Period
to 16 August 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 16 August 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
16 Aug 2017
Same period 2016 Same period 2015
Rank 20 31 31
Rank change year-on-year +11 0 +7
Contract jobs citing TDD 7078 6429 5698
As % of all contract IT jobs advertised in the UK 7.40% 5.90% 5.06%
As % of the Processes & Methodologies category 8.77% 7.07% 6.26%
Number of daily rates quoted 5527 5155 4313
UK median daily rate £475 £450 £425
Median daily rate % change year-on-year +5.56% +5.88% +3.03%
10th Percentile £335 £320 £313
90th Percentile £625 £613 £588
UK excluding London median daily rate £420 £420 £375
% change year-on-year - +12.00% -
Number of hourly rates quoted 42 28 21
UK median hourly rate £41.50 £41.15 £42.50
Median hourly rate % change year-on-year +0.86% -3.19% -18.66%
10th Percentile £35.00 £30.78 £27.50
90th Percentile £63.75 £47.88 £50.00
UK excluding London median hourly rate £42.00 £40.00 £42.50
% change year-on-year +5.00% -5.88% +6.25%

TDD is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for process and methodology skills.

Contract Process & Methodology Skills
UK
Contract job vacancies with a requirement for process and methodology skills 80665 90976 91007
As % of all contract IT job vacancies advertised in the UK 84.35% 83.47% 80.78%
Number of daily rates quoted 52984 60071 57896
UK median daily rate £450 £425 £400
Median daily rate % change year-on-year +5.88% +6.25% -
10th Percentile £281 £263 £259
90th Percentile £625 £600 £588
UK excluding London median daily rate £400 £400 £375
% change year-on-year - +6.67% +3.45%
Number of hourly rates quoted 1998 2199 2592
UK median hourly rate £25.00 £25.00 £22.12
Median hourly rate % change year-on-year - +13.05% +7.88%
10th Percentile £11.72 £11.50 £11.25
90th Percentile £50.25 £48.55 £48.75
UK excluding London median hourly rate £25.00 £25.00 £22.50
% change year-on-year - +11.11% +4.65%

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 16 August 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 16 August 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 16 August 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 +12 6748 £475 +5.56% 1142
London +6 4116 £500 +2.56% 621
UK excluding London +7 2904 £420 - 569
South East +16 838 £425 - 142
North of England +1 770 £400 -5.88% 173
East of England +35 505 £488 +18.90% 71
Midlands +33 371 £375 -11.76% 56
North West +2 353 £400 -4.76% 101
Yorkshire -1 339 £425 -5.56% 65
West Midlands +25 208 £375 -11.76% 30
Scotland +30 182 £413 +10.00% 36
South West -11 164 £408 +8.67% 77
East Midlands +34 158 £380 -5.00% 26
North East +34 81 £340 -15.00% 7
