Period
to 24 June 2018

The following table provides summary statistics for permanent job vacancies with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 6 months to 24 June 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK
6 months to
24 Jun 2018
Same period 2017 Same period 2016
Rank 20 19 25
Rank change year-on-year -1 +6 +1
Permanent jobs citing TDD 15,923 16,142 16,166
As % of all permanent IT jobs advertised in the UK 9.16% 9.33% 8.03%
As % of the Processes & Methodologies category 10.10% 10.29% 8.92%
Number of salaries quoted 13,678 14,264 14,529
UK median annual salary £52,500 £50,000 £50,000
Median salary % change year-on-year +5.00% - +4.17%
10th Percentile £33,750 £32,500 £32,500
90th Percentile £81,250 £77,500 £77,500
UK excluding London median annual salary £47,000 £45,000 £44,000
% change year-on-year +4.44% +2.27% +3.53%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for process or methodology skills.

All Process and Methodology Skills
UK
Permanent vacancies with a requirement for process or methodology skills 157,728 156,811 181,236
As % of all permanent IT jobs advertised in the UK 90.74% 90.60% 89.98%
Number of salaries quoted 126,509 127,671 150,738
UK median annual salary £50,000 £48,000 £47,500
Median salary % change year-on-year +4.17% +1.05% +1.06%
10th Percentile £29,000 £28,000 £27,500
90th Percentile £82,500 £78,750 £77,500
UK excluding London median annual salary £45,000 £42,500 £42,500
% change year-on-year +5.88% - +2.41%

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
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD.

Salary trend for TDD in the UK

TDD
Salary Histogram

The salary distribution of IT jobs citing TDD over the 6 months to 24 June 2018.

Salary histogram for TDD in the UK

TDD
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the UK over the 6 months to 24 June 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England 0 14,923 £52,500 - 2,145
UK excluding London -1 8,784 £47,000 +4.44% 1,209
London -3 6,929 £65,000 +4.00% 1,042
South East -1 2,731 £47,500 - 334
North of England +2 2,269 £45,000 +5.88% 374
North West +2 1,267 £45,000 +5.88% 222
South West +2 1,096 £47,500 +7.95% 119
East of England +3 1,033 £50,000 +10.27% 125
Midlands -3 866 £45,000 +5.88% 150
Yorkshire 0 842 £45,000 +5.88% 126
Scotland -1 583 £50,000 +11.11% 68
West Midlands -11 486 £45,000 +5.88% 96
East Midlands -6 380 £42,500 -5.56% 54
Wales +9 180 £42,500 +2.41% 30
North East -6 161 £45,000 +12.50% 26
Northern Ireland +19 41 £40,000 +6.67% 9

For the 6 months to 24 June 2018, IT 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 permanent job ads with a requirement for TDD.

1 12,516 (78.60%) Agile Software Development
2 7,409 (46.53%) C#
3 7,221 (45.35%) BDD
4 6,760 (42.45%) .NET
5 5,981 (37.56%) JavaScript
6 5,908 (37.10%) Java
7 5,121 (32.16%) MVC
8 4,868 (30.57%) Scrum
9 4,860 (30.52%) SQL Server
10 4,287 (26.92%) ASP.NET
11 4,110 (25.81%) Continuous Integration
12 4,016 (25.22%) AngularJS
13 4,013 (25.20%) SQL
14 3,817 (23.97%) HTML
15 3,722 (23.37%) Git (software)
16 3,630 (22.80%) RESTful
17 3,473 (21.81%) ASP.NET MVC
18 3,448 (21.65%) CSS
19 3,325 (20.88%) Software Engineering
20 3,125 (19.63%) Finance
21 2,976 (18.69%) Test Automation
22 2,930 (18.40%) ASP.NET Web API
23 2,672 (16.78%) Node.js
24 2,629 (16.51%) NoSQL
25 2,609 (16.39%) Amazon AWS
26 2,507 (15.74%) OO
27 2,391 (15.02%) Microservices
28 2,328 (14.62%) Web Application Development
29 2,286 (14.36%) Web Services
30 2,217 (13.92%) WCF

