Period
to 22 April 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 22 April 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
22 Apr 2018
Same period 2017 Same period 2016
Rank 16 27 29
Rank change year-on-year +11 +2 +9
Contract jobs citing TDD 7,989 6,069 6,235
As % of all contract IT jobs advertised in the UK 7.90% 6.60% 5.84%
As % of the Processes & Methodologies category 9.22% 7.82% 6.98%
Number of daily rates quoted 6,281 4,734 4,952
UK median daily rate £500 £455 £450
Median daily rate % change year-on-year +9.78% +1.11% +5.88%
10th Percentile £350 £320 £313
90th Percentile £623 £613 £613
UK excluding London median daily rate £425 £413 £400
% change year-on-year +3.03% +3.13% +6.67%
Number of hourly rates quoted 30 20 28
UK median hourly rate £45.00 £39.01 £43.25
Median hourly rate % change year-on-year +15.36% -9.80% +13.07%
10th Percentile £8.00 £35.00 £37.00
90th Percentile £71.18 £51.33 £68.83
UK excluding London median hourly rate £45.00 £37.00 £42.29
% change year-on-year +21.62% -12.51% +15.07%

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 86,614 77,646 89,328
As % of all contract IT jobs advertised in the UK 85.63% 84.39% 83.73%
Number of daily rates quoted 57,208 51,083 58,365
UK median daily rate £450 £438 £425
Median daily rate % change year-on-year +2.86% +2.94% +6.25%
10th Percentile £298 £270 £263
90th Percentile £638 £620 £606
UK excluding London median daily rate £420 £400 £393
% change year-on-year +5.00% +1.91% +4.67%
Number of hourly rates quoted 2,226 2,117 2,447
UK median hourly rate £22.50 £25.00 £25.00
Median hourly rate % change year-on-year -10.00% - +19.22%
10th Percentile £11.22 £11.35 £11.50
90th Percentile £50.25 £51.25 £50.00
UK excluding London median hourly rate £21.24 £25.00 £25.50
% change year-on-year -15.04% -1.96% +15.91%

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 22 April 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 22 April 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 22 April 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 +9 7,576 £500 +8.11% 2,079
London +2 4,635 £525 +7.14% 1,002
UK excluding London +1 3,278 £425 +3.03% 1,169
South East +4 954 £450 +9.09% 302
North of England +3 923 £400 -2.44% 335
Midlands +9 476 £425 +13.33% 156
Yorkshire +6 454 £425 +2.41% 133
North West +7 399 £400 -3.03% 182
East of England -1 388 £513 +13.89% 143
West Midlands +17 295 £425 +13.33% 71
Scotland +5 224 £415 +1.22% 63
South West +13 203 £400 +6.67% 139
East Midlands +11 179 £400 +6.67% 85
Wales -4 79 £415 -12.63% 21
North East -11 77 £425 +21.43% 20
Northern Ireland +13 50 £455 +13.75% 10

For the 6 months to 22 April 2018, 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 with a requirement for TDD.

