Period
to 19 September 2021

The following table provides summary statistics for permanent job vacancies advertised in England 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 September 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > England
6 months to
19 Sep 2021
Same period 2020 Same period 2019
Rank 35 30 30
Rank change year-on-year -5 0 -6
Permanent jobs citing TDD 7,621 3,559 8,836
As % of all permanent jobs advertised in England 7.19% 7.76% 6.77%
As % of the Processes & Methodologies category 7.64% 8.31% 7.30%
Number of salaries quoted 4,446 3,081 7,166
10th Percentile £41,125 £38,750 £35,000
25th Percentile £50,000 £47,500 £43,750
Median annual salary (50th Percentile) £62,500 £60,000 £57,500
Median % change year-on-year +4.17% +4.35% +4.55%
75th Percentile £80,000 £77,500 £75,000
90th Percentile £92,500 £91,250 £87,500
UK median annual salary £62,500 £60,000 £56,500
% change year-on-year +4.17% +6.19% +2.73%

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 advertised in England with a requirement for process or methodology skills.

All Process and Methodology Skills
England
Permanent vacancies with a requirement for process or methodology skills 99,800 42,818 120,979
As % of all permanent IT jobs advertised in England 94.15% 93.32% 92.64%
Number of salaries quoted 67,410 35,585 97,007
10th Percentile £32,946 £33,500 £30,000
25th Percentile £42,500 £42,500 £38,500
Median annual salary (50th Percentile) £57,500 £56,832 £52,500
Median % change year-on-year +1.18% +8.25% +2.94%
75th Percentile £77,500 £75,000 £71,250
90th Percentile £95,000 £92,500 £87,500
UK median annual salary £57,500 £55,000 £52,500
% change year-on-year +4.55% +4.76% +5.00%

TDD
Job Vacancy Trend in England

Job postings citing TDD as a proportion of all IT jobs advertised in England.

Job vacancy trend for TDD in England

TDD
Salary Trend in England

3-month moving average salary quoted in jobs citing TDD in England.

Salary trend for TDD in England

TDD
Salary Histogram in England

Salary distribution for jobs citing TDD in England over the 6 months to 19 September 2021.

Salary histogram for TDD in England

TDD
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the England region over the 6 months to 19 September 2021. 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
London -9 4,318 £75,000 +7.14% 758
South East +2 1,284 £55,000 - 178
North of England -7 883 £55,000 +10.00% 265
North West -6 490 £55,000 - 165
Midlands -9 461 £50,000 -1.96% 152
South West -18 383 £55,000 +10.00% 81
Yorkshire -8 348 £57,500 +15.00% 63
West Midlands -13 320 £52,500 - 93
East of England +8 204 £60,000 +9.09% 59
East Midlands +7 140 £50,000 - 59
North East -31 45 £45,345 +0.77% 37
TDD
UK

For the 6 months to 19 September 2021, 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 across the England region with a requirement for TDD.

1 5,464 (71.70%) Agile Software Development
2 3,249 (42.63%) JavaScript
3 2,832 (37.16%) Java
4 2,686 (35.24%) React
5 2,540 (33.33%) Microservices
6 2,525 (33.13%) AWS
7 2,473 (32.45%) BDD
7 2,473 (32.45%) Software Engineering
8 2,378 (31.20%) C#
9 2,181 (28.62%) Scrum
10 2,049 (26.89%) Azure
11 2,006 (26.32%) DevOps
12 2,003 (26.28%) .NET
13 1,969 (25.84%) Docker
14 1,758 (23.07%) SQL
15 1,721 (22.58%) Git (software)
16 1,643 (21.56%) Continuous Integration
17 1,606 (21.07%) AngularJS
18 1,578 (20.71%) Full Stack Development
19 1,560 (20.47%) Finance
20 1,546 (20.29%) Node.js
21 1,536 (20.15%) Kubernetes
22 1,508 (19.79%) Test Automation
23 1,503 (19.72%) Python
24 1,469 (19.28%) CSS
25 1,416 (18.58%) Social Skills
26 1,396 (18.32%) Spring
27 1,320 (17.32%) HTML
28 1,292 (16.95%) REST
29 1,229 (16.13%) TypeScript

