Period
to 23 November 2017

The following table provides summary statistics for contract job vacancies advertised in Liverpool 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 23 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)
Merseyside > Liverpool
6 months to
23 Nov 2017
Same period 2016 Same period 2015
Rank 29 41 46
Rank change year-on-year +12 +5 -4
Contract jobs citing TDD 16 8 10
As % of all contract IT jobs advertised in Liverpool 3.90% 1.82% 1.68%
As % of the Processes & Methodologies category 4.71% 2.38% 2.06%
Number of daily rates quoted 11 6 3
Liverpool median daily rate £400 £410 £350
Median daily rate % change year-on-year -2.44% +17.14% +59.09%
10th Percentile £333 £356 £317
90th Percentile £450 £525 £375
Merseyside median daily rate £400 £370 £330
% change year-on-year +8.11% +12.12% +21.10%
Number of hourly rates quoted 0 0 0
Liverpool median hourly rate - - -
Merseyside median hourly rate - - -

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 Liverpool with a requirement for process or methodology skills.

All Process and Methodology Skills
Liverpool
Contract vacancies with a requirement for process or methodology skills 340 336 486
As % of all contract IT jobs advertised in Liverpool 82.93% 76.36% 81.82%
Number of daily rates quoted 226 222 272
Liverpool median daily rate £391 £388 £400
Median daily rate % change year-on-year +0.97% -3.06% +6.60%
10th Percentile £250 £241 £183
90th Percentile £538 £525 £552
Merseyside median daily rate £395 £375 £375
% change year-on-year +5.33% - +7.14%
Number of hourly rates quoted 10 5 5
Liverpool median hourly rate £13.00 £22.85 £17.50
Median hourly rate % change year-on-year -43.09% +30.54% +16.67%
10th Percentile £11.04 £10.70 £11.20
90th Percentile £19.31 £32.06 £97.58
Merseyside median hourly rate £13.00 £22.42 £17.50
% change year-on-year -42.02% +28.13% +12.90%

TDD
Job Vacancy Trend in Liverpool

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

Job vacancy trend for TDD in Liverpool

TDD
Contractor Daily Rate Trend in Liverpool

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

Contractor daily rate trend for TDD in Liverpool

TDD
Contractor Daily Rate Histogram in Liverpool

The daily rate distribution of IT jobs citing TDD in Liverpool over the 6 months to 23 November 2017.

Contractor daily rate histogram for TDD in Liverpool

For the 6 months to 23 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 Liverpool region with a requirement for TDD.

1 16 (100.00%) Agile Software Development
2 12 (75.00%) Scrum
3 10 (62.50%) HTML
3 10 (62.50%) JavaScript
3 10 (62.50%) CSS
3 10 (62.50%) BDD
4 9 (56.25%) Git (software)
4 9 (56.25%) Java
5 8 (50.00%) Kanban
5 8 (50.00%) Spring
6 7 (43.75%) RESTful
6 7 (43.75%) React
7 6 (37.50%) Jenkins
7 6 (37.50%) Front End Development
8 5 (31.25%) Microservices
8 5 (31.25%) MongoDB
8 5 (31.25%) Pair Programming
9 4 (25.00%) MySQL
9 4 (25.00%) Ember.js
9 4 (25.00%) SDLC
9 4 (25.00%) Responsive Web Design
9 4 (25.00%) Greenfield Project
10 3 (18.75%) Spring Boot
10 3 (18.75%) Wireframes
10 3 (18.75%) Oracle Database
10 3 (18.75%) Coaching
10 3 (18.75%) User Experience
10 3 (18.75%) Continuous Delivery
10 3 (18.75%) AngularJS
10 3 (18.75%) Oracle

