Period
to 19 January 2018

The following table provides summary statistics for contract job vacancies advertised in Norwich 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 January 2018 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)
Norfolk > Norwich
6 months to
19 Jan 2018
Same period 2017 Same period 2016
Rank 20 22 29
Rank change year-on-year +2 +7 -3
Contract jobs citing TDD 17 1 9
As % of all contract IT jobs advertised in Norwich 8.13% 0.69% 3.42%
As % of the Processes & Methodologies category 9.94% 0.84% 4.50%
Number of daily rates quoted 9 1 6
Norwich median daily rate £400 £325 £300
Median daily rate % change year-on-year +23.08% +8.33% +4.35%
10th Percentile £313 £313 £263
90th Percentile £428 £338 £463
Norfolk median daily rate £363 £350 £275
% change year-on-year +3.57% +27.27% -8.33%
Number of hourly rates quoted 0 0 0
Norwich median hourly rate - - -
Norfolk 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 Norwich with a requirement for process or methodology skills.

All Process and Methodology Skills
Norwich
Contract vacancies with a requirement for process or methodology skills 171 119 200
As % of all contract IT jobs advertised in Norwich 81.82% 82.64% 76.05%
Number of daily rates quoted 108 77 136
Norwich median daily rate £400 £400 £375
Median daily rate % change year-on-year - +6.67% +15.38%
10th Percentile £194 £188 £219
90th Percentile £532 £575 £544
Norfolk median daily rate £425 £375 £400
% change year-on-year +13.33% -6.25% +23.08%
Number of hourly rates quoted 4 2 14
Norwich median hourly rate £12.26 £16.50 £23.00
Median hourly rate % change year-on-year -25.70% -28.26% +6.98%
10th Percentile £10.99 £15.25 £17.00
90th Percentile £24.02 £17.75 £27.20
Norfolk median hourly rate £12.26 £16.50 £23.00
% change year-on-year -25.70% -28.26% +21.05%

TDD
Job Vacancy Trend in Norwich

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

Job vacancy trend for TDD in Norwich

TDD
Contractor Daily Rate Trend in Norwich

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

Contractor daily rate trend for TDD in Norwich

For the 6 months to 19 January 2018, 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 Norwich region with a requirement for TDD.

1 15 (88.24%) BDD
1 15 (88.24%) Jenkins
2 14 (82.35%) Continuous Integration
3 13 (76.47%) Agile Software Development
4 11 (64.71%) C#
4 11 (64.71%) Git (software)
4 11 (64.71%) Software Engineering
5 9 (52.94%) SOAP
5 9 (52.94%) Scrum
5 9 (52.94%) REST
6 8 (47.06%) HTML5
6 8 (47.06%) Continuous Improvement
6 8 (47.06%) HTML
7 7 (41.18%) JavaScript
7 7 (41.18%) .NET
7 7 (41.18%) Web Services
7 7 (41.18%) XML
7 7 (41.18%) MVC
7 7 (41.18%) Maven
7 7 (41.18%) .NET Framework
7 7 (41.18%) SOLID
8 6 (35.29%) Xamarin
9 5 (29.41%) Responsive Web Design
9 5 (29.41%) Web Development
9 5 (29.41%) Finance
10 4 (23.53%) Team Foundation Server
10 4 (23.53%) RESTful
10 4 (23.53%) Subversion
10 4 (23.53%) Mobile App
10 4 (23.53%) MVVM