TDD
Co-occurring IT Skills in England 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
1 433 (5.68%) Elasticsearch
2 224 (2.94%) Apache
3 223 (2.93%) Apache Spark
4 210 (2.76%) CMS
5 175 (2.30%) Confluence
6 160 (2.10%) GemFire
7 104 (1.36%) nginx
8 72 (0.94%) Cloud Foundry
9 66 (0.87%) WordPress
10 57 (0.75%) Tomcat
11 53 (0.70%) EPiServer
11 53 (0.70%) IIS
12 42 (0.55%) Apache Solr
13 38 (0.50%) Umbraco
14 34 (0.45%) Drupal
15 30 (0.39%) OpenStack
15 30 (0.39%) SharePoint
16 27 (0.35%) Headless CMS
16 27 (0.35%) JBoss
17 24 (0.31%) Oracle Workflow
Applications
1 45 (0.59%) Sketch
2 33 (0.43%) Simulink
3 31 (0.41%) Microsoft Office
4 30 (0.39%) InVision
5 28 (0.37%) Figma
6 14 (0.18%) Chatbot
6 14 (0.18%) MS Visio
7 13 (0.17%) Microsoft Excel
8 4 (0.052%) Adobe Illustrator
8 4 (0.052%) Zeplin
9 3 (0.039%) EngageOne
9 3 (0.039%) Maya
10 1 (0.013%) Adobe XD
10 1 (0.013%) Photoshop
Business Applications
1 78 (1.02%) Dynamics CRM
2 53 (0.70%) Payment Gateway
3 11 (0.14%) Magento
4 9 (0.12%) Oracle BPM
5 8 (0.10%) Distributed Ledger
6 7 (0.092%) IBM Operational Decision Manager
6 7 (0.092%) R3 Corda
7 6 (0.079%) MetaTrader
7 6 (0.079%) NetSuite
8 5 (0.066%) Refinitiv Enterprise Platform
8 5 (0.066%) RMDS
9 4 (0.052%) Summit
10 3 (0.039%) Salesforce.com CRM
10 3 (0.039%) SDL Web 8
10 3 (0.039%) Shopify
11 2 (0.026%) Academy Revenues and Benefits
11 2 (0.026%) Actimize
12 1 (0.013%) Oracle Receivables
12 1 (0.013%) Sentinel
Cloud Services
1 2,525 (33.13%) AWS
2 2,049 (26.89%) Azure
3 904 (11.86%) Serverless
4 879 (11.53%) GCP
5 694 (9.11%) GitHub
6 464 (6.09%) SaaS
7 421 (5.52%) AWS Lambda
8 240 (3.15%) Amazon S3
9 201 (2.64%) AWS CloudFormation
10 200 (2.62%) Amazon EC2
11 180 (2.36%) PaaS
12 145 (1.90%) Amazon ECS
13 133 (1.75%) Amazon Kinesis
14 125 (1.64%) Amazon SQS
15 107 (1.40%) npm
16 98 (1.29%) Azure Functions
16 98 (1.29%) Heroku
17 94 (1.23%) Azure Service Bus
18 85 (1.12%) Azure Cosmos DB
18 85 (1.12%) Cloud Computing
Communications & Networking
1 225 (2.95%) Broadband
2 221 (2.90%) HTTP
3 65 (0.85%) Internet
4 39 (0.51%) TCP/IP
5 35 (0.46%) Calico
6 34 (0.45%) Modbus
6 34 (0.45%) RS-422
6 34 (0.45%) RS-485
7 26 (0.34%) Bluetooth
7 26 (0.34%) DVB
8 23 (0.30%) MQTT
9 17 (0.22%) AMQP
10 16 (0.21%) DNS
10 16 (0.21%) WebEx
11 14 (0.18%) Network Security
12 13 (0.17%) NFC
13 9 (0.12%) 5G
14 8 (0.10%) RTP
14 8 (0.10%) SSL
14 8 (0.10%) Wireshark
Database & Business Intelligence
1 966 (12.68%) SQL Server
