Period
to 19 November 2017

The following table provides summary statistics for contract job vacancies advertised in Cambridge 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 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)
Cambridgeshire > Cambridge
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 42 25 36
Rank change year-on-year -17 +11 -5
Contract jobs citing TDD 22 36 52
As % of all contract IT jobs advertised in Cambridge 3.18% 5.75% 5.37%
As % of the Processes & Methodologies category 3.81% 6.96% 6.48%
Number of daily rates quoted 42 18 41
Cambridge median daily rate £363 £394 £403
Median daily rate % change year-on-year -7.94% -2.17% -2.42%
10th Percentile £314 £325 £313
90th Percentile £425 £475 £513
Cambridgeshire median daily rate £363 £381 £406
% change year-on-year -4.92% -6.15% -1.52%
Number of hourly rates quoted 0 3 2
Cambridge median hourly rate - £40.00 £45.00
Median hourly rate % change year-on-year - -11.11% -
Cambridgeshire median hourly rate - £40.00 £45.00
% change year-on-year - -11.11% -

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 Cambridge with a requirement for process or methodology skills.

All Process and Methodology Skills
Cambridge
Contract vacancies with a requirement for process or methodology skills 578 517 803
As % of all contract IT jobs advertised in Cambridge 83.53% 82.59% 82.95%
Number of daily rates quoted 321 265 545
Cambridge median daily rate £375 £400 £388
Median daily rate % change year-on-year -6.25% +3.23% +6.90%
10th Percentile £219 £255 £263
90th Percentile £573 £550 £525
Cambridgeshire median daily rate £375 £388 £385
% change year-on-year -3.23% +0.65% +6.21%
Number of hourly rates quoted 78 53 33
Cambridge median hourly rate £40.50 £39.25 £38.75
Median hourly rate % change year-on-year +3.18% +1.29% +40.91%
10th Percentile £17.09 £14.63 £13.20
90th Percentile £52.88 £59.50 £60.00
Cambridgeshire median hourly rate £39.00 £37.50 £17.50
% change year-on-year +4.00% +114.29% -36.36%

TDD
Job Vacancy Trend in Cambridge

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

Job vacancy trend for TDD in Cambridge

TDD
Contractor Daily Rate Trend in Cambridge

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

Contractor daily rate trend for TDD in Cambridge

TDD
Contractor Daily Rate Histogram in Cambridge

The daily rate distribution of IT jobs citing TDD in Cambridge over the 6 months to 19 November 2017.

Contractor daily rate histogram for TDD in Cambridge

TDD
Contractor Hourly Rate Trend in Cambridge

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Cambridge.

Contractor hourly rate trend for TDD in Cambridge

For the 6 months to 19 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 Cambridge region with a requirement for TDD.

1 20 (90.91%) Agile Software Development
2 13 (59.09%) C#
3 12 (54.55%) .NET
4 11 (50.00%) MVC
5 10 (45.45%) Continuous Integration
6 9 (40.91%) SDLC
6 9 (40.91%) ASP.NET Web API
6 9 (40.91%) SOLID
6 9 (40.91%) JavaScript
7 8 (36.36%) SQL Server
7 8 (36.36%) Microsoft
7 8 (36.36%) Finance
8 7 (31.82%) Java
8 7 (31.82%) Team Foundation Server
8 7 (31.82%) WCF
8 7 (31.82%) BDD
9 6 (27.27%) SQL Server Integration Services
9 6 (27.27%) SQL Server Reporting Services
9 6 (27.27%) Enterprise Software
10 5 (22.73%) HTML
10 5 (22.73%) Microsoft Azure
10 5 (22.73%) REST
10 5 (22.73%) AngularJS
11 4 (18.18%) Web Development
11 4 (18.18%) WPF
11 4 (18.18%) jQuery
11 4 (18.18%) Domain-Driven Design
11 4 (18.18%) RESTful
11 4 (18.18%) SQL
11 4 (18.18%) Spring

