Period
to 17 November 2017

The following table provides summary statistics for contract job vacancies advertised in Slough 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)
Berkshire > Slough
6 months to
17 Nov 2017
Same period 2016 Same period 2015
Rank 24 32 34
Rank change year-on-year +8 +2 -14
Contract jobs citing TDD 11 11 15
As % of all contract IT jobs advertised in Slough 3.69% 3.46% 2.95%
As % of the Processes & Methodologies category 4.89% 4.44% 3.60%
Number of daily rates quoted 8 9 12
Slough median daily rate £400 £318 £388
Median daily rate % change year-on-year +25.79% -17.94% +17.42%
10th Percentile £341 £299 £306
90th Percentile £449 £332 £506
Berkshire median daily rate £400 £413 £375
% change year-on-year -3.03% +10.00% +7.14%
Number of hourly rates quoted 0 0 0
Slough median hourly rate - - -
Berkshire median hourly rate £8.00 £40.00 -
% change year-on-year -80.00% - -

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 Slough with a requirement for process or methodology skills.

All Process and Methodology Skills
Slough
Contract vacancies with a requirement for process or methodology skills 225 248 417
As % of all contract IT jobs advertised in Slough 75.50% 77.99% 81.93%
Number of daily rates quoted 155 158 272
Slough median daily rate £425 £363 £354
Median daily rate % change year-on-year +17.24% +2.47% +1.07%
10th Percentile £267 £225 £213
90th Percentile £568 £488 £510
Berkshire median daily rate £425 £400 £400
% change year-on-year +6.25% - +6.67%
Number of hourly rates quoted 4 10 10
Slough median hourly rate £15.75 £13.75 £23.75
Median hourly rate % change year-on-year +14.55% -42.11% +97.92%
10th Percentile £14.00 £8.50 £15.88
90th Percentile £34.30 £40.25 £43.75
Berkshire median hourly rate £14.50 £17.50 £30.90
% change year-on-year -17.14% -43.37% +81.02%

TDD
Job Vacancy Trend in Slough

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

Job vacancy trend for TDD in Slough

TDD
Contractor Daily Rate Trend in Slough

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

Contractor daily rate trend for TDD in Slough

TDD
Contractor Daily Rate Histogram in Slough

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

Contractor daily rate histogram for TDD in Slough

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 Slough region with a requirement for TDD.

1 8 (72.73%) .NET
2 7 (63.64%) C#
2 7 (63.64%) SQL
3 6 (54.55%) ASP.NET
3 6 (54.55%) MVC
3 6 (54.55%) Hibernate
3 6 (54.55%) Scrum
3 6 (54.55%) Agile Software Development
3 6 (54.55%) .NET Framework
3 6 (54.55%) Entity Framework
4 5 (45.45%) AngularJS
4 5 (45.45%) HTML5
4 5 (45.45%) Degree
4 5 (45.45%) JavaScript
4 5 (45.45%) HTML
4 5 (45.45%) CSS
5 4 (36.36%) OO
5 4 (36.36%) Computer Science
5 4 (36.36%) QA
5 4 (36.36%) Logistics
5 4 (36.36%) Software Engineering
5 4 (36.36%) jQuery
5 4 (36.36%) Microsoft Azure
5 4 (36.36%) Relational Database
5 4 (36.36%) CSS3
5 4 (36.36%) Computer Science Degree
6 3 (27.27%) Test Automation
6 3 (27.27%) RESTful
6 3 (27.27%) Java
7 2 (18.18%) J2EE

