Period
to 11 April 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 11 April 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
England > London
6 months to
11 Apr 2021
Same period 2020 Same period 2019
Rank 25 19 26
Rank change year-on-year -6 +7 -8
Permanent jobs citing TDD 2,540 4,385 4,902
As % of all permanent jobs advertised in London 8.25% 9.36% 8.02%
As % of the Processes & Methodologies category 8.81% 9.98% 8.65%
Number of salaries quoted 2,044 3,703 4,187
10th Percentile £47,500 £42,500 £37,750
25th Percentile £56,250 £52,500 £48,750
Median annual salary (50th Percentile) £72,500 £70,000 £65,000
Median % change year-on-year +3.57% +7.69% +4.00%
75th Percentile £86,000 £85,000 £82,500
90th Percentile £100,000 £99,750 £95,000
England median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +7.84%

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 28,842 43,937 56,692
As % of all permanent IT jobs advertised in London 93.66% 93.75% 92.79%
Number of salaries quoted 23,057 35,644 46,483
10th Percentile £42,500 £37,500 £36,250
25th Percentile £52,500 £50,000 £47,500
Median annual salary (50th Percentile) £70,000 £65,000 £62,500
Median % change year-on-year +7.69% +4.00% +4.17%
75th Percentile £87,500 £85,000 £81,250
90th Percentile £105,000 £101,250 £96,250
England median annual salary £55,000 £55,000 £52,500
% change year-on-year - +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 11 April 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 11 April 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 -9 476 £75,000 +3.45% 213
South London +10 94 £65,000 +8.33% 8
West London -25 50 £65,000 +4.00% 129
East London +8 10 £61,250 -18.33% 37
North London +27 1 £52,500 - 6
TDD
England

For the 6 months to 11 April 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 1,732 (68.19%) Agile Software Development
2 1,082 (42.60%) JavaScript
3 1,062 (41.81%) Java
4 965 (37.99%) BDD
5 943 (37.13%) Microservices
6 851 (33.50%) Docker
7 841 (33.11%) AWS
8 793 (31.22%) DevOps
9 782 (30.79%) Software Engineering
10 686 (27.01%) .NET
11 680 (26.77%) C#
12 671 (26.42%) React
13 600 (23.62%) Kubernetes
13 600 (23.62%) Azure
14 597 (23.50%) Python
15 571 (22.48%) SQL
16 550 (21.65%) Scrum
17 547 (21.54%) Finance
18 492 (19.37%) Test Automation
19 482 (18.98%) Node.js
20 478 (18.82%) Continuous Integration
21 463 (18.23%) .NET Core
22 428 (16.85%) Spring
23 390 (15.35%) Git (software)
24 379 (14.92%) CSS
25 369 (14.53%) AngularJS
26 362 (14.25%) Kafka
27 350 (13.78%) HTML
28 334 (13.15%) REST
29 325 (12.80%) OO

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
1 108 (4.25%) Elasticsearch
2 53 (2.09%) Confluence
3 37 (1.46%) Apache Spark
4 26 (1.02%) CMS
5 17 (0.67%) Apache
5 17 (0.67%) SharePoint
6 15 (0.59%) IIS
6 15 (0.59%) WebSphere
7 11 (0.43%) WordPress
