Period
to 1 June 2020

The following table provides summary statistics for contract job vacancies advertised in England 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 1 June 2020 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)
UK > England
6 months to
1 Jun 2020
Same period 2019 Same period 2018
Rank 39 22 17
Rank change year-on-year -17 -5 +4
Contract jobs citing TDD 2,128 5,874 7,385
As % of all contract jobs advertised in England 5.18% 7.03% 7.94%
As % of the Processes & Methodologies category 6.04% 8.03% 9.11%
Number of daily rates quoted 1,660 4,572 5,848
Median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +6.38%
10th Percentile £400 £390 £363
90th Percentile £675 £650 £625
UK median daily rate £525 £515 £500
% change year-on-year +1.94% +3.00% +8.11%
Number of hourly rates quoted 31 17 31
Median hourly rate £55.00 £35.00 £45.00
Median hourly rate % change year-on-year +57.14% -22.22% +9.76%
10th Percentile £35.00 £35.00 £15.25
90th Percentile £65.54 £61.28 £70.75
UK median hourly rate £55.00 £35.00 £45.00
% change year-on-year +57.14% -22.22% +9.09%

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 England with a requirement for process or methodology skills.

All Process and Methodology Skills
England
Contract vacancies with a requirement for process or methodology skills 35,228 73,164 81,026
As % of all contract IT jobs advertised in England 85.78% 87.60% 87.10%
Number of daily rates quoted 22,558 48,641 53,784
Median daily rate £475 £475 £463
Median daily rate % change year-on-year - +2.70% +2.78%
10th Percentile £300 £306 £300
90th Percentile £675 £650 £638
UK median daily rate £475 £475 £450
% change year-on-year - +5.56% +2.86%
Number of hourly rates quoted 1,168 1,910 2,141
Median hourly rate £28.75 £25.00 £22.00
Median hourly rate % change year-on-year +15.00% +13.64% -12.00%
10th Percentile £12.75 £12.00 £11.18
90th Percentile £53.08 £52.50 £50.00
Median hourly rate £30.00 £24.75 £22.00
% change year-on-year +21.20% +12.51% -12.42%

TDD
Job Vacancy Trend in England

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

Job vacancy trend for TDD in England

TDD
Contractor Daily Rate Trend in England

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

Daily rate trend for TDD in England

TDD
Daily Rate Histogram in England

Daily rate distribution for jobs citing TDD in England over the 6 months to 1 June 2020.

Daily rate histogram for TDD in England

TDD
Contractor Hourly Rate Trend in England

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

Hourly rate trend for TDD in England

TDD
Hourly Rate Histogram in England

Hourly rate distribution of jobs citing TDD in England over the 6 months to 1 June 2020.

Hourly rate histogram for TDD in England

TDD
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the England region over the 6 months to 1 June 2020. 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
London -7 1,365 £550 +3.29% 253
North of England -24 219 £500 +8.99% 163
South West +9 162 £525 +9.95% 57
South East -45 157 £463 - 68
East of England -13 131 £498 +4.74% 27
Yorkshire -10 98 £500 - 47
Midlands -19 92 £450 -2.70% 43
North West -23 90 £500 +17.65% 93
West Midlands -12 64 £450 -1.64% 24
North East -17 32 £438 -2.78% 23
East Midlands -12 27 £358 -24.66% 19
TDD
UK

For the 6 months to 1 June 2020, 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 England region with a requirement for TDD.

1 1,555 (73.07%) Agile Software Development
2 932 (43.80%) Java
3 839 (39.43%) BDD
4 680 (31.95%) JavaScript
5 570 (26.79%) Microservices
6 536 (25.19%) AWS
7 529 (24.86%) Scrum
8 508 (23.87%) DevOps
9 501 (23.54%) Test Automation
10 459 (21.57%) Azure
11 443 (20.82%) Git (software)
12 426 (20.02%) C#
13 424 (19.92%) Continuous Integration
14 397 (18.66%) .NET
15 385 (18.09%) SQL
15 385 (18.09%) Pair Programming
16 373 (17.53%) AngularJS
17 367 (17.25%) Docker
18 365 (17.15%) Jenkins
19 357 (16.78%) HTML
20 354 (16.64%) Spring
21 351 (16.49%) React
22 347 (16.31%) Finance
23 317 (14.90%) CSS
24 308 (14.47%) Web Services
25 303 (14.24%) RESTful
26 302 (14.19%) Software Engineering
27 294 (13.82%) Python
28 292 (13.72%) Node.js
29 264 (12.41%) Java 8

