Period
to 12 June 2021

The following table provides summary statistics for contract job vacancies advertised in Yorkshire 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 12 June 2021 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)
England > Yorkshire
6 months to
12 Jun 2021
Same period 2020 Same period 2019
Rank 54 36 31
Rank change year-on-year -18 -5 -19
Contract jobs citing TDD 52 97 261
As % of all contract jobs advertised in Yorkshire 2.70% 4.91% 5.92%
As % of the Processes & Methodologies category 3.13% 5.85% 6.89%
Number of daily rates quoted 40 81 206
10th Percentile £362 £325 £363
25th Percentile £406 £406 £425
Median daily rate (50th Percentile) £500 £525 £500
Median % change year-on-year -4.76% +5.00% +17.65%
75th Percentile £562 £550 £544
90th Percentile £638 £625 £581
England median daily rate £550 £525 £525
% change year-on-year +4.76% - +5.00%

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 Yorkshire with a requirement for process or methodology skills.

All Process and Methodology Skills
Yorkshire
Contract vacancies with a requirement for process or methodology skills 1,661 1,659 3,787
As % of all contract IT jobs advertised in Yorkshire 86.24% 84.04% 85.83%
Number of daily rates quoted 1,160 1,130 2,609
10th Percentile £255 £300 £263
25th Percentile £362 £363 £350
Median daily rate (50th Percentile) £450 £450 £425
Median % change year-on-year - +5.88% +6.25%
75th Percentile £550 £538 £513
90th Percentile £605 £613 £575
England median daily rate £500 £475 £475
% change year-on-year +5.26% - +2.70%
Number of hourly rates quoted 80 85 132
10th Percentile £11.38 £11.24 £11.18
25th Percentile £15.80 £14.50 £14.00
Median hourly rate £21.25 £18.00 £16.18
Median % change year-on-year +18.06% +11.27% -7.66%
75th Percentile £26.00 £22.75 £21.50
90th Percentile £30.05 £30.20 £31.25
England median hourly rate £24.00 £22.00 £22.86
% change year-on-year +9.09% -3.76% +8.86%

TDD
Job Vacancy Trend in Yorkshire

Job postings citing TDD as a proportion of all IT jobs advertised in Yorkshire.

Job vacancy trend for TDD in Yorkshire

TDD
Contractor Daily Rate Trend in Yorkshire

3-month moving average daily rate quoted in jobs citing TDD in Yorkshire.

Daily rate trend for TDD in Yorkshire

TDD
Daily Rate Histogram in Yorkshire

Daily rate distribution for jobs citing TDD in Yorkshire over the 6 months to 12 June 2021.

Daily rate histogram for TDD in Yorkshire

TDD
Contractor Hourly Rate Trend in Yorkshire

3-month moving average hourly rates quoted in jobs citing TDD in Yorkshire.

Hourly rate trend for TDD in Yorkshire

TDD
Contract Job Locations in Yorkshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Yorkshire region over the 6 months to 12 June 2021. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
West Yorkshire -10 49 £500 -4.76% 32
North Yorkshire +9 1 - - 3
South Yorkshire +7 1 £425 -10.53% 9
TDD
England

For the 6 months to 12 June 2021, 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 Yorkshire region with a requirement for TDD.

1 46 (88.46%) Agile Software Development
2 30 (57.69%) BDD
3 20 (38.46%) JavaScript
4 19 (36.54%) Test Automation
5 16 (30.77%) Continuous Integration
5 16 (30.77%) DevOps
6 15 (28.85%) Node.js
6 15 (28.85%) AWS
6 15 (28.85%) Java
7 14 (26.92%) Pair Programming
7 14 (26.92%) React
8 12 (23.08%) Python
8 12 (23.08%) Azure
8 12 (23.08%) Social Skills
9 11 (21.15%) CSS
9 11 (21.15%) Scrum
9 11 (21.15%) Microservices
10 10 (19.23%) SQL
10 10 (19.23%) Unit Testing
10 10 (19.23%) Public Sector
11 9 (17.31%) Selenium
11 9 (17.31%) Mentoring
11 9 (17.31%) Continuous Improvement
12 8 (15.38%) Open Source
12 8 (15.38%) Kanban
12 8 (15.38%) Git (software)
12 8 (15.38%) HTML
12 8 (15.38%) Linux
13 7 (13.46%) Degree
13 7 (13.46%) Coaching

