Period
to 19 June 2019

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 19 June 2019 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK
6 months to
19 Jun 2019
Same period 2018 Same period 2017
Rank 31 20 19
Rank change year-on-year -11 -1 +6
Permanent jobs citing TDD 9,840 15,787 16,123
As % of all permanent IT jobs advertised in the UK 6.85% 9.17% 9.36%
As % of the Processes & Methodologies category 7.44% 9.97% 10.20%
Number of salaries quoted 8,044 13,612 14,264
UK median annual salary £55,000 £52,500 £50,000
Median salary % change year-on-year +4.76% +5.00% -
10th Percentile £34,378 £33,750 £32,500
90th Percentile £86,250 £81,250 £77,500
UK excluding London median annual salary £50,000 £47,000 £45,000
% change year-on-year +6.38% +4.44% +2.27%

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 132,251 158,378 158,006
As % of all permanent IT jobs advertised in the UK 92.03% 92.00% 91.75%
Number of salaries quoted 103,737 127,468 128,710
UK median annual salary £52,500 £50,000 £47,500
Median salary % change year-on-year +5.00% +5.26% -
10th Percentile £30,000 £29,000 £27,750
90th Percentile £86,250 £82,500 £78,750
UK excluding London median annual salary £45,000 £45,000 £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 19 June 2019.

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 19 June 2019. 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 -9 9,292 £55,000 +4.76% 737
UK excluding London -10 5,089 £50,000 +6.38% 450
London -7 4,579 £65,000 +1.17% 331
South East -12 1,720 £51,000 +7.37% 107
North of England -17 1,298 £47,500 +5.56% 134
North West -15 693 £52,500 +16.67% 82
South West -19 636 £45,000 -5.26% 49
Midlands -23 553 £45,000 - 60
Yorkshire -17 534 £45,000 - 41
East of England -12 456 £50,000 - 59
Scotland -21 338 £50,000 - 24
West Midlands -10 333 £45,000 - 43
East Midlands -9 218 £45,000 +5.88% 17
Wales -31 72 £42,500 - 12
North East -15 68 £47,000 +4.44% 11
Northern Ireland -35 22 £50,000 +25.00% 9

For the 6 months to 19 June 2019, 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 7,362 (74.82%) Agile Software Development
2 4,178 (42.46%) C#
3 4,129 (41.96%) JavaScript
4 3,978 (40.43%) BDD
5 3,672 (37.32%) Java
6 3,641 (37.00%) .NET
7 2,745 (27.90%) Scrum
8 2,628 (26.71%) SQL
9 2,588 (26.30%) Continuous Integration
10 2,442 (24.82%) MVC
11 2,437 (24.77%) Software Engineering
12 2,367 (24.05%) AngularJS
13 2,326 (23.64%) Git (software)
14 2,290 (23.27%) HTML
15 2,099 (21.33%) ASP.NET
16 2,093 (21.27%) Test Automation
17 2,088 (21.22%) SQL Server
18 2,072 (21.06%) CSS