TDD
Co-occurring IT Skills in England 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
1 120 (5.64%) Confluence
2 83 (3.90%) Elasticsearch
3 53 (2.49%) Apache Spark
4 49 (2.30%) Oracle SOA Suite
5 33 (1.55%) Mule
5 33 (1.55%) Red Hat Fuse
6 31 (1.46%) Oracle Service Bus
7 27 (1.27%) Apache
8 26 (1.22%) IIS
9 20 (0.94%) CMS
10 17 (0.80%) SharePoint
11 15 (0.70%) Cloud Foundry
12 13 (0.61%) Tomcat
13 12 (0.56%) JBoss
14 9 (0.42%) Oracle Coherence
15 7 (0.33%) Apache Solr
15 7 (0.33%) WordPress
16 6 (0.28%) WebLogic
17 5 (0.23%) Apache Airflow
17 5 (0.23%) WebSphere
Applications
1 14 (0.66%) Microsoft Excel
2 7 (0.33%) Microsoft Office
3 6 (0.28%) Zeplin
4 1 (0.047%) Adobe Illustrator
4 1 (0.047%) Chatbot
4 1 (0.047%) Microsoft Project
4 1 (0.047%) Photoshop
4 1 (0.047%) Sketch
Business Applications
1 13 (0.61%) SAP Oil and Gas
2 7 (0.33%) Payment Gateway
3 6 (0.28%) Dynamics CRM
3 6 (0.28%) Magento
3 6 (0.28%) SAP Hybris
4 3 (0.14%) Oracle BPM
5 2 (0.094%) Shopify
6 1 (0.047%) FINCAD Analytics
6 1 (0.047%) ION MarketView
6 1 (0.047%) Markit EDM
6 1 (0.047%) PolarLake
6 1 (0.047%) SAP S/4HANA
6 1 (0.047%) Sparx Enterprise Architect
Cloud Services
1 536 (25.19%) AWS
2 459 (21.57%) Azure
3 129 (6.06%) GitHub
4 115 (5.40%) Serverless
5 71 (3.34%) Amazon EC2
6 64 (3.01%) GCP
7 50 (2.35%) Amazon S3
8 49 (2.30%) AWS Lambda
9 31 (1.46%) PaaS
10 26 (1.22%) AWS CloudFormation
11 24 (1.13%) Amazon SQS
12 20 (0.94%) Amazon EMR
12 20 (0.94%) npm
12 20 (0.94%) SaaS
13 19 (0.89%) Power Platform
14 17 (0.80%) Amazon CloudWatch
14 17 (0.80%) OpenShift
15 15 (0.70%) Amazon Cognito
15 15 (0.70%) Azure Functions
16 11 (0.52%) Azure Active Directory
Communications & Networking
1 56 (2.63%) HTTP
2 16 (0.75%) DNS
2 16 (0.75%) TCP/IP
3 15 (0.70%) Internet
4 10 (0.47%) Skype
4 10 (0.47%) SSL
5 6 (0.28%) RTMP
6 5 (0.23%) DSL
6 5 (0.23%) FTP
7 3 (0.14%) DHCP
7 3 (0.14%) HTTPS
7 3 (0.14%) Radio Access Network
8 2 (0.094%) Firewall
8 2 (0.094%) Intrusion Detection
8 2 (0.094%) LTE
8 2 (0.094%) MQTT
8 2 (0.094%) Multicast
8 2 (0.094%) NFC
8 2 (0.094%) Software-Defined Networking
8 2 (0.094%) ZigBee
Database & Business Intelligence
1 193 (9.07%) SQL Server
2 156 (7.33%) MongoDB
3 125 (5.87%) NoSQL
4 111 (5.22%) PostgreSQL
5 106 (4.98%) MySQL
6 96 (4.51%) Relational Database
7 67 (3.15%) Big Data
8 40 (1.88%) Hadoop
9 38 (1.79%) Amazon RDS
10 35 (1.64%) Amazon DynamoDB
10 35 (1.64%) Redis
11 33 (1.55%) Azure SQL Database
12 28 (1.32%) Apache Cassandra
12 28 (1.32%) HBase
13 26 (1.22%) RDBMS
14 25 (1.17%) Cosmos DB
14 25 (1.17%) Data Warehouse
15 22 (1.03%) Data Lake
16 20 (0.94%) SQL Server Integration Services
17 19 (0.89%) Apache Hive
Development Applications
1 443 (20.82%) Git (software)
2 365 (17.15%) Jenkins
3 248 (11.65%) JIRA
4 182 (8.55%) Maven
5 143 (6.72%) Selenium
6 133 (6.25%) JUnit
7 128 (6.02%) Cucumber
8 110 (5.17%) Mockito
9 109 (5.12%) GitLab
10 84 (3.95%) TeamCity
11 71 (3.34%) Subversion
12 62 (2.91%) Visual Studio Team System