TDD
Co-occurring IT Skills in Yorkshire 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 5 (9.62%) Apache Spark
1 5 (9.62%) Confluence
2 3 (5.77%) Apache
3 1 (1.92%) Cloud Foundry
3 1 (1.92%) CMS
Cloud Services
1 15 (28.85%) AWS
2 12 (23.08%) Azure
3 4 (7.69%) AWS Lambda
3 4 (7.69%) Serverless
4 3 (5.77%) Amazon S3
4 3 (5.77%) GitHub
5 2 (3.85%) Cloud Computing
5 2 (3.85%) GCP
6 1 (1.92%) Azure Data Factory
6 1 (1.92%) Azure Synapse Analytics
6 1 (1.92%) Heroku
6 1 (1.92%) Miro
6 1 (1.92%) Power Platform
6 1 (1.92%) SaaS
6 1 (1.92%) Slack
6 1 (1.92%) Trello
Communications & Networking
1 3 (5.77%) Internet
2 2 (3.85%) DLNA
2 2 (3.85%) TCP/IP
2 2 (3.85%) UPnP
2 2 (3.85%) Wi-Fi
3 1 (1.92%) HTTP
Database & Business Intelligence
1 5 (9.62%) Hadoop
2 4 (7.69%) Amazon DynamoDB
2 4 (7.69%) Apache Hive
2 4 (7.69%) Big Data
2 4 (7.69%) Data Lake
2 4 (7.69%) Spark SQL
3 3 (5.77%) Azure SQL Database
3 3 (5.77%) HBase
3 3 (5.77%) MongoDB
4 2 (3.85%) SQL Server
5 1 (1.92%) Data Mining
5 1 (1.92%) Power BI
5 1 (1.92%) SQL Server Integration Services
Development Applications
1 9 (17.31%) Selenium
2 8 (15.38%) Git (software)
3 6 (11.54%) Jenkins
4 5 (9.62%) GitLab
4 5 (9.62%) JIRA
4 5 (9.62%) Sonatype Nexus
5 4 (7.69%) Cucumber
6 3 (5.77%) Gradle
6 3 (5.77%) IBM UrbanCode
6 3 (5.77%) Maven
6 3 (5.77%) Mockito
6 3 (5.77%) SoapUI
6 3 (5.77%) WebDriver
7 2 (3.85%) Appium
7 2 (3.85%) GCC
7 2 (3.85%) GDB
7 2 (3.85%) GoogleTest
7 2 (3.85%) JUnit
8 1 (1.92%) PHPUnit
8 1 (1.92%) Robot Framework
General
1 12 (23.08%) Social Skills
2 10 (19.23%) Public Sector
3 6 (11.54%) Finance
4 3 (5.77%) Documentation Skills
5 2 (3.85%) Electronics
6 1 (1.92%) Automotive
6 1 (1.92%) Legal
6 1 (1.92%) Marketing
6 1 (1.92%) Retail Banking
Job Titles
1 38 (73.08%) Developer
2 9 (17.31%) JavaScript Developer
3 8 (15.38%) Java Developer
4 7 (13.46%) Senior Developer
5 6 (11.54%) Front End Developer (Client-Side Developer)
6 4 (7.69%) Apache Spark Developer
6 4 (7.69%) AWS Developer
6 4 (7.69%) Python Developer
6 4 (7.69%) React Developer
6 4 (7.69%) Scala Developer
6 4 (7.69%) Tester
7 3 (5.77%) Automation Tester
7 3 (5.77%) C# Developer
8 2 (3.85%) .NET Developer
8 2 (3.85%) C++ Developer
8 2 (3.85%) Hadoop Developer
8 2 (3.85%) Senior Front-End Developer
8 2 (3.85%) Software Engineer
8 2 (3.85%) Test Automation Engineer
8 2 (3.85%) Test Engineer