TDD
Co-occurring IT Skills in Slough 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 (18.18%) BizTalk Server
1 2 (18.18%) Oracle SOA Suite
Cloud Services
1 4 (36.36%) Microsoft Azure
2 2 (18.18%) SaaS
Communications & Networking
1 2 (18.18%) Internet
1 2 (18.18%) Intranet
Database & Business Intelligence
1 4 (36.36%) Relational Database
2 2 (18.18%) MySQL
2 2 (18.18%) SQL Server
2 2 (18.18%) SQL Server Integration Services
3 1 (9.09%) Big Data
3 1 (9.09%) NoSQL
3 1 (9.09%) Pentaho
Development Applications
1 2 (18.18%) ReSharper
2 1 (9.09%) JIRA
2 1 (9.09%) Octopus Deploy
2 1 (9.09%) TeamCity
2 1 (9.09%) Xcode
General
1 1 (9.09%) Finance
Job Titles
1 8 (72.73%) Developer
2 5 (45.45%) Software Developer
3 4 (36.36%) Full Stack Developer
4 3 (27.27%) Front End Developer (Client-Side Developer)
5 2 (18.18%) .NET Developer
5 2 (18.18%) Architect
5 2 (18.18%) ASP.NET Developer
5 2 (18.18%) ASP.NET MVC Developer
6 1 (9.09%) .NET Architect
6 1 (9.09%) Angular Developer
6 1 (9.09%) Development Manager
6 1 (9.09%) HTML Developer
6 1 (9.09%) iOS Developer
6 1 (9.09%) Silverlight Developer
6 1 (9.09%) Solutions Architect
6 1 (9.09%) Technical Development Manager
6 1 (9.09%) Technical Manager
Libraries, Frameworks & Software Standards
1 8 (72.73%) .NET
2 6 (54.55%) .NET Framework
2 6 (54.55%) ASP.NET
2 6 (54.55%) Entity Framework
2 6 (54.55%) Hibernate
3 5 (45.45%) AngularJS
3 5 (45.45%) CSS
3 5 (45.45%) HTML
3 5 (45.45%) HTML5
4 4 (36.36%) CSS3
4 4 (36.36%) jQuery
5 3 (27.27%) RESTful
6 2 (18.18%) ASP.NET MVC
6 2 (18.18%) AutoMapper
6 2 (18.18%) EJB
6 2 (18.18%) JPA
6 2 (18.18%) JSF
6 2 (18.18%) RabbitMQ
6 2 (18.18%) REST
6 2 (18.18%) Spring
Miscellaneous
1 4 (36.36%) Computer Science
2 2 (18.18%) Data Structures
3 1 (9.09%) Analytical Skills
3 1 (9.09%) Cloud Native
3 1 (9.09%) Greenfield Project
3 1 (9.09%) PMI
3 1 (9.09%) User Experience
3 1 (9.09%) Virtual Team
Operating Systems
1 2 (18.18%) HPUX
1 2 (18.18%) Linux
1 2 (18.18%) Unix
1 2 (18.18%) Windows
2 1 (9.09%) Apple iOS
Processes & Methodologies
1 6 (54.55%) Agile Software Development
1 6 (54.55%) MVC
1 6 (54.55%) Scrum
2 4 (36.36%) Logistics
2 4 (36.36%) OO
2 4 (36.36%) Software Engineering
3 3 (27.27%) Test Automation
4 2 (18.18%) Configuration Management
4 2 (18.18%) Data Modelling
4 2 (18.18%) Deployment Diagram
4 2 (18.18%) ETL
4 2 (18.18%) High Availability
4 2 (18.18%) MSF
4 2 (18.18%) OOD
4 2 (18.18%) Refactoring
4 2 (18.18%) SOA
4 2 (18.18%) TOGAF
4 2 (18.18%) Waterfall
4 2 (18.18%) Workflow
4 2 (18.18%) Zachman Framework
Programming Languages
1 7 (63.64%) C#
1 7 (63.64%) SQL
2 5 (45.45%) JavaScript
3 3 (27.27%) Java
4 1 (9.09%) Apple Swift
4 1 (9.09%) Kotlin
4 1 (9.09%) Objective-C
4 1 (9.09%) TypeScript
Qualifications
1 5 (45.45%) Degree
2 4 (36.36%) Computer Science Degree
3 1 (9.09%) PMI Certification
3 1 (9.09%) PMP
Quality Assurance & Compliance
1 4 (36.36%) QA
Systems Management
1 1 (9.09%) Ansible
1 1 (9.09%) Opscode Chef
Vendors
1 2 (18.18%) Cisco
1 2 (18.18%) Microsoft
1 2 (18.18%) Oracle
2 1 (9.09%) Apple
2 1 (9.09%) CA Agile Central