Period
to 20 November 2017

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 20 November 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)
UK
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 14 28 30
Rank change year-on-year +14 +2 +4
Contract jobs citing TDD 7889 6548 6426
As % of all contract IT jobs advertised in the UK 7.71% 6.30% 5.62%
As % of the Processes & Methodologies category 9.13% 7.50% 6.87%
Number of daily rates quoted 6175 5218 5001
UK median daily rate £488 £450 £438
Median daily rate % change year-on-year +8.33% +2.86% +2.94%
10th Percentile £350 £325 £313
90th Percentile £625 £600 £600
UK excluding London median daily rate £425 £425 £380
% change year-on-year - +11.84% +1.33%
Number of hourly rates quoted 59 26 25
UK median hourly rate £45.00 £42.50 £40.00
Median hourly rate % change year-on-year +5.88% +6.25% -
10th Percentile £36.00 £31.58 £27.50
90th Percentile £63.75 £48.75 £50.00
UK excluding London median hourly rate £45.00 £37.02 £40.00
% change year-on-year +21.56% -7.45% +14.29%

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 86424 87276 93513
As % of all contract IT jobs advertised in the UK 84.51% 83.91% 81.77%
Number of daily rates quoted 57570 57725 60596
UK median daily rate £450 £425 £413
Median daily rate % change year-on-year +5.88% +3.03% +3.13%
10th Percentile £281 £263 £263
90th Percentile £630 £600 £600
UK excluding London median daily rate £400 £400 £385
% change year-on-year - +3.90% +2.67%
Number of hourly rates quoted 2044 2323 2749
UK median hourly rate £23.63 £24.00 £22.50
Median hourly rate % change year-on-year -1.56% +6.67% +18.42%
10th Percentile £11.44 £11.26 £11.50
90th Percentile £49.75 £48.75 £47.71
UK excluding London median hourly rate £24.00 £24.50 £23.75
% change year-on-year -2.04% +3.16% +18.75%

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 20 November 2017.

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 20 November 2017.

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 20 November 2017. 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 +14 7510 £500 +8.11% 1298
London +6 4710 £513 +5.13% 674
UK excluding London +3 3126 £425 - 678
South East +15 956 £425 -3.52% 180
North of England 0 732 £413 -2.94% 212
East of England +18 515 £494 +3.95% 87
Midlands +25 413 £390 -2.50% 70
North West -2 357 £400 -5.88% 110
Yorkshire -3 307 £425 - 92
West Midlands +29 241 £400 -1.60% 32
Scotland -2 227 £400 +3.23% 40
South West -11 199 £400 +6.67% 74
East Midlands +22 171 £389 +1.63% 38
North East +10 78 £399 -6.18% 10
Northern Ireland -10 77 £420 +9.09% 5
Wales -43 37 £425 -10.53% 10

For the 6 months to 20 November 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 with a requirement for TDD.