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
1 671 (4.21%) Elasticsearch
2 409 (2.57%) Tomcat
3 402 (2.52%) CMS
4 383 (2.41%) Apache Spark
5 365 (2.29%) Confluence
6 278 (1.75%) JBoss
7 253 (1.59%) Apache
8 183 (1.15%) IIS
9 179 (1.12%) EPiServer
10 148 (0.93%) Umbraco
11 140 (0.88%) SharePoint
12 139 (0.87%) Sitecore CMS
13 134 (0.84%) WebSphere
14 126 (0.79%) Apache Solr
15 125 (0.79%) nginx
16 111 (0.70%) Cloud Foundry
16 111 (0.70%) OpenStack
17 103 (0.65%) WebLogic
18 99 (0.62%) Mule
19 84 (0.53%) NServiceBus
Applications
1 69 (0.43%) Microsoft Excel
2 36 (0.23%) Photoshop
3 18 (0.11%) Microsoft Office
4 17 (0.11%) Chatbot
5 15 (0.094%) Microsoft Project
6 14 (0.088%) Adobe Illustrator
7 13 (0.082%) Spreadsheet
8 12 (0.075%) MS Visio
9 7 (0.044%) Adobe Premiere
9 7 (0.044%) Microsoft PowerPoint
10 5 (0.031%) GIMP
11 2 (0.013%) AutoCAD
11 2 (0.013%) Doxygen
11 2 (0.013%) LibreOffice
11 2 (0.013%) Mingle
11 2 (0.013%) Revit
11 2 (0.013%) S-PLUS
12 1 (0.006%) EngageOne
12 1 (0.006%) Fireworks
12 1 (0.006%) Simulink
Business Applications
1 66 (0.41%) Dynamics CRM
2 45 (0.28%) Payment Gateway
3 41 (0.26%) Eloqua
4 37 (0.23%) Magento
5 29 (0.18%) Distributed Ledger
6 28 (0.18%) thinkFolio
7 24 (0.15%) Eagle PACE
7 24 (0.15%) Front Arena
8 20 (0.13%) Markit EDM
9 19 (0.12%) Dynamics NAV
10 11 (0.069%) Bloomberg AIM
11 10 (0.063%) Salesforce.com CRM
11 10 (0.063%) SAP Hybris
12 8 (0.050%) Dynamics AX
12 8 (0.050%) Infor M3
13 6 (0.038%) Oracle Retail
14 4 (0.025%) LatentZero
14 4 (0.025%) SAP FI
14 4 (0.025%) SAP MM
14 4 (0.025%) SAP SD
Cloud Services
1 2,609 (16.39%) Amazon AWS
2 2,053 (12.89%) Microsoft Azure
3 508 (3.19%) GitHub
4 407 (2.56%) SaaS
5 295 (1.85%) npm
6 287 (1.80%) Serverless
7 265 (1.66%) Google Cloud Platform
8 212 (1.33%) PaaS
9 168 (1.06%) Cloud Computing
10 158 (0.99%) Amazon EC2
11 150 (0.94%) IaaS
12 124 (0.78%) Slack
13 119 (0.75%) AWS Lambda
14 104 (0.65%) OpenShift
15 98 (0.62%) Amazon S3
16 89 (0.56%) Google Play
17 86 (0.54%) NuGet
18 63 (0.40%) Office 365
19 61 (0.38%) AWS CloudFormation
20 60 (0.38%) Amazon SQS
Communications & Networking
1 479 (3.01%) Internet
2 344 (2.16%) HTTP
3 98 (0.62%) Hyperconnected
4 89 (0.56%) Wireless
5 79 (0.50%) Broadband
6 52 (0.33%) SSL
7 47 (0.30%) AMQP
8 45 (0.28%) TCP/IP
9 32 (0.20%) DNS
9 32 (0.20%) SMS
10 30 (0.19%) IPv4
11 29 (0.18%) IPv6
12 27 (0.17%) VPN
13 21 (0.13%) Intranet
14 15 (0.094%) VLAN
15 14 (0.088%) Skype
16 13 (0.082%) FIX Connectivity
17 12 (0.075%) SSH
17 12 (0.075%) Value-Added Service
18 10 (0.063%) SMTP
