Period
to 21 January 2018

The following table provides summary statistics for contract job vacancies 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 21 January 2018 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
6 months to
21 Jan 2018
Same period 2017 Same period 2016
Rank 15 23 29
Rank change year-on-year +8 +6 +5
Contract jobs citing TDD 7,679 6,368 6,110
As % of all contract IT jobs advertised in the UK 7.78% 6.63% 5.66%
As % of the Processes & Methodologies category 9.20% 7.91% 6.86%
Number of daily rates quoted 6,104 4,980 4,760
UK median daily rate £488 £458 £450
Median daily rate % change year-on-year +6.56% +1.67% +5.88%
10th Percentile £350 £325 £313
90th Percentile £625 £600 £600
UK excluding London median daily rate £425 £425 £390
% change year-on-year - +8.97% +4.00%
Number of hourly rates quoted 48 21 28
UK median hourly rate £45.00 £42.50 £39.00
Median hourly rate % change year-on-year +5.88% +8.97% +4.00%
10th Percentile £35.65 £36.00 £34.15
90th Percentile £63.75 £57.50 £52.50
UK excluding London median hourly rate £45.00 £40.00 £37.50
% change year-on-year +12.50% +6.67% +8.70%

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 with a requirement for process or methodology skills.

All Process and Methodology Skills
UK
Contract vacancies with a requirement for process or methodology skills 83,462 80,467 89,057
As % of all contract IT jobs advertised in the UK 84.53% 83.78% 82.48%
Number of daily rates quoted 55,891 53,304 57,800
UK median daily rate £450 £425 £425
Median daily rate % change year-on-year +5.88% - +6.25%
10th Percentile £285 £263 £263
90th Percentile £638 £613 £600
UK excluding London median daily rate £410 £400 £390
% change year-on-year +2.50% +2.56% +4.00%
Number of hourly rates quoted 1,947 2,244 2,718
UK median hourly rate £23.50 £24.50 £23.75
Median hourly rate % change year-on-year -4.08% +3.16% +18.75%
10th Percentile £11.31 £11.25 £11.25
90th Percentile £50.00 £48.75 £50.00
UK excluding London median hourly rate £24.02 £24.50 £25.00
% change year-on-year -1.96% -2.00% +25.00%

TDD
Job Vacancy Trend

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

Job vacancy trend for TDD in the UK

TDD
Contractor Daily Rate Trend

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

Contractor daily rate trend for TDD in the UK

TDD
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing TDD over the 6 months to 21 January 2018.

Contractor daily rate histogram for TDD in the UK

TDD
Contractor Hourly Rate Trend

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

Contractor hourly rate trend for TDD in the UK

TDD
Contractor Hourly Rate Histogram

The hourly rate distribution of IT jobs citing TDD over the 6 months to 21 January 2018.

Contractor hourly rate histogram for TDD in the UK

TDD
Top 16 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the UK over the 6 months to 21 January 2018. 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
England +10 7,306 £500 +8.11% 2,404
London +5 4,570 £513 +5.13% 1,217
UK excluding London -1 3,059 £425 - 1,290
South East +10 952 £413 -2.94% 371
North of England +1 735 £400 -5.88% 359
East of England +2 457 £475 - 184
Midlands +22 408 £400 - 141
North West -2 354 £400 -5.88% 195
Yorkshire 0 325 £425 - 141
West Midlands +27 257 £400 - 66
Scotland -1 221 £400 - 60
South West +4 199 £416 +11.00% 130
East Midlands +16 148 £391 +4.97% 75
North East -13 68 £425 -5.56% 23
Northern Ireland 0 67 £430 +11.69% 9
Wales -33 49 £448 -5.79% 36

For the 6 months to 21 January 2018, 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 with a requirement for TDD.