2 960 (12.60%) NoSQL
3 854 (11.21%) PostgreSQL
4 573 (7.52%) Relational Database
5 566 (7.43%) Redis
6 549 (7.20%) MySQL
7 517 (6.78%) Big Data
8 394 (5.17%) MongoDB
9 259 (3.40%) Amazon DynamoDB
10 171 (2.24%) Amazon RDS
11 152 (1.99%) HBase
12 142 (1.86%) RDBMS
13 136 (1.78%) MariaDB
14 115 (1.51%) Apache Cassandra
15 102 (1.34%) Amazon Aurora
16 97 (1.27%) Hadoop
17 66 (0.87%) Blockchain
18 60 (0.79%) Azure SQL Database
19 51 (0.67%) Amazon Athena
20 50 (0.66%) Data Warehouse
Development Applications
1 1,721 (22.58%) Git (software)
2 1,209 (15.86%) Jenkins
3 578 (7.58%) Selenium
4 499 (6.55%) JIRA
5 409 (5.37%) Cucumber
6 392 (5.14%) Cypress.io
7 330 (4.33%) JUnit
8 307 (4.03%) Gradle
9 305 (4.00%) GitLab
10 276 (3.62%) webpack
11 251 (3.29%) Maven
12 240 (3.15%) NUnit
13 216 (2.83%) Octopus Deploy
14 215 (2.82%) Protractor
15 212 (2.78%) Mockito
16 205 (2.69%) Team Foundation Server
17 203 (2.66%) Storybook
18 200 (2.62%) IntelliJ
18 200 (2.62%) TeamCity
19 195 (2.56%) Sonatype Nexus
General
1 1,560 (20.47%) Finance
2 1,416 (18.58%) Social Skills
3 652 (8.56%) Banking
4 366 (4.80%) Inclusion and Diversity
5 338 (4.44%) Retail
6 311 (4.08%) Analytical Skills
7 262 (3.44%) Games
8 250 (3.28%) Marketing
9 236 (3.10%) Law
10 177 (2.32%) Public Sector
11 123 (1.61%) Publishing
12 114 (1.50%) Legal
13 103 (1.35%) Front Office
13 103 (1.35%) Pharmaceutical
14 102 (1.34%) Advertising
15 100 (1.31%) Electronics
16 95 (1.25%) Investment Banking
17 93 (1.22%) Telecoms
18 78 (1.02%) Financial Institution
19 72 (0.94%) Presentation Skills
Job Titles
1 4,198 (55.08%) Developer
2 1,382 (18.13%) Software Engineer
3 1,106 (14.51%) Senior Developer
4 976 (12.81%) Java Developer
5 661 (8.67%) Software Developer
6 625 (8.20%) .NET Developer
7 552 (7.24%) Full Stack Developer
8 476 (6.25%) Senior Software Engineer
9 472 (6.19%) Front End Developer (Client-Side Developer)
10 442 (5.80%) React Developer
11 415 (5.45%) C# Developer
12 358 (4.70%) Lead Developer
13 294 (3.86%) Java Engineer
14 265 (3.48%) C# .NET Developer
15 218 (2.86%) Senior Java Developer
16 209 (2.74%) PHP Developer
17 199 (2.61%) Backend Developer
18 186 (2.44%) Senior Software Developer
19 183 (2.40%) Senior .NET Developer
20 169 (2.22%) Test Engineer
Libraries, Frameworks & Software Standards
1 2,686 (35.24%) React
2 2,003 (26.28%) .NET
3 1,606 (21.07%) AngularJS
4 1,546 (20.29%) Node.js
5 1,469 (19.28%) CSS
6 1,396 (18.32%) Spring