1 6030 (76.44%) Agile Software Development
2 3499 (44.35%) Java
3 3177 (40.27%) BDD
4 2911 (36.90%) JavaScript
5 2517 (31.91%) Scrum
6 2273 (28.81%) Continuous Integration
7 2052 (26.01%) HTML
8 1903 (24.12%) CSS
9 1801 (22.83%) Git (software)
10 1702 (21.57%) C#
11 1665 (21.11%) AngularJS
12 1632 (20.69%) Test Automation
13 1621 (20.55%) .NET
14 1495 (18.95%) Finance
15 1418 (17.97%) MVC
16 1417 (17.96%) Spring
17 1373 (17.40%) Microservices
18 1362 (17.26%) Web Services
19 1357 (17.20%) SQL
20 1313 (16.64%) Jenkins
21 1297 (16.44%) REST
22 1283 (16.26%) Node.js
23 1273 (16.14%) RESTful
24 1204 (15.26%) Amazon AWS
25 1203 (15.25%) HTML5
26 1166 (14.78%) React
27 1136 (14.40%) Kanban
28 1106 (14.02%) DevOps
29 1105 (14.01%) OO
30 996 (12.63%) NoSQL

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
1 483 (6.12%) Confluence
2 345 (4.37%) Apache Spark
3 286 (3.63%) Elasticsearch
4 259 (3.28%) Tomcat
5 246 (3.12%) Apache
6 211 (2.67%) CMS
7 192 (2.43%) WebSphere
8 186 (2.36%) JBoss
9 183 (2.32%) Oracle SOA Suite
10 164 (2.08%) WebLogic
11 142 (1.80%) Apache Solr
12 128 (1.62%) Mule
13 109 (1.38%) OpenStack
14 95 (1.20%) Cloud Foundry
15 77 (0.98%) Oracle Service Bus
16 56 (0.71%) Sitecore CMS
17 54 (0.68%) EPiServer
18 52 (0.66%) IIS
19 51 (0.65%) Jetty
20 49 (0.62%) NServiceBus
Applications
1 47 (0.60%) Photoshop
2 26 (0.33%) Microsoft Excel
3 22 (0.28%) Microsoft Office
4 19 (0.24%) MS Visio
5 10 (0.13%) Adobe Illustrator
6 6 (0.076%) Adobe Creative Suite
7 4 (0.051%) Adobe After Effects
7 4 (0.051%) Microsoft Project
7 4 (0.051%) Spreadsheet
8 3 (0.038%) Fireworks
9 2 (0.025%) InVision
10 1 (0.013%) GIMP
10 1 (0.013%) InfoPath
10 1 (0.013%) Microsoft PowerPoint
Business Applications
1 29 (0.37%) Payment Gateway
2 26 (0.33%) Dynamics CRM
3 24 (0.30%) ION MarketView
4 21 (0.27%) Magento
5 20 (0.25%) SAP Hybris
6 10 (0.13%) Bloomberg TOMS
7 9 (0.11%) RMDS
8 6 (0.076%) Oracle Retail
9 5 (0.063%) Dynamics AX
9 5 (0.063%) Endur
9 5 (0.063%) Oracle BPM
10 4 (0.051%) Eloqua
10 4 (0.051%) Oracle Financials
10 4 (0.051%) PeopleSoft Financials
10 4 (0.051%) SunGard GMI
11 3 (0.038%) MetaTrader
12 2 (0.025%) Oracle Cash Management
12 2 (0.025%) Oracle ERP
12 2 (0.025%) Oracle SCM
12 2 (0.025%) Salesforce.com CRM
Cloud Services
1 1204 (15.26%) Amazon AWS
2 731 (9.27%) Microsoft Azure
3 347 (4.40%) GitHub
4 185 (2.35%) npm
5 115 (1.46%) PaaS
5 115 (1.46%) Serverless
6 110 (1.39%) Amazon EC2
7 83 (1.05%) Amazon S3
8 70 (0.89%) Google Cloud Platform
9 62 (0.79%) AWS Lambda
10 54 (0.68%) Cloud Computing
11 52 (0.66%) IaaS
12 51 (0.65%) Slack
13 45 (0.57%) SaaS
14 41 (0.52%) OpenShift