8 10 (0.39%) Cloud Foundry
8 10 (0.39%) Umbraco
9 9 (0.35%) Drupal
10 6 (0.24%) OpenStack
10 6 (0.24%) Sitecore CMS
11 5 (0.20%) Apache Pulsar
11 5 (0.20%) Jetty
12 4 (0.16%) Apache Airflow
12 4 (0.16%) GlassFish
12 4 (0.16%) JBoss
12 4 (0.16%) nginx
Applications
1 28 (1.10%) Sketch
2 27 (1.06%) InVision
3 14 (0.55%) Chatbot
4 9 (0.35%) Adobe Creative Suite
5 6 (0.24%) Microsoft Excel
6 4 (0.16%) Microsoft Office
7 2 (0.079%) Figma
7 2 (0.079%) Spreadsheet
8 1 (0.039%) Microsoft Project
8 1 (0.039%) Zeplin
Business Applications
1 10 (0.39%) Dynamics CRM
2 4 (0.16%) IBM Operational Decision Manager
2 4 (0.16%) Payment Gateway
3 3 (0.12%) Magento
3 3 (0.12%) Shopify
4 2 (0.079%) Oracle BPM
5 1 (0.039%) Dynamics AX
5 1 (0.039%) Infor M3
5 1 (0.039%) Oracle Retail
Cloud Services
1 841 (33.11%) AWS
2 600 (23.62%) Azure
3 244 (9.61%) GCP
4 242 (9.53%) Serverless
5 132 (5.20%) SaaS
6 106 (4.17%) GitHub
7 102 (4.02%) AWS Lambda
8 76 (2.99%) Azure Functions
9 68 (2.68%) PaaS
10 60 (2.36%) AWS CloudFormation
11 48 (1.89%) Amazon EC2
12 46 (1.81%) Amazon SQS
13 38 (1.50%) Amazon S3
13 38 (1.50%) npm
14 37 (1.46%) Power Platform
15 31 (1.22%) Amazon ECS
16 30 (1.18%) Cloud Computing
17 28 (1.10%) Azure Active Directory
18 27 (1.06%) Amazon Alexa
19 26 (1.02%) NuGet
Communications & Networking
1 31 (1.22%) HTTP
2 19 (0.75%) Internet
3 12 (0.47%) Broadband
4 9 (0.35%) Skype
5 5 (0.20%) SSH
6 4 (0.16%) DNS
6 4 (0.16%) MQTT
7 3 (0.12%) Network Security
7 3 (0.12%) VPN
7 3 (0.12%) Wireless
8 2 (0.079%) Bluetooth
8 2 (0.079%) NFC
8 2 (0.079%) RFID
8 2 (0.079%) TCP/IP
8 2 (0.079%) Wi-Fi
9 1 (0.039%) AMQP
9 1 (0.039%) Intranet
9 1 (0.039%) RS-485
9 1 (0.039%) SSL
Database & Business Intelligence
1 273 (10.75%) NoSQL
2 232 (9.13%) SQL Server
3 202 (7.95%) PostgreSQL
4 179 (7.05%) Relational Database
5 144 (5.67%) MongoDB
6 139 (5.47%) MySQL
7 127 (5.00%) Redis
8 81 (3.19%) Big Data
9 64 (2.52%) Amazon DynamoDB
10 53 (2.09%) Hadoop
11 44 (1.73%) Cosmos DB
12 43 (1.69%) Apache Cassandra
13 39 (1.54%) Amazon RDS
14 36 (1.42%) Azure SQL Database
15 35 (1.38%) Blockchain
16 31 (1.22%) Hazelcast
17 28 (1.10%) SQL Server 2019
18 27 (1.06%) Power BI
19 22 (0.87%) Data Warehouse
20 20 (0.79%) Couchbase
Development Applications
1 390 (15.35%) Git (software)
2 265 (10.43%) Selenium
3 219 (8.62%) Jenkins
4 187 (7.36%) GitLab
5 158 (6.22%) Cucumber
6 142 (5.59%) Cypress.io
7 132 (5.20%) JIRA
8 119 (4.69%) TeamCity
9 113 (4.45%) webpack
10 95 (3.74%) Octopus Deploy
11 91 (3.58%) JUnit
12 80 (3.15%) Maven
13 55 (2.17%) Visual Studio
14 51 (2.01%) Appium
15 50 (1.97%) Storybook
16 47 (1.85%) Grunt
17 45 (1.77%) NUnit
17 45 (1.77%) SpecFlow
17 45 (1.77%) WebDriver
18 44 (1.73%) Jasmine
General
1 547 (21.54%) Finance
2 196 (7.72%) Banking
3 113 (4.45%) Games
4 102 (4.02%) Front Office
5 98 (3.86%) Retail