19 1,883 (19.14%) DevOps
20 1,861 (18.91%) Amazon AWS
21 1,790 (18.19%) Finance
22 1,754 (17.83%) Microservices
23 1,694 (17.22%) React
24 1,652 (16.79%) Microsoft Azure
25 1,607 (16.33%) RESTful
26 1,502 (15.26%) Node.js
27 1,466 (14.90%) Spring
28 1,455 (14.79%) Docker
29 1,430 (14.53%) Microsoft
30 1,397 (14.20%) ASP.NET MVC

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
1 308 (3.13%) Confluence
2 293 (2.98%) Elasticsearch
3 187 (1.90%) Apache Spark
4 167 (1.70%) Apache
5 156 (1.59%) CMS
6 146 (1.48%) IIS
7 126 (1.28%) Tomcat
8 93 (0.95%) Umbraco
9 86 (0.87%) JBoss
10 80 (0.81%) Cloud Foundry
11 74 (0.75%) nginx
12 67 (0.68%) Sitecore CMS
13 57 (0.58%) WordPress
14 54 (0.55%) EPiServer
15 50 (0.51%) Apache Solr
16 44 (0.45%) SharePoint
17 41 (0.42%) NServiceBus
17 41 (0.42%) Sitefinity
18 40 (0.41%) WebLogic
19 34 (0.35%) WebSphere
Applications
1 25 (0.25%) Chatbot
2 22 (0.22%) Microsoft Office
3 15 (0.15%) Photoshop
4 11 (0.11%) Microsoft Project
5 8 (0.081%) Microsoft Excel
5 8 (0.081%) Zeplin
6 7 (0.071%) Adobe XD
6 7 (0.071%) InVision
6 7 (0.071%) MS Visio
7 4 (0.041%) Sketch
7 4 (0.041%) S-PLUS
8 3 (0.030%) Adobe Illustrator
9 2 (0.020%) Adobe Premiere
9 2 (0.020%) GIMP
10 1 (0.010%) EngageOne
10 1 (0.010%) Fireworks
10 1 (0.010%) HipChat
Business Applications
1 102 (1.04%) Payment Gateway
2 35 (0.36%) Magento
3 34 (0.35%) Dynamics CRM
4 23 (0.23%) SAP Hybris
5 15 (0.15%) Distributed Ledger
6 10 (0.10%) Oracle BPM
7 9 (0.091%) Dynamics NAV
8 8 (0.081%) Fredhopper
8 8 (0.081%) nopCommerce
9 7 (0.071%) WebTrends
10 6 (0.061%) FastStats
11 5 (0.051%) Remedy ITSM
12 4 (0.041%) R3 Corda
13 3 (0.030%) NetSuite
13 3 (0.030%) Oracle Applications
14 2 (0.020%) Maximo
15 1 (0.010%) Endur
15 1 (0.010%) LatentZero
15 1 (0.010%) LongView
15 1 (0.010%) Oracle CRM
Cloud Services
1 1,861 (18.91%) Amazon AWS
2 1,652 (16.79%) Microsoft Azure
3 383 (3.89%) SaaS
4 381 (3.87%) Google Cloud Platform
5 361 (3.67%) GitHub
6 307 (3.12%) Serverless
7 177 (1.80%) PaaS
8 140 (1.42%) AWS Lambda
9 136 (1.38%) npm
10 131 (1.33%) Amazon EC2
11 125 (1.27%) Office 365
12 117 (1.19%) Cloud Computing
13 109 (1.11%) OpenShift
14 103 (1.05%) G Suite
15 98 (1.00%) IaaS
16 93 (0.95%) Amazon S3
17 72 (0.73%) AWS CloudFormation
18 56 (0.57%) Amazon SQS
19 48 (0.49%) Power Platform
20 46 (0.47%) Heroku
Communications & Networking
1 253 (2.57%) Internet
2 208 (2.11%) HTTP
3 74 (0.75%) TCP/IP
4 42 (0.43%) Broadband
5 40 (0.41%) Bluetooth
6 36 (0.37%) SSL
7 34 (0.35%) SSH
8 27 (0.27%) HTTPS
9 23 (0.23%) Wireless
10 22 (0.22%) Wi-Fi
11 20 (0.20%) Network Security
