Period
to 25 June 2021

The following table provides summary statistics for permanent job vacancies advertised in London 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 25 June 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
England > London
6 months to
25 Jun 2021
Same period 2020 Same period 2019
Rank 29 22 28
Rank change year-on-year -7 +6 -6
Permanent jobs citing TDD 3,438 3,208 4,572
As % of all permanent jobs advertised in London 8.50% 9.60% 7.92%
As % of the Processes & Methodologies category 9.00% 10.24% 8.51%
Number of salaries quoted 2,069 2,800 3,832
10th Percentile £48,750 £42,500 £37,500
25th Percentile £57,500 £53,750 £48,750
Median annual salary (50th Percentile) £75,000 £70,000 £65,000
Median % change year-on-year +7.14% +7.69% -
75th Percentile £86,250 £85,000 £82,500
90th Percentile £100,000 £100,000 £95,000
England median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +4.76%

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 London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Permanent vacancies with a requirement for process or methodology skills 38,211 31,333 53,746
As % of all permanent IT jobs advertised in London 94.47% 93.77% 93.06%
Number of salaries quoted 26,481 25,553 44,000
10th Percentile £42,500 £40,000 £36,250
25th Percentile £52,500 £51,250 £47,500
Median annual salary (50th Percentile) £70,000 £67,500 £65,000
Median % change year-on-year +3.70% +3.85% +8.33%
75th Percentile £87,500 £85,000 £82,500
90th Percentile £105,000 £102,500 £97,500
England median annual salary £55,762 £55,000 £52,500
% change year-on-year +1.39% +4.76% +5.00%

TDD
Job Vacancy Trend in London

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

Job vacancy trend for TDD in London

TDD
Salary Trend in London

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

Salary trend for TDD in London

TDD
Salary Histogram in London

Salary distribution for jobs citing TDD in London over the 6 months to 25 June 2021.

Salary histogram for TDD in London

TDD
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the London region over the 6 months to 25 June 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
Central London -19 415 £77,500 +6.90% 289
West London -1 169 £65,000 +4.00% 90
South London +1 80 £60,305 -3.51% 10
East London -3 7 £52,500 -19.23% 45
North London +16 1 £65,000 +30.00% 5
TDD
England

For the 6 months to 25 June 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 London region with a requirement for TDD.

1 2,382 (69.28%) Agile Software Development
2 1,508 (43.86%) JavaScript
3 1,354 (39.38%) Java
4 1,336 (38.86%) Microservices
5 1,166 (33.92%) BDD
6 1,136 (33.04%) AWS
7 1,117 (32.49%) Software Engineering
8 1,073 (31.21%) Docker
9 971 (28.24%) React
10 890 (25.89%) DevOps
10 890 (25.89%) C#
11 874 (25.42%) Finance
12 865 (25.16%) Kubernetes
13 831 (24.17%) .NET
14 819 (23.82%) Azure
15 766 (22.28%) SQL
16 747 (21.73%) Scrum
17 725 (21.09%) Node.js
18 718 (20.88%) Python
19 712 (20.71%) Git (software)
20 696 (20.24%) Test Automation
21 690 (20.07%) REST
22 682 (19.84%) Continuous Integration
23 647 (18.82%) CSS
24 620 (18.03%) TypeScript
25 617 (17.95%) Spring
26 586 (17.04%) Social Skills
27 581 (16.90%) AngularJS
28 576 (16.75%) HTML
29 517 (15.04%) .NET Core