6 71 (2.80%) Investment Banking
7 52 (2.05%) Advertising
8 50 (1.97%) Marketing
9 41 (1.61%) Public Sector
10 36 (1.42%) Publishing
11 19 (0.75%) Financial Institution
12 18 (0.71%) Legal
12 18 (0.71%) Online Betting
13 17 (0.67%) Telecoms
14 14 (0.55%) Electronics
15 13 (0.51%) Automotive
15 13 (0.51%) Law
16 10 (0.39%) Local Government
17 9 (0.35%) Back Office
18 5 (0.20%) Housing Association
Job Titles
1 1,419 (55.87%) Developer
2 452 (17.80%) Java Developer
3 381 (15.00%) Senior Developer
4 378 (14.88%) Software Engineer
5 243 (9.57%) .NET Developer
6 189 (7.44%) Full Stack Developer
7 177 (6.97%) C# Developer
8 155 (6.10%) React Developer
9 143 (5.63%) Senior Software Engineer
10 137 (5.39%) Java Engineer
11 117 (4.61%) DevOps Engineer
12 115 (4.53%) Senior Java Developer
13 110 (4.33%) JavaScript Developer
14 105 (4.13%) C# .NET Developer
15 95 (3.74%) AWS Engineer
16 94 (3.70%) Front End Developer (Client-Side Developer)
17 87 (3.43%) Lead Developer
18 86 (3.39%) Backend Developer
19 79 (3.11%) Python Developer
20 74 (2.91%) Angular Developer
Libraries, Frameworks & Software Standards
1 686 (27.01%) .NET
2 671 (26.42%) React
3 482 (18.98%) Node.js
4 463 (18.23%) .NET Core
5 428 (16.85%) Spring
6 379 (14.92%) CSS
7 369 (14.53%) AngularJS
8 362 (14.25%) Kafka
9 350 (13.78%) HTML
10 334 (13.15%) REST
11 296 (11.65%) RESTful
12 267 (10.51%) Spring Boot
13 262 (10.31%) Web Services
14 260 (10.24%) .NET Framework
15 199 (7.83%) Redux
16 168 (6.61%) HTML5
17 150 (5.91%) CSS3
18 144 (5.67%) ASP.NET
19 124 (4.88%) Vue.js
20 114 (4.49%) GraphQL
Miscellaneous
1 221 (8.70%) Greenfield Project
2 162 (6.38%) Mobile App
3 139 (5.47%) User Experience
4 101 (3.98%) Algorithms
5 88 (3.46%) Self-Motivation
6 66 (2.60%) Cloud Native
7 65 (2.56%) Equities
8 59 (2.32%) Analytical Skills
9 56 (2.20%) Data Structures
10 51 (2.01%) Fixed Income
11 39 (1.54%) Derivative
12 35 (1.38%) Online Games
13 34 (1.34%) Over-the-Top Content
14 31 (1.22%) Foreign Exchange (FX)
15 30 (1.18%) Blog
16 25 (0.98%) Social Network
17 24 (0.94%) Hedge funds
17 24 (0.94%) Video\Live Streaming
18 22 (0.87%) Enterprise Software
19 21 (0.83%) Media Streaming
Operating Systems
1 265 (10.43%) Linux
2 90 (3.54%) Android
3 84 (3.31%) Windows
4 77 (3.03%) Apple iOS
5 74 (2.91%) Unix
6 7 (0.28%) Embedded Linux
7 6 (0.24%) Windows Server
7 6 (0.24%) Windows Server 2008
8 5 (0.20%) Debian
9 4 (0.16%) VMS
10 3 (0.12%) Mac OS
10 3 (0.12%) Ubuntu
11 1 (0.039%) CentOS
Processes & Methodologies
1 1,732 (68.19%) Agile Software Development
2 965 (37.99%) BDD
3 943 (37.13%) Microservices
4 793 (31.22%) DevOps
5 782 (30.79%) Software Engineering
6 550 (21.65%) Scrum
7 492 (19.37%) Test Automation
8 478 (18.82%) Continuous Integration
9 325 (12.80%) OO
10 312 (12.28%) Pair Programming
11 308 (12.13%) Fintech