TDD
Co-occurring IT Skills in Norwich 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 (11.76%) Apache
1 2 (11.76%) Drupal
1 2 (11.76%) WordPress
2 1 (5.88%) Adobe Experience Manager
Applications
1 2 (11.76%) Fireworks
1 2 (11.76%) Photoshop
Cloud Services
1 2 (11.76%) Amazon AWS
1 2 (11.76%) Microsoft Azure
Database & Business Intelligence
1 3 (17.65%) MySQL
2 1 (5.88%) MarkLogic
2 1 (5.88%) NoSQL
2 1 (5.88%) Relational Database
Development Applications
1 15 (88.24%) Jenkins
2 11 (64.71%) Git (software)
3 7 (41.18%) Maven
4 4 (23.53%) Subversion
4 4 (23.53%) Team Foundation Server
5 3 (17.65%) Visual Studio
6 2 (11.76%) Codeception
6 2 (11.76%) Mockito
6 2 (11.76%) PHPUnit
6 2 (11.76%) QUnit
6 2 (11.76%) SonarQube
7 1 (5.88%) CruiseControl
7 1 (5.88%) Cucumber
7 1 (5.88%) FxCop
7 1 (5.88%) JUnit
7 1 (5.88%) ReSharper
7 1 (5.88%) StyleCop
General
1 5 (29.41%) Finance
2 3 (17.65%) Banking
2 3 (17.65%) Law
3 1 (5.88%) Publishing
Job Titles
1 17 (100.00%) Developer
2 7 (41.18%) .NET Developer
2 7 (41.18%) ASP.NET MVC Developer
3 6 (35.29%) Xamarin Developer
4 2 (11.76%) Front End Developer (Client-Side Developer)
4 2 (11.76%) PHP Developer
5 1 (5.88%) ASP.NET Developer
5 1 (5.88%) C# .NET Developer
5 1 (5.88%) C# ASP.NET Developer
5 1 (5.88%) C# Developer
5 1 (5.88%) Developer/Software Engineer
5 1 (5.88%) Java Developer
5 1 (5.88%) Mobile Engineer
5 1 (5.88%) Mobile Software Engineer
5 1 (5.88%) Software Engineer
Libraries, Frameworks & Software Standards
1 9 (52.94%) REST
1 9 (52.94%) SOAP
2 8 (47.06%) HTML
2 8 (47.06%) HTML5
3 7 (41.18%) .NET
3 7 (41.18%) .NET Framework
3 7 (41.18%) Web Services
3 7 (41.18%) XML
4 4 (23.53%) RESTful
5 3 (17.65%) CSS
5 3 (17.65%) CSS3
5 3 (17.65%) jQuery
5 3 (17.65%) XSLT
6 2 (11.76%) Apache Cordova
6 2 (11.76%) Behat
6 2 (11.76%) LAMP
6 2 (11.76%) PhoneGap
6 2 (11.76%) Sass
6 2 (11.76%) Symfony
7 1 (5.88%) ASP.NET MVC 5
Miscellaneous
1 4 (23.53%) Mobile App
Operating Systems
1 3 (17.65%) Android
1 3 (17.65%) Apple iOS
2 2 (11.76%) Linux
Processes & Methodologies
1 15 (88.24%) BDD
2 14 (82.35%) Continuous Integration
3 13 (76.47%) Agile Software Development
4 11 (64.71%) Software Engineering
5 9 (52.94%) Scrum
6 8 (47.06%) Continuous Improvement
7 7 (41.18%) MVC
7 7 (41.18%) SOLID
8 5 (29.41%) Responsive Web Design
8 5 (29.41%) Web Development
9 4 (23.53%) MVVM
10 3 (17.65%) Asset Management
10 3 (17.65%) Cross-Browser Compatibility
10 3 (17.65%) Information Management
10 3 (17.65%) Risk Management
10 3 (17.65%) Unit Testing
11 2 (11.76%) Compatibility Testing
11 2 (11.76%) Dependency Injection
11 2 (11.76%) Performance Analysis
11 2 (11.76%) Wireframes
Programming Languages
1 11 (64.71%) C#
2 7 (41.18%) JavaScript
3 2 (11.76%) Java
3 2 (11.76%) PHP
3 2 (11.76%) XPath
Quality Assurance & Compliance
1 2 (11.76%) WAI
1 2 (11.76%) WCAG
Vendors
1 6 (35.29%) Xamarin
2 1 (5.88%) Adobe
2 1 (5.88%) Coverity
2 1 (5.88%) Microsoft