Northern Ireland -11 51 £403 -7.89% 3
Wales -32 46 £425 +6.25% 11

For the 6 months to 16 August 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 5460 (77.14%) Agile Software Development
2 3120 (44.08%) Java
3 2662 (37.61%) JavaScript
4 2632 (37.19%) BDD
5 2256 (31.87%) Scrum
6 1932 (27.30%) Continuous Integration
7 1926 (27.21%) HTML
8 1794 (25.35%) CSS
9 1652 (23.34%) Git (software)
10 1615 (22.82%) AngularJS
11 1527 (21.57%) C#
12 1476 (20.85%) Test Automation
13 1422 (20.09%) .NET
14 1360 (19.21%) Finance
15 1275 (18.01%) SQL
16 1265 (17.87%) MVC
17 1256 (17.75%) Spring
18 1209 (17.08%) Jenkins
19 1137 (16.06%) Node.js
20 1135 (16.04%) REST
21 1126 (15.91%) DevOps
22 1125 (15.89%) Web Services
23 1118 (15.80%) HTML5
24 1103 (15.58%) OO
25 1082 (15.29%) Microservices
26 1006 (14.21%) RESTful
27 976 (13.79%) React
28 970 (13.70%) Kanban
29 841 (11.88%) Amazon AWS
30 832 (11.75%) 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
1 391 (5.52%) Confluence
2 283 (4.00%) Apache Spark
3 265 (3.74%) Elasticsearch
4 226 (3.19%) Apache
5 179 (2.53%) Oracle SOA Suite
6 176 (2.49%) WebSphere
7 172 (2.43%) CMS
8 171 (2.42%) JBoss
9 167 (2.36%) Tomcat
10 137 (1.94%) Apache Solr
11 135 (1.91%) Mule
12 116 (1.64%) WebLogic
13 92 (1.30%) Cloud Foundry
14 77 (1.09%) OpenStack
15 76 (1.07%) Oracle Service Bus
16 48 (0.68%) IIS
17 47 (0.66%) SharePoint
18 44 (0.62%) Sitecore CMS
19 43 (0.61%) NServiceBus
20 36 (0.51%) WebSphere Application Server
Applications
1 67 (0.95%) Photoshop
2 42 (0.59%) Microsoft Office
3 27 (0.38%) Microsoft Excel
4 20 (0.28%) MS Visio
5 16 (0.23%) Adobe Illustrator
6 12 (0.17%) Adobe Creative Suite
7 9 (0.13%) Spreadsheet
8 5 (0.071%) Adobe After Effects
9 4 (0.057%) Microsoft Project
10 2 (0.028%) Fireworks
10 2 (0.028%) InVision
10 2 (0.028%) OmniGraffle
11 1 (0.014%) GIMP
11 1 (0.014%) HipChat
11 1 (0.014%) Microsoft PowerPoint
Business Applications
1 34 (0.48%) Dynamics CRM
2 30 (0.42%) Payment Gateway
3 27 (0.38%) ION MarketView
3 27 (0.38%) SAP Hybris
4 17 (0.24%) Magento
5 10 (0.14%) Dynamics AX
6 7 (0.099%) RMDS
7 6 (0.085%) Eloqua
8 4 (0.057%) Oracle BPM
9 3 (0.042%) Endur
9 3 (0.042%) SDL Web 8
10 2 (0.028%) Bloomberg TOMS
10 2 (0.028%) Oracle CRM
10 2 (0.028%) Oracle Retail
10 2 (0.028%) R3 Corda
10 2 (0.028%) Salesforce.com CRM
10 2 (0.028%) Siebel CRM
11 1 (0.014%) FastStats
11 1 (0.014%) Pega PRPC
11 1 (0.014%) Sage X3
Cloud Services
1 841 (11.88%) Amazon AWS
2 550 (7.77%) Microsoft Azure
3 308 (4.35%) GitHub
4 104 (1.47%) PaaS
5 89 (1.26%) Amazon EC2
6 63 (0.89%) AWS Lambda
7 55 (0.78%) IaaS
8 50 (0.71%) SaaS
9 48 (0.68%) Amazon S3
10 47 (0.66%) AWS CloudFormation
