Period
to 18 November 2017

The following table provides summary statistics for contract job vacancies advertised in Leatherhead 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 18 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 > Leatherhead
6 months to
18 Nov 2017
Same period 2016 Same period 2015
Rank 26 22 41
Rank change year-on-year -4 +19 -
Contract jobs citing TDD 3 4 9
As % of all contract IT jobs advertised in Leatherhead 2.52% 2.92% 3.60%
As % of the Processes & Methodologies category 2.86% 3.74% 4.92%
Number of daily rates quoted 3 4 7
Leatherhead median daily rate £365 £438 £380
Median daily rate % change year-on-year -16.57% +15.13% -
10th Percentile £332 £365 £331
90th Percentile £373 £509 £525
Surrey median daily rate £494 £450 £413
% change year-on-year +9.72% +9.09% +26.92%
Number of hourly rates quoted 0 0 1
Leatherhead median hourly rate - - £40.00
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 Leatherhead with a requirement for process or methodology skills.

All Process and Methodology Skills
Leatherhead
Contract vacancies with a requirement for process or methodology skills 105 107 183
As % of all contract IT jobs advertised in Leatherhead 88.24% 78.10% 73.20%
Number of daily rates quoted 92 98 168
Leatherhead median daily rate £425 £475 £428
Median daily rate % change year-on-year -10.53% +11.11% -5.00%
10th Percentile £282 £274 £354
90th Percentile £538 £575 £525
Surrey median daily rate £450 £425 £400
% change year-on-year +5.88% +6.25% +6.67%
Number of hourly rates quoted 1 0 3
Leatherhead median hourly rate £42.50 - £18.50
10th Percentile £41.25 - £16.55
90th Percentile £43.75 - £37.85
Surrey median hourly rate £30.00 £27.50 £31.25
% change year-on-year +9.09% -12.00% +4.17%

TDD
Job Vacancy Trend in Leatherhead

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

Job vacancy trend for TDD in Leatherhead

TDD
Contractor Daily Rate Trend in Leatherhead

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

Contractor daily rate trend for TDD in Leatherhead

For the 6 months to 18 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 Leatherhead region with a requirement for TDD.

1 3 (100.00%) C#
1 3 (100.00%) HTML
1 3 (100.00%) JavaScript
1 3 (100.00%) T-SQL
1 3 (100.00%) .NET
1 3 (100.00%) CSS
1 3 (100.00%) Web Services
1 3 (100.00%) MSMQ
1 3 (100.00%) SOA
1 3 (100.00%) ECMAScript
1 3 (100.00%) Agile Software Development
1 3 (100.00%) .NET Framework
1 3 (100.00%) WCF
1 3 (100.00%) Unit Testing
1 3 (100.00%) JSUnit
1 3 (100.00%) HTML5
1 3 (100.00%) Entity Framework
1 3 (100.00%) REST
1 3 (100.00%) CSS3
1 3 (100.00%) NServiceBus
1 3 (100.00%) Sass
1 3 (100.00%) AngularJS
1 3 (100.00%) TypeScript
1 3 (100.00%) ASP.NET Web API
1 3 (100.00%) Domain-Driven Design
1 3 (100.00%) RESTful
1 3 (100.00%) SOLID
1 3 (100.00%) Front End Development
1 3 (100.00%) Angular 2
1 3 (100.00%) PostCSS

TDD
Co-occurring IT Skills in Leatherhead 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 3 (100.00%) NServiceBus
2 1 (33.33%) CMS
Cloud Services
1 2 (66.67%) SaaS
Development Applications
1 3 (100.00%) JSUnit
1 3 (100.00%) PostCSS
Job Titles
1 3 (100.00%) .NET Developer
1 3 (100.00%) Developer
2 2 (66.67%) .NET Web Developer
2 2 (66.67%) Agile .NET Developer
2 2 (66.67%) Agile C# Developer
2 2 (66.67%) Agile Developer
2 2 (66.67%) C# .NET Developer
2 2 (66.67%) C# Developer
2 2 (66.67%) C# WCF Developer
2 2 (66.67%) C# Web Developer
2 2 (66.67%) WCF Developer
2 2 (66.67%) Web Developer
3 1 (33.33%) Front End Developer (Client-Side Developer)
Libraries, Frameworks & Software Standards
1 3 (100.00%) .NET
1 3 (100.00%) .NET Framework
1 3 (100.00%) Angular 2
1 3 (100.00%) AngularJS
1 3 (100.00%) ASP.NET Web API
1 3 (100.00%) CSS
1 3 (100.00%) CSS3
1 3 (100.00%) Entity Framework
1 3 (100.00%) HTML
1 3 (100.00%) HTML5
1 3 (100.00%) MSMQ
1 3 (100.00%) REST
1 3 (100.00%) RESTful
1 3 (100.00%) Sass
1 3 (100.00%) WCF
1 3 (100.00%) Web Services
Miscellaneous
1 1 (33.33%) User Experience
Processes & Methodologies
1 3 (100.00%) Agile Software Development
1 3 (100.00%) Domain-Driven Design
1 3 (100.00%) Front End Development
1 3 (100.00%) SOA
1 3 (100.00%) SOLID
1 3 (100.00%) Unit Testing
2 2 (66.67%) Change Management
2 2 (66.67%) Web Development
Programming Languages
1 3 (100.00%) C#
1 3 (100.00%) ECMAScript
1 3 (100.00%) JavaScript
1 3 (100.00%) T-SQL
1 3 (100.00%) TypeScript