13 56 (2.63%) Gradle
14 54 (2.54%) SoapUI
15 51 (2.40%) Bitbucket
16 47 (2.21%) SpecFlow
16 47 (2.21%) Team Foundation Server
17 43 (2.02%) Jasmine
18 41 (1.93%) SonarQube
18 41 (1.93%) WebDriver
General
1 347 (16.31%) Finance
2 211 (9.92%) Banking
3 177 (8.32%) Public Sector
4 137 (6.44%) Front Office
5 73 (3.43%) Investment Banking
6 67 (3.15%) Marketing
6 67 (3.15%) Telecoms
7 53 (2.49%) Manufacturing
8 52 (2.44%) Electronics
9 34 (1.60%) Retail
10 24 (1.13%) Games
11 19 (0.89%) Automotive
12 14 (0.66%) Legal
13 13 (0.61%) Back Office
14 12 (0.56%) Financial Institution
15 9 (0.42%) Pharmaceutical
15 9 (0.42%) Publishing
15 9 (0.42%) Retail Banking
16 8 (0.38%) Advertising
17 6 (0.28%) Law
Job Titles
1 1,556 (73.12%) Developer
2 520 (24.44%) Java Developer
3 231 (10.86%) Senior Developer
4 213 (10.01%) .NET Developer
5 175 (8.22%) React Developer
6 174 (8.18%) C# Developer
7 132 (6.20%) Full Stack Developer
8 116 (5.45%) JavaScript Developer
9 103 (4.84%) Senior Java Developer
10 97 (4.56%) Front End Developer (Client-Side Developer)
11 89 (4.18%) AWS Developer
12 84 (3.95%) Python Developer
13 82 (3.85%) Angular Developer
14 72 (3.38%) C# .NET Developer
15 68 (3.20%) Azure Developer
15 68 (3.20%) Software Engineer
16 59 (2.77%) Agile Developer
17 57 (2.68%) Tester
18 56 (2.63%) Architect
18 56 (2.63%) Lead Developer
Libraries, Frameworks & Software Standards
1 397 (18.66%) .NET
2 373 (17.53%) AngularJS
3 357 (16.78%) HTML
4 354 (16.64%) Spring
5 351 (16.49%) React
6 317 (14.90%) CSS
7 308 (14.47%) Web Services
8 303 (14.24%) RESTful
9 292 (13.72%) Node.js
10 229 (10.76%) REST
11 204 (9.59%) Spring Boot
12 163 (7.66%) SOAP
13 143 (6.72%) HTML5
14 135 (6.34%) ASP.NET
14 135 (6.34%) Kafka
15 126 (5.92%) Redux
16 118 (5.55%) JSON
17 113 (5.31%) .NET Core
18 105 (4.93%) .NET Framework
19 103 (4.84%) ASP.NET Web API
Miscellaneous
1 190 (8.93%) Greenfield Project
2 121 (5.69%) User Experience
3 81 (3.81%) Analytical Skills
4 75 (3.52%) Fixed Income
5 67 (3.15%) Enterprise Software
6 62 (2.91%) Foreign Exchange (FX)
7 55 (2.58%) Mobile App
8 47 (2.21%) Data Structures
9 42 (1.97%) Derivative
10 32 (1.50%) Algorithms
11 24 (1.13%) Equities
11 24 (1.13%) Public Cloud
12 21 (0.99%) Cloud Native
12 21 (0.99%) Management Information System
13 16 (0.75%) Virtual Team
14 15 (0.70%) Credit Risk
15 14 (0.66%) Self-Motivation
16 13 (0.61%) Linux Command Line
17 12 (0.56%) Data Centre
18 11 (0.52%) BYOD
Operating Systems
1 200 (9.40%) Linux
2 143 (6.72%) Unix
3 81 (3.81%) Android
4 80 (3.76%) Mac OS X
5 68 (3.20%) Apple iOS
6 47 (2.21%) Windows
7 17 (0.80%) Windows Server
8 9 (0.42%) Red Hat Enterprise Linux
9 7 (0.33%) Mac OS
10 6 (0.28%) Solaris
11 3 (0.14%) CentOS
11 3 (0.14%) tvOS
12 2 (0.094%) Ubuntu
13 1 (0.047%) CoreOS
13 1 (0.047%) Debian
13 1 (0.047%) HPUX
13 1 (0.047%) zOS
Processes & Methodologies
1 1,555 (73.07%) Agile Software Development
2 839 (39.43%) BDD
3 570 (26.79%) Microservices
4 529 (24.86%) Scrum
5 508 (23.87%) DevOps
