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

Test-Driven Development (TDD)
UK
6 months to
19 Feb 2019
Same period 2018 Same period 2017
Rank 25 19 21
Rank change year-on-year -6 +2 +3
Permanent jobs citing TDD 11,818 16,270 14,742
As % of all permanent IT jobs advertised in the UK 7.80% 9.27% 8.50%
As % of the Processes & Methodologies category 8.50% 10.09% 9.31%
Number of salaries quoted 10,082 14,207 13,340
UK median annual salary £55,000 £50,000 £50,000
Median salary % change year-on-year +10.00% - -
10th Percentile £33,750 £32,500 £32,500
90th Percentile £87,500 £78,500 £77,500
UK excluding London median annual salary £50,000 £45,000 £45,000
% change year-on-year +11.11% - +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 139,013 161,247 158,373
As % of all permanent IT jobs advertised in the UK 91.74% 91.84% 91.31%
Number of salaries quoted 109,707 130,895 130,572
UK median annual salary £52,500 £50,000 £47,500
Median salary % change year-on-year +5.00% +5.26% -
10th Percentile £30,000 £28,750 £27,750
90th Percentile £85,000 £80,000 £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 February 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 February 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 -5 11,140 £55,000 +4.76% 2,254
UK excluding London -5 6,203 £50,000 +11.11% 1,274
London -7 5,414 £65,000 +4.00% 1,081
South East -7 1,967 £50,000 +11.11% 316
North of England -4 1,703 £47,500 +5.56% 383
North West -9 937 £50,000 +11.11% 195
South West -5 818 £50,000 +5.26% 133
Yorkshire +4 655 £45,000 - 144
Midlands -5 649 £45,000 +5.88% 187
East of England -11 590 £52,500 +5.00% 154
West Midlands +9 369 £45,000 +12.50% 105
Scotland -16 350 £47,500 -5.00% 61
East Midlands -13 280 £41,000 -3.53% 82
North East +6 113 £45,000 - 44
Wales -12 103 £45,000 +12.50% 35
Northern Ireland -1 61 £42,500 +6.25% 5

For the 6 months to 19 February 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 8,897 (75.28%) Agile Software Development
2 5,187 (43.89%) C#
3 4,674 (39.55%) BDD
4 4,669 (39.51%) JavaScript
5 4,536 (38.38%) Java
6 4,496 (38.04%) .NET
7 3,339 (28.25%) Continuous Integration
8 3,310 (28.01%) Scrum
9 3,211 (27.17%) SQL
10 3,099 (26.22%) MVC
11 2,890 (24.45%) AngularJS
12 2,820 (23.86%) SQL Server
13 2,732 (23.12%) HTML
14 2,651 (22.43%) Software Engineering
15 2,627 (22.23%) ASP.NET
16 2,597 (21.97%) Git (software)
17 2,428 (20.54%) CSS
18 2,224 (18.82%) Test Automation
19 2,194 (18.56%) Finance
20 2,179 (18.44%) Microservices
21 2,067 (17.49%) RESTful
22 1,904 (16.11%) ASP.NET MVC