Libraries, Frameworks & Software Standards
1 15 (28.85%) Node.js
2 14 (26.92%) React
3 11 (21.15%) CSS
4 8 (15.38%) HTML
5 7 (13.46%) GraphQL
6 6 (11.54%) .NET
6 6 (11.54%) Redux
7 5 (9.62%) PySpark
8 3 (5.77%) AngularJS
8 3 (5.77%) Web Services
9 2 (3.85%) ActiveMQ
9 2 (3.85%) ASP.NET
9 2 (3.85%) ASP.NET MVC
9 2 (3.85%) Gherkin
9 2 (3.85%) JNI
9 2 (3.85%) Qt
9 2 (3.85%) REST
9 2 (3.85%) Ruby on Rails
9 2 (3.85%) Spring
9 2 (3.85%) STL
Miscellaneous
1 4 (7.69%) NHS
2 3 (5.77%) Linux Command Line
3 2 (3.85%) MPEG
3 2 (3.85%) Self-Motivation
4 1 (1.92%) Cloud Native
4 1 (1.92%) Data Structures
4 1 (1.92%) RIA
4 1 (1.92%) W3C
Operating Systems
1 8 (15.38%) Linux
2 4 (7.69%) Mac OS X
2 4 (7.69%) Unix
3 3 (5.77%) Android
4 2 (3.85%) Embedded Linux
5 1 (1.92%) Apple iOS
Processes & Methodologies
1 46 (88.46%) Agile Software Development
2 30 (57.69%) BDD
3 19 (36.54%) Test Automation
4 16 (30.77%) Continuous Integration
4 16 (30.77%) DevOps
5 14 (26.92%) Pair Programming
6 11 (21.15%) Microservices
6 11 (21.15%) Scrum
7 10 (19.23%) Unit Testing
8 9 (17.31%) Continuous Improvement
8 9 (17.31%) Mentoring
9 8 (15.38%) Kanban
9 8 (15.38%) Open Source
10 7 (13.46%) Coaching
11 6 (11.54%) Problem-Solving
11 6 (11.54%) Software Engineering
12 5 (9.62%) Continuous Deployment
12 5 (9.62%) High Availability
12 5 (9.62%) Release Management
12 5 (9.62%) Web Development
Programming Languages
1 20 (38.46%) JavaScript
2 15 (28.85%) Java
3 12 (23.08%) Python
4 10 (19.23%) SQL
5 6 (11.54%) Java 8
6 5 (9.62%) Scala
7 4 (7.69%) C#
7 4 (7.69%) C++
7 4 (7.69%) Ruby
7 4 (7.69%) Shell Script
8 3 (5.77%) Elm
8 3 (5.77%) Haskell
9 2 (3.85%) Bash Shell
9 2 (3.85%) C
10 1 (1.92%) Apple Swift
10 1 (1.92%) Groovy
10 1 (1.92%) Kotlin
10 1 (1.92%) PHP
10 1 (1.92%) PL/SQL
10 1 (1.92%) T-SQL
Qualifications
1 7 (13.46%) Degree
2 2 (3.85%) BPSS Clearance
2 2 (3.85%) SC Cleared
2 2 (3.85%) Security Cleared
3 1 (1.92%) ISTQB
3 1 (1.92%) Master's Degree
Quality Assurance & Compliance
1 4 (7.69%) Accessibility
1 4 (7.69%) QA
2 2 (3.85%) Disclosure Scotland
3 1 (1.92%) PMO
System Software
1 6 (11.54%) Docker
2 4 (7.69%) HDFS
Systems Management
1 4 (7.69%) Kubernetes
1 4 (7.69%) Terraform
2 3 (5.77%) Oozie
3 1 (1.92%) Ansible
3 1 (1.92%) Hadoop YARN
Vendors
1 3 (5.77%) Google
2 1 (1.92%) Cadence
2 1 (1.92%) Databricks
2 1 (1.92%) Microsoft
2 1 (1.92%) Spotify