15 39 (0.49%) Amazon SQS
16 38 (0.48%) AWS CloudFormation
17 31 (0.39%) Heroku
18 27 (0.34%) Yarn
19 22 (0.28%) Google Play
Communications & Networking
1 240 (3.04%) HTTP
2 103 (1.31%) Internet
3 81 (1.03%) Kerberos
4 80 (1.01%) SSL
4 80 (1.01%) TCP/IP
5 54 (0.68%) SMS
6 29 (0.37%) AMQP
7 28 (0.35%) Bluetooth
8 23 (0.29%) DNS
8 23 (0.29%) LDAP
9 13 (0.16%) Network Security
10 12 (0.15%) FTP
11 11 (0.14%) FIX Connectivity
12 8 (0.10%) 3GPP
12 8 (0.10%) Intranet
12 8 (0.10%) SAN
12 8 (0.10%) Wireless
13 7 (0.089%) LTE
14 6 (0.076%) SSH
14 6 (0.076%) Wi-Fi
Database & Business Intelligence
1 996 (12.63%) NoSQL
2 932 (11.81%) SQL Server
3 646 (8.19%) MongoDB
4 576 (7.30%) MySQL
5 534 (6.77%) PostgreSQL
6 500 (6.34%) Hadoop
7 497 (6.30%) Big Data
8 482 (6.11%) Relational Database
9 248 (3.14%) Apache Cassandra
10 226 (2.86%) HBase
11 223 (2.83%) RDBMS
12 113 (1.43%) Redis
13 109 (1.38%) Apache Hive
14 92 (1.17%) SQL Server 2012
15 82 (1.04%) Oracle Database
16 81 (1.03%) SQL Server Integration Services
17 70 (0.89%) Amazon DynamoDB
18 69 (0.87%) SQL Server 2014
19 67 (0.85%) SQL Server Reporting Services
20 60 (0.76%) SQL Server 2008
Development Applications
1 1801 (22.83%) Git (software)
2 1313 (16.64%) Jenkins
3 887 (11.24%) JIRA
4 716 (9.08%) Cucumber
5 629 (7.97%) Maven
6 607 (7.69%) Selenium
7 591 (7.49%) JUnit
8 358 (4.54%) TeamCity
9 337 (4.27%) Jasmine
10 317 (4.02%) Mockito
11 298 (3.78%) Subversion
12 289 (3.66%) gulp
13 283 (3.59%) Gradle
14 272 (3.45%) Grunt
15 250 (3.17%) NUnit
16 239 (3.03%) webpack
17 212 (2.69%) Mocha
18 195 (2.47%) Team Foundation Server
19 194 (2.46%) IntelliJ
20 189 (2.40%) WebDriver
General
1 1495 (18.95%) Finance
2 883 (11.19%) Banking
3 294 (3.73%) Marketing
4 281 (3.56%) Retail
5 274 (3.47%) Telecoms
6 265 (3.36%) Front Office
7 262 (3.32%) Investment Banking
8 217 (2.75%) Manufacturing
9 200 (2.54%) Electronics
10 135 (1.71%) Publishing
11 125 (1.58%) Games
12 86 (1.09%) Financial Institution
13 77 (0.98%) Retail Banking
14 66 (0.84%) Law
15 65 (0.82%) Advertising
16 61 (0.77%) Back Office
17 45 (0.57%) Automotive
17 45 (0.57%) Legal
18 16 (0.20%) Corporate Banking
19 15 (0.19%) Billing
Job Titles
1 6039 (76.55%) Developer
2 1921 (24.35%) Java Developer
3 1079 (13.68%) Senior Developer
4 964 (12.22%) .NET Developer
5 741 (9.39%) C# Developer
6 700 (8.87%) JavaScript Developer
7 544 (6.90%) Agile Developer
8 523 (6.63%) Full Stack Developer
9 415 (5.26%) C# .NET Developer
10 413 (5.24%) Front End Developer (Client-Side Developer)
11 377 (4.78%) Senior Java Developer
12 316 (4.01%) Angular Developer
13 283 (3.59%) Node.js Developer
