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 20 January 2017 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
20 Jan 2017
Same period 2016 Same period 2015
Test-Driven Development (TDD)
London / Croydon
Rank 26 11 19
Rank change year-on-year
-15 +8
Contract jobs citing TDD 13 20 3
As % of all contract IT jobs located in Croydon 5.80% 8.93% 3.13%
As % of the Processes & Methodologies category 6.44% 10.00% 3.80%
Number of daily rates quoted 12 14 1
Median daily rate £481 £406 £325
Median daily rate % change year-on-year
+18.46% +25.00%
UK excluding London median daily rate £420 £390 £375
% change year-on-year
+7.69% +4.00%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £36.51 £38.00 £38.25
% change year-on-year
-3.92% -0.65%

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
202 200 79
As % of all contract IT jobs located in Croydon 90.18% 89.29% 82.29%
Number of daily rates quoted 115 153 61
Median daily rate £450 £425 £400
Median daily rate % change year-on-year
+5.88% +6.25%
90% offered a daily rate of more than £375 £300 £368
10% offered a daily rate of more than £600 £579 £580
UK excluding London median daily rate £405 £400 £390
% change year-on-year
+1.25% +2.56%
Number of hourly rates quoted 1 1 0
Median hourly rate £43.50 £12.50 -
Median hourly rate % change year-on-year
+248.00% -
UK excluding London median hourly rate £35.00 £40.00 £26.00
% change year-on-year
-12.50% +53.84%

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 20 January 2017.

TDD Daily Rate Histogram in Croydon

TDD
Top 30 Related IT Skills in Croydon

For the 6 months to 20 January 2017, 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 (100.00%) Agile Software Development
2 19 (70.37%) BDD
3 14 (51.85%) SC Cleared
3 14 (51.85%) Security Cleared
3 14 (51.85%) RESTful
4 13 (48.15%) Java
5 12 (44.44%) JavaScript
5 12 (44.44%) Pair Programming
6 10 (37.04%) Scrum
6 10 (37.04%) Web Services
6 10 (37.04%) REST
7 8 (29.63%) CSS
8 7 (25.93%) Docker
9 6 (22.22%) Node.js
9 6 (22.22%) OO
9 6 (22.22%) HTML
9 6 (22.22%) Cucumber
9 6 (22.22%) Scala
10 5 (18.52%) Git (software)
10 5 (18.52%) HTML5
10 5 (18.52%) Finance
10 5 (18.52%) Spring
10 5 (18.52%) AngularJS
10 5 (18.52%) DevOps
11 4 (14.81%) Gradle
11 4 (14.81%) Front End Development
11 4 (14.81%) Hibernate
11 4 (14.81%) CSS3
12 3 (11.11%) Spring MVC
12 3 (11.11%) Software Engineering

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 2 (7.41%) Elasticsearch
Cloud Services
1 3 (11.11%) GitHub
Database & Business Intelligence
1 3 (11.11%) Relational Database
2 1 (3.70%) Big Data
Development Applications
1 6 (22.22%) Cucumber
2 5 (18.52%) Git (software)
3 4 (14.81%) Gradle
4 3 (11.11%) Grunt
4 3 (11.11%) gulp
4 3 (11.11%) Karma Test Runner
4 3 (11.11%) Protractor
5 2 (7.41%) Jasmine
5 2 (7.41%) JIRA
6 1 (3.70%) Bower
6 1 (3.70%) FitNesse
6 1 (3.70%) Jenkins
6 1 (3.70%) JUnit
6 1 (3.70%) Maven
6 1 (3.70%) NUnit
6 1 (3.70%) Selenium
General
1 5 (18.52%) Finance
Job Titles
1 20 (74.07%) Developer
2 5 (18.52%) Technical Leader
3 4 (14.81%) Front End Developer (Client-Side Developer)
3 4 (14.81%) Java Developer
3 4 (14.81%) Node.js Developer
4 3 (11.11%) Angular Developer
4 3 (11.11%) JavaScript Developer
4 3 (11.11%) Scala Developer
5 2 (7.41%) PHP Developer
5 2 (7.41%) PHP Symfony Developer
5 2 (7.41%) Senior Developer
5 2 (7.41%) Symfony Developer
6 1 (3.70%) Agile Coach
6 1 (3.70%) Developer in Test
6 1 (3.70%) Front End Web Developer (Client-Side Developer)
6 1 (3.70%) HTML CSS Developer
6 1 (3.70%) HTML Developer
6 1 (3.70%) Web Developer
Libraries, Frameworks & Software Standards
1 14 (51.85%) RESTful
2 10 (37.04%) REST
2 10 (37.04%) Web Services
3 8 (29.63%) CSS
4 6 (22.22%) HTML
4 6 (22.22%) Node.js
5 5 (18.52%) AngularJS
5 5 (18.52%) HTML5
5 5 (18.52%) Spring
6 4 (14.81%) CSS3
6 4 (14.81%) Hibernate
7 3 (11.11%) Sass
7 3 (11.11%) Spring Boot
7 3 (11.11%) Spring MVC
8 2 (7.41%) Ember.js
8 2 (7.41%) jBPM
8 2 (7.41%) Kafka
8 2 (7.41%) Play Framework
8 2 (7.41%) React
8 2 (7.41%) Twitter Bootstrap
Processes & Methodologies
1 27 (100.00%) Agile Software Development
2 19 (70.37%) BDD
3 12 (44.44%) Pair Programming
4 10 (37.04%) Scrum
5 6 (22.22%) OO
6 5 (18.52%) DevOps
7 4 (14.81%) Front End Development
8 3 (11.11%) MVC
8 3 (11.11%) Software Engineering
8 3 (11.11%) Web Development
9 2 (7.41%) Continuous Delivery
9 2 (7.41%) Kanban
9 2 (7.41%) Microservices
9 2 (7.41%) Security Architecture
10 1 (3.70%) Coaching
10 1 (3.70%) Cybersecurity
10 1 (3.70%) Data Protection
10 1 (3.70%) Service Design
10 1 (3.70%) Test Automation
10 1 (3.70%) User Stories
Programming Languages
1 13 (48.15%) Java
2 12 (44.44%) JavaScript
3 6 (22.22%) Scala
4 2 (7.41%) ES6
4 2 (7.41%) PHP
5 1 (3.70%) Bash Shell
Qualifications
1 14 (51.85%) SC Cleared
1 14 (51.85%) Security Cleared
Quality Assurance & Compliance
1 1 (3.70%) QA
1 1 (3.70%) SDET
System Software
1 7 (25.93%) Docker
Systems Management
1 3 (11.11%) Kubernetes