10 47 (0.66%) Cloud Computing
11 34 (0.48%) Amazon SQS
11 34 (0.48%) Google Cloud Platform
12 32 (0.45%) Heroku
13 30 (0.42%) OpenShift
14 26 (0.37%) Slack
15 15 (0.21%) Amazon CloudWatch
15 15 (0.21%) Google Play
15 15 (0.21%) Sauce Labs
16 14 (0.20%) Google Analytics
Communications & Networking
1 247 (3.49%) HTTP
2 102 (1.44%) Internet
3 95 (1.34%) SSL
4 62 (0.88%) Kerberos
5 61 (0.86%) TCP/IP
6 36 (0.51%) LDAP
7 31 (0.44%) SMS
8 27 (0.38%) DNS
9 18 (0.25%) Network Security
10 16 (0.23%) AMQP
11 15 (0.21%) Firewall
12 11 (0.16%) Bluetooth
13 7 (0.099%) FTP
13 7 (0.099%) Intranet
14 6 (0.085%) DVB
14 6 (0.085%) MQTT
15 5 (0.071%) DHCP
15 5 (0.071%) FIX Connectivity
15 5 (0.071%) Unified Communications
16 4 (0.057%) WAN
Database & Business Intelligence
1 832 (11.75%) SQL Server
2 787 (11.12%) NoSQL
3 596 (8.42%) MongoDB
4 503 (7.11%) MySQL
5 460 (6.50%) Big Data
6 455 (6.43%) Relational Database
7 406 (5.74%) PostgreSQL
8 403 (5.69%) Hadoop
9 205 (2.90%) Apache Cassandra
10 184 (2.60%) HBase
11 167 (2.36%) RDBMS
12 94 (1.33%) Redis
13 91 (1.29%) SQL Server 2012
14 87 (1.23%) SQL Server Integration Services
15 86 (1.22%) Apache Hive
15 86 (1.22%) SQL Server 2008
16 82 (1.16%) Oracle Database
17 68 (0.96%) Amazon DynamoDB
18 65 (0.92%) SQL Server Reporting Services
19 47 (0.66%) Data Warehouse
Development Applications
1 1652 (23.34%) Git (software)
2 1209 (17.08%) Jenkins
3 801 (11.32%) JIRA
4 620 (8.76%) Cucumber
5 572 (8.08%) JUnit
6 563 (7.95%) Selenium
7 516 (7.29%) Maven
8 339 (4.79%) TeamCity
9 327 (4.62%) Subversion
10 313 (4.42%) Jasmine
11 296 (4.18%) gulp
12 277 (3.91%) Grunt
13 271 (3.83%) Mockito
14 262 (3.70%) Team Foundation Server
15 257 (3.63%) Gradle
16 227 (3.21%) Mocha
17 200 (2.83%) webpack
18 197 (2.78%) NUnit
18 197 (2.78%) WebDriver
19 177 (2.50%) Visual Studio
General
1 1360 (19.21%) Finance
2 788 (11.13%) Banking
3 309 (4.37%) Front Office
4 300 (4.24%) Marketing
5 289 (4.08%) Retail
6 268 (3.79%) Investment Banking
7 263 (3.72%) Telecoms
8 230 (3.25%) Manufacturing
9 221 (3.12%) Electronics
10 113 (1.60%) Games
11 77 (1.09%) Publishing
12 74 (1.05%) Financial Institution
13 63 (0.89%) Back Office
14 50 (0.71%) Advertising
15 41 (0.58%) Legal
16 37 (0.52%) Law
17 35 (0.49%) Automotive
18 25 (0.35%) Corporate Banking
19 22 (0.31%) Retail Banking
20 15 (0.21%) Billing
Job Titles
1 5393 (76.19%) Developer
2 1698 (23.99%) Java Developer
3 933 (13.18%) Senior Developer
4 826 (11.67%) .NET Developer
5 672 (9.49%) C# Developer
6 646 (9.13%) JavaScript Developer
7 547 (7.73%) Agile Developer
8 450 (6.36%) Full Stack Developer
9 402 (5.68%) Front End Developer (Client-Side Developer)
10 366 (5.17%) C# .NET Developer