12 18 (0.18%) AMQP
12 18 (0.18%) DNS
12 18 (0.18%) Skype
13 17 (0.17%) Firewall
13 17 (0.17%) MQTT
13 17 (0.17%) Reverse Proxy
14 16 (0.16%) RIP
15 13 (0.13%) Intranet
16 12 (0.12%) SNMP
Database & Business Intelligence
1 2,088 (21.22%) SQL Server
2 1,150 (11.69%) NoSQL
3 696 (7.07%) MySQL
4 622 (6.32%) MongoDB
5 587 (5.97%) SQL Server 2016
6 477 (4.85%) Relational Database
7 451 (4.58%) PostgreSQL
8 417 (4.24%) Big Data
9 268 (2.72%) Hadoop
10 267 (2.71%) Redis
11 222 (2.26%) Apache Cassandra
12 129 (1.31%) Neo4j
13 125 (1.27%) Amazon DynamoDB
14 113 (1.15%) RDBMS
15 112 (1.14%) SQL Server Reporting Services
16 97 (0.99%) Amazon RDS
17 93 (0.95%) Blockchain
17 93 (0.95%) SQL Server Integration Services
18 81 (0.82%) Data Warehouse
19 60 (0.61%) SQL Server 2012
Development Applications
1 2,326 (23.64%) Git (software)
2 1,224 (12.44%) Jenkins
3 1,099 (11.17%) Selenium
4 969 (9.85%) JIRA
5 712 (7.24%) Cucumber
6 578 (5.87%) Maven
7 526 (5.35%) TeamCity
8 481 (4.89%) JUnit
9 446 (4.53%) Visual Studio
10 380 (3.86%) Team Foundation Server
11 343 (3.49%) NUnit
12 329 (3.34%) SoapUI
13 324 (3.29%) WebDriver
14 273 (2.77%) Subversion
15 270 (2.74%) SpecFlow
16 241 (2.45%) Gradle
17 224 (2.28%) Atlassian Bamboo
18 215 (2.18%) JMeter
19 214 (2.17%) Jasmine
20 209 (2.12%) Octopus Deploy
General
1 1,790 (18.19%) Finance
2 689 (7.00%) Retail
3 599 (6.09%) Banking
4 429 (4.36%) Games
5 300 (3.05%) Marketing
6 232 (2.36%) Telecoms
7 155 (1.58%) Manufacturing
8 113 (1.15%) Electronics
9 103 (1.05%) Advertising
10 95 (0.97%) Financial Institution
11 83 (0.84%) Investment Banking
12 81 (0.82%) Law
13 68 (0.69%) Retail Banking
14 62 (0.63%) Publishing
15 59 (0.60%) Automotive
16 54 (0.55%) Front Office
17 50 (0.51%) Back Office
18 32 (0.33%) Pharmaceutical
19 31 (0.32%) Legal
20 21 (0.21%) Aerospace
Job Titles
1 6,644 (67.52%) Developer
2 1,933 (19.64%) .NET Developer
3 1,716 (17.44%) C# Developer
4 1,581 (16.07%) Java Developer
5 1,360 (13.82%) Senior Developer
6 1,128 (11.46%) C# .NET Developer
7 986 (10.02%) Software Engineer
8 869 (8.83%) Software Developer
9 489 (4.97%) ASP.NET Developer
10 478 (4.86%) C# ASP.NET Developer
11 467 (4.75%) Front End Developer (Client-Side Developer)
12 461 (4.68%) Java Engineer
13 447 (4.54%) JavaScript Developer
14 406 (4.13%) Full Stack Developer
15 401 (4.08%) Senior Java Developer
16 390 (3.96%) Lead Developer
17 307 (3.12%) Python Developer
18 305 (3.10%) ASP.NET MVC Developer
18 305 (3.10%) Senior .NET Developer
19 301 (3.06%) Java Software Engineer
Libraries, Frameworks & Software Standards
