Period
to 19 November 2017

The following table provides summary statistics for contract job vacancies advertised in Middlesex with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 19 November 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
South East > Middlesex
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 21 22 32
Rank change year-on-year +1 +10 -3
Contract jobs citing TDD 13 19 8
As % of all contract IT jobs advertised in Middlesex 5.06% 5.32% 2.25%
As % of the Processes & Methodologies category 5.86% 6.15% 2.83%
Number of daily rates quoted 22 13 3
Middlesex median daily rate £500 £438 £350
Median daily rate % change year-on-year +14.29% +25.00% -13.85%
South East median daily rate £425 £440 £400
% change year-on-year -3.46% +10.06% +6.67%
Number of hourly rates quoted 0 0 0
Middlesex median hourly rate - - -
South East median hourly rate £45.00 £36.50 £50.00
% change year-on-year +23.29% -27.00% +25.00%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Middlesex with a requirement for process or methodology skills.

All Process and Methodology Skills
Middlesex
Contract vacancies with a requirement for process or methodology skills 222 309 283
As % of all contract IT jobs advertised in Middlesex 86.38% 86.55% 79.49%
Number of daily rates quoted 154 182 138
Middlesex median daily rate £439 £413 £396
Median daily rate % change year-on-year +6.36% +4.30% +2.06%
10th Percentile £300 £278 £263
90th Percentile £545 £550 £504
South East median daily rate £425 £400 £390
% change year-on-year +6.25% +2.56% +4.00%
Number of hourly rates quoted 2 9 10
Middlesex median hourly rate £31.75 £37.50 £38.50
Median hourly rate % change year-on-year -15.33% -2.60% -3.75%
10th Percentile £30.58 £23.70 £13.18
90th Percentile £33.53 £42.60 £48.75
South East median hourly rate £23.00 £26.75 £26.55
% change year-on-year -14.02% +0.75% +51.71%

TDD
Job Vacancy Trend in Middlesex

Job postings citing TDD as a percentage of all IT jobs advertised in Middlesex.

Job vacancy trend for TDD in Middlesex

TDD
Contractor Daily Rate Trend in Middlesex

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Middlesex.

Contractor daily rate trend for TDD in Middlesex

For the 6 months to 19 November 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 Middlesex region with a requirement for TDD.

1 11 (84.62%) OO
1 11 (84.62%) Agile Software Development
2 10 (76.92%) Continuous Integration
3 9 (69.23%) Microsoft Azure
3 9 (69.23%) Amazon AWS
3 9 (69.23%) PostgreSQL
3 9 (69.23%) MySQL
3 9 (69.23%) Oracle
3 9 (69.23%) Puppet
3 9 (69.23%) NoSQL
3 9 (69.23%) OpenStack
3 9 (69.23%) Opscode Chef
3 9 (69.23%) Ansible
4 7 (53.85%) Java
5 6 (46.15%) WebLogic
5 6 (46.15%) Tomcat
5 6 (46.15%) Python
5 6 (46.15%) WebSphere
5 6 (46.15%) NUnit
5 6 (46.15%) MSTest
6 4 (30.77%) CSS
6 4 (30.77%) JavaScript
6 4 (30.77%) HTML
7 3 (23.08%) C#
7 3 (23.08%) BDD
8 2 (15.38%) Node.js
8 2 (15.38%) AngularJS
8 2 (15.38%) React
8 2 (15.38%) Git (software)
8 2 (15.38%) MVC

TDD
Co-occurring IT Skills in Middlesex 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 9 (69.23%) OpenStack
2 6 (46.15%) Tomcat
2 6 (46.15%) WebLogic
2 6 (46.15%) WebSphere
Cloud Services
1 9 (69.23%) Amazon AWS
1 9 (69.23%) Microsoft Azure
Database & Business Intelligence
1 9 (69.23%) MySQL
1 9 (69.23%) NoSQL
1 9 (69.23%) PostgreSQL
Development Applications
1 6 (46.15%) MSTest
1 6 (46.15%) NUnit
2 2 (15.38%) Git (software)
3 1 (7.69%) Gradle
3 1 (7.69%) Hudson
3 1 (7.69%) Jasmine
3 1 (7.69%) Jenkins
General
1 1 (7.69%) Telecoms
Job Titles
1 13 (100.00%) Developer
2 6 (46.15%) Java Developer
3 3 (23.08%) C# Developer
3 3 (23.08%) JavaScript Developer
4 2 (15.38%) Angular Developer
4 2 (15.38%) Python Developer
5 1 (7.69%) Front End Developer (Client-Side Developer)
5 1 (7.69%) Software Developer
Libraries, Frameworks & Software Standards
1 4 (30.77%) CSS
1 4 (30.77%) HTML
2 2 (15.38%) AngularJS
2 2 (15.38%) Node.js
2 2 (15.38%) React
3 1 (7.69%) CSS3
3 1 (7.69%) Hibernate
3 1 (7.69%) HTML5
3 1 (7.69%) JPA
3 1 (7.69%) Play Framework
3 1 (7.69%) RESTful
3 1 (7.69%) spray
3 1 (7.69%) Spring
3 1 (7.69%) Spring Boot
3 1 (7.69%) Spring MVC
3 1 (7.69%) Web Services
Miscellaneous
1 1 (7.69%) Analytical Skills
1 1 (7.69%) IPTV
Operating Systems
1 1 (7.69%) Linux
Processes & Methodologies
1 11 (84.62%) Agile Software Development
1 11 (84.62%) OO
2 10 (76.92%) Continuous Integration
3 3 (23.08%) BDD
4 2 (15.38%) MVC
5 1 (7.69%) Continuous Improvement
5 1 (7.69%) Front End Development
5 1 (7.69%) High Availability
5 1 (7.69%) Open Source
5 1 (7.69%) Pair Programming
Programming Languages
1 7 (53.85%) Java
2 6 (46.15%) Python
3 4 (30.77%) JavaScript
4 3 (23.08%) C#
5 1 (7.69%) Scala
5 1 (7.69%) SQL
Qualifications
1 1 (7.69%) Degree
Systems Management
1 9 (69.23%) Ansible
1 9 (69.23%) Opscode Chef
1 9 (69.23%) Puppet
Vendors
1 9 (69.23%) Oracle