies category 5.63% 14.10% 3.13%
Number of daily rates quoted 13 14 4
Median daily rate £500 £425 £444
Median daily rate % change year-on-year
+17.64% -4.22%
90% offered a daily rate of more than £430 £375 £438
10% offered a daily rate of more than £588 £450 £468
UK excluding London median daily rate £425 £400 £375
% change year-on-year
+6.25% +6.66%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £39.76 £36.50 £38.25
% change year-on-year
+8.93% -4.57%
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
231 156 128
As % of all contract IT jobs located in Croydon 88.51% 91.23% 86.49%
Number of daily rates quoted 135 108 114
Median daily rate £475 £425 £470
Median daily rate % change year-on-year
+11.76% -9.57%
90% offered a daily rate of more than £350 £325 £361
10% offered a daily rate of more than £588 £500 £700
UK excluding London median daily rate £413 £400 £385
% change year-on-year
+3.12% +3.89%
Number of hourly rates quoted 1 2 0
Median hourly rate £43.50 £12.50 -
Median hourly rate % change year-on-year
+248.00% -
UK excluding London median hourly rate £30.00 £34.00 £25.00
% change year-on-year
-11.76% +36.00%

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 10 December 2016.

TDD Daily Rate Histogram in Croydon

TDD
Top 30 Related IT Skills in Croydon

For the 6 months to 10 December 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 27 (96.43%) Agile Software Development
2 21 (75.00%) BDD
3 14 (50.00%) JavaScript
4 12 (42.86%) Security Cleared
5 11 (39.29%) RESTful
6 10 (35.71%) AngularJS
6 10 (35.71%) Scrum
6 10 (35.71%) SC Cleared
7 9 (32.14%) HTML
7 9 (32.14%) Java
7 9 (32.14%) CSS
7 9 (32.14%) OO
7 9 (32.14%) Git (software)
8 8 (28.57%) Pair Programming
9 7 (25.00%) Node.js
9 7 (25.00%) REST
10 6 (21.43%) HTML5
10 6 (21.43%) Cucumber
11 5 (17.86%) Twitter Bootstrap
11 5 (17.86%) Docker
11 5 (17.86%) Finance
11 5 (17.86%) Web Services
11 5 (17.86%) Front End Development
12 4 (14.29%) API Development
12 4 (14.29%) ES6
12 4 (14.29%) MVC
12 4 (14.29%) JIRA
12 4 (14.29%) Spring
12 4 (14.29%) React
12 4 (14.29%) Elasticsearch

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 4 (14.29%) Elasticsearch
2 1 (3.57%) Tomcat
Cloud Services
1 4 (14.29%) GitHub
2 1 (3.57%) Amazon AWS
2 1 (3.57%) Amazon EC2
2 1 (3.57%) Microsoft Azure
Database & Business Intelligence
1 3 (10.71%) SQL Server
2 1 (3.57%) Azure SQL Database
2 1 (3.57%) PostgreSQL
2 1 (3.57%) QlikView
2 1 (3.57%) Relational Database
Development Applications
1 9 (32.14%) Git (software)
2 6 (21.43%) Cucumber
3 4 (14.29%) JIRA
4 3 (10.71%) Grunt
4 3 (10.71%) gulp
4 3 (10.71%) Jasmine
4 3 (10.71%) Karma Test Runner
4 3 (10.71%) Protractor
5 2 (7.14%) Gradle
5 2 (7.14%) Jenkins
5 2 (7.14%) Maven
6 1 (3.57%) Bower
6 1 (3.57%) DbUnit
6 1 (3.57%) jMock
6 1 (3.57%) JUnit
6 1 (3.57%) Mockito
6 1 (3.57%) MSBuild
6 1 (3.57%) NUnit
6 1 (3.57%) SonarQube
6 1 (3.57%) Visual Studio
General
1 5 (17.86%) Finance
Job Titles
1 17 (60.71%) Developer
2 5 (17.86%) Node.js Developer
2 5 (17.86%) Technical Leader
3 4 (14.29%) Front End Developer (Client-Side Developer)
4 3 (10.71%) Angular Developer
4 3 (10.71%) Architect
4 3 (10.71%) Technical Architect
5 2 (7.14%) .NET Developer
5 2 (7.14%) ASP.NET Developer
5 2 (7.14%) ASP.NET MVC Developer
5 2 (7.14%) C# .NET Developer
5 2 (7.14%) C# ASP.NET Developer
5 2 (7.14%) C# Developer
5 2 (7.14%) Full Stack Developer
5 2 (7.14%) Java Developer
5 2 (7.14%) JavaScript Developer
5 2 (7.14%) PHP Developer
5 2 (7.14%) PHP Symfony Developer
5 2 (7.14%) Symfony Developer
6 1 (3.57%) HTML Developer
Libraries, Frameworks & Software Standards
1 11 (39.29%) RESTful
2 10 (35.71%) AngularJS
3 9 (32.14%) CSS
3 9 (32.14%) HTML
4 7 (25.00%) Node.js
4 7 (25.00%) REST
5 6 (21.43%) HTML5
6 5 (17.86%) Twitter Bootstrap
6 5 (17.86%) Web Services
7 4 (14.29%) Backbone.js
7 4 (14.29%) CSS3
7 4 (14.29%) Ember.js
7 4 (14.29%) Kafka
7 4 (14.29%) RabbitMQ
7 4 (14.29%) React
7 4 (14.29%) Spring
8 3 (10.71%) .NET
8 3 (10.71%) ASP.NET
8 3 (10.71%) ASP.NET MVC
8 3 (10.71%) Sass
Miscellaneous
1 3 (10.71%) Analytical Skills
1 3 (10.71%) Data Integration
Processes & Methodologies
1 27 (96.43%) Agile Software Development
2 21 (75.00%) BDD
3 10 (35.71%) Scrum
4 9 (32.14%) OO
5 8 (28.57%) Pair Programming
6 5 (17.86%) Front End Development
7 4 (14.29%) API Development
7 4 (14.29%) MVC
8 3 (10.71%) Agile Project Management
8 3 (10.71%) Continuous Delivery
8 3 (10.71%) Data Modelling
8 3 (10.71%) Information Security
8 3 (10.71%) Kanban
8 3 (10.71%) Mentoring
8 3 (10.71%) Project Management
8 3 (10.71%) SDLC
8 3 (10.71%) User Stories
8 3 (10.71%) Web Development
9 2 (7.14%) Continuous Integration
10 1 (3.57%) Coaching
Programming Languages
1 14 (50.00%) JavaScript
2 9 (32.14%) Java
3 4 (14.29%) ES6
4 3 (10.71%) C#
4 3 (10.71%) SQL
5 2 (7.14%) PHP
5 2 (7.14%) Scala
6 1 (3.57%) Bash Shell
6 1 (3.57%) PowerShell
6 1 (3.57%) T-SQL
6 1 (3.57%) TypeScript
Qualifications
1 12 (42.86%) Security Cleared
2 10 (35.71%) SC Cleared
3 2 (7.14%) BC Cleared
Quality Assurance & Compliance
1 1 (3.57%) SDET
System Software
1 5 (17.86%) Docker
2 1 (3.57%) VMware Infrastructure
2 1 (3.57%) vSphere
Systems Management
1 1 (3.57%) Kubernetes
Vendors
1 1 (3.57%) Microsoft
1 1 (3.57%) VMware