Period
to 15 October 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 15 October 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK
6 months to
15 Oct 2018
Same period 2017 Same period 2016
Rank 23 20 23
Rank change year-on-year -3 +3 +2
Permanent jobs citing TDD 13,871 15,607 15,607
As % of all permanent IT jobs advertised in the UK 8.43% 8.98% 8.20%
As % of the Processes & Methodologies category 9.26% 9.80% 9.02%
Number of salaries quoted 11,680 13,254 14,081
UK median annual salary £55,000 £52,500 £51,500
Median salary % change year-on-year +4.76% +1.94% +5.10%
10th Percentile £33,750 £33,000 £32,500
90th Percentile £85,000 £80,000 £78,750
UK excluding London median annual salary £47,500 £45,000 £45,000
% change year-on-year +5.56% - +5.88%

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 149,810 159,174 173,018
As % of all permanent IT jobs advertised in the UK 91.02% 91.57% 90.85%
Number of salaries quoted 119,232 125,620 144,140
UK median annual salary £50,000 £50,000 £48,000
Median salary % change year-on-year - +4.17% +1.05%
10th Percentile £29,000 £28,250 £27,500
90th Percentile £83,750 £80,000 £78,750
UK excluding London median annual salary £45,000 £42,500 £42,500
% change year-on-year +5.88% - -

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 15 October 2018.

Salary histogram for TDD in the UK

TDD
Top 17 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 15 October 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 -2 13,009 £55,000 +4.76% 2,307
UK excluding London -1 7,238 £47,500 +5.56% 1,313
London -2 6,415 £67,500 +8.00% 1,102
South East -5 2,225 £50,000 +5.26% 324
North of England 0 1,961 £46,250 +2.78% 388
North West -2 1,114 £50,000 +11.11% 206
South West -1 869 £47,500 +5.56% 163
East of England +3 798 £50,000 +0.91% 142
Midlands 0 745 £45,000 +5.88% 188
Yorkshire +3 716 £45,000 - 143
Scotland -10 473 £50,000 +5.26% 69
West Midlands -4 453 £45,000 +12.50% 103
East Midlands -10 292 £42,500 -5.56% 85
Wales +24 152 £45,000 +12.50% 30
North East +5 133 £45,000 +12.50% 39
Northern Ireland +18 46 £40,000 +11.11% 9
Channel Islands - 1 £42,500 -

For the 6 months to 15 October 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 10,532 (75.93%) Agile Software Development
2 6,136 (44.24%) C#
3 5,856 (42.22%) BDD
4 5,543 (39.96%) .NET
5 5,482 (39.52%) JavaScript
6 5,152 (37.14%) Java
7 4,145 (29.88%) Scrum
8 3,924 (28.29%) MVC
9 3,841 (27.69%) Continuous Integration
10 3,838 (27.67%) SQL
11 3,599 (25.95%) SQL Server
12 3,574 (25.77%) AngularJS
13 3,294 (23.75%) HTML
14 3,199 (23.06%) ASP.NET
15 3,135 (22.60%) Git (software)
16 2,990 (21.56%) CSS