23 1,848 (15.64%) Amazon AWS
24 1,795 (15.19%) DevOps
25 1,791 (15.15%) Node.js
26 1,776 (15.03%) ASP.NET Web API
27 1,753 (14.83%) Microsoft Azure
27 1,753 (14.83%) Spring
28 1,689 (14.29%) React
29 1,667 (14.11%) Microsoft

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
1 385 (3.26%) Elasticsearch
2 355 (3.00%) Confluence
3 301 (2.55%) Apache
4 251 (2.12%) Apache Spark
5 223 (1.89%) CMS
6 196 (1.66%) Tomcat
7 165 (1.40%) IIS
8 141 (1.19%) JBoss
9 95 (0.80%) Umbraco
10 83 (0.70%) Sitecore CMS
11 82 (0.69%) EPiServer
12 81 (0.69%) nginx
13 71 (0.60%) WordPress
14 70 (0.59%) Cloud Foundry
15 66 (0.56%) Drupal
16 65 (0.55%) WebSphere
17 62 (0.52%) WebLogic
18 54 (0.46%) SharePoint
19 53 (0.45%) Apache Solr
19 53 (0.45%) NServiceBus
Applications
1 30 (0.25%) Microsoft Office
2 22 (0.19%) Photoshop
3 19 (0.16%) Microsoft Project
4 16 (0.14%) Chatbot
5 14 (0.12%) Microsoft Excel
6 13 (0.11%) MS Visio
7 9 (0.076%) InVision
8 7 (0.059%) Microsoft PowerPoint
9 5 (0.042%) Adobe Illustrator
10 4 (0.034%) Adobe Creative Suite
10 4 (0.034%) Fireworks
10 4 (0.034%) Mingle
10 4 (0.034%) Open Workbench
11 3 (0.025%) Spreadsheet
12 2 (0.017%) GIMP
12 2 (0.017%) Snapchat
13 1 (0.008%) HipChat
13 1 (0.008%) InfoPath
13 1 (0.008%) OmniGraffle
13 1 (0.008%) SPSS
Business Applications
1 53 (0.45%) Payment Gateway
2 47 (0.40%) Dynamics CRM
3 34 (0.29%) Magento
4 11 (0.093%) Distributed Ledger
5 10 (0.085%) Eloqua
6 9 (0.076%) FastStats
6 9 (0.076%) Oracle BPM
7 6 (0.051%) Oracle EBS
7 6 (0.051%) Oracle Retail
8 4 (0.034%) Dynamics AX
8 4 (0.034%) R3 Corda
9 3 (0.025%) Remedy ITSM
9 3 (0.025%) SAP Hybris
10 2 (0.017%) Markit EDM
10 2 (0.017%) SAP BPC
10 2 (0.017%) SAP CO
10 2 (0.017%) SAP FI/CO
10 2 (0.017%) SAP FS
10 2 (0.017%) SAP FSCM
10 2 (0.017%) thinkFolio
Cloud Services
1 1,848 (15.64%) Amazon AWS
2 1,753 (14.83%) Microsoft Azure
3 395 (3.34%) GitHub
4 362 (3.06%) SaaS
5 306 (2.59%) Google Cloud Platform
6 258 (2.18%) Serverless
7 189 (1.60%) npm
8 153 (1.29%) Amazon EC2
9 150 (1.27%) PaaS
10 144 (1.22%) Cloud Computing
11 109 (0.92%) OpenShift
12 92 (0.78%) AWS Lambda
13 78 (0.66%) IaaS
14 76 (0.64%) Amazon S3
15 69 (0.58%) Office 365
16 52 (0.44%) Amazon SQS
17 48 (0.41%) Amazon EMR
18 45 (0.38%) G Suite
19 43 (0.36%) Dynamics 365
20 41 (0.35%) NuGet
Communications & Networking
1 462 (3.91%) Internet
2 237 (2.01%) HTTP
3 66 (0.56%) Broadband
3 66 (0.56%) TCP/IP
4 52 (0.44%) Hyperconnected
5 50 (0.42%) SSL
6 39 (0.33%) Wireless
7 26 (0.22%) AMQP
8 25 (0.21%) Firewall
8 25 (0.21%) RIP
9 23 (0.19%) Wi-Fi