1 3,641 (37.00%) .NET
2 2,367 (24.05%) AngularJS
3 2,290 (23.27%) HTML
4 2,099 (21.33%) ASP.NET
5 2,072 (21.06%) CSS
6 1,694 (17.22%) React
7 1,607 (16.33%) RESTful
8 1,502 (15.26%) Node.js
9 1,466 (14.90%) Spring
10 1,397 (14.20%) ASP.NET MVC
11 1,317 (13.38%) ASP.NET Web API
12 1,242 (12.62%) Web Services
13 1,228 (12.48%) REST
14 1,055 (10.72%) .NET Framework
15 989 (10.05%) HTML5
16 766 (7.78%) jQuery
17 737 (7.49%) .NET Core
18 725 (7.37%) Entity Framework
19 712 (7.24%) WCF
20 548 (5.57%) JSON
Miscellaneous
1 1,227 (12.47%) Greenfield Project
2 761 (7.73%) User Experience
3 535 (5.44%) Enterprise Software
4 409 (4.16%) Analytical Skills
5 353 (3.59%) Mobile App
6 264 (2.68%) Algorithms
7 256 (2.60%) Self-Motivation
8 134 (1.36%) Cloud Native
9 128 (1.30%) Data Structures
10 91 (0.92%) Virtual Team
11 74 (0.75%) Public Cloud
12 57 (0.58%) Linux Command Line
13 56 (0.57%) Management Information System
14 55 (0.56%) Social Media
15 52 (0.53%) Tandem
16 50 (0.51%) Foreign Exchange (FX)
16 50 (0.51%) Internet of Things
17 48 (0.49%) Blog
17 48 (0.49%) Life Science
18 47 (0.48%) Fixed Income
Operating Systems
1 904 (9.19%) Linux
2 541 (5.50%) Windows
3 430 (4.37%) Android
4 316 (3.21%) Apple iOS
5 137 (1.39%) Unix
6 46 (0.47%) Windows Server
7 26 (0.26%) Red Hat Enterprise Linux
7 26 (0.26%) Ubuntu
8 25 (0.25%) CentOS
9 18 (0.18%) Mac OS X
10 15 (0.15%) Mac OS
11 11 (0.11%) openSUSE
11 11 (0.11%) Windows 10
12 9 (0.091%) Debian
13 4 (0.041%) watchOS
13 4 (0.041%) Windows 7
13 4 (0.041%) Windows Mobile
13 4 (0.041%) zOS
14 3 (0.030%) Windows Server 2012
15 2 (0.020%) Windows Server 2008
Processes & Methodologies
1 7,362 (74.82%) Agile Software Development
2 3,978 (40.43%) BDD
3 2,745 (27.90%) Scrum
4 2,588 (26.30%) Continuous Integration
5 2,442 (24.82%) MVC
6 2,437 (24.77%) Software Engineering
7 2,093 (21.27%) Test Automation
8 1,883 (19.14%) DevOps
9 1,754 (17.83%) Microservices
10 1,338 (13.60%) OO
11 1,166 (11.85%) Kanban
12 1,146 (11.65%) Unit Testing
13 1,090 (11.08%) Mentoring
14 976 (9.92%) Problem-Solving
15 940 (9.55%) SOLID
16 933 (9.48%) Continuous Delivery
17 898 (9.13%) Pair Programming
18 743 (7.55%) Open Source
19 734 (7.46%) SDLC
20 723 (7.35%) Front End Development
Programming Languages
1 4,178 (42.46%) C#
2 4,129 (41.96%) JavaScript
3 3,672 (37.32%) Java
4 2,628 (26.71%) SQL
5 1,285 (13.06%) Python
6 789 (8.02%) Java 8
7 782 (7.95%) Ruby
8 554 (5.63%) PHP
9 552 (5.61%) Scala
10 520 (5.28%) C++
11 475 (4.83%) TypeScript
12 372 (3.78%) C
13 359 (3.65%) ES6
14 338 (3.43%) T-SQL
15 246 (2.50%) Go
16 241 (2.45%) Kotlin