TDD
Co-occurring IT Skills in London 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
1 188 (5.47%) Elasticsearch
2 85 (2.47%) Confluence
3 73 (2.12%) CMS
4 53 (1.54%) Apache Spark
5 25 (0.73%) Cloud Foundry
6 19 (0.55%) IIS
7 18 (0.52%) Apache Solr
8 17 (0.49%) SharePoint
9 16 (0.47%) Apache
10 15 (0.44%) Drupal
11 14 (0.41%) Umbraco
12 13 (0.38%) WordPress
13 12 (0.35%) Headless CMS
14 11 (0.32%) Apache Airflow
14 11 (0.32%) IBM Domino
14 11 (0.32%) Tomcat
15 10 (0.29%) OpenStack
16 8 (0.23%) Jetty
17 7 (0.20%) Oracle SOA Suite
17 7 (0.20%) Sitecore CMS
Applications
1 24 (0.70%) Sketch
2 23 (0.67%) InVision
3 15 (0.44%) Microsoft Office
4 14 (0.41%) Chatbot
5 8 (0.23%) Microsoft Excel
6 4 (0.12%) Figma
7 3 (0.087%) Maya
8 1 (0.029%) Photoshop
8 1 (0.029%) Zeplin
Business Applications
1 20 (0.58%) Dynamics CRM
2 19 (0.55%) Payment Gateway
3 6 (0.17%) Oracle BPM
4 5 (0.15%) IBM Operational Decision Manager
4 5 (0.15%) Magento
5 4 (0.12%) Summit
6 3 (0.087%) Shopify
7 2 (0.058%) Distributed Ledger
7 2 (0.058%) NetSuite
7 2 (0.058%) R3 Corda
8 1 (0.029%) Academy Revenues and Benefits
8 1 (0.029%) Dynamics AX
8 1 (0.029%) Infor M3
8 1 (0.029%) Oracle Receivables
8 1 (0.029%) Oracle Retail
8 1 (0.029%) Salesforce.com CRM
Cloud Services
1 1,136 (33.04%) AWS
2 819 (23.82%) Azure
3 448 (13.03%) Serverless
4 385 (11.20%) GCP
5 244 (7.10%) SaaS
6 222 (6.46%) GitHub
7 198 (5.76%) AWS Lambda
8 96 (2.79%) Azure Functions
9 92 (2.68%) Amazon S3
10 91 (2.65%) Amazon EC2
11 80 (2.33%) AWS CloudFormation
12 78 (2.27%) PaaS
13 69 (2.01%) Azure Service Bus
14 66 (1.92%) Amazon ECS
15 64 (1.86%) Heroku
16 57 (1.66%) Azure Cosmos DB
17 56 (1.63%) Amazon SQS
18 50 (1.45%) Power Platform
19 47 (1.37%) Amazon EKS
20 46 (1.34%) Azure Service Fabric
Communications & Networking
1 109 (3.17%) HTTP
2 86 (2.50%) Broadband
3 21 (0.61%) Internet
4 10 (0.29%) Network Security
4 10 (0.29%) TCP/IP
5 9 (0.26%) Bluetooth
6 7 (0.20%) DVB
6 7 (0.20%) SSH
7 6 (0.17%) MQTT
7 6 (0.17%) NFC
7 6 (0.17%) Skype
8 4 (0.12%) AMQP
8 4 (0.12%) DNS
9 3 (0.087%) DAB
9 3 (0.087%) SSL
9 3 (0.087%) Wi-Fi
9 3 (0.087%) Wireless
9 3 (0.087%) Wireshark
10 2 (0.058%) RFID
10 2 (0.058%) WebEx
Database & Business Intelligence
1 394 (11.46%) PostgreSQL
2 378 (10.99%) NoSQL
3 364 (10.59%) SQL Server
4 265 (7.71%) Relational Database
5 221 (6.43%) MySQL
6 217 (6.31%) MongoDB
7 210 (6.11%) Redis
8 126 (3.66%) Big Data
9 116 (3.37%) Amazon DynamoDB
10 78 (2.27%) Amazon RDS
11 68 (1.98%) Apache Cassandra
12 58 (1.69%) Hadoop
13 49 (1.43%) Azure SQL Database
14 44 (1.28%) Blockchain
15 43 (1.25%) Power BI
16 42 (1.22%) Amazon Aurora
17 40 (1.16%) RDBMS
18 38 (1.11%) Data Warehouse
19 34 (0.99%) SQL Server Reporting Services
20 29 (0.84%) DB2
Development Applications
1 712 (20.71%) Git (software)
2 343 (9.98%) Jenkins
3 261 (7.59%) Selenium
4 221 (6.43%) JIRA
5 186 (5.41%) Cypress.io
6 183 (5.32%) GitLab
7 149 (4.33%) webpack
8 145 (4.22%) Cucumber
9 129 (3.75%) Maven
9 129 (3.75%) TeamCity
10 116 (3.37%) JUnit
11 104 (3.03%) Gradle
12 96 (2.79%) CircleCI