10 22 (0.19%) Bluetooth
11 21 (0.18%) HTTPS
12 18 (0.15%) DNS
13 14 (0.12%) Network Security
13 14 (0.12%) SSH
13 14 (0.12%) VLAN
14 12 (0.10%) Reverse Proxy
14 12 (0.10%) SNMP
15 10 (0.085%) Ethernet
Database & Business Intelligence
1 2,820 (23.86%) SQL Server
2 1,474 (12.47%) NoSQL
3 1,051 (8.89%) SQL Server 2016
4 743 (6.29%) MySQL
5 685 (5.80%) MongoDB
6 632 (5.35%) Big Data
7 610 (5.16%) PostgreSQL
8 532 (4.50%) Relational Database
9 296 (2.50%) Hadoop
10 287 (2.43%) Redis
11 280 (2.37%) Apache Cassandra
12 153 (1.29%) RDBMS
13 132 (1.12%) Amazon DynamoDB
14 127 (1.07%) SQL Server Integration Services
15 114 (0.96%) Oracle Database
16 109 (0.92%) Blockchain
17 107 (0.91%) SQL Server Reporting Services
18 86 (0.73%) SQL Server 2012
19 85 (0.72%) Amazon RDS
20 81 (0.69%) Data Warehouse
Development Applications
1 2,597 (21.97%) Git (software)
2 1,389 (11.75%) Jenkins
3 1,041 (8.81%) Selenium
4 1,029 (8.71%) JIRA
5 745 (6.30%) Visual Studio
6 717 (6.07%) Maven
7 710 (6.01%) Cucumber
8 570 (4.82%) TeamCity
9 532 (4.50%) JUnit
10 466 (3.94%) Team Foundation Server
11 417 (3.53%) NUnit
12 344 (2.91%) Subversion
13 302 (2.56%) SpecFlow
14 294 (2.49%) SoapUI
15 290 (2.45%) WebDriver
16 256 (2.17%) Gradle
16 256 (2.17%) gulp
17 240 (2.03%) webpack
18 227 (1.92%) Octopus Deploy
19 207 (1.75%) Jasmine
General
1 2,194 (18.56%) Finance
2 649 (5.49%) Banking
3 598 (5.06%) Retail
4 545 (4.61%) Games
5 404 (3.42%) Marketing
6 276 (2.34%) Telecoms
7 204 (1.73%) Manufacturing
8 170 (1.44%) Advertising
9 168 (1.42%) Electronics
10 127 (1.07%) Law
11 107 (0.91%) Investment Banking
12 94 (0.80%) Financial Institution
13 93 (0.79%) Automotive
14 92 (0.78%) Publishing
15 91 (0.77%) Front Office
16 66 (0.56%) Legal
17 56 (0.47%) Back Office
18 39 (0.33%) Music Industry
19 35 (0.30%) Pharmaceutical
20 27 (0.23%) Retail Banking
Job Titles
1 8,219 (69.55%) Developer
2 2,712 (22.95%) .NET Developer
3 2,200 (18.62%) Java Developer
4 2,115 (17.90%) C# Developer
5 1,667 (14.11%) Senior Developer
6 1,519 (12.85%) C# .NET Developer
7 1,074 (9.09%) Software Engineer
8 805 (6.81%) Software Developer
9 644 (5.45%) ASP.NET Developer
10 622 (5.26%) C# ASP.NET Developer
11 508 (4.30%) Agile Developer
11 508 (4.30%) Senior Java Developer
12 492 (4.16%) Front End Developer (Client-Side Developer)
13 489 (4.14%) JavaScript Developer
14 468 (3.96%) Java Engineer
15 455 (3.85%) Lead Developer
16 429 (3.63%) Full Stack Developer
17 421 (3.56%) ASP.NET MVC Developer
18 402 (3.40%) Senior .NET Developer
19 386 (3.27%) Architect