17 189 (1.92%) PowerShell
18 129 (1.31%) Bash Shell
19 115 (1.17%) Apple Swift
20 108 (1.10%) VB.NET
Qualifications
1 926 (9.41%) Degree
2 389 (3.95%) Security Cleared
3 306 (3.11%) Computer Science Degree
4 257 (2.61%) SC Cleared
5 163 (1.66%) DV Cleared
6 148 (1.50%) ISTQB
7 80 (0.81%) ISEB
7 80 (0.81%) ISTQB Foundation Certification
7 80 (0.81%) Microsoft Certification
8 26 (0.26%) Numerate Degree
9 19 (0.19%) PhD
10 18 (0.18%) DBS Check
11 15 (0.15%) AWS Certification
12 14 (0.14%) Postgraduate
13 13 (0.13%) HND
14 12 (0.12%) MCAD
14 12 (0.12%) MCSD
14 12 (0.12%) MCTS
15 9 (0.091%) ISTQB Advanced Certification
15 9 (0.091%) PMI Certification
Quality Assurance & Compliance
1 865 (8.79%) QA
2 30 (0.30%) WAI
3 28 (0.28%) GDPR
4 25 (0.25%) PSD2
5 17 (0.17%) Data Quality
5 17 (0.17%) SLA
6 16 (0.16%) PMO
7 10 (0.10%) 21 CFR Part 11
8 7 (0.071%) HIPAA
8 7 (0.071%) MiFID
8 7 (0.071%) SEPA
9 6 (0.061%) TickIT
9 6 (0.061%) WCAG
10 5 (0.051%) ISO/IEC 27001
11 4 (0.041%) EMIR
12 3 (0.030%) PCI DSS
13 2 (0.020%) DICOM
13 2 (0.020%) Dodd-Frank
14 1 (0.010%) HL7
14 1 (0.010%) ISO 20022
System Software
1 1,455 (14.79%) Docker
2 89 (0.90%) Active Directory
3 61 (0.62%) vSphere
4 42 (0.43%) Apache ZooKeeper
5 36 (0.37%) VMware Infrastructure
6 35 (0.36%) VirtualBox
7 25 (0.25%) Firmware
8 22 (0.22%) HDFS
9 16 (0.16%) Hyper-V
9 16 (0.16%) Varnish
10 8 (0.081%) Virtual Machines
11 7 (0.071%) Apache Flume
12 5 (0.051%) etcd
12 5 (0.051%) Tivoli Workload Scheduler
13 4 (0.041%) Virtual Desktop
14 2 (0.020%) Oracle RAC
14 2 (0.020%) Postfix
14 2 (0.020%) VMware ESXi
14 2 (0.020%) VMware NSX
14 2 (0.020%) zsh
Systems Management
1 762 (7.74%) Kubernetes
2 426 (4.33%) Ansible
3 263 (2.67%) Terraform
4 197 (2.00%) Opscode Chef
5 192 (1.95%) Puppet
6 75 (0.76%) HP Quality Center
7 55 (0.56%) Rancher
8 50 (0.51%) Prometheus
9 47 (0.48%) Grafana
10 46 (0.47%) Kibana
11 29 (0.29%) Mesos
12 22 (0.22%) Salt
13 19 (0.19%) Hadoop YARN
14 17 (0.17%) Consul
14 17 (0.17%) HP ALM
14 17 (0.17%) Istio
14 17 (0.17%) logstash
14 17 (0.17%) Marathon
15 15 (0.15%) Single Sign-On
16 11 (0.11%) Docker Swarm
Vendors
1 1,430 (14.53%) Microsoft
2 546 (5.55%) Google
3 535 (5.44%) Oracle
4 167 (1.70%) WorldPay
5 164 (1.67%) SAP
6 114 (1.16%) Xamarin
7 103 (1.05%) Splunk
8 86 (0.87%) Sitecore
9 75 (0.76%) Atlassian
10 74 (0.75%) Salesforce.com
11 70 (0.71%) Facebook
12 69 (0.70%) HP
13 62 (0.63%) Apple
14 53 (0.54%) IBM
15 52 (0.53%) VMware
16 48 (0.49%) Adobe
16 48 (0.49%) Zend
17 43 (0.44%) Twitter
18 41 (0.42%) Cypress Semiconductor
19 35 (0.36%) New Relic