11 345 (4.87%) Senior Java Developer
12 333 (4.70%) Angular Developer
13 272 (3.84%) Node.js Developer
14 251 (3.55%) Agile Java Developer
15 226 (3.19%) HTML Developer
16 215 (3.04%) Scala Developer
17 211 (2.98%) Architect
18 202 (2.85%) UI Developer
19 196 (2.77%) Analyst
20 193 (2.73%) Tester
Libraries, Frameworks & Software Standards
1 1926 (27.21%) HTML
2 1794 (25.35%) CSS
3 1615 (22.82%) AngularJS
4 1422 (20.09%) .NET
5 1256 (17.75%) Spring
6 1137 (16.06%) Node.js
7 1135 (16.04%) REST
8 1125 (15.89%) Web Services
9 1118 (15.80%) HTML5
10 1006 (14.21%) RESTful
11 976 (13.79%) React
12 735 (10.38%) JSON
13 698 (9.86%) CSS3
14 660 (9.32%) XML
15 640 (9.04%) ASP.NET
16 576 (8.14%) jQuery
17 532 (7.52%) SOAP
18 469 (6.63%) Hibernate
19 449 (6.34%) ASP.NET Web API
20 415 (5.86%) Spring Boot
Miscellaneous
1 582 (8.22%) Greenfield Project
2 441 (6.23%) User Experience
3 305 (4.31%) Mobile App
4 251 (3.55%) Analytical Skills
5 233 (3.29%) Computer Science
6 187 (2.64%) Enterprise Software
7 162 (2.29%) Algorithms
8 139 (1.96%) Derivative
8 139 (1.96%) Fintech
9 118 (1.67%) Foreign Exchange (FX)
10 115 (1.62%) Data Structures
11 103 (1.46%) Virtual Team
12 90 (1.27%) Fixed Income
13 87 (1.23%) iPad
14 73 (1.03%) Equities
15 70 (0.99%) iPhone
16 57 (0.81%) Client/Server
17 54 (0.76%) Public Cloud
18 52 (0.73%) Linux Command Line
19 49 (0.69%) Hedge funds
Operating Systems
1 766 (10.82%) Linux
2 374 (5.28%) Unix
3 300 (4.24%) Windows
4 268 (3.79%) Apple iOS
5 260 (3.67%) Android
6 120 (1.70%) Mac OS X
7 100 (1.41%) Red Hat Enterprise Linux
8 37 (0.52%) Windows Server
9 36 (0.51%) Solaris
10 20 (0.28%) HPUX
11 16 (0.23%) CentOS
12 15 (0.21%) Ubuntu
13 11 (0.16%) CoreOS
14 10 (0.14%) Mac OS
15 9 (0.13%) VMS
16 6 (0.085%) AIX
16 6 (0.085%) Windows Server 2012
17 5 (0.071%) Windows Server 2008
18 4 (0.057%) Embedded Linux
19 3 (0.042%) Windows Mobile
Processes & Methodologies
1 5460 (77.14%) Agile Software Development
2 2632 (37.19%) BDD
3 2256 (31.87%) Scrum
4 1932 (27.30%) Continuous Integration
5 1476 (20.85%) Test Automation
6 1265 (17.87%) MVC
7 1126 (15.91%) DevOps
8 1103 (15.58%) OO
9 1082 (15.29%) Microservices
10 970 (13.70%) Kanban
11 804 (11.36%) Pair Programming
12 798 (11.27%) Software Engineering
13 688 (9.72%) SOA
14 671 (9.48%) Unit Testing
15 670 (9.47%) E-Commerce
16 617 (8.72%) Front End Development
17 563 (7.95%) Open Source
18 530 (7.49%) Web Development
19 516 (7.29%) Continuous Delivery
20 467 (6.60%) SOLID
Programming Languages
1 3120 (44.08%) Java
2 2662 (37.61%) JavaScript
3 1527 (21.57%) C#
4 1275 (18.01%) SQL
5 704 (9.95%) Python
6 567 (8.01%) Scala
7 412 (5.82%) Ruby
8 271 (3.83%) ES6