TDD
Co-occurring IT Skills in Liverpool 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 (6.25%) CMS
1 1 (6.25%) Elasticsearch
1 1 (6.25%) Joomla!
1 1 (6.25%) WordPress
Applications
1 1 (6.25%) Adobe Creative Suite
1 1 (6.25%) Adobe Illustrator
1 1 (6.25%) Photoshop
Database & Business Intelligence
1 5 (31.25%) MongoDB
2 4 (25.00%) MySQL
3 3 (18.75%) Oracle Database
3 3 (18.75%) SQL Server
4 1 (6.25%) Apache Hive
4 1 (6.25%) NoSQL
4 1 (6.25%) Redis
4 1 (6.25%) SQL Server 2014
4 1 (6.25%) SQL Server Integration Services
Development Applications
1 9 (56.25%) Git (software)
2 6 (37.50%) Jenkins
3 1 (6.25%) Cucumber
3 1 (6.25%) Grunt
3 1 (6.25%) gulp
3 1 (6.25%) Jasmine
3 1 (6.25%) Karma Test Runner
3 1 (6.25%) Mocha
3 1 (6.25%) Selenium
3 1 (6.25%) Sinon.JS
3 1 (6.25%) Subversion
3 1 (6.25%) webpack
General
1 1 (6.25%) Banking
1 1 (6.25%) Games
Job Titles
1 16 (100.00%) Developer
2 9 (56.25%) Java Developer
3 6 (37.50%) Front End Developer (Client-Side Developer)
4 2 (12.50%) UI Developer
4 2 (12.50%) UI/UX Developer
4 2 (12.50%) UX Developer
5 1 (6.25%) .NET Developer
5 1 (6.25%) Agile Developer
5 1 (6.25%) Agile Java Developer
5 1 (6.25%) Front End Java Developer (Client-Side Java Developer)
5 1 (6.25%) HTML CSS Developer
5 1 (6.25%) HTML Developer
5 1 (6.25%) JavaScript Developer
5 1 (6.25%) PHP Developer
5 1 (6.25%) SSIS Developer
Libraries, Frameworks & Software Standards
1 10 (62.50%) CSS
1 10 (62.50%) HTML
2 8 (50.00%) Spring
3 7 (43.75%) React
3 7 (43.75%) RESTful
4 4 (25.00%) Ember.js
5 3 (18.75%) AngularJS
5 3 (18.75%) JSON
5 3 (18.75%) Spring Boot
6 2 (12.50%) CSS3
6 2 (12.50%) Hibernate
6 2 (12.50%) HTML5
6 2 (12.50%) Node.js
7 1 (6.25%) Apache Cordova
7 1 (6.25%) Chai
7 1 (6.25%) Dapper ORM
7 1 (6.25%) Dropwizard
7 1 (6.25%) Ionic Framework
7 1 (6.25%) LESS
7 1 (6.25%) Sass
Miscellaneous
1 4 (25.00%) Greenfield Project
2 3 (18.75%) User Experience
3 1 (6.25%) Mobile App
Operating Systems
1 3 (18.75%) Linux
Processes & Methodologies
1 16 (100.00%) Agile Software Development
2 12 (75.00%) Scrum
3 10 (62.50%) BDD
4 8 (50.00%) Kanban
5 6 (37.50%) Front End Development
6 5 (31.25%) Microservices
6 5 (31.25%) Pair Programming
7 4 (25.00%) Responsive Web Design
7 4 (25.00%) SDLC
8 3 (18.75%) Coaching
8 3 (18.75%) Continuous Delivery
8 3 (18.75%) Continuous Integration
8 3 (18.75%) E-Commerce
8 3 (18.75%) Web Development
8 3 (18.75%) Wireframes
9 2 (12.50%) Configuration Management
9 2 (12.50%) Dependency Injection
10 1 (6.25%) MVC
10 1 (6.25%) OOP
10 1 (6.25%) Web Design
Programming Languages
1 10 (62.50%) JavaScript
2 9 (56.25%) Java
3 3 (18.75%) SQL
4 2 (12.50%) PHP
5 1 (6.25%) C#
5 1 (6.25%) PHP 5
5 1 (6.25%) R
Qualifications
1 1 (6.25%) Security Cleared
Systems Management
1 1 (6.25%) Systems Management Server (SMS)
Vendors
1 3 (18.75%) Oracle
2 1 (6.25%) Adobe