13 90 (2.62%) Octopus Deploy
14 89 (2.59%) NUnit
15 76 (2.21%) Jasmine
16 69 (2.01%) Visual Studio
17 65 (1.89%) Postman
18 64 (1.86%) SpecFlow
19 58 (1.69%) Mockito
General
1 874 (25.42%) Finance
2 586 (17.04%) Social Skills
3 350 (10.18%) Banking
4 177 (5.15%) Retail
5 150 (4.36%) Games
6 133 (3.87%) Marketing
7 130 (3.78%) Analytical Skills
8 99 (2.88%) Front Office
8 99 (2.88%) Investment Banking
9 83 (2.41%) Advertising
10 75 (2.18%) Publishing
11 70 (2.04%) Public Sector
12 51 (1.48%) Legal
13 43 (1.25%) Financial Institution
14 42 (1.22%) Pharmaceutical
14 42 (1.22%) Presentation Skills
15 32 (0.93%) Telecoms
16 26 (0.76%) Local Government
17 24 (0.70%) Wearables
18 23 (0.67%) Retail Banking
Job Titles
1 1,900 (55.26%) Developer
2 608 (17.68%) Software Engineer
3 541 (15.74%) Senior Developer
4 535 (15.56%) Java Developer
5 281 (8.17%) .NET Developer
6 243 (7.07%) Full Stack Developer
7 240 (6.98%) Senior Software Engineer
8 208 (6.05%) React Developer
9 189 (5.50%) Java Engineer
10 188 (5.47%) Front End Developer (Client-Side Developer)
11 182 (5.29%) C# Developer
12 156 (4.54%) Lead Developer
13 130 (3.78%) Software Developer
14 129 (3.75%) Senior Java Developer
15 123 (3.58%) Backend Developer
16 122 (3.55%) JavaScript Developer
17 107 (3.11%) C# .NET Developer
18 88 (2.56%) Lead Software Engineer
19 86 (2.50%) DevOps Engineer
20 81 (2.36%) Angular Developer
Libraries, Frameworks & Software Standards
1 971 (28.24%) React
2 831 (24.17%) .NET
3 725 (21.09%) Node.js
4 690 (20.07%) REST
5 647 (18.82%) CSS
6 617 (17.95%) Spring
7 581 (16.90%) AngularJS
8 576 (16.75%) HTML
9 517 (15.04%) .NET Core
10 480 (13.96%) RESTful
11 422 (12.27%) Web Services
12 376 (10.94%) GraphQL
13 348 (10.12%) Spring Boot
14 343 (9.98%) Kafka
15 318 (9.25%) Redux
16 297 (8.64%) .NET Framework
17 271 (7.88%) HTML5
18 206 (5.99%) Jest
19 203 (5.90%) CSS3
20 188 (5.47%) Sass
Miscellaneous
1 312 (9.08%) User Experience
2 281 (8.17%) Greenfield Project
3 216 (6.28%) Mobile App
4 139 (4.04%) Self-Motivation
5 129 (3.75%) Algorithms
6 77 (2.24%) Blog
7 76 (2.21%) Data Structures
8 72 (2.09%) Cloud Native
9 67 (1.95%) Derivative
10 61 (1.77%) Virtual Team
11 59 (1.72%) Equities
12 56 (1.63%) Social Media
13 50 (1.45%) Video\Live Streaming
14 49 (1.43%) Hedge funds
15 48 (1.40%) Enterprise Software
16 44 (1.28%) Fixed Income
17 37 (1.08%) Embedded Systems
17 37 (1.08%) Over-the-Top Content
18 35 (1.02%) Market Risk
19 31 (0.90%) Online Games
Operating Systems
1 311 (9.05%) Linux
2 179 (5.21%) Android
3 142 (4.13%) Apple iOS
4 125 (3.64%) Unix
5 107 (3.11%) Windows
6 16 (0.47%) Embedded Linux
6 16 (0.47%) Mac OS X
7 5 (0.15%) Debian
7 5 (0.15%) Ubuntu
8 4 (0.12%) Mac OS
8 4 (0.12%) Mesosphere
9 3 (0.087%) Tizen
9 3 (0.087%) webOS
10 1 (0.029%) CentOS
10 1 (0.029%) Solaris
Processes & Methodologies
1 2,382 (69.28%) Agile Software Development
2 1,336 (38.86%) Microservices
3 1,166 (33.92%) BDD
4 1,117 (32.49%) Software Engineering
5 890 (25.89%) DevOps
6 747 (21.73%) Scrum
7 696 (20.24%) Test Automation