1 6,111 (76.49%) Agile Software Development
2 3,378 (42.28%) Java
3 3,377 (42.27%) BDD
4 2,963 (37.09%) JavaScript
5 2,345 (29.35%) Scrum
6 2,159 (27.02%) Continuous Integration
7 1,972 (24.68%) Git (software)
8 1,902 (23.81%) C#
9 1,897 (23.75%) HTML
10 1,833 (22.94%) Test Automation
11 1,764 (22.08%) .NET
11 1,764 (22.08%) CSS
12 1,580 (19.78%) Microservices
13 1,505 (18.84%) AngularJS
14 1,473 (18.44%) Amazon AWS
15 1,465 (18.34%) Spring
15 1,465 (18.34%) Jenkins
16 1,388 (17.37%) MVC
17 1,372 (17.17%) RESTful
18 1,363 (17.06%) REST
19 1,351 (16.91%) Web Services
19 1,351 (16.91%) SQL
20 1,325 (16.59%) Finance
21 1,275 (15.96%) React
22 1,257 (15.73%) DevOps
23 1,234 (15.45%) Node.js
24 1,138 (14.24%) Kanban
25 1,055 (13.21%) Java 8
26 1,029 (12.88%) OO
27 1,020 (12.77%) SQL Server

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
1 417 (5.22%) Confluence
2 318 (3.98%) Elasticsearch
3 278 (3.48%) Apache
4 266 (3.33%) Tomcat
5 217 (2.72%) Apache Spark
6 202 (2.53%) WebSphere
7 170 (2.13%) JBoss
8 157 (1.97%) WebLogic
9 155 (1.94%) CMS
10 117 (1.46%) Oracle SOA Suite
11 110 (1.38%) OpenStack
12 107 (1.34%) Cloud Foundry
13 94 (1.18%) Mule
14 84 (1.05%) NServiceBus
15 60 (0.75%) Oracle Service Bus
16 58 (0.73%) IIS
17 57 (0.71%) Jetty
18 54 (0.68%) Adobe Experience Manager
19 47 (0.59%) Sitecore CMS
20 41 (0.51%) MQSeries
Applications
1 34 (0.43%) Microsoft Excel
2 23 (0.29%) Photoshop
3 18 (0.23%) MS Visio
4 16 (0.20%) Microsoft Office
5 11 (0.14%) GIMP
6 7 (0.088%) Adobe Illustrator
7 4 (0.050%) Microsoft Project
8 3 (0.038%) Chatbot
8 3 (0.038%) Microsoft PowerPoint
9 1 (0.013%) Adobe Creative Suite
9 1 (0.013%) InfoPath
9 1 (0.013%) InVision
Business Applications
1 30 (0.38%) Dynamics CRM
2 23 (0.29%) Magento
3 22 (0.28%) Payment Gateway
4 13 (0.16%) Eagle PACE
4 13 (0.16%) Front Arena
4 13 (0.16%) thinkFolio
5 8 (0.10%) Markit EDM
6 5 (0.063%) Bloomberg AIM
6 5 (0.063%) Summit
7 3 (0.038%) SAP Hybris
8 2 (0.025%) Oracle Cash Management
8 2 (0.025%) Oracle General Ledger
8 2 (0.025%) Salesforce.com CRM
9 1 (0.013%) Endur
9 1 (0.013%) FastStats
9 1 (0.013%) Oracle EBS
9 1 (0.013%) Oracle SCM
9 1 (0.013%) SAP FI
9 1 (0.013%) SunGard GMI
9 1 (0.013%) Unica
Cloud Services
1 1,473 (18.44%) Amazon AWS
2 977 (12.23%) Microsoft Azure
3 325 (4.07%) GitHub
4 222 (2.78%) Serverless
5 177 (2.22%) npm
6 163 (2.04%) Amazon EC2
7 118 (1.48%) Google Cloud Platform
8 107 (1.34%) PaaS
9 102 (1.28%) Cloud Computing
10 101 (1.26%) Amazon S3
11 87 (1.09%) AWS Lambda
12 77 (0.96%) Slack
13 67 (0.84%) OpenShift
14 57 (0.71%) SaaS
15 54 (0.68%) Amazon SQS
16 52 (0.65%) Heroku
17 51 (0.64%) IaaS