17 2,848 (20.53%) Software Engineering
18 2,773 (19.99%) Finance
19 2,702 (19.48%) RESTful
20 2,460 (17.73%) ASP.NET MVC
21 2,429 (17.51%) Microservices
22 2,412 (17.39%) Test Automation
23 2,352 (16.96%) Amazon AWS
24 2,255 (16.26%) ASP.NET Web API
25 2,091 (15.07%) Microsoft Azure
26 2,087 (15.05%) DevOps
27 2,086 (15.04%) OO
28 2,034 (14.66%) Node.js
29 2,032 (14.65%) Web Services
30 1,993 (14.37%) Spring

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
1 499 (3.60%) Elasticsearch
2 386 (2.78%) CMS
3 378 (2.73%) Confluence
4 317 (2.29%) Apache Spark
5 257 (1.85%) Tomcat
6 240 (1.73%) Apache
7 195 (1.41%) JBoss
8 189 (1.36%) EPiServer
9 171 (1.23%) IIS
10 142 (1.02%) WebSphere
11 127 (0.92%) SharePoint
12 111 (0.80%) Sitecore CMS
13 104 (0.75%) Umbraco
14 98 (0.71%) nginx
15 90 (0.65%) NServiceBus
16 86 (0.62%) Cloud Foundry
17 79 (0.57%) OpenStack
18 76 (0.55%) WordPress
19 63 (0.45%) WebLogic
20 62 (0.45%) MQSeries
Applications
1 61 (0.44%) Microsoft Excel
2 26 (0.19%) Microsoft Office
3 23 (0.17%) Microsoft Project
4 19 (0.14%) Spreadsheet
5 17 (0.12%) Photoshop
6 16 (0.12%) MS Visio
7 15 (0.11%) Microsoft PowerPoint
8 12 (0.087%) Chatbot
9 6 (0.043%) Maya
10 5 (0.036%) Mingle
10 5 (0.036%) Snapchat
11 4 (0.029%) Adobe Illustrator
11 4 (0.029%) Doxygen
12 3 (0.022%) Fireworks
12 3 (0.022%) LibreOffice
12 3 (0.022%) Open Workbench
13 2 (0.014%) Adobe Creative Suite
13 2 (0.014%) GIMP
14 1 (0.007%) InVision
14 1 (0.007%) OmniGraffle
Business Applications
1 77 (0.56%) Dynamics CRM
2 60 (0.43%) Payment Gateway
3 45 (0.32%) Eloqua
4 36 (0.26%) Magento
5 26 (0.19%) Markit EDM
6 23 (0.17%) thinkFolio
7 19 (0.14%) Dynamics NAV
8 18 (0.13%) Dynamics AX
9 16 (0.12%) Eagle PACE
9 16 (0.12%) Front Arena
10 12 (0.087%) Bloomberg AIM
11 9 (0.065%) SAP FI
11 9 (0.065%) SAP Hybris
12 8 (0.058%) Distributed Ledger
12 8 (0.058%) FastStats
13 7 (0.050%) BusinessWorks
14 6 (0.043%) Oracle EBS
14 6 (0.043%) Oracle Retail
15 5 (0.036%) Adobe Campaign
15 5 (0.036%) SAP QM
Cloud Services
1 2,352 (16.96%) Amazon AWS
2 2,091 (15.07%) Microsoft Azure
3 382 (2.75%) GitHub
4 375 (2.70%) SaaS
5 343 (2.47%) Serverless
6 330 (2.38%) Google Cloud Platform
7 307 (2.21%) npm
8 157 (1.13%) PaaS
9 147 (1.06%) Cloud Computing
10 142 (1.02%) Amazon EC2
11 130 (0.94%) AWS Lambda
12 121 (0.87%) IaaS
13 95 (0.68%) OpenShift
14 75 (0.54%) Amazon S3
15 72 (0.52%) Slack
16 71 (0.51%) Office 365
17 55 (0.40%) NuGet
18 54 (0.39%) Amazon SQS
19 51 (0.37%) Yarn
20 45 (0.32%) AWS CloudFormation
Communications & Networking
1 479 (3.45%) Internet
2 274 (1.98%) HTTP
3 75 (0.54%) Hyperconnected
4 64 (0.46%) Broadband