1 5,843 (76.09%) Agile Software Development
2 3,395 (44.21%) Java
3 3,238 (42.17%) BDD
4 2,805 (36.53%) JavaScript
5 2,282 (29.72%) Scrum
6 2,173 (28.30%) Continuous Integration
7 1,890 (24.61%) HTML
8 1,824 (23.75%) Git (software)
9 1,811 (23.58%) C#
10 1,764 (22.97%) CSS
11 1,697 (22.10%) .NET
12 1,636 (21.30%) Test Automation
13 1,528 (19.90%) AngularJS
14 1,438 (18.73%) MVC
15 1,406 (18.31%) Microservices
16 1,391 (18.11%) Web Services
17 1,387 (18.06%) Spring
18 1,380 (17.97%) Finance
19 1,312 (17.09%) Jenkins
20 1,296 (16.88%) REST
21 1,294 (16.85%) Amazon AWS
22 1,269 (16.53%) SQL
23 1,228 (15.99%) RESTful
24 1,202 (15.65%) Node.js
25 1,102 (14.35%) Kanban
26 1,095 (14.26%) React
27 1,056 (13.75%) DevOps
28 1,032 (13.44%) HTML5
29 973 (12.67%) SQL Server
30 956 (12.45%) OO

TDD
Co-occurring IT Skills 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
1 416 (5.42%) Confluence
2 290 (3.78%) Elasticsearch
3 274 (3.57%) Tomcat
4 254 (3.31%) Apache Spark
5 212 (2.76%) Apache
6 200 (2.60%) WebSphere
7 186 (2.42%) JBoss
8 184 (2.40%) CMS
9 174 (2.27%) WebLogic
10 145 (1.89%) Oracle SOA Suite
11 109 (1.42%) Mule
12 105 (1.37%) OpenStack
13 90 (1.17%) Cloud Foundry
14 87 (1.13%) Apache Solr
15 66 (0.86%) Jetty
16 64 (0.83%) Sitecore CMS
17 62 (0.81%) Oracle Service Bus
18 61 (0.79%) IIS
19 56 (0.73%) EPiServer
20 53 (0.69%) Adobe Experience Manager
Applications
1 25 (0.33%) Microsoft Excel
2 17 (0.22%) MS Visio
3 16 (0.21%) Microsoft Office
4 12 (0.16%) Photoshop
5 5 (0.065%) Microsoft Project
6 3 (0.039%) Adobe Illustrator
6 3 (0.039%) Microsoft PowerPoint
7 2 (0.026%) Fireworks
7 2 (0.026%) GIMP
7 2 (0.026%) InVision
8 1 (0.013%) Adobe After Effects
8 1 (0.013%) Adobe Creative Suite
8 1 (0.013%) Chatbot
8 1 (0.013%) InfoPath
Business Applications
1 28 (0.36%) Dynamics CRM
2 26 (0.34%) Payment Gateway
3 22 (0.29%) Magento
4 14 (0.18%) ION MarketView
5 10 (0.13%) Bloomberg TOMS
6 9 (0.12%) SAP Hybris
7 5 (0.065%) Oracle Retail
7 5 (0.065%) RMDS
8 4 (0.052%) Oracle BPM
8 4 (0.052%) SunGard GMI
9 3 (0.039%) Dynamics AX
9 3 (0.039%) Endur
9 3 (0.039%) MetaTrader
9 3 (0.039%) Oracle Financials
9 3 (0.039%) PeopleSoft Financials
9 3 (0.039%) Summit
10 2 (0.026%) Oracle Cash Management
11 1 (0.013%) Exstream
11 1 (0.013%) Oracle SCM
11 1 (0.013%) Salesforce.com CRM
Cloud Services
1 1,294 (16.85%) Amazon AWS
2 792 (10.31%) Microsoft Azure
3 319 (4.15%) GitHub
4 180 (2.34%) npm
5 151 (1.97%) Serverless
6 144 (1.88%) Amazon EC2
7 126 (1.64%) PaaS
8 97 (1.26%) Amazon S3
9 95 (1.24%) Google Cloud Platform
10 77 (1.00%) AWS Lambda
11 69 (0.90%) Slack
12 52 (0.68%) Amazon SQS
13 50 (0.65%) Cloud Computing