12 262 (10.31%) MVC
13 260 (10.24%) Mentoring
14 248 (9.76%) SOLID
15 237 (9.33%) Unit Testing
16 234 (9.21%) Continuous Delivery
17 206 (8.11%) SDLC
18 202 (7.95%) Front End Development
19 186 (7.32%) Problem-Solving
20 167 (6.57%) Web Development
Programming Languages
1 1,082 (42.60%) JavaScript
2 1,062 (41.81%) Java
3 680 (26.77%) C#
4 597 (23.50%) Python
5 571 (22.48%) SQL
6 287 (11.30%) TypeScript
7 255 (10.04%) Java 8
8 212 (8.35%) Go
9 186 (7.32%) Kotlin
10 161 (6.34%) Scala
11 104 (4.09%) Ruby
12 90 (3.54%) PHP
13 86 (3.39%) ES6
14 78 (3.07%) C++
15 52 (2.05%) T-SQL
16 49 (1.93%) Bash Shell
17 38 (1.50%) PowerShell
18 31 (1.22%) ES7
19 30 (1.18%) Shell Script
20 26 (1.02%) Groovy
Qualifications
1 145 (5.71%) Degree
2 81 (3.19%) Security Cleared
3 72 (2.83%) SC Cleared
4 49 (1.93%) Computer Science Degree
5 18 (0.71%) SANS
6 16 (0.63%) ISTQB
7 12 (0.47%) Master's Degree
8 11 (0.43%) PhD
9 10 (0.39%) OSCE
9 10 (0.39%) OSCP
10 7 (0.28%) DV Cleared
11 6 (0.24%) ISTQB Foundation Certification
12 5 (0.20%) DBS Check
13 4 (0.16%) ISEB
13 4 (0.16%) Microsoft Certification
13 4 (0.16%) Numerate Degree
14 2 (0.079%) APMG
14 2 (0.079%) AWS Certification
14 2 (0.079%) ISEB Practitioner
15 1 (0.039%) PMI Certification
Quality Assurance & Compliance
1 205 (8.07%) QA
2 29 (1.14%) GDPR
3 19 (0.75%) WCAG
4 14 (0.55%) PCI DSS
5 11 (0.43%) ISO/IEC 27001
6 10 (0.39%) NIST
6 10 (0.39%) SOC 1
6 10 (0.39%) SOC 2
7 8 (0.31%) PSD2
8 3 (0.12%) ISO 20022
9 2 (0.079%) EMIR
9 2 (0.079%) MiFID
10 1 (0.039%) Data Quality
10 1 (0.039%) SEPA
System Software
1 851 (33.50%) Docker
2 31 (1.22%) Active Directory
3 8 (0.31%) Firmware
3 8 (0.31%) Postfix
4 2 (0.079%) Apache ZooKeeper
4 2 (0.079%) Ceph
4 2 (0.079%) Platform Symphony
4 2 (0.079%) VMware Infrastructure
5 1 (0.039%) HDFS
5 1 (0.039%) Hyper-V
5 1 (0.039%) KVM
5 1 (0.039%) LXC
5 1 (0.039%) NFS
5 1 (0.039%) Virtual Machines
5 1 (0.039%) vSphere
5 1 (0.039%) Xen
Systems Management
1 600 (23.62%) Kubernetes
2 230 (9.06%) Terraform
3 121 (4.76%) Ansible
4 70 (2.76%) Puppet
5 31 (1.22%) Opscode Chef
6 29 (1.14%) Istio
7 26 (1.02%) Prometheus
8 21 (0.83%) Fortio
8 21 (0.83%) Kiali
9 14 (0.55%) Kibana
10 10 (0.39%) Consul
10 10 (0.39%) linkerd
11 7 (0.28%) Grafana
12 6 (0.24%) Rancher
13 4 (0.16%) Marathon
13 4 (0.16%) Mesos
14 3 (0.12%) MIIS
14 3 (0.12%) Salt
15 2 (0.079%) Icinga
15 2 (0.079%) logstash
Vendors
1 188 (7.40%) Microsoft
2 117 (4.61%) Google
3 68 (2.68%) Oracle
4 31 (1.22%) Xamarin
5 20 (0.79%) Salesforce.com
6 19 (0.75%) Splunk
7 13 (0.51%) IBM
8 12 (0.47%) Atlassian
9 11 (0.43%) Adobe
9 11 (0.43%) New Relic
10 10 (0.39%) Solace
11 9 (0.35%) Cisco
11 9 (0.35%) Databricks
12 8 (0.31%) Facebook
13 7 (0.28%) Talend
14 6 (0.24%) MuleSoft
14 6 (0.24%) Sitecore
15 5 (0.20%) Apple
15 5 (0.20%) hybris
15 5 (0.20%) Salesforce Marketing Cloud