TDD
Co-occurring IT Skills in Cambridge 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 (4.55%) CMS
1 1 (4.55%) Oracle SOA Suite
Business Applications
1 2 (9.09%) Oracle ERP
1 2 (9.09%) Payment Gateway
Cloud Services
1 5 (22.73%) Microsoft Azure
2 2 (9.09%) Amazon AWS
3 1 (4.55%) Amazon CloudSearch
3 1 (4.55%) Amazon S3
3 1 (4.55%) GitHub
3 1 (4.55%) OpenShift
Database & Business Intelligence
1 8 (36.36%) SQL Server
2 6 (27.27%) SQL Server Integration Services
2 6 (27.27%) SQL Server Reporting Services
3 3 (13.64%) Relational Database
4 2 (9.09%) MongoDB
4 2 (9.09%) NoSQL
4 2 (9.09%) PostgreSQL
4 2 (9.09%) RDBMS
5 1 (4.55%) Azure SQL Database
Development Applications
1 7 (31.82%) Team Foundation Server
2 3 (13.64%) Atlassian Bamboo
2 3 (13.64%) Git (software)
2 3 (13.64%) Jenkins
3 2 (9.09%) IntelliJ
3 2 (9.09%) JUnit
3 2 (9.09%) Maven
3 2 (9.09%) Mercurial
3 2 (9.09%) Mockito
3 2 (9.09%) WebStorm
4 1 (4.55%) Cucumber
4 1 (4.55%) Jasmine
4 1 (4.55%) Mocha
4 1 (4.55%) Octopus Deploy
4 1 (4.55%) Selenium
4 1 (4.55%) Subversion
4 1 (4.55%) TeamCity
4 1 (4.55%) webpack
General
1 8 (36.36%) Finance
Job Titles
1 17 (77.27%) Developer
2 11 (50.00%) .NET Developer
3 10 (45.45%) Full Stack Developer
4 9 (40.91%) C# Developer
5 8 (36.36%) ASP.NET MVC Developer
5 8 (36.36%) C# .NET Developer
6 7 (31.82%) SQL Developer
6 7 (31.82%) SQL Server Developer
7 6 (27.27%) C# WCF Developer
7 6 (27.27%) SSIS Developer
7 6 (27.27%) SSRS Developer
7 6 (27.27%) WCF Developer
8 4 (18.18%) Web Developer
9 3 (13.64%) Angular Developer
9 3 (13.64%) Java Developer
10 2 (9.09%) Agile Developer
10 2 (9.09%) ERP Analyst
10 2 (9.09%) ERP Business Analyst
10 2 (9.09%) Full Stack Web Developer
10 2 (9.09%) Oracle Business Analyst
Libraries, Frameworks & Software Standards
1 12 (54.55%) .NET
2 9 (40.91%) ASP.NET Web API
3 7 (31.82%) WCF
4 5 (22.73%) AngularJS
4 5 (22.73%) HTML
4 5 (22.73%) REST
5 4 (18.18%) jQuery
5 4 (18.18%) RESTful
5 4 (18.18%) Spring
5 4 (18.18%) WPF
6 3 (13.64%) HTML5
6 3 (13.64%) JSON
6 3 (13.64%) Node.js
6 3 (13.64%) Web Services
6 3 (13.64%) XML
6 3 (13.64%) XML Schema
6 3 (13.64%) XSLT
7 2 (9.09%) CSS
7 2 (9.09%) Entity Framework
7 2 (9.09%) Hibernate
Miscellaneous
1 6 (27.27%) Enterprise Software
2 3 (13.64%) Greenfield Project
3 2 (9.09%) Life Science
3 2 (9.09%) User Experience
4 1 (4.55%) Data Centre
4 1 (4.55%) e-Learning
Processes & Methodologies
1 20 (90.91%) Agile Software Development
2 11 (50.00%) MVC
3 10 (45.45%) Continuous Integration
4 9 (40.91%) SDLC
4 9 (40.91%) SOLID
5 7 (31.82%) BDD
6 4 (18.18%) Domain-Driven Design
6 4 (18.18%) Microservices
6 4 (18.18%) Migration
6 4 (18.18%) Scrum
6 4 (18.18%) Web Development
7 3 (13.64%) OO
7 3 (13.64%) Performance Tuning
8 2 (9.09%) Business Analysis
8 2 (9.09%) ERP
8 2 (9.09%) Information Security
8 2 (9.09%) OOP
8 2 (9.09%) SOA
8 2 (9.09%) Stakeholder Management
8 2 (9.09%) Test Automation
Programming Languages
1 13 (59.09%) C#
2 9 (40.91%) JavaScript
3 7 (31.82%) Java
4 4 (18.18%) SQL
4 4 (18.18%) TypeScript
5 3 (13.64%) Scala
6 2 (9.09%) Groovy
7 1 (4.55%) C
7 1 (4.55%) C++
7 1 (4.55%) Clojure
7 1 (4.55%) Dart
7 1 (4.55%) Elixir
7 1 (4.55%) Erlang
7 1 (4.55%) F#
7 1 (4.55%) Haskell
7 1 (4.55%) Objective-C
7 1 (4.55%) PHP
7 1 (4.55%) PL/SQL
7 1 (4.55%) Python
7 1 (4.55%) Rust
Qualifications
1 2 (9.09%) Degree
2 1 (4.55%) DV Cleared
2 1 (4.55%) Security Cleared
Quality Assurance & Compliance
1 1 (4.55%) QA
System Software
1 2 (9.09%) Docker
Systems Management
1 1 (4.55%) Kubernetes
1 1 (4.55%) Packer
1 1 (4.55%) Terraform
Vendors
1 8 (36.36%) Microsoft
2 3 (13.64%) Oracle
3 1 (4.55%) Google
3 1 (4.55%) Twitter