8 682 (19.84%) Continuous Integration
9 450 (13.09%) Mentoring
10 449 (13.06%) Fintech
11 430 (12.51%) Pair Programming
12 398 (11.58%) SOLID
13 395 (11.49%) OO
14 378 (10.99%) Unit Testing
15 359 (10.44%) Continuous Delivery
16 350 (10.18%) Front End Development
17 339 (9.86%) SDLC
18 311 (9.05%) Problem-Solving
19 292 (8.49%) MVC
20 288 (8.38%) Coaching
Programming Languages
1 1,508 (43.86%) JavaScript
2 1,354 (39.38%) Java
3 890 (25.89%) C#
4 766 (22.28%) SQL
5 718 (20.88%) Python
6 620 (18.03%) TypeScript
7 319 (9.28%) Java 8
8 278 (8.09%) Kotlin
9 225 (6.54%) Go
10 211 (6.14%) Scala
11 202 (5.88%) ES6
12 157 (4.57%) Ruby
13 124 (3.61%) PHP
14 90 (2.62%) C++
15 77 (2.24%) PowerShell
16 63 (1.83%) Bash Shell
17 55 (1.60%) Apple Swift
18 50 (1.45%) Clojure
18 50 (1.45%) Rust
19 46 (1.34%) T-SQL
Qualifications
1 221 (6.43%) Degree
2 109 (3.17%) Computer Science Degree
3 53 (1.54%) Security Cleared
4 47 (1.37%) SC Cleared
5 27 (0.79%) ISTQB
6 26 (0.76%) Master's Degree
7 23 (0.67%) SANS
8 17 (0.49%) ISTQB Foundation Certification
9 14 (0.41%) PhD
10 6 (0.17%) DBS Check
10 6 (0.17%) ISEB
11 5 (0.15%) Numerate Degree
12 4 (0.12%) Microsoft Certification
12 4 (0.12%) OSCE
12 4 (0.12%) OSCP
13 3 (0.087%) ISEB Practitioner
14 2 (0.058%) AWS Certification
14 2 (0.058%) CITP
14 2 (0.058%) ISTQB Advanced Certification
14 2 (0.058%) MBA
Quality Assurance & Compliance
1 322 (9.37%) QA
2 55 (1.60%) Accessibility
3 43 (1.25%) PSD2
4 35 (1.02%) GDPR
5 28 (0.81%) WCAG
6 19 (0.55%) EMIR
6 19 (0.55%) MiFID
7 9 (0.26%) PCI DSS
8 8 (0.23%) Data Quality
9 7 (0.20%) SLA
10 6 (0.17%) ISO/IEC 27001
11 5 (0.15%) ISO 20022
11 5 (0.15%) SOC 2
12 4 (0.12%) NIST
12 4 (0.12%) SOC 1
13 2 (0.058%) SEPA
13 2 (0.058%) WAI
14 1 (0.029%) HIPAA
System Software
1 1,073 (31.21%) Docker
2 16 (0.47%) Active Directory
3 11 (0.32%) Ceph
4 8 (0.23%) Postfix
5 6 (0.17%) Apache ZooKeeper
5 6 (0.17%) vSphere
6 5 (0.15%) Firmware
6 5 (0.15%) NFS
7 3 (0.087%) Virtual Machines
8 2 (0.058%) Platform Symphony
8 2 (0.058%) Varnish
8 2 (0.058%) VMware Infrastructure
9 1 (0.029%) HDFS
9 1 (0.029%) Hyper-V
9 1 (0.029%) KVM
9 1 (0.029%) LXC
9 1 (0.029%) Xen
Systems Management
1 865 (25.16%) Kubernetes
2 302 (8.78%) Terraform
3 87 (2.53%) Ansible
4 84 (2.44%) Prometheus
5 56 (1.63%) Grafana
6 46 (1.34%) Puppet
7 33 (0.96%) Opscode Chef
8 23 (0.67%) Graylog
9 19 (0.55%) Istio
10 18 (0.52%) Graphite
10 18 (0.52%) Opsgenie
11 13 (0.38%) Kibana
11 13 (0.38%) linkerd
12 12 (0.35%) Fortio
12 12 (0.35%) Kiali
13 10 (0.29%) Rancher
14 9 (0.26%) logstash
15 7 (0.20%) Consul
15 7 (0.20%) Docker Swarm
16 6 (0.17%) Galera Cluster
Vendors
1 239 (6.95%) Microsoft
2 234 (6.81%) Google
3 102 (2.97%) Oracle
4 44 (1.28%) Apple
5 34 (0.99%) Splunk
6 27 (0.79%) Sybase
7 22 (0.64%) Atlassian
8 20 (0.58%) New Relic
9 18 (0.52%) Databricks
9 18 (0.52%) IBM
9 18 (0.52%) Salesforce.com
10 15 (0.44%) YouTube
11 14 (0.41%) HP
12 13 (0.38%) QAD
12 13 (0.38%) Refinitiv
12 13 (0.38%) Xamarin
13 11 (0.32%) Cisco
14 10 (0.29%) Capita
14 10 (0.29%) Samsung
15 9 (0.26%) Netlify