9 205 (2.90%) TypeScript
10 204 (2.88%) C++
11 195 (2.76%) Groovy
12 193 (2.73%) PHP
13 177 (2.50%) Apple Swift
14 162 (2.29%) T-SQL
15 144 (2.03%) Objective-C
16 127 (1.79%) Shell Script
17 116 (1.64%) Go
18 101 (1.43%) Perl
19 100 (1.41%) XPath
20 98 (1.38%) C
Qualifications
1 326 (4.61%) Degree
2 300 (4.24%) Security Cleared
3 199 (2.81%) SC Cleared
4 114 (1.61%) Computer Science Degree
5 44 (0.62%) BPSS Clearance
6 43 (0.61%) ISEB
7 39 (0.55%) ISTQB
8 34 (0.48%) DV Cleared
9 18 (0.25%) Master's Degree
10 14 (0.20%) PhD
11 13 (0.18%) CTC Cleared
11 13 (0.18%) PMI Certification
12 12 (0.17%) PRINCE2 Practitioner
13 11 (0.16%) DBS Check
14 10 (0.14%) Microsoft Certification
15 8 (0.11%) Numerate Degree
15 8 (0.11%) PMP
15 8 (0.11%) RHCE
15 8 (0.11%) RHCSA
16 6 (0.085%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 536 (7.57%) QA
2 47 (0.66%) MiFID
3 41 (0.58%) WCAG
4 36 (0.51%) Data Quality
5 30 (0.42%) Disclosure Scotland
6 15 (0.21%) WAI
7 9 (0.13%) EMIR
8 8 (0.11%) PCI DSS
8 8 (0.11%) SLA
9 5 (0.071%) Dodd-Frank
10 4 (0.057%) FATCA
10 4 (0.057%) GDPR
11 3 (0.042%) Cyber Essentials
12 2 (0.028%) GCP
12 2 (0.028%) GxP
12 2 (0.028%) ISO 22301
13 1 (0.014%) IFRS
13 1 (0.014%) ISO 14001
13 1 (0.014%) ISO 9001
13 1 (0.014%) PMO
System Software
1 634 (8.96%) Docker
2 99 (1.40%) HDFS
3 80 (1.13%) Apache ZooKeeper
4 26 (0.37%) Active Directory
5 24 (0.34%) Apache Flume
6 12 (0.17%) VMware Infrastructure
7 9 (0.13%) Varnish
8 8 (0.11%) Virtual Machines
9 5 (0.071%) Firmware
9 5 (0.071%) LXC
9 5 (0.071%) NFS
9 5 (0.071%) vCloud
9 5 (0.071%) vSphere
10 2 (0.028%) OpenAM
10 2 (0.028%) OpenDJ
10 2 (0.028%) OpenIDM
10 2 (0.028%) zsh
11 1 (0.014%) iptables
11 1 (0.014%) VMware ESXi
11 1 (0.014%) Xen
Systems Management
1 308 (4.35%) Ansible
2 293 (4.14%) Puppet
3 252 (3.56%) Opscode Chef
4 183 (2.59%) Kubernetes
5 128 (1.81%) Terraform
6 40 (0.57%) logstash
7 36 (0.51%) Hadoop YARN
7 36 (0.51%) Kibana
8 25 (0.35%) Grafana
9 22 (0.31%) Business Desktop Deployment
10 20 (0.28%) ZABBIX
11 19 (0.27%) Mesos
12 18 (0.25%) Graphite
13 17 (0.24%) Oozie
14 15 (0.21%) Salt
15 14 (0.20%) Control-M
15 14 (0.20%) Nagios
16 9 (0.13%) Consul
17 8 (0.11%) HP Quality Center
17 8 (0.11%) Rancher
Vendors
1 613 (8.66%) Oracle
2 437 (6.17%) Microsoft
3 247 (3.49%) SAP
4 138 (1.95%) WSO2
5 108 (1.53%) Google
6 95 (1.34%) IBM
7 79 (1.12%) Sitecore
8 70 (0.99%) Red Hat
9 62 (0.88%) Adobe
10 57 (0.81%) Apple
10 57 (0.81%) hybris
11 47 (0.66%) MuleSoft
11 47 (0.66%) Splunk
12 46 (0.65%) Atlassian
13 45 (0.64%) New Relic
13 45 (0.64%) Perforce
14 41 (0.58%) Cloudera
14 41 (0.58%) Salesforce.com
15 40 (0.57%) Xamarin
16 36 (0.51%) DevExpress