5 59 (0.43%) SSL
6 47 (0.34%) TCP/IP
7 36 (0.26%) AMQP
8 28 (0.20%) Wireless
9 27 (0.19%) VLAN
9 27 (0.19%) Wi-Fi
10 22 (0.16%) DNS
11 21 (0.15%) SMS
12 19 (0.14%) IPv4
12 19 (0.14%) IPv6
13 18 (0.13%) Bluetooth
14 15 (0.11%) Intranet
15 13 (0.094%) Firewall
16 12 (0.087%) OpenLDAP
16 12 (0.087%) Skype
17 11 (0.079%) Network Security
Database & Business Intelligence
1 3,599 (25.95%) SQL Server
2 1,906 (13.74%) NoSQL
3 1,394 (10.05%) SQL Server 2016
4 886 (6.39%) MongoDB
5 810 (5.84%) MySQL
6 776 (5.59%) Big Data
7 677 (4.88%) Relational Database
8 608 (4.38%) PostgreSQL
9 309 (2.23%) Apache Cassandra
10 297 (2.14%) Hadoop
11 294 (2.12%) Redis
12 229 (1.65%) RDBMS
13 203 (1.46%) Blockchain
14 172 (1.24%) SQL Server Integration Services
15 165 (1.19%) Amazon DynamoDB
16 145 (1.05%) SQL Server 2012
17 125 (0.90%) Data Warehouse
18 116 (0.84%) Oracle Database
18 116 (0.84%) SQL Server Reporting Services
19 104 (0.75%) Couchbase
Development Applications
1 3,135 (22.60%) Git (software)
2 1,536 (11.07%) Jenkins
3 1,276 (9.20%) Selenium
4 1,044 (7.53%) JIRA
5 820 (5.91%) Cucumber
6 819 (5.90%) Visual Studio
7 786 (5.67%) Maven
8 719 (5.18%) TeamCity
9 685 (4.94%) Team Foundation Server
10 684 (4.93%) JUnit
11 560 (4.04%) NUnit
12 497 (3.58%) Subversion
13 394 (2.84%) gulp
14 370 (2.67%) WebDriver
15 369 (2.66%) SpecFlow
16 354 (2.55%) Octopus Deploy
17 342 (2.47%) webpack
18 330 (2.38%) Gradle
19 278 (2.00%) Mocha
20 257 (1.85%) Jasmine
General
1 2,773 (19.99%) Finance
2 897 (6.47%) Banking
3 843 (6.08%) Games
4 739 (5.33%) Retail
5 502 (3.62%) Marketing
6 352 (2.54%) Advertising
7 316 (2.28%) Telecoms
8 315 (2.27%) Investment Banking
9 255 (1.84%) Financial Institution
10 211 (1.52%) Electronics
11 183 (1.32%) Front Office
12 182 (1.31%) Law
13 179 (1.29%) Manufacturing
14 119 (0.86%) Publishing
15 94 (0.68%) Back Office
16 92 (0.66%) Automotive
17 78 (0.56%) Legal
18 51 (0.37%) Pharmaceutical
19 49 (0.35%) Music Industry
20 44 (0.32%) Multimedia
Job Titles
1 9,695 (69.89%) Developer
2 3,361 (24.23%) .NET Developer
3 2,418 (17.43%) Java Developer
4 2,417 (17.42%) C# Developer
5 2,038 (14.69%) Senior Developer
6 1,700 (12.26%) C# .NET Developer
7 1,304 (9.40%) Software Engineer
8 1,079 (7.78%) Software Developer
9 766 (5.52%) ASP.NET Developer
10 715 (5.15%) C# ASP.NET Developer
11 656 (4.73%) Lead Developer
12 653 (4.71%) Senior Java Developer
13 621 (4.48%) JavaScript Developer
14 560 (4.04%) Front End Developer (Client-Side Developer)
15 549 (3.96%) ASP.NET MVC Developer
16 519 (3.74%) Senior .NET Developer
17 480 (3.46%) Java Engineer
18 468 (3.37%) Agile Developer