Database & Business Intelligence
1 4,860 (30.52%) SQL Server
2 2,629 (16.51%) NoSQL
3 1,917 (12.04%) SQL Server 2016
4 1,106 (6.95%) MongoDB
5 969 (6.09%) MySQL
6 909 (5.71%) Big Data
7 791 (4.97%) Relational Database
8 689 (4.33%) PostgreSQL
9 436 (2.74%) Hadoop
10 411 (2.58%) SQL Server 2014
11 359 (2.25%) Apache Cassandra
12 342 (2.15%) Redis
13 253 (1.59%) Blockchain
14 245 (1.54%) RDBMS
15 194 (1.22%) Amazon DynamoDB
16 167 (1.05%) Neo4j
17 157 (0.99%) Couchbase
18 154 (0.97%) SQL Server Integration Services
19 151 (0.95%) SQL Server 2012
20 138 (0.87%) Data Warehouse
Development Applications
1 3,722 (23.37%) Git (software)
2 1,625 (10.21%) Jenkins
3 1,497 (9.40%) Selenium
4 1,161 (7.29%) JIRA
5 968 (6.08%) Cucumber
6 899 (5.65%) Maven
7 882 (5.54%) NUnit
8 776 (4.87%) JUnit
9 763 (4.79%) Team Foundation Server
10 748 (4.70%) Visual Studio
11 677 (4.25%) TeamCity
12 639 (4.01%) Subversion
13 446 (2.80%) Gradle
14 412 (2.59%) WebDriver
15 397 (2.49%) gulp
16 374 (2.35%) SpecFlow
17 363 (2.28%) Atlassian Bamboo
18 362 (2.27%) webpack
19 352 (2.21%) Rhino Mocks
20 339 (2.13%) Octopus Deploy
General
1 3,125 (19.63%) Finance
2 985 (6.19%) Banking
3 967 (6.07%) Games
4 907 (5.70%) Retail
5 644 (4.04%) Marketing
6 549 (3.45%) Advertising
7 380 (2.39%) Telecoms
8 361 (2.27%) Investment Banking
9 289 (1.81%) Financial Institution
10 234 (1.47%) Electronics
11 198 (1.24%) Manufacturing
12 160 (1.00%) Front Office
13 148 (0.93%) Law
14 139 (0.87%) Music Industry
15 136 (0.85%) Legal
16 126 (0.79%) Publishing
17 105 (0.66%) Back Office
18 68 (0.43%) Automotive
19 34 (0.21%) Pharmaceutical
20 31 (0.19%) Military
Job Titles
1 11,241 (70.60%) Developer
2 4,292 (26.95%) .NET Developer
3 2,657 (16.69%) C# Developer
4 2,644 (16.60%) Java Developer
5 2,064 (12.96%) Senior Developer
6 1,802 (11.32%) C# .NET Developer
7 1,441 (9.05%) Software Engineer
8 1,182 (7.42%) Software Developer
9 908 (5.70%) ASP.NET Developer
10 872 (5.48%) C# ASP.NET Developer
11 745 (4.68%) Senior Java Developer
12 737 (4.63%) ASP.NET MVC Developer
13 703 (4.41%) JavaScript Developer
14 681 (4.28%) Java Engineer
15 607 (3.81%) Lead Developer
16 578 (3.63%) Front End Developer (Client-Side Developer)
17 540 (3.39%) Agile Developer
18 496 (3.11%) Full Stack Developer
19 460 (2.89%) Senior .NET Developer
20 410 (2.57%) .NET Software Developer
Libraries, Frameworks & Software Standards
1 6,760 (42.45%) .NET
2 4,287 (26.92%) ASP.NET
3 4,016 (25.22%) AngularJS
4 3,817 (23.97%) HTML
5 3,630 (22.80%) RESTful
6 3,473 (21.81%) ASP.NET MVC
