Period
to 17 November 2017

The following table provides summary statistics for contract job vacancies advertised in Staines 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 17 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)
Surrey > Staines
6 months to
17 Nov 2017
Same period 2016 Same period 2015
Rank 28 28 28
Rank change year-on-year 0 0 +6
Contract jobs citing TDD 6 18 14
As % of all contract IT jobs advertised in Staines 2.29% 5.88% 4.73%
As % of the Processes & Methodologies category 2.54% 6.25% 5.49%
Number of daily rates quoted 5 3 1
Staines median daily rate £475 £500 £375
Median daily rate % change year-on-year -5.00% +33.33% +11.11%
10th Percentile £363 £390 £363
90th Percentile £538 £500 £388
Surrey median daily rate £480 £460 £413
% change year-on-year +4.35% +11.52% +26.92%
Number of hourly rates quoted 0 0 0
Staines median hourly rate - - -
Surrey median hourly rate - - £40.00

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 Staines with a requirement for process or methodology skills.

All Process and Methodology Skills
Staines
Contract vacancies with a requirement for process or methodology skills 236 288 255
As % of all contract IT jobs advertised in Staines 90.08% 94.12% 86.15%
Number of daily rates quoted 121 102 50
Staines median daily rate £475 £444 £438
Median daily rate % change year-on-year +7.04% +1.43% +12.90%
10th Percentile £363 £263 £281
90th Percentile £575 £575 £565
Surrey median daily rate £450 £425 £400
% change year-on-year +5.88% +6.25% +6.67%
Number of hourly rates quoted 13 3 7
Staines median hourly rate £45.00 £40.00 £40.00
Median hourly rate % change year-on-year +12.50% - -19.19%
10th Percentile £18.50 £35.50 £13.35
90th Percentile £47.50 £49.00 £48.00
Surrey median hourly rate £30.00 £28.75 £31.25
% change year-on-year +4.35% -8.00% +4.17%

TDD
Job Vacancy Trend in Staines

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

Job vacancy trend for TDD in Staines

TDD
Contractor Daily Rate Trend in Staines

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

Contractor daily rate trend for TDD in Staines

TDD
Contractor Daily Rate Histogram in Staines

The daily rate distribution of IT jobs citing TDD in Staines over the 6 months to 17 November 2017.

Contractor daily rate histogram for TDD in Staines

For the 6 months to 17 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 Staines region with a requirement for TDD.

1 6 (100.00%) Agile Software Development
2 4 (66.67%) JavaScript
3 3 (50.00%) HTML
3 3 (50.00%) CSS
3 3 (50.00%) Software Engineering
4 2 (33.33%) Refactoring
4 2 (33.33%) QA
4 2 (33.33%) WCF
4 2 (33.33%) Continuous Integration
4 2 (33.33%) OO
4 2 (33.33%) OOD
4 2 (33.33%) Java
4 2 (33.33%) SQL
4 2 (33.33%) .NET
4 2 (33.33%) SQL Server
4 2 (33.33%) ASP.NET
4 2 (33.33%) Team Foundation Server
4 2 (33.33%) Test Automation
4 2 (33.33%) MVC
4 2 (33.33%) Scrum
4 2 (33.33%) Microsoft Azure
4 2 (33.33%) ASP.NET MVC
4 2 (33.33%) BDD
4 2 (33.33%) Node.js
4 2 (33.33%) ATDD
4 2 (33.33%) Data Structures
4 2 (33.33%) React
4 2 (33.33%) API Development
4 2 (33.33%) SOLID
4 2 (33.33%) Analytics

TDD
Co-occurring IT Skills in Staines 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:

Cloud Services
1 2 (33.33%) Microsoft Azure
Database & Business Intelligence
1 2 (33.33%) SQL Server
Development Applications
1 2 (33.33%) Team Foundation Server
Job Titles
1 6 (100.00%) Developer
2 2 (33.33%) .NET Developer
2 2 (33.33%) Agile .NET Developer
2 2 (33.33%) Agile Developer
2 2 (33.33%) ASP.NET MVC Developer
2 2 (33.33%) Java Developer
2 2 (33.33%) JavaScript Developer
3 1 (16.67%) Applications Developer
3 1 (16.67%) HTML CSS Developer
3 1 (16.67%) HTML Developer
3 1 (16.67%) Mobile Applications Developer
Libraries, Frameworks & Software Standards
1 3 (50.00%) CSS
1 3 (50.00%) HTML
2 2 (33.33%) .NET
2 2 (33.33%) ASP.NET
2 2 (33.33%) ASP.NET MVC
2 2 (33.33%) Node.js
2 2 (33.33%) React
2 2 (33.33%) WCF
3 1 (16.67%) AngularJS
3 1 (16.67%) Aurelia
3 1 (16.67%) React Native
3 1 (16.67%) Redux
3 1 (16.67%) RESTful
Miscellaneous
1 2 (33.33%) Data Structures
2 1 (16.67%) Cloud Native
2 1 (16.67%) Mobile App
Processes & Methodologies
1 6 (100.00%) Agile Software Development
2 3 (50.00%) Software Engineering
3 2 (33.33%) Analytics
3 2 (33.33%) API Development
3 2 (33.33%) ATDD
3 2 (33.33%) BDD
3 2 (33.33%) Continuous Integration
3 2 (33.33%) MVC
3 2 (33.33%) OO
3 2 (33.33%) OOD
3 2 (33.33%) Refactoring
3 2 (33.33%) Scrum
3 2 (33.33%) SOLID
3 2 (33.33%) Test Automation
4 1 (16.67%) Front End Development
4 1 (16.67%) Kanban
4 1 (16.67%) Open Source
4 1 (16.67%) Time Management
Programming Languages
1 4 (66.67%) JavaScript
2 2 (33.33%) C#
2 2 (33.33%) Java
2 2 (33.33%) SQL
Quality Assurance & Compliance
1 2 (33.33%) QA