7 1,320 (17.32%) HTML
8 1,292 (16.95%) REST
9 1,131 (14.84%) RESTful
10 1,106 (14.51%) .NET Core
11 1,034 (13.57%) Web Services
12 697 (9.15%) Redux
13 662 (8.69%) Spring Boot
14 653 (8.57%) GraphQL
15 652 (8.56%) Kafka
16 606 (7.95%) .NET Framework
17 570 (7.48%) Vue.js
18 544 (7.14%) HTML5
19 505 (6.63%) ASP.NET
20 468 (6.14%) RabbitMQ
Miscellaneous
1 740 (9.71%) User Experience
2 496 (6.51%) Greenfield Project
3 357 (4.68%) Self-Motivation
4 339 (4.45%) Mobile App
5 297 (3.90%) Algorithms
6 207 (2.72%) Data Structures
7 197 (2.58%) Enterprise Software
8 179 (2.35%) Virtual Team
9 172 (2.26%) Social Media
10 139 (1.82%) Linux Command Line
11 137 (1.80%) Cloud Native
12 106 (1.39%) Video\Live Streaming
13 98 (1.29%) NHS
14 95 (1.25%) Legacy Code
15 94 (1.23%) Legacy Systems
16 90 (1.18%) Blog
17 83 (1.09%) Management Information System
18 78 (1.02%) Derivative
19 74 (0.97%) Legacy Applications
19 74 (0.97%) Life Science
Operating Systems
1 775 (10.17%) Linux
2 347 (4.55%) Unix
3 342 (4.49%) Android
4 308 (4.04%) Windows
5 284 (3.73%) Apple iOS
6 34 (0.45%) Mesosphere
7 30 (0.39%) Mac OS
8 26 (0.34%) Mac OS X
9 21 (0.28%) Ubuntu
9 21 (0.28%) Windows Server
10 17 (0.22%) Embedded Linux
11 11 (0.14%) CentOS
11 11 (0.14%) VMS
12 7 (0.092%) SUSE
13 4 (0.052%) DC/OS
13 4 (0.052%) Tizen
13 4 (0.052%) webOS
14 2 (0.026%) Red Hat Enterprise Linux
15 1 (0.013%) Fedora
15 1 (0.013%) OpenWrt
Processes & Methodologies
1 5,464 (71.70%) Agile Software Development
2 2,540 (33.33%) Microservices
3 2,473 (32.45%) BDD
3 2,473 (32.45%) Software Engineering
4 2,181 (28.62%) Scrum
5 2,006 (26.32%) DevOps
6 1,643 (21.56%) Continuous Integration
7 1,578 (20.71%) Full Stack Development
8 1,508 (19.79%) Test Automation
9 1,093 (14.34%) SOLID
10 1,034 (13.57%) Unit Testing
11 1,027 (13.48%) Mentoring
12 989 (12.98%) OO
13 879 (11.53%) Problem-Solving
14 818 (10.73%) Computer Science
15 801 (10.51%) MVC
16 800 (10.50%) Pair Programming
17 799 (10.48%) Front End Development
18 783 (10.27%) Continuous Delivery
19 780 (10.23%) SDLC
Programming Languages
1 3,249 (42.63%) JavaScript
2 2,832 (37.16%) Java
3 2,378 (31.20%) C#
4 1,758 (23.07%) SQL
5 1,503 (19.72%) Python
6 1,229 (16.13%) TypeScript
7 560 (7.35%) Java 8
8 478 (6.27%) C++
9 474 (6.22%) PHP
10 444 (5.83%) Kotlin
11 423 (5.55%) Scala
12 376 (4.93%) Go
13 357 (4.68%) ES6
14 330 (4.33%) Ruby
15 303 (3.98%) C
16 224 (2.94%) Java 11
17 191 (2.51%) Groovy
18 180 (2.36%) Shell Script