Libraries, Frameworks & Software Standards
1 4,496 (38.04%) .NET
2 2,890 (24.45%) AngularJS
3 2,732 (23.12%) HTML
4 2,627 (22.23%) ASP.NET
5 2,428 (20.54%) CSS
6 2,067 (17.49%) RESTful
7 1,904 (16.11%) ASP.NET MVC
8 1,791 (15.15%) Node.js
9 1,776 (15.03%) ASP.NET Web API
10 1,753 (14.83%) Spring
11 1,689 (14.29%) React
12 1,471 (12.45%) Web Services
13 1,434 (12.13%) REST
14 1,224 (10.36%) .NET Framework
15 1,197 (10.13%) HTML5
16 1,058 (8.95%) jQuery
17 1,037 (8.77%) WCF
18 830 (7.02%) Entity Framework
19 776 (6.57%) Twitter Bootstrap
20 755 (6.39%) .NET Core
Miscellaneous
1 1,504 (12.73%) Greenfield Project
2 827 (7.00%) User Experience
3 673 (5.69%) Fintech
4 576 (4.87%) Enterprise Software
5 419 (3.55%) Analytical Skills
6 410 (3.47%) Mobile App
7 270 (2.28%) Self-Motivation
8 257 (2.17%) Algorithms
9 113 (0.96%) Data Structures
10 109 (0.92%) Tandem
11 102 (0.86%) Cloud Native
12 93 (0.79%) Virtual Team
13 73 (0.62%) Social Media
14 72 (0.61%) Linux Command Line
15 71 (0.60%) Hedge funds
16 70 (0.59%) Foreign Exchange (FX)
16 70 (0.59%) Social Network
17 65 (0.55%) Blog
18 62 (0.52%) BBC
19 61 (0.52%) Internet of Things
Operating Systems
1 1,033 (8.74%) Linux
2 697 (5.90%) Windows
3 450 (3.81%) Android
4 365 (3.09%) Apple iOS
5 251 (2.12%) Unix
6 64 (0.54%) Windows Server
7 58 (0.49%) CentOS
8 41 (0.35%) Ubuntu
9 40 (0.34%) Red Hat Enterprise Linux
10 24 (0.20%) Mac OS X
11 22 (0.19%) openSUSE
12 18 (0.15%) Windows 10
13 14 (0.12%) Solaris
14 10 (0.085%) Mac OS
15 9 (0.076%) Debian
16 6 (0.051%) watchOS
17 5 (0.042%) VMS
18 4 (0.034%) zOS
19 3 (0.025%) Windows 7
19 3 (0.025%) Windows Server 2012
Processes & Methodologies
1 8,897 (75.28%) Agile Software Development
2 4,674 (39.55%) BDD
3 3,339 (28.25%) Continuous Integration
4 3,310 (28.01%) Scrum
5 3,099 (26.22%) MVC
6 2,651 (22.43%) Software Engineering
7 2,224 (18.82%) Test Automation
8 2,179 (18.44%) Microservices
9 1,795 (15.19%) DevOps
10 1,640 (13.88%) OO
11 1,498 (12.68%) Kanban
12 1,252 (10.59%) Unit Testing
13 1,135 (9.60%) Continuous Delivery
14 1,033 (8.74%) Pair Programming
15 1,022 (8.65%) SOLID
16 984 (8.33%) Mentoring
17 968 (8.19%) Problem-Solving
18 963 (8.15%) Web Application Development
19 902 (7.63%) SDLC
20 846 (7.16%) Open Source
Programming Languages
1 5,187 (43.89%) C#
2 4,669 (39.51%) JavaScript
3 4,536 (38.38%) Java
4 3,211 (27.17%) SQL
5 1,433 (12.13%) Python
6 1,107 (9.37%) Java 8
7 949 (8.03%) Ruby
8 715 (6.05%) C++
9 636 (5.38%) Scala
10 592 (5.01%) PHP
11 499 (4.22%) TypeScript
12 401 (3.39%) T-SQL
13 389 (3.29%) C
14 380 (3.22%) ES6