13 50 (0.65%) OpenShift
14 48 (0.63%) IaaS
15 45 (0.59%) AWS CloudFormation
16 39 (0.51%) SaaS
17 31 (0.40%) Google Analytics
18 29 (0.38%) Heroku
19 23 (0.30%) Yarn
Communications & Networking
1 236 (3.07%) HTTP
2 97 (1.26%) Internet
3 89 (1.16%) TCP/IP
4 65 (0.85%) SSL
5 52 (0.68%) SMS
6 43 (0.56%) Kerberos
7 31 (0.40%) AMQP
8 30 (0.39%) Bluetooth
9 25 (0.33%) DNS
10 17 (0.22%) Firewall
11 16 (0.21%) FIX Connectivity
11 16 (0.21%) FTP
12 13 (0.17%) SAN
13 9 (0.12%) SSH
13 9 (0.12%) Wireless
14 7 (0.091%) 3GPP
14 7 (0.091%) Intranet
14 7 (0.091%) LTE
15 6 (0.078%) DHCP
16 5 (0.065%) Wi-Fi
Database & Business Intelligence
1 973 (12.67%) SQL Server
2 941 (12.25%) NoSQL
3 648 (8.44%) MongoDB
4 574 (7.47%) MySQL
5 523 (6.81%) PostgreSQL
6 465 (6.06%) Relational Database
7 417 (5.43%) Hadoop
8 389 (5.07%) Big Data
9 227 (2.96%) Apache Cassandra
10 199 (2.59%) RDBMS
11 173 (2.25%) HBase
12 128 (1.67%) Redis
13 110 (1.43%) SQL Server 2012
14 88 (1.15%) Apache Hive
15 80 (1.04%) SQL Server 2014
16 71 (0.92%) Amazon DynamoDB
17 66 (0.86%) Oracle Database
18 65 (0.85%) SQL Server 2016
19 64 (0.83%) DB2
20 62 (0.81%) SQL Server Integration Services
Development Applications
1 1,824 (23.75%) Git (software)
2 1,312 (17.09%) Jenkins
3 770 (10.03%) JIRA
4 698 (9.09%) Cucumber
5 678 (8.83%) Maven
6 606 (7.89%) Selenium
7 536 (6.98%) JUnit
8 319 (4.15%) TeamCity
9 314 (4.09%) Gradle
10 312 (4.06%) Mockito
11 307 (4.00%) Jasmine
12 291 (3.79%) Subversion
13 264 (3.44%) webpack
14 259 (3.37%) NUnit
15 248 (3.23%) gulp
16 214 (2.79%) Grunt
17 201 (2.62%) Team Foundation Server
18 198 (2.58%) Mocha
19 194 (2.53%) Visual Studio
20 186 (2.42%) WebDriver
General
1 1,380 (17.97%) Finance
2 743 (9.68%) Banking
3 293 (3.82%) Retail
4 243 (3.16%) Marketing
5 219 (2.85%) Telecoms
6 194 (2.53%) Investment Banking
7 171 (2.23%) Front Office
8 159 (2.07%) Manufacturing
9 145 (1.89%) Games
10 136 (1.77%) Electronics
11 125 (1.63%) Publishing
12 80 (1.04%) Retail Banking
13 63 (0.82%) Law
14 61 (0.79%) Financial Institution
15 60 (0.78%) Advertising
16 51 (0.66%) Back Office
17 48 (0.63%) Legal
18 45 (0.59%) Automotive
19 11 (0.14%) Pharmaceutical
20 10 (0.13%) Corporate Banking
Job Titles
1 5,865 (76.38%) Developer
2 1,940 (25.26%) Java Developer
3 1,089 (14.18%) Senior Developer
4 962 (12.53%) .NET Developer
5 765 (9.96%) C# Developer
6 612 (7.97%) JavaScript Developer
7 512 (6.67%) Full Stack Developer
8 482 (6.28%) Agile Developer
9 452 (5.89%) React Developer
10 403 (5.25%) C# .NET Developer
11 398 (5.18%) Senior Java Developer
12 392 (5.10%) Front End Developer (Client-Side Developer)
13 264 (3.44%) Node.js Developer
