Period
to 24 April 2019

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 24 April 2019 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
24 Apr 2019
Same period 2018 Same period 2017
Rank 44 32 36
Rank change year-on-year -12 +4 +4
Contract jobs citing TDD 23 23 24
As % of all contract IT jobs advertised in Cambridge 3.34% 4.29% 3.60%
As % of the Processes & Methodologies category 3.88% 4.95% 4.18%
Number of daily rates quoted 16 12 13
Cambridge median daily rate £445 £488 £363
Median daily rate % change year-on-year -8.72% +34.48% -23.68%
10th Percentile £263 £330 £265
90th Percentile £493 £525 £465
Cambridgeshire median daily rate £445 £485 £350
% change year-on-year -8.25% +38.57% -17.65%
Number of hourly rates quoted 0 0 0
Cambridge median hourly rate - - -
Cambridgeshire median hourly rate - £55.00 -

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 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 593 465 574
As % of all contract IT jobs advertised in Cambridge 86.19% 86.75% 86.06%
Number of daily rates quoted 351 257 273
Cambridge median daily rate £448 £420 £375
Median daily rate % change year-on-year +6.55% +12.00% -9.09%
10th Percentile £263 £273 £205
90th Percentile £613 £555 £550
Cambridgeshire median daily rate £450 £425 £375
% change year-on-year +5.88% +13.33% -9.09%
Number of hourly rates quoted 41 40 92
Cambridge median hourly rate £42.50 £41.25 £35.00
Median hourly rate % change year-on-year +3.03% +17.86% -12.77%
10th Percentile £12.25 £11.35 £12.05
90th Percentile £52.50 £50.03 £47.50
Cambridgeshire median hourly rate £17.00 £21.50 £33.50
% change year-on-year -20.93% -35.82% -10.67%

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 24 April 2019.

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 24 April 2019, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the Cambridge region with a requirement for TDD.

1 17 (73.91%) Agile Software Development
2 10 (43.48%) Software Engineering
2 10 (43.48%) Python
3 9 (39.13%) Continuous Integration
3 9 (39.13%) BDD
4 8 (34.78%) Jenkins
4 8 (34.78%) React
4 8 (34.78%) Test Automation
4 8 (34.78%) JavaScript
5 7 (30.43%) HTML
5 7 (30.43%) Java
5 7 (30.43%) CSS
5 7 (30.43%) Linux
5 7 (30.43%) Internet
5 7 (30.43%) Scrum
5 7 (30.43%) ES6
6 6 (26.09%) Redux
6 6 (26.09%) GraphQL
6 6 (26.09%) Machine Learning
6 6 (26.09%) Data Visualisation
6 6 (26.09%) WebGL
6 6 (26.09%) D3.js
6 6 (26.09%) Big Data
6 6 (26.09%) Visualisation
7 5 (21.74%) Embedded Linux
7 5 (21.74%) Selenium
7 5 (21.74%) Web Services
7 5 (21.74%) Node.js
7 5 (21.74%) Atlassian Bamboo
7 5 (21.74%) Git (software)

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 3 (13.04%) Confluence
1 3 (13.04%) SharePoint
Applications
1 3 (13.04%) MS Visio
Cloud Services
1 1 (4.35%) Amazon AWS
1 1 (4.35%) Microsoft Azure
Communications & Networking
1 7 (30.43%) Internet
Database & Business Intelligence
1 6 (26.09%) Big Data
2 3 (13.04%) Data Lake
2 3 (13.04%) Data Warehouse
2 3 (13.04%) SQL Server
3 1 (4.35%) RDBMS
3 1 (4.35%) Relational Database
Development Applications
1 8 (34.78%) Jenkins
2 5 (21.74%) Atlassian Bamboo
2 5 (21.74%) Cucumber
2 5 (21.74%) Git (software)
2 5 (21.74%) Selenium
3 3 (13.04%) ER Studio
3 3 (13.04%) ERwin
3 3 (13.04%) JIRA
4 2 (8.70%) Hudson
4 2 (8.70%) LabVIEW
General
1 1 (4.35%) Finance
Job Titles
1 7 (30.43%) Software Engineer
2 6 (26.09%) Test Engineer
3 4 (17.39%) Python Engineer
4 3 (13.04%) Architect
4 3 (13.04%) Big Data Engineer
4 3 (13.04%) Big Data Software Engineer
4 3 (13.04%) Developer
4 3 (13.04%) JavaScript Engineer
5 2 (8.70%) Data Architect
5 2 (8.70%) Information Architect
6 1 (4.35%) .NET Developer
6 1 (4.35%) Data Modeller
6 1 (4.35%) JavaScript Developer
6 1 (4.35%) Python Developer
6 1 (4.35%) Senior Developer
6 1 (4.35%) Senior Python Developer
6 1 (4.35%) Software Development Engineer
6 1 (4.35%) Software Test Engineer
6 1 (4.35%) Test Development Engineer
6 1 (4.35%) Web Engineer
Libraries, Frameworks & Software Standards
1 8 (34.78%) React
2 7 (30.43%) CSS
2 7 (30.43%) HTML
3 6 (26.09%) D3.js
3 6 (26.09%) GraphQL
3 6 (26.09%) Redux
3 6 (26.09%) WebGL
4 5 (21.74%) Gherkin
4 5 (21.74%) Node.js
4 5 (21.74%) Web Services
5 4 (17.39%) Django
6 3 (13.04%) .NET
7 2 (8.70%) Hibernate
7 2 (8.70%) JSP
7 2 (8.70%) Spring
8 1 (4.35%) ASP.NET
8 1 (4.35%) Pyramid
8 1 (4.35%) Ruby on Rails
8 1 (4.35%) WPF
Miscellaneous
1 5 (21.74%) Greenfield Project
2 4 (17.39%) Internet of Things
2 4 (17.39%) Smart City
Operating Systems
1 7 (30.43%) Linux
2 5 (21.74%) Embedded Linux
3 2 (8.70%) CentOS
3 2 (8.70%) Debian
Processes & Methodologies
1 17 (73.91%) Agile Software Development
2 10 (43.48%) Software Engineering
3 9 (39.13%) BDD
3 9 (39.13%) Continuous Integration
4 8 (34.78%) Test Automation
5 7 (30.43%) Scrum
6 6 (26.09%) Data Visualisation
6 6 (26.09%) Machine Learning
6 6 (26.09%) Visualisation
7 4 (17.39%) System Testing
8 3 (13.04%) Data Analysis
8 3 (13.04%) Data Architecture
8 3 (13.04%) Data Extraction
8 3 (13.04%) Data Mapping
8 3 (13.04%) Data Modelling
8 3 (13.04%) Kanban
8 3 (13.04%) Regression Testing
8 3 (13.04%) SOA
8 3 (13.04%) TOGAF
8 3 (13.04%) User Acceptance Testing
Programming Languages
1 10 (43.48%) Python
2 8 (34.78%) JavaScript
3 7 (30.43%) ES6
3 7 (30.43%) Java
4 3 (13.04%) C#
5 1 (4.35%) Ruby
Quality Assurance & Compliance
1 3 (13.04%) Data Quality
System Software
1 2 (8.70%) Docker
Systems Management
1 1 (4.35%) Kubernetes
Vendors
1 3 (13.04%) Embarcadero
2 2 (8.70%) Red Hat