15 278 (2.35%) PowerShell
16 251 (2.12%) Go
17 181 (1.53%) Kotlin
18 160 (1.35%) Bash Shell
19 152 (1.29%) Apple Swift
20 130 (1.10%) Groovy
Qualifications
1 1,258 (10.64%) Degree
2 432 (3.66%) Computer Science Degree
3 375 (3.17%) Security Cleared
4 231 (1.95%) SC Cleared
5 131 (1.11%) DV Cleared
6 115 (0.97%) ISTQB
7 88 (0.74%) Microsoft Certification
8 72 (0.61%) ISEB
9 63 (0.53%) Numerate Degree
10 49 (0.41%) ISTQB Foundation Certification
11 33 (0.28%) PMI Certification
12 26 (0.22%) Master's Degree
13 19 (0.16%) CISSP
13 19 (0.16%) MCSE
13 19 (0.16%) PhD
14 17 (0.14%) DBS Check
15 12 (0.10%) ITIL Certification
15 12 (0.10%) MCPD
16 10 (0.085%) AWS Certification
16 10 (0.085%) PRINCE2 Certification
Quality Assurance & Compliance
1 972 (8.22%) QA
2 40 (0.34%) PSD2
3 38 (0.32%) GDPR
4 28 (0.24%) Data Quality
5 23 (0.19%) PMO
6 12 (0.10%) SLA
6 12 (0.10%) WCAG
7 11 (0.093%) WAI
8 9 (0.076%) ISO/IEC 27001
9 7 (0.059%) SEPA
10 5 (0.042%) PMBOK
11 3 (0.025%) MiFID
12 2 (0.017%) Dodd-Frank
12 2 (0.017%) FedRAMP
12 2 (0.017%) ISO 20022
12 2 (0.017%) ISO 9001
12 2 (0.017%) PCI DSS
13 1 (0.008%) HL7
13 1 (0.008%) ISO 8583
System Software
1 1,369 (11.58%) Docker
2 102 (0.86%) Active Directory
3 47 (0.40%) Apache ZooKeeper
4 46 (0.39%) vSphere
5 43 (0.36%) Firmware
6 40 (0.34%) HDFS
7 37 (0.31%) VirtualBox
8 23 (0.19%) VMware Infrastructure
9 15 (0.13%) Virtual Machines
10 11 (0.093%) Varnish
11 9 (0.076%) Apache Flume
12 8 (0.068%) Hyper-V
12 8 (0.068%) Oracle RAC
13 6 (0.051%) NFS
13 6 (0.051%) Samba
13 6 (0.051%) VMware ESXi
13 6 (0.051%) VMware NSX
14 3 (0.025%) etcd
15 2 (0.017%) iptables
15 2 (0.017%) zsh
Systems Management
1 566 (4.79%) Kubernetes
2 404 (3.42%) Ansible
3 283 (2.39%) Terraform
4 271 (2.29%) Puppet
5 222 (1.88%) Opscode Chef
6 74 (0.63%) Kibana
7 70 (0.59%) HP Quality Center
8 45 (0.38%) Rancher
9 43 (0.36%) Salt
10 34 (0.29%) Hadoop YARN
11 29 (0.25%) Grafana
12 24 (0.20%) Prometheus
13 22 (0.19%) Mesos
14 20 (0.17%) HP ALM
15 17 (0.14%) Consul
16 15 (0.13%) Single Sign-On
17 12 (0.10%) logstash
17 12 (0.10%) Nagios
17 12 (0.10%) SCOM
17 12 (0.10%) ZABBIX
Vendors
1 1,667 (14.11%) Microsoft
2 631 (5.34%) Oracle
3 518 (4.38%) Google
4 189 (1.60%) SAP
5 185 (1.57%) Xamarin
6 168 (1.42%) Facebook
7 128 (1.08%) Sitecore
8 126 (1.07%) WorldPay
9 123 (1.04%) Apple
10 106 (0.90%) Atlassian
11 87 (0.74%) Splunk
12 77 (0.65%) Twitter
13 67 (0.57%) IBM
14 65 (0.55%) Zend
15 61 (0.52%) Yahoo!
16 60 (0.51%) Sony
17 58 (0.49%) HP
17 58 (0.49%) Red Hat
18 53 (0.45%) CA Agile Central
19 45 (0.38%) Adobe