18 47 (0.59%) AWS CloudFormation
19 37 (0.46%) Google Analytics
20 31 (0.39%) Yarn
Communications & Networking
1 312 (3.91%) HTTP
2 120 (1.50%) TCP/IP
3 87 (1.09%) Internet
4 71 (0.89%) SSL
5 58 (0.73%) DNS
6 48 (0.60%) SMS
7 41 (0.51%) FTP
8 19 (0.24%) Firewall
9 17 (0.21%) DHCP
10 14 (0.18%) SAN
11 13 (0.16%) AMQP
11 13 (0.16%) Bluetooth
12 11 (0.14%) DMARC
12 11 (0.14%) Wi-Fi
13 10 (0.13%) SSH
14 9 (0.11%) FIX Connectivity
14 9 (0.11%) Network Security
15 8 (0.10%) DKIM
16 6 (0.075%) IPsec
16 6 (0.075%) Kerberos
Database & Business Intelligence
1 1,020 (12.77%) SQL Server
2 913 (11.43%) NoSQL
3 611 (7.65%) MySQL
4 604 (7.56%) MongoDB
5 568 (7.11%) PostgreSQL
6 512 (6.41%) Relational Database
7 364 (4.56%) Big Data
8 312 (3.91%) Hadoop
9 241 (3.02%) Apache Cassandra
10 192 (2.40%) RDBMS
11 145 (1.81%) Redis
12 143 (1.79%) HBase
13 127 (1.59%) SQL Server 2012
14 112 (1.40%) SQL Server 2014
15 99 (1.24%) SQL Server 2016
16 91 (1.14%) Neo4j
17 72 (0.90%) Oracle Database
18 66 (0.83%) Amazon DynamoDB
19 59 (0.74%) Data Warehouse
20 52 (0.65%) Apache Hive
Development Applications
1 1,972 (24.68%) Git (software)
2 1,465 (18.34%) Jenkins
3 803 (10.05%) Maven
4 718 (8.99%) JIRA
5 690 (8.64%) Cucumber
6 680 (8.51%) Selenium
7 566 (7.08%) JUnit
8 339 (4.24%) webpack
9 335 (4.19%) Jasmine
10 331 (4.14%) Gradle
11 330 (4.13%) Mockito
11 330 (4.13%) Subversion
12 329 (4.12%) TeamCity
13 308 (3.86%) NUnit
14 234 (2.93%) gulp
15 223 (2.79%) Visual Studio
16 211 (2.64%) Mocha
17 207 (2.59%) Grunt
17 207 (2.59%) Team Foundation Server
18 206 (2.58%) WebDriver
General
1 1,325 (16.59%) Finance
2 678 (8.49%) Banking
3 311 (3.89%) Retail
4 202 (2.53%) Telecoms
5 198 (2.48%) Marketing
6 197 (2.47%) Games
7 143 (1.79%) Front Office
8 141 (1.76%) Investment Banking
9 134 (1.68%) Manufacturing
10 112 (1.40%) Electronics
10 112 (1.40%) Publishing
11 68 (0.85%) Retail Banking
12 59 (0.74%) Advertising
13 56 (0.70%) Back Office
14 48 (0.60%) Financial Institution
15 43 (0.54%) Law
16 38 (0.48%) Legal
17 27 (0.34%) Automotive
18 8 (0.10%) General Ledger
19 6 (0.075%) Corporate Banking
Job Titles
1 5,984 (74.90%) Developer
2 1,912 (23.93%) Java Developer
3 1,026 (12.84%) Senior Developer
4 955 (11.95%) .NET Developer
5 785 (9.83%) C# Developer
6 584 (7.31%) JavaScript Developer
7 541 (6.77%) React Developer
8 495 (6.20%) Full Stack Developer
9 422 (5.28%) Agile Developer
10 420 (5.26%) Front End Developer (Client-Side Developer)
11 395 (4.94%) Senior Java Developer
12 381 (4.77%) C# .NET Developer
13 290 (3.63%) Node.js Developer
14 273 (3.42%) Software Engineer
15 257 (3.22%) Angular Developer
16 246 (3.08%) Architect
