The following table provides summary statistics for contract job vacancies advertised in Oxford with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 3 months to 29 March 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)
Oxfordshire / Oxford
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 26 13 37
Rank change year-on-year -13 +24  
Contract jobs citing TDD 14 21 9
As % of all contract IT jobs advertised in Oxford 5.09% 8.94% 2.46%
As % of the Processes & Methodologies category 6.45% 10.82% 2.84%
Number of daily rates quoted 12 18 7
Median daily rate £500 £425 £410
Median daily rate % change year-on-year +17.64% +3.65%  
90% offered a daily rate of more than £405 £407 £325
10% offered a daily rate of more than £523 £453 £440
UK excluding London median daily rate £400 £400 £375
% change year-on-year - +6.66%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £39.00 £45.75 £36.00
% change year-on-year -14.75% +27.08%  

TDD is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Oxford with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Oxford
Contract job vacancies with a requirement for process and methodology skills 217 194 317
As % of all contract IT job vacancies advertised in Oxford 78.91% 82.55% 86.61%
Number of daily rates quoted 158 152 233
Median daily rate £475 £410 £425
Median daily rate % change year-on-year +15.85% -3.52%  
90% offered a daily rate of more than £185 £200 £275
10% offered a daily rate of more than £550 £500 £550
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 5 5 11
Median hourly rate £55.00 £35.00 £23.75
Median hourly rate % change year-on-year +57.14% +47.36%  
UK excluding London median hourly rate £35.75 £38.50 £30.00
% change year-on-year -7.14% +28.33%  

TDD
Job Vacancy Trend in Oxford

The job posting trend of jobs advertised in Oxford citing TDD as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for TDD in Oxford

TDD
Contractor Daily Rate Trend in Oxford

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

Contractor daily rate trend for TDD in Oxford

TDD
Contractor Daily Rate Histogram in Oxford

The daily rate distribution of IT jobs citing TDD in Oxford over the 3 months to 29 March 2017.

Contractor daily rate histogram for TDD in Oxford

TDD
Contractor Hourly Rate Trend in Oxford

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

Contractor hourly rate trend for TDD in Oxford

For the 6 months to 29 March 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 Oxford region with a requirement for TDD.

1 45 (88.24%) Agile Software Development
2 37 (72.55%) Java
3 30 (58.82%) Jenkins
4 28 (54.90%) Scrum
5 27 (52.94%) Continuous Integration
6 26 (50.98%) Java EE
7 25 (49.02%) SQL
8 24 (47.06%) Pair Programming
9 23 (45.10%) Spring
9 23 (45.10%) DevOps
10 22 (43.14%) Cucumber
10 22 (43.14%) JUnit
10 22 (43.14%) Unit Testing
11 21 (41.18%) Maven
11 21 (41.18%) Publishing
12 20 (39.22%) JBoss
13 19 (37.25%) WebSphere
13 19 (37.25%) Mockito
14 18 (35.29%) GitHub
14 18 (35.29%) BPEL
14 18 (35.29%) BPMN
14 18 (35.29%) Amazon AWS
15 15 (29.41%) WebSphere Application Server
15 15 (29.41%) Migration
15 15 (29.41%) BDD
16 14 (27.45%) JavaScript
17 13 (25.49%) WebSphere Process Server
18 12 (23.53%) Software Engineering
19 11 (21.57%) Alfresco
20 9 (17.65%) JIRA