14 249 (3.24%) Scala Developer
15 245 (3.19%) Angular Developer
16 236 (3.07%) Architect
16 236 (3.07%) Software Engineer
17 223 (2.90%) Lead Developer
18 211 (2.75%) Agile Java Developer
19 201 (2.62%) Software Developer
Libraries, Frameworks & Software Standards
1 1,890 (24.61%) HTML
2 1,764 (22.97%) CSS
3 1,697 (22.10%) .NET
4 1,528 (19.90%) AngularJS
5 1,391 (18.11%) Web Services
6 1,387 (18.06%) Spring
7 1,296 (16.88%) REST
8 1,228 (15.99%) RESTful
9 1,202 (15.65%) Node.js
10 1,095 (14.26%) React
11 1,032 (13.44%) HTML5
12 743 (9.68%) ASP.NET
13 692 (9.01%) ASP.NET Web API
14 668 (8.70%) JSON
15 644 (8.39%) CSS3
16 625 (8.14%) Hibernate
17 621 (8.09%) XML
18 566 (7.37%) SOAP
19 542 (7.06%) Spring Boot
20 499 (6.50%) jQuery
Miscellaneous
1 626 (8.15%) Greenfield Project
2 418 (5.44%) User Experience
3 309 (4.02%) Mobile App
4 245 (3.19%) Computer Science
5 207 (2.70%) Enterprise Software
6 186 (2.42%) Analytical Skills
7 182 (2.37%) Fintech
8 169 (2.20%) Algorithms
9 135 (1.76%) Data Structures
10 134 (1.75%) Virtual Team
11 117 (1.52%) Derivative
12 96 (1.25%) Foreign Exchange (FX)
13 90 (1.17%) Digital Media
14 83 (1.08%) N-Tier
15 68 (0.89%) iPad
16 67 (0.87%) Linux Command Line
17 61 (0.79%) Public Cloud
18 55 (0.72%) Video on Demand
19 51 (0.66%) Equities
20 48 (0.63%) Fixed Income
Operating Systems
1 787 (10.25%) Linux
2 353 (4.60%) Unix
3 285 (3.71%) Android
4 282 (3.67%) Apple iOS
5 253 (3.29%) Windows
6 126 (1.64%) Red Hat Enterprise Linux
7 74 (0.96%) Mac OS X
8 38 (0.49%) Windows Server
9 21 (0.27%) Solaris
10 19 (0.25%) Windows Server 2008
11 16 (0.21%) Ubuntu
11 16 (0.21%) Windows Server 2012
12 15 (0.20%) CentOS
13 12 (0.16%) HPUX
14 10 (0.13%) CoreOS
14 10 (0.13%) Mac OS
15 9 (0.12%) Oracle Linux
16 7 (0.091%) Nucleus RTOS
16 7 (0.091%) VMS
17 4 (0.052%) Embedded Linux
Processes & Methodologies
1 5,843 (76.09%) Agile Software Development
2 3,238 (42.17%) BDD
3 2,282 (29.72%) Scrum
4 2,173 (28.30%) Continuous Integration
5 1,636 (21.30%) Test Automation
6 1,438 (18.73%) MVC
7 1,406 (18.31%) Microservices
8 1,102 (14.35%) Kanban
9 1,056 (13.75%) DevOps
10 956 (12.45%) OO
11 948 (12.35%) Pair Programming
12 902 (11.75%) Software Engineering
13 803 (10.46%) Unit Testing
14 709 (9.23%) E-Commerce
15 658 (8.57%) Continuous Delivery
16 639 (8.32%) Open Source
17 597 (7.77%) Front End Development
18 576 (7.50%) SOA
19 492 (6.41%) SOLID
20 475 (6.19%) Web Development
Programming Languages
1 3,395 (44.21%) Java
2 2,805 (36.53%) JavaScript
3 1,811 (23.58%) C#
4 1,269 (16.53%) SQL
5 781 (10.17%) Python
6 619 (8.06%) Scala
7 566 (7.37%) Ruby
8 390 (5.08%) ES6
9 224 (2.92%) TypeScript