16 246 (3.08%) Scala Developer
17 217 (2.72%) Lead Developer
18 208 (2.60%) Scrum Master
19 206 (2.58%) Tester
Libraries, Frameworks & Software Standards
1 1,897 (23.75%) HTML
2 1,764 (22.08%) .NET
2 1,764 (22.08%) CSS
3 1,505 (18.84%) AngularJS
4 1,465 (18.34%) Spring
5 1,372 (17.17%) RESTful
6 1,363 (17.06%) REST
7 1,351 (16.91%) Web Services
8 1,275 (15.96%) React
9 1,234 (15.45%) Node.js
10 1,017 (12.73%) HTML5
11 786 (9.84%) ASP.NET
12 753 (9.43%) JSON
13 706 (8.84%) Hibernate
14 698 (8.74%) CSS3
15 662 (8.29%) ASP.NET Web API
16 632 (7.91%) Spring Boot
17 611 (7.65%) SOAP
18 554 (6.93%) XML
19 548 (6.86%) jQuery
Miscellaneous
1 797 (9.98%) Greenfield Project
2 445 (5.57%) User Experience
3 331 (4.14%) Mobile App
4 241 (3.02%) Enterprise Software
5 228 (2.85%) Fintech
6 197 (2.47%) Computer Science
7 177 (2.22%) Analytical Skills
8 145 (1.81%) Algorithms
9 131 (1.64%) Virtual Team
10 106 (1.33%) Self-Motivation
11 99 (1.24%) Foreign Exchange (FX)
12 95 (1.19%) Data Structures
13 91 (1.14%) Derivative
14 83 (1.04%) Linux Command Line
15 79 (0.99%) iPad
16 73 (0.91%) Digital Media
17 71 (0.89%) Public Cloud
18 63 (0.79%) Video on Demand
19 46 (0.58%) Equities
20 40 (0.50%) Blog
Operating Systems
1 917 (11.48%) Linux
2 394 (4.93%) Unix
3 315 (3.94%) Android
4 272 (3.40%) Apple iOS
5 261 (3.27%) Windows
6 113 (1.41%) Red Hat Enterprise Linux
7 96 (1.20%) Mac OS X
8 30 (0.38%) Windows Server
9 25 (0.31%) CentOS
10 19 (0.24%) Mac OS
10 19 (0.24%) Solaris
10 19 (0.24%) Ubuntu
10 19 (0.24%) Windows Server 2008
11 15 (0.19%) Windows Server 2012
12 14 (0.18%) HPUX
13 11 (0.14%) Nucleus RTOS
14 8 (0.10%) Embedded Linux
14 8 (0.10%) VMS
14 8 (0.10%) Windows Phone
15 7 (0.088%) Debian
Processes & Methodologies
1 6,111 (76.49%) Agile Software Development
2 3,377 (42.27%) BDD
3 2,345 (29.35%) Scrum
4 2,159 (27.02%) Continuous Integration
5 1,833 (22.94%) Test Automation
6 1,580 (19.78%) Microservices
7 1,388 (17.37%) MVC
8 1,257 (15.73%) DevOps
9 1,138 (14.24%) Kanban
10 1,029 (12.88%) OO
11 930 (11.64%) Software Engineering
12 898 (11.24%) Pair Programming
13 894 (11.19%) Unit Testing
14 713 (8.92%) E-Commerce
15 689 (8.62%) Continuous Delivery
16 635 (7.95%) Open Source
17 609 (7.62%) Front End Development
18 556 (6.96%) SOA
19 485 (6.07%) Web Development
20 481 (6.02%) SOLID
Programming Languages
1 3,378 (42.28%) Java
2 2,963 (37.09%) JavaScript
3 1,902 (23.81%) C#
4 1,351 (16.91%) SQL
5 1,055 (13.21%) Java 8
6 769 (9.63%) Python
7 637 (7.97%) Scala
8 546 (6.83%) Ruby
9 415 (5.19%) ES6
10 336 (4.21%) TypeScript
11 244 (3.05%) Groovy
12 233 (2.92%) PHP
13 232 (2.90%) C++
14 171 (2.14%) T-SQL