7 3,448 (21.65%) CSS
8 2,930 (18.40%) ASP.NET Web API
9 2,672 (16.78%) Node.js
10 2,286 (14.36%) Web Services
11 2,217 (13.92%) WCF
12 2,192 (13.77%) Spring
13 1,991 (12.50%) .NET Framework
14 1,925 (12.09%) ASP.NET MVC 5
15 1,912 (12.01%) React
16 1,788 (11.23%) REST
17 1,785 (11.21%) HTML5
18 1,433 (9.00%) Entity Framework
19 1,427 (8.96%) jQuery
20 1,122 (7.05%) Twitter Bootstrap
Miscellaneous
1 1,819 (11.42%) Greenfield Project
2 1,162 (7.30%) Computer Science
3 1,142 (7.17%) User Experience
4 869 (5.46%) Fintech
5 786 (4.94%) Mobile App
6 782 (4.91%) Enterprise Software
7 700 (4.40%) Analytical Skills
8 341 (2.14%) Self-Motivation
9 322 (2.02%) Algorithms
10 236 (1.48%) Data Structures
11 183 (1.15%) Cyberthreat
12 149 (0.94%) Hedge funds
13 147 (0.92%) Equities
13 147 (0.92%) Social Network
14 140 (0.88%) Cloud Native
15 131 (0.82%) Tandem
16 129 (0.81%) Linux Command Line
17 122 (0.77%) Fixed Income
18 120 (0.75%) Virtual Team
19 113 (0.71%) Foreign Exchange (FX)
Operating Systems
1 1,658 (10.41%) Linux
2 1,106 (6.95%) Windows
3 668 (4.20%) Android
4 510 (3.20%) Apple iOS
5 431 (2.71%) Unix
6 73 (0.46%) Windows Server
7 51 (0.32%) Mac OS
8 44 (0.28%) Ubuntu
9 35 (0.22%) CentOS
10 32 (0.20%) Embedded Linux
11 31 (0.19%) Nucleus RTOS
12 24 (0.15%) Red Hat Enterprise Linux
13 23 (0.14%) Windows Phone
14 18 (0.11%) FreeBSD
14 18 (0.11%) Mac OS X
14 18 (0.11%) Solaris
15 16 (0.10%) Amazon Linux
15 16 (0.10%) VMS
16 15 (0.094%) openSUSE
17 11 (0.069%) Debian
Processes & Methodologies
1 12,516 (78.60%) Agile Software Development
2 7,221 (45.35%) BDD
3 5,121 (32.16%) MVC
4 4,868 (30.57%) Scrum
5 4,110 (25.81%) Continuous Integration
6 3,325 (20.88%) Software Engineering
7 2,976 (18.69%) Test Automation
8 2,507 (15.74%) OO
9 2,391 (15.02%) Microservices
10 2,328 (14.62%) Web Application Development
11 2,163 (13.58%) DevOps
12 2,046 (12.85%) Kanban
13 1,720 (10.80%) Problem-Solving
14 1,575 (9.89%) Unit Testing
15 1,346 (8.45%) SDLC
16 1,276 (8.01%) SOLID
17 1,273 (7.99%) Mentoring
18 1,208 (7.59%) Continuous Delivery
19 1,179 (7.40%) Pair Programming
20 1,160 (7.29%) Dependency Injection
Programming Languages
1 7,409 (46.53%) C#
2 5,981 (37.56%) JavaScript
3 5,908 (37.10%) Java
4 4,013 (25.20%) SQL
5 2,062 (12.95%) Ruby
6 1,870 (11.74%) Python
7 1,361 (8.55%) Java 8
8 993 (6.24%) C++
9 956 (6.00%) Scala
10 950 (5.97%) PHP
11 651 (4.09%) TypeScript
12 626 (3.93%) T-SQL
13 473 (2.97%) C
14 381 (2.39%) ES6
15 358 (2.25%) VB.NET
16 286 (1.80%) Go
17 238 (1.49%) Groovy
18 236 (1.48%) PowerShell