14 267 (3.38%) Scala Developer
15 233 (2.95%) Architect
16 232 (2.94%) Agile Java Developer
17 228 (2.89%) HTML Developer
18 219 (2.78%) Lead Developer
19 213 (2.70%) Software Engineer
20 210 (2.66%) Analyst
Libraries, Frameworks & Software Standards
1 2052 (26.01%) HTML
2 1903 (24.12%) CSS
3 1665 (21.11%) AngularJS
4 1621 (20.55%) .NET
5 1417 (17.96%) Spring
6 1362 (17.26%) Web Services
7 1297 (16.44%) REST
8 1283 (16.26%) Node.js
9 1273 (16.14%) RESTful
10 1203 (15.25%) HTML5
11 1166 (14.78%) React
12 760 (9.63%) CSS3
13 720 (9.13%) JSON
14 713 (9.04%) ASP.NET
15 646 (8.19%) XML
16 619 (7.85%) ASP.NET Web API
17 580 (7.35%) Hibernate
18 565 (7.16%) SOAP
19 559 (7.09%) Spring Boot
20 513 (6.50%) jQuery
Miscellaneous
1 589 (7.47%) Greenfield Project
2 461 (5.84%) User Experience
3 333 (4.22%) Mobile App
4 259 (3.28%) Computer Science
5 230 (2.92%) Analytical Skills
6 218 (2.76%) Enterprise Software
7 201 (2.55%) Algorithms
8 172 (2.18%) Fintech
9 158 (2.00%) Data Structures
10 141 (1.79%) Virtual Team
11 140 (1.77%) Derivative
12 133 (1.69%) Foreign Exchange (FX)
13 90 (1.14%) iPad
14 85 (1.08%) N-Tier
15 80 (1.01%) Fixed Income
16 78 (0.99%) Equities
17 63 (0.80%) Digital Media
18 59 (0.75%) iPhone
19 58 (0.74%) Public Cloud
20 57 (0.72%) Linux Command Line
Operating Systems
1 810 (10.27%) Linux
2 370 (4.69%) Unix
3 309 (3.92%) Windows
4 308 (3.90%) Apple iOS
5 290 (3.68%) Android
6 138 (1.75%) Red Hat Enterprise Linux
7 72 (0.91%) Mac OS X
8 44 (0.56%) Windows Server
9 30 (0.38%) Solaris
10 20 (0.25%) HPUX
11 16 (0.20%) Ubuntu
12 14 (0.18%) CoreOS
13 13 (0.16%) CentOS
13 13 (0.16%) Windows Server 2008
14 11 (0.14%) Mac OS
14 11 (0.14%) Windows Server 2012
15 10 (0.13%) Oracle Linux
16 7 (0.089%) AIX
17 6 (0.076%) VMS
18 4 (0.051%) Windows Mobile
Processes & Methodologies
1 6030 (76.44%) Agile Software Development
2 3177 (40.27%) BDD
3 2517 (31.91%) Scrum
4 2273 (28.81%) Continuous Integration
5 1632 (20.69%) Test Automation
6 1418 (17.97%) MVC
7 1373 (17.40%) Microservices
8 1136 (14.40%) Kanban
9 1106 (14.02%) DevOps
10 1105 (14.01%) OO
11 994 (12.60%) Pair Programming
12 943 (11.95%) Software Engineering
13 762 (9.66%) Unit Testing
14 671 (8.51%) SOA
15 661 (8.38%) E-Commerce
16 648 (8.21%) Continuous Delivery
17 636 (8.06%) Front End Development
18 619 (7.85%) Open Source
19 535 (6.78%) Web Development
20 510 (6.46%) SOLID
Programming Languages
1 3499 (44.35%) Java
2 2911 (36.90%) JavaScript
3 1702 (21.57%) C#
4 1357 (17.20%) SQL
5 776 (9.84%) Python
6 627 (7.95%) Scala
7 480 (6.08%) Ruby
8 377 (4.78%) ES6
9 227 (2.88%) TypeScript
10 210 (2.66%) Apple Swift
11 208 (2.64%) Groovy