19 453 (3.27%) Full Stack Developer
20 433 (3.12%) .NET Software Developer
Libraries, Frameworks & Software Standards
1 5,543 (39.96%) .NET
2 3,574 (25.77%) AngularJS
3 3,294 (23.75%) HTML
4 3,199 (23.06%) ASP.NET
5 2,990 (21.56%) CSS
6 2,702 (19.48%) RESTful
7 2,460 (17.73%) ASP.NET MVC
8 2,255 (16.26%) ASP.NET Web API
9 2,034 (14.66%) Node.js
10 2,032 (14.65%) Web Services
11 1,993 (14.37%) Spring
12 1,868 (13.47%) React
13 1,809 (13.04%) REST
14 1,586 (11.43%) .NET Framework
15 1,508 (10.87%) HTML5
16 1,407 (10.14%) WCF
17 1,299 (9.36%) jQuery
18 1,040 (7.50%) Entity Framework
19 965 (6.96%) Twitter Bootstrap
20 941 (6.78%) CSS3
Miscellaneous
1 1,630 (11.75%) Greenfield Project
2 1,073 (7.74%) User Experience
3 978 (7.05%) Computer Science
4 772 (5.57%) Fintech
5 647 (4.66%) Analytical Skills
6 643 (4.64%) Enterprise Software
7 562 (4.05%) Mobile App
8 337 (2.43%) Self-Motivation
9 236 (1.70%) Algorithms
10 167 (1.20%) Cyberthreat
11 163 (1.18%) Data Structures
12 139 (1.00%) Hedge funds
13 133 (0.96%) Virtual Team
14 122 (0.88%) Equities
15 113 (0.81%) Derivative
16 109 (0.79%) Cloud Native
17 108 (0.78%) Fixed Income
18 100 (0.72%) Foreign Exchange (FX)
19 99 (0.71%) Tandem
20 95 (0.68%) Social Network
Operating Systems
1 1,191 (8.59%) Linux
2 788 (5.68%) Windows
3 507 (3.66%) Android
4 410 (2.96%) Apple iOS
5 337 (2.43%) Unix
6 60 (0.43%) Windows Server
7 45 (0.32%) CentOS
8 37 (0.27%) Ubuntu
9 33 (0.24%) Mac OS X
10 21 (0.15%) Red Hat Enterprise Linux
11 17 (0.12%) Mac OS
11 17 (0.12%) openSUSE
12 15 (0.11%) Embedded Linux
12 15 (0.11%) Nucleus RTOS
13 13 (0.094%) VMS
14 11 (0.079%) Windows 10
15 10 (0.072%) Solaris
15 10 (0.072%) Windows Phone
16 8 (0.058%) Debian
16 8 (0.058%) FreeBSD
Processes & Methodologies
1 10,532 (75.93%) Agile Software Development
2 5,856 (42.22%) BDD
3 4,145 (29.88%) Scrum
4 3,924 (28.29%) MVC
5 3,841 (27.69%) Continuous Integration
6 2,848 (20.53%) Software Engineering
7 2,429 (17.51%) Microservices
8 2,412 (17.39%) Test Automation
9 2,087 (15.05%) DevOps
10 2,086 (15.04%) OO
11 1,699 (12.25%) Kanban
12 1,607 (11.59%) Problem-Solving
13 1,464 (10.55%) Unit Testing
14 1,448 (10.44%) Web Application Development
15 1,285 (9.26%) Continuous Delivery
16 1,259 (9.08%) SOLID
17 1,172 (8.45%) Mentoring
18 1,153 (8.31%) SDLC
19 1,148 (8.28%) Pair Programming
20 1,072 (7.73%) Web Development
Programming Languages
1 6,136 (44.24%) C#
2 5,482 (39.52%) JavaScript
3 5,152 (37.14%) Java
4 3,838 (27.67%) SQL
5 1,763 (12.71%) Python
6 1,374 (9.91%) Ruby
7 1,329 (9.58%) Java 8
8 845 (6.09%) C++
9 844 (6.08%) Scala
10 805 (5.80%) PHP
11 585 (4.22%) TypeScript