15 153 (1.92%) Apple Swift
16 139 (1.74%) Bash Shell
17 137 (1.71%) Shell Script
18 120 (1.50%) Go
19 115 (1.44%) Objective-C
20 111 (1.39%) Kotlin
Qualifications
1 380 (4.76%) Degree
2 374 (4.68%) Security Cleared
3 265 (3.32%) SC Cleared
4 98 (1.23%) Computer Science Degree
5 55 (0.69%) BPSS Clearance
6 50 (0.63%) ISTQB
7 34 (0.43%) ISEB
7 34 (0.43%) Master's Degree
8 24 (0.30%) ISTQB Foundation Certification
9 20 (0.25%) DV Cleared
10 15 (0.19%) PMI Certification
10 15 (0.19%) PMP
11 14 (0.18%) CTC Cleared
12 9 (0.11%) AWS Certification
13 8 (0.10%) DBS Check
13 8 (0.10%) PhD
14 7 (0.088%) Microsoft Certification
15 6 (0.075%) BC Cleared
15 6 (0.075%) ISEB Practitioner
15 6 (0.075%) TOGAF Certification
Quality Assurance & Compliance
1 526 (6.58%) QA
2 45 (0.56%) GCP
3 35 (0.44%) PCI DSS
4 27 (0.34%) GDPR
5 20 (0.25%) Disclosure Scotland
6 17 (0.21%) PMO
7 14 (0.18%) ISO/IEC 27001
8 13 (0.16%) HL7
9 12 (0.15%) MiFID
10 11 (0.14%) Data Quality
11 10 (0.13%) ISO 9001
11 10 (0.13%) PSD2
12 8 (0.10%) WCAG
13 7 (0.088%) SLA
14 5 (0.063%) HMG Security Policy Framework
15 3 (0.038%) IEC 62304
16 2 (0.025%) Dodd-Frank
16 2 (0.025%) EMIR
16 2 (0.025%) SEPA
17 1 (0.013%) FATCA
System Software
1 1,015 (12.70%) Docker
2 72 (0.90%) HDFS
3 63 (0.79%) Apache ZooKeeper
4 51 (0.64%) VMware Infrastructure
5 48 (0.60%) Active Directory
5 48 (0.60%) vSphere
6 19 (0.24%) Virtual Machines
7 6 (0.075%) Xen
8 5 (0.063%) GeoWebCache
8 5 (0.063%) Platform Symphony
8 5 (0.063%) VirtualBox
9 4 (0.050%) Apache Flume
10 3 (0.038%) QEMU
10 3 (0.038%) Veritas Cluster Server
10 3 (0.038%) Virtual Servers
11 2 (0.025%) LXC
11 2 (0.025%) NFS
11 2 (0.025%) OpenIDM
11 2 (0.025%) Varnish
11 2 (0.025%) vCloud
Systems Management
1 392 (4.91%) Ansible
2 378 (4.73%) Puppet
3 317 (3.97%) Opscode Chef
4 255 (3.19%) Kubernetes
5 179 (2.24%) Terraform
6 69 (0.86%) Kibana
7 68 (0.85%) Mesos
8 66 (0.83%) Grafana
9 61 (0.76%) Hadoop YARN
10 52 (0.65%) logstash
11 27 (0.34%) Cobbler
12 26 (0.33%) Consul
13 25 (0.31%) Business Desktop Deployment
13 25 (0.31%) Docker Swarm
13 25 (0.31%) HP ALM
14 21 (0.26%) Packer
15 19 (0.24%) Single Sign-On
16 18 (0.23%) HP Quality Center
17 17 (0.21%) Salt
18 15 (0.19%) Prometheus
Vendors
1 587 (7.35%) Oracle
2 404 (5.06%) Microsoft
3 206 (2.58%) Google
4 121 (1.51%) Splunk
5 119 (1.49%) SAP
6 94 (1.18%) IBM
7 89 (1.11%) Red Hat
8 79 (0.99%) Sitecore
9 74 (0.93%) Adobe
10 67 (0.84%) Atlassian
10 67 (0.84%) VMware
11 64 (0.80%) WSO2
12 58 (0.73%) AppDynamics
13 48 (0.60%) Salesforce.com
14 43 (0.54%) HP
15 35 (0.44%) Perforce
16 34 (0.43%) Xamarin
17 33 (0.41%) Apple
17 33 (0.41%) Cloudera
18 32 (0.40%) MuleSoft