TDD
Co-occurring IT Skills in Oxford 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 20 (39.22%) JBoss
2 19 (37.25%) WebSphere
3 15 (29.41%) WebSphere Application Server
4 13 (25.49%) WebSphere Process Server
5 11 (21.57%) Alfresco
6 4 (7.84%) Apache Spark
7 1 (1.96%) Elasticsearch
7 1 (1.96%) nginx
7 1 (1.96%) Oracle SOA Suite
7 1 (1.96%) Tomcat
Business Applications
1 2 (3.92%) Magento
2 1 (1.96%) Oracle BPM
Cloud Services
1 18 (35.29%) Amazon AWS
1 18 (35.29%) GitHub
2 2 (3.92%) AWS Lambda
3 1 (1.96%) Amazon ElastiCache
3 1 (1.96%) Amazon S3
3 1 (1.96%) AWS CloudFormation
3 1 (1.96%) Cloud Computing
3 1 (1.96%) Microsoft Azure
Database & Business Intelligence
1 7 (13.73%) Oracle Database
2 6 (11.76%) Data Warehouse
2 6 (11.76%) MongoDB
3 4 (7.84%) Big Data
3 4 (7.84%) Hadoop
4 3 (5.88%) MySQL
4 3 (5.88%) NoSQL
5 2 (3.92%) Amazon DynamoDB
6 1 (1.96%) Oracle Database 11g
6 1 (1.96%) SQL Server
6 1 (1.96%) SQL Server 2012
Development Applications
1 30 (58.82%) Jenkins
2 22 (43.14%) Cucumber
2 22 (43.14%) JUnit
3 21 (41.18%) Maven
4 19 (37.25%) Mockito
5 9 (17.65%) JIRA
5 9 (17.65%) Selenium
6 7 (13.73%) Talend Open Studio
7 6 (11.76%) Git (software)
8 4 (7.84%) Sonatype Nexus
9 2 (3.92%) Bitbucket
9 2 (3.92%) PHPUnit
9 2 (3.92%) WebDriver
10 1 (1.96%) Ant
10 1 (1.96%) Jasmine
10 1 (1.96%) Mocha
10 1 (1.96%) Protractor
10 1 (1.96%) SoapUI
10 1 (1.96%) Subversion
General
1 21 (41.18%) Publishing
Job Titles
1 40 (78.43%) Developer
2 21 (41.18%) Java Developer
3 12 (23.53%) Software Engineer
4 11 (21.57%) Java Engineer
4 11 (21.57%) Software Developer
5 10 (19.61%) Developer/Software Engineer
5 10 (19.61%) Java Software Developer
5 10 (19.61%) Java Software Engineer
6 7 (13.73%) AWS Developer
7 6 (11.76%) Agile Developer
7 6 (11.76%) Agile Java Developer
7 6 (11.76%) ETL Developer
8 5 (9.80%) PHP Developer
9 4 (7.84%) Test Leader
10 3 (5.88%) Data Warehouse Developer
10 3 (5.88%) Node.js Developer
10 3 (5.88%) QA Leader
10 3 (5.88%) Senior Developer
10 3 (5.88%) Senior Java Developer
10 3 (5.88%) Tester
Libraries, Frameworks & Software Standards
1 26 (50.98%) Java EE
2 23 (45.10%) Spring
3 9 (17.65%) RESTful
4 8 (15.69%) Node.js
5 7 (13.73%) SOAP
5 7 (13.73%) Web Services
6 6 (11.76%) AngularJS
6 6 (11.76%) CSS
6 6 (11.76%) HTML
6 6 (11.76%) JMS
6 6 (11.76%) JSON
6 6 (11.76%) REST
7 5 (9.80%) Hibernate
7 5 (9.80%) XML
8 4 (7.84%) Apache Camel
8 4 (7.84%) EJB
9 3 (5.88%) J2EE
9 3 (5.88%) Laravel
9 3 (5.88%) XML Schema
10 2 (3.92%) Symfony
Miscellaneous
1 2 (3.92%) Semantic Web
Operating Systems
1 1 (1.96%) Android
1 1 (1.96%) Apple iOS
1 1 (1.96%) Linux
Processes & Methodologies
1 45 (88.24%) Agile Software Development
2 28 (54.90%) Scrum
3 27 (52.94%) Continuous Integration
4 24 (47.06%) Pair Programming
5 23 (45.10%) DevOps
6 22 (43.14%) Unit Testing
7 18 (35.29%) BPEL
7 18 (35.29%) BPMN
8 15 (29.41%) BDD
8 15 (29.41%) Migration
9 12 (23.53%) Software Engineering
10 8 (15.69%) Kanban
11 7 (13.73%) Data Management
11 7 (13.73%) ETL
11 7 (13.73%) Kimball Methodology
12 6 (11.76%) Business Intelligence
12 6 (11.76%) MVC
12 6 (11.76%) Performance Tuning
13 5 (9.80%) Automated Testing
14 4 (7.84%) Informatics
Programming Languages
1 37 (72.55%) Java
2 25 (49.02%) SQL
3 14 (27.45%) JavaScript
4 8 (15.69%) PHP
5 5 (9.80%) Scala
6 4 (7.84%) Python
7 1 (1.96%) C#
7 1 (1.96%) R
7 1 (1.96%) XPath
Qualifications
1 2 (3.92%) Degree
Quality Assurance & Compliance
1 8 (15.69%) QA
2 3 (5.88%) Data Quality
System Software
1 5 (9.80%) Docker
Systems Management
1 4 (7.84%) Mesos
Vendors
1 9 (17.65%) Oracle
2 7 (13.73%) Talend
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