10 214 (2.79%) C++
10 214 (2.79%) Groovy
11 190 (2.47%) PHP
12 183 (2.38%) Apple Swift
13 166 (2.16%) T-SQL
14 152 (1.98%) Go
15 133 (1.73%) Objective-C
16 122 (1.59%) Shell Script
17 107 (1.39%) C
18 88 (1.15%) Bash Shell
19 87 (1.13%) XPath
Qualifications
1 386 (5.03%) Degree
2 297 (3.87%) Security Cleared
3 193 (2.51%) SC Cleared
4 130 (1.69%) Computer Science Degree
5 39 (0.51%) ISEB
5 39 (0.51%) Master's Degree
6 34 (0.44%) ISTQB
7 30 (0.39%) BPSS Clearance
8 27 (0.35%) PhD
9 21 (0.27%) PMI Certification
10 16 (0.21%) Microsoft Certification
10 16 (0.21%) PMP
11 12 (0.16%) CTC Cleared
12 11 (0.14%) DV Cleared
13 10 (0.13%) ISTQB Foundation Certification
14 8 (0.10%) MCSD
15 7 (0.091%) DBS Check
16 5 (0.065%) BC Cleared
16 5 (0.065%) MCPD
16 5 (0.065%) PRINCE2 Practitioner
Quality Assurance & Compliance
1 510 (6.64%) QA
2 43 (0.56%) MiFID
3 28 (0.36%) WCAG
4 25 (0.33%) GCP
5 24 (0.31%) Disclosure Scotland
6 20 (0.26%) PCI DSS
7 17 (0.22%) Data Quality
8 16 (0.21%) GDPR
8 16 (0.21%) ISO/IEC 27001
9 13 (0.17%) HL7
10 12 (0.16%) ISO 9001
11 9 (0.12%) WAI
12 6 (0.078%) PSD2
13 5 (0.065%) PMO
14 4 (0.052%) EMIR
14 4 (0.052%) SLA
15 3 (0.039%) IEC 62304
16 2 (0.026%) Cyber Essentials
16 2 (0.026%) Dodd-Frank
16 2 (0.026%) ISO 14001
System Software
1 892 (11.62%) Docker
2 108 (1.41%) HDFS
3 69 (0.90%) Apache ZooKeeper
4 49 (0.64%) Active Directory
5 44 (0.57%) VMware Infrastructure
6 40 (0.52%) vSphere
7 18 (0.23%) Virtual Machines
8 7 (0.091%) Apache Flume
8 7 (0.091%) NFS
9 4 (0.052%) LXC
9 4 (0.052%) OpenDJ
9 4 (0.052%) vCloud
10 3 (0.039%) Firmware
10 3 (0.039%) Virtual Servers
11 2 (0.026%) GeoWebCache
11 2 (0.026%) OpenIDM
11 2 (0.026%) Varnish
12 1 (0.013%) VirtualBox
Systems Management
1 427 (5.56%) Ansible
2 347 (4.52%) Puppet
3 301 (3.92%) Opscode Chef
4 234 (3.05%) Kubernetes
5 128 (1.67%) Terraform
6 74 (0.96%) Kibana
7 67 (0.87%) Grafana
8 54 (0.70%) logstash
8 54 (0.70%) Mesos
9 51 (0.66%) Hadoop YARN
10 42 (0.55%) Cobbler
11 33 (0.43%) Business Desktop Deployment
12 17 (0.22%) ITRS Geneos
13 15 (0.20%) ZABBIX
14 14 (0.18%) Packer
15 11 (0.14%) Docker Swarm
15 11 (0.14%) HP Quality Center
16 10 (0.13%) Nagios
16 10 (0.13%) Prometheus
16 10 (0.13%) Rancher
Vendors
1 691 (9.00%) Oracle
2 391 (5.09%) Microsoft
3 162 (2.11%) Google
4 139 (1.81%) SAP
5 111 (1.45%) Splunk
6 96 (1.25%) Sitecore
7 86 (1.12%) WSO2
8 83 (1.08%) Red Hat
9 78 (1.02%) IBM
10 75 (0.98%) AppDynamics
11 68 (0.89%) Apple
11 68 (0.89%) VMware
12 64 (0.83%) Adobe
13 61 (0.79%) Atlassian
14 57 (0.74%) Salesforce.com
15 53 (0.69%) Xamarin
16 42 (0.55%) HP
16 42 (0.55%) Perforce
17 40 (0.52%) Cloudera
18 38 (0.49%) Apigee