6 501 (23.54%) Test Automation
7 424 (19.92%) Continuous Integration
8 385 (18.09%) Pair Programming
9 302 (14.19%) Software Engineering
10 237 (11.14%) Kanban
11 180 (8.46%) MVC
12 177 (8.32%) OO
13 159 (7.47%) Continuous Improvement
14 154 (7.24%) Front End Development
15 149 (7.00%) User Stories
16 148 (6.95%) Unit Testing
16 148 (6.95%) Web Development
17 147 (6.91%) Continuous Delivery
18 146 (6.86%) Problem-Solving
19 144 (6.77%) Continuous Deployment
Programming Languages
1 932 (43.80%) Java
2 680 (31.95%) JavaScript
3 426 (20.02%) C#
4 385 (18.09%) SQL
5 294 (13.82%) Python
6 264 (12.41%) Java 8
7 155 (7.28%) TypeScript
8 108 (5.08%) Scala
9 104 (4.89%) Ruby
10 67 (3.15%) ES6
11 66 (3.10%) Kotlin
12 59 (2.77%) PHP
13 54 (2.54%) C++
14 46 (2.16%) PowerShell
15 43 (2.02%) Go
16 40 (1.88%) T-SQL
17 39 (1.83%) Apple Swift
17 39 (1.83%) C
18 30 (1.41%) Groovy
18 30 (1.41%) XPath
Qualifications
1 240 (11.28%) Security Cleared
2 163 (7.66%) SC Cleared
3 102 (4.79%) Degree
4 44 (2.07%) Computer Science Degree
5 33 (1.55%) DV Cleared
6 31 (1.46%) BPSS Clearance
7 27 (1.27%) ISTQB
8 14 (0.66%) ISEB
9 11 (0.52%) BC Cleared
9 11 (0.52%) DBS Check
10 9 (0.42%) ISTQB Foundation Certification
11 7 (0.33%) AWS Certification
11 7 (0.33%) Microsoft Certification
12 4 (0.19%) ISTQB Advanced Certification
12 4 (0.19%) Master's Degree
12 4 (0.19%) MCSE
13 3 (0.14%) OCP
13 3 (0.14%) Oracle Certification
13 3 (0.14%) PMI Certification
14 2 (0.094%) PMP
Quality Assurance & Compliance
1 128 (6.02%) QA
2 17 (0.80%) WCAG
3 11 (0.52%) Data Quality
3 11 (0.52%) GDPR
4 9 (0.42%) PMO
5 5 (0.23%) MiFID
6 2 (0.094%) EMIR
7 1 (0.047%) Disclosure Scotland
7 1 (0.047%) IFRS
System Software
1 367 (17.25%) Docker
2 22 (1.03%) HDFS
3 19 (0.89%) Active Directory
4 14 (0.66%) Postfix
5 8 (0.38%) VMware Infrastructure
5 8 (0.38%) vSphere
6 5 (0.23%) NDS
6 5 (0.23%) NetIQ eDirectory
7 3 (0.14%) Virtual Machines
8 2 (0.094%) BusyBox
8 2 (0.094%) Veritas Cluster Server
9 1 (0.047%) Apache Flume
9 1 (0.047%) Apache ZooKeeper
9 1 (0.047%) VMware ESXi
Systems Management
1 257 (12.08%) Kubernetes
2 109 (5.12%) Terraform
3 66 (3.10%) Ansible
4 37 (1.74%) Opscode Chef
5 29 (1.36%) Puppet
6 18 (0.85%) Hadoop YARN
7 8 (0.38%) NetIQ Identity Manager
8 7 (0.33%) Docker Swarm
8 7 (0.33%) Grafana
8 7 (0.33%) Kibana
9 6 (0.28%) MIIS
9 6 (0.28%) Single Sign-On
10 5 (0.23%) Tivoli
11 4 (0.19%) Prometheus
12 3 (0.14%) HP ALM
12 3 (0.14%) Nagios
12 3 (0.14%) Rundeck
13 2 (0.094%) Istio
13 2 (0.094%) Nessus
13 2 (0.094%) TeamSite
Vendors
1 164 (7.71%) Oracle
2 142 (6.67%) Microsoft
3 82 (3.85%) SAP
4 61 (2.87%) Google
5 49 (2.30%) Atlassian
6 35 (1.64%) WSO2
7 33 (1.55%) Talend
8 31 (1.46%) hybris
9 23 (1.08%) DevExpress
10 19 (0.89%) Adobe
11 16 (0.75%) IBM
11 16 (0.75%) RedGate
12 14 (0.66%) Databricks
13 13 (0.61%) Tableau
14 12 (0.56%) Xamarin
15 11 (0.52%) Apple
15 11 (0.52%) CA Agile Central
15 11 (0.52%) Hortonworks
16 10 (0.47%) Salesforce.com
17 9 (0.42%) VMware