12 521 (3.76%) T-SQL
13 411 (2.96%) ES6
14 350 (2.52%) C
15 290 (2.09%) Go
16 280 (2.02%) PowerShell
17 218 (1.57%) VB.NET
18 187 (1.35%) Bash Shell
19 186 (1.34%) Apple Swift
20 165 (1.19%) F#
Qualifications
1 1,488 (10.73%) Degree
2 499 (3.60%) Computer Science Degree
3 371 (2.67%) Security Cleared
4 213 (1.54%) SC Cleared
5 142 (1.02%) DV Cleared
6 104 (0.75%) ISTQB
7 97 (0.70%) Microsoft Certification
8 79 (0.57%) ISEB
9 69 (0.50%) Master's Degree
10 48 (0.35%) SAFe Agilist
11 37 (0.27%) Numerate Degree
12 25 (0.18%) ISTQB Foundation Certification
13 24 (0.17%) PMI Certification
14 23 (0.17%) AWS Certification
14 23 (0.17%) MCPD
15 15 (0.11%) PhD
16 14 (0.10%) OCPJP
17 11 (0.079%) CISSP
18 9 (0.065%) DBS Check
19 8 (0.058%) PMP
Quality Assurance & Compliance
1 1,084 (7.81%) QA
2 61 (0.44%) GDPR
3 29 (0.21%) Data Quality
4 24 (0.17%) SLA
5 23 (0.17%) WCAG
6 21 (0.15%) PMO
7 17 (0.12%) ISO/IEC 27001
8 16 (0.12%) PCI DSS
9 15 (0.11%) PSD2
10 6 (0.043%) PMBOK
11 5 (0.036%) SEPA
12 4 (0.029%) COBIT
12 4 (0.029%) DICOM
12 4 (0.029%) EMIR
12 4 (0.029%) FATCA
12 4 (0.029%) MiFID
13 3 (0.022%) MISRA
13 3 (0.022%) PA-DSS
14 2 (0.014%) ISO 9001
14 2 (0.014%) Web Application Security Consortium
System Software
1 1,453 (10.48%) Docker
2 75 (0.54%) Active Directory
3 46 (0.33%) HDFS
4 38 (0.27%) VMware Infrastructure
5 33 (0.24%) Virtual Machines
6 28 (0.20%) VirtualBox
7 21 (0.15%) Apache ZooKeeper
8 20 (0.14%) Hyper-V
9 19 (0.14%) vSphere
10 7 (0.050%) KVM
10 7 (0.050%) LXC
10 7 (0.050%) Varnish
11 5 (0.036%) Firmware
11 5 (0.036%) Xen
12 4 (0.029%) Apache Flume
13 3 (0.022%) Oracle RAC
13 3 (0.022%) zsh
14 2 (0.014%) FreeRADIUS
14 2 (0.014%) iptables
14 2 (0.014%) VMware ESXi
Systems Management
1 523 (3.77%) Kubernetes
2 459 (3.31%) Ansible
3 298 (2.15%) Opscode Chef
4 284 (2.05%) Puppet
5 246 (1.77%) Terraform
6 134 (0.97%) Kibana
7 60 (0.43%) Salt
8 49 (0.35%) HP Quality Center
9 37 (0.27%) Mesos
10 33 (0.24%) Grafana
11 23 (0.17%) HP ALM
12 22 (0.16%) Rancher
13 21 (0.15%) Prometheus
14 20 (0.14%) Hadoop YARN
15 19 (0.14%) ZABBIX
16 17 (0.12%) Business Desktop Deployment
16 17 (0.12%) Packer
17 15 (0.11%) Icinga
18 14 (0.10%) HockeyApp
19 13 (0.094%) WSUS
Vendors
1 1,752 (12.63%) Microsoft
2 790 (5.70%) Oracle
3 652 (4.70%) Google
4 246 (1.77%) Facebook
5 245 (1.77%) Xamarin
6 218 (1.57%) SAP
7 166 (1.20%) Apple
8 150 (1.08%) Sitecore
9 143 (1.03%) Atlassian
10 137 (0.99%) Sybase
11 104 (0.75%) Twitter
12 85 (0.61%) IBM
13 84 (0.61%) Splunk
14 81 (0.58%) Tableau
15 78 (0.56%) Zend
16 70 (0.50%) Yahoo!
17 66 (0.48%) Adobe
17 66 (0.48%) Sony
18 64 (0.46%) VMware
19 59 (0.43%) New Relic