19 218 (1.37%) Bash Shell
20 191 (1.20%) Objective-C
Qualifications
1 1,667 (10.47%) Degree
2 578 (3.63%) Computer Science Degree
3 376 (2.36%) Security Cleared
4 180 (1.13%) SC Cleared
5 125 (0.79%) ISEB
6 123 (0.77%) DV Cleared
7 111 (0.70%) ISTQB
8 108 (0.68%) Microsoft Certification
9 85 (0.53%) Master's Degree
10 55 (0.35%) SAFe Agilist
11 44 (0.28%) ISTQB Foundation Certification
12 42 (0.26%) Numerate Degree
13 40 (0.25%) MCPD
14 39 (0.24%) AWS Certification
15 27 (0.17%) PhD
16 19 (0.12%) PMI Certification
16 19 (0.12%) Sun Certification
17 14 (0.088%) MCTS
18 12 (0.075%) HND
19 11 (0.069%) PMP
Quality Assurance & Compliance
1 1,245 (7.82%) QA
2 79 (0.50%) GCP
3 77 (0.48%) GDPR
4 62 (0.39%) PCI DSS
5 30 (0.19%) WCAG
6 25 (0.16%) PMO
7 24 (0.15%) PSD2
8 21 (0.13%) SLA
9 17 (0.11%) Data Quality
10 13 (0.082%) ISO/IEC 27001
11 8 (0.050%) GAMP
12 7 (0.044%) Web Application Security Consortium
13 5 (0.031%) SEPA
14 3 (0.019%) COBIT
14 3 (0.019%) Disclosure Scotland
14 3 (0.019%) EMIR
14 3 (0.019%) ISO 9001
14 3 (0.019%) MiFID
14 3 (0.019%) MISRA
14 3 (0.019%) PA-DSS
System Software
1 1,505 (9.45%) Docker
2 108 (0.68%) VMware Infrastructure
3 60 (0.38%) VirtualBox
4 57 (0.36%) Hyper-V
5 52 (0.33%) Active Directory
6 47 (0.30%) Xen
7 40 (0.25%) HDFS
8 37 (0.23%) Virtual Machines
9 26 (0.16%) Apache Flume
10 23 (0.14%) Apache ZooKeeper
11 17 (0.11%) Firmware
12 14 (0.088%) vSphere
13 8 (0.050%) KVM
13 8 (0.050%) VMware ESXi
14 7 (0.044%) iptables
14 7 (0.044%) VMware Server
15 3 (0.019%) LXC
15 3 (0.019%) Oracle RAC
15 3 (0.019%) Varnish
16 1 (0.006%) FreeRADIUS
Systems Management
1 532 (3.34%) Ansible
2 432 (2.71%) Puppet
3 409 (2.57%) Kubernetes
4 400 (2.51%) Opscode Chef
5 224 (1.41%) Terraform
6 188 (1.18%) Kibana
7 69 (0.43%) Business Desktop Deployment
8 63 (0.40%) HockeyApp
8 63 (0.40%) WSUS
9 47 (0.30%) Salt
10 35 (0.22%) Mesos
11 33 (0.21%) HP Quality Center
12 29 (0.18%) Cobbler
13 22 (0.14%) logstash
14 21 (0.13%) Icinga
15 20 (0.13%) Marathon
15 20 (0.13%) Packer
16 19 (0.12%) Single Sign-On
17 18 (0.11%) HP ALM
18 17 (0.11%) Grafana
Vendors
1 1,890 (11.87%) Microsoft
2 831 (5.22%) Oracle
3 733 (4.60%) Google
4 380 (2.39%) Facebook
5 223 (1.40%) Xamarin
6 179 (1.12%) Atlassian
7 171 (1.07%) SAP
8 164 (1.03%) Sitecore
9 155 (0.97%) VMware
10 149 (0.94%) Apple
11 141 (0.89%) Twitter
12 138 (0.87%) Sybase
13 114 (0.72%) Capita
14 113 (0.71%) WorldPay
15 111 (0.70%) IBM
16 105 (0.66%) Salesforce.com
17 99 (0.62%) Splunk
18 84 (0.53%) Tableau
19 73 (0.46%) Zend
20 72 (0.45%) AppDynamics