12 203 (2.57%) PHP
13 192 (2.43%) C++
14 176 (2.23%) T-SQL
15 173 (2.19%) Objective-C
16 143 (1.81%) Go
17 124 (1.57%) Shell Script
18 105 (1.33%) C
19 99 (1.25%) XPath
20 80 (1.01%) PowerShell
Qualifications
1 389 (4.93%) Degree
2 331 (4.20%) Security Cleared
3 228 (2.89%) SC Cleared
4 152 (1.93%) Computer Science Degree
5 40 (0.51%) ISEB
6 35 (0.44%) Master's Degree
7 34 (0.43%) ISTQB
8 27 (0.34%) BPSS Clearance
9 25 (0.32%) PMI Certification
10 19 (0.24%) PhD
11 18 (0.23%) PMP
12 17 (0.22%) DV Cleared
13 15 (0.19%) Microsoft Certification
14 14 (0.18%) CTC Cleared
15 12 (0.15%) DBS Check
16 10 (0.13%) PRINCE2 Practitioner
17 7 (0.089%) ISTQB Foundation Certification
17 7 (0.089%) MCSD
18 6 (0.076%) Sun Certification
19 4 (0.051%) RHCE
Quality Assurance & Compliance
1 531 (6.73%) QA
2 49 (0.62%) MiFID
3 40 (0.51%) WCAG
4 22 (0.28%) Disclosure Scotland
5 21 (0.27%) Data Quality
6 14 (0.18%) GCP
6 14 (0.18%) PCI DSS
7 13 (0.16%) WAI
8 12 (0.15%) GDPR
9 10 (0.13%) EMIR
10 6 (0.076%) SLA
11 5 (0.063%) ISO/IEC 27001
12 4 (0.051%) Dodd-Frank
12 4 (0.051%) PSD2
13 3 (0.038%) Cyber Essentials
14 2 (0.025%) ISO 9001
14 2 (0.025%) PMO
15 1 (0.013%) ISO 14001
15 1 (0.013%) ISO/IEC 20000
15 1 (0.013%) SEPA
System Software
1 882 (11.18%) Docker
2 131 (1.66%) HDFS
3 95 (1.20%) Apache ZooKeeper
4 44 (0.56%) Active Directory
5 20 (0.25%) VMware Infrastructure
6 16 (0.20%) Apache Flume
6 16 (0.20%) vSphere
7 14 (0.18%) Virtual Machines
8 8 (0.10%) LXC
9 6 (0.076%) Firmware
9 6 (0.076%) NFS
9 6 (0.076%) Varnish
10 4 (0.051%) vCloud
11 2 (0.025%) OpenAM
11 2 (0.025%) OpenDJ
11 2 (0.025%) OpenIDM
12 1 (0.013%) Virtual Servers
12 1 (0.013%) VirtualBox
12 1 (0.013%) VMware ESXi
12 1 (0.013%) zsh
Systems Management
1 439 (5.56%) Ansible
2 364 (4.61%) Puppet
3 327 (4.15%) Opscode Chef
4 266 (3.37%) Kubernetes
5 156 (1.98%) Terraform
6 72 (0.91%) Kibana
7 66 (0.84%) Grafana
8 61 (0.77%) logstash
9 49 (0.62%) Mesos
10 39 (0.49%) Hadoop YARN
11 35 (0.44%) Business Desktop Deployment
12 34 (0.43%) Cobbler
13 22 (0.28%) ZABBIX
14 18 (0.23%) Oozie
15 17 (0.22%) ITRS Geneos
16 15 (0.19%) Packer
17 14 (0.18%) Nagios
18 11 (0.14%) Control-M
19 10 (0.13%) Consul
19 10 (0.13%) Rancher
Vendors
1 741 (9.39%) Oracle
2 478 (6.06%) Microsoft
3 213 (2.70%) SAP
4 134 (1.70%) Google
5 120 (1.52%) WSO2
6 98 (1.24%) IBM
7 97 (1.23%) Splunk
8 86 (1.09%) Red Hat
8 86 (1.09%) Sitecore
9 82 (1.04%) Apple
10 73 (0.93%) AppDynamics
11 70 (0.89%) Adobe
12 60 (0.76%) Cloudera
13 54 (0.68%) Salesforce.com
13 54 (0.68%) Xamarin
14 53 (0.67%) Atlassian
14 53 (0.67%) Perforce
15 49 (0.62%) New Relic
16 43 (0.55%) HP
17 41 (0.52%) hybris