19 169 (2.22%) Bash Shell
20 153 (2.01%) PowerShell
Qualifications
1 875 (11.48%) Degree
2 445 (5.84%) Computer Science Degree
3 259 (3.40%) Security Cleared
4 235 (3.08%) SC Cleared
5 150 (1.97%) OCP
5 150 (1.97%) Oracle Certification
6 59 (0.77%) Master's Degree
7 54 (0.71%) ISTQB
8 37 (0.49%) ISTQB Foundation Certification
9 34 (0.45%) ISEB
10 27 (0.35%) AWS Certification
11 25 (0.33%) Microsoft Certification
12 22 (0.29%) PhD
13 17 (0.22%) SANS
14 15 (0.20%) Numerate Degree
15 9 (0.12%) DV Cleared
16 4 (0.052%) CITP
16 4 (0.052%) DBS Check
16 4 (0.052%) ISEB Practitioner
17 3 (0.039%) ISTQB Advanced Certification
Quality Assurance & Compliance
1 778 (10.21%) QA
2 136 (1.78%) Accessibility
3 56 (0.73%) PSD2
4 53 (0.70%) SLA
5 45 (0.59%) GDPR
6 37 (0.49%) Data Quality
7 33 (0.43%) Def Stans
7 33 (0.43%) MISRA
8 26 (0.34%) WCAG
9 25 (0.33%) EMIR
9 25 (0.33%) MiFID
10 12 (0.16%) ISO 9001
11 11 (0.14%) WAI
12 6 (0.079%) ISO/IEC 27001
12 6 (0.079%) PCI DSS
13 5 (0.066%) ISO 20022
13 5 (0.066%) SOC 2
14 4 (0.052%) SEPA
15 3 (0.039%) 21 CFR Part 11
16 2 (0.026%) GxP
System Software
1 1,969 (25.84%) Docker
2 124 (1.63%) HDFS
3 108 (1.42%) VMware Infrastructure
4 38 (0.50%) Virtual Machines
5 36 (0.47%) Firmware
6 34 (0.45%) Active Directory
6 34 (0.45%) Apache ZooKeeper
7 27 (0.35%) NDS
7 27 (0.35%) NetIQ eDirectory
8 22 (0.29%) Postfix
9 11 (0.14%) Ceph
9 11 (0.14%) Varnish
10 7 (0.092%) vSphere
11 4 (0.052%) NFS
12 2 (0.026%) Hyper-V
12 2 (0.026%) KVM
13 1 (0.013%) Platform Symphony
Systems Management
1 1,536 (20.15%) Kubernetes
2 694 (9.11%) Terraform
3 367 (4.82%) Ansible
4 197 (2.58%) Grafana
5 161 (2.11%) Prometheus
6 157 (2.06%) Opscode Chef
7 105 (1.38%) Kibana
8 83 (1.09%) Puppet
9 60 (0.79%) logstash
10 45 (0.59%) Opsgenie
11 44 (0.58%) Graphite
12 34 (0.45%) Automic
12 34 (0.45%) Graylog
13 28 (0.37%) Consul
13 28 (0.37%) NetIQ Identity Manager
14 22 (0.29%) Istio
14 22 (0.29%) linkerd
15 20 (0.26%) MIIS
15 20 (0.26%) Rancher
15 20 (0.26%) ZABBIX
Vendors
1 522 (6.85%) Microsoft
2 461 (6.05%) Google
3 311 (4.08%) Oracle
4 144 (1.89%) VMware
5 130 (1.71%) Okta
6 84 (1.10%) Apple
7 83 (1.09%) IBM
8 81 (1.06%) Splunk
9 77 (1.01%) Instagram
10 70 (0.92%) Atlassian
11 53 (0.70%) YouTube
12 52 (0.68%) Salesforce.com
13 44 (0.58%) New Relic
14 38 (0.50%) Sybase
15 34 (0.45%) Xamarin
16 33 (0.43%) Adobe
16 33 (0.43%) Spotify
17 32 (0.42%) LexisNexis
18 31 (0.41%) WooCommerce
19 29 (0.38%) BT