Period
to 1 August 2021

The following table provides summary statistics for permanent job vacancies advertised in Central 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 1 August 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
London > Central London
6 months to
1 Aug 2021
Same period 2020 Same period 2019
Rank 40 22 31
Rank change year-on-year -18 +9 -8
Permanent jobs citing TDD 419 616 1,014
As % of all permanent jobs advertised in Central London 6.33% 9.51% 7.75%
As % of the Processes & Methodologies category 6.68% 10.09% 8.29%
Number of salaries quoted 394 581 960
10th Percentile £55,375 £50,000 £46,250
25th Percentile £65,000 £58,750 £56,250
Median annual salary (50th Percentile) £78,750 £75,000 £70,000
Median % change year-on-year +5.00% +7.14% +3.70%
75th Percentile £93,750 £87,500 £82,500
90th Percentile £102,500 £96,250 £92,500
London median annual salary £75,000 £70,000 £67,500
% change year-on-year +7.14% +3.70% +3.85%

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 Central London with a requirement for process or methodology skills.

All Process and Methodology Skills
Central London
Permanent vacancies with a requirement for process or methodology skills 6,276 6,107 12,236
As % of all permanent IT jobs advertised in Central London 94.88% 94.30% 93.51%
Number of salaries quoted 5,618 5,377 10,951
10th Percentile £42,500 £42,500 £37,500
25th Percentile £53,750 £52,500 £49,977
Median annual salary (50th Percentile) £70,000 £70,000 £65,000
Median % change year-on-year - +7.69% +4.00%
75th Percentile £90,000 £85,000 £82,500
90th Percentile £105,000 £100,000 £96,250
London median annual salary £70,000 £68,346 £65,000
% change year-on-year +2.42% +5.15% +8.33%

TDD
Job Vacancy Trend in Central London

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

Job vacancy trend for TDD in Central London

TDD
Salary Trend in Central London

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

Salary trend for TDD in Central London

TDD
Salary Histogram in Central London

Salary distribution for jobs citing TDD in Central London over the 6 months to 1 August 2021.

Salary histogram for TDD in Central London

TDD
Job Locations in Central London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the Central London region over the 6 months to 1 August 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
City of London -19 337 £77,500 +6.90% 251
West End of London +3 22 £82,500 +10.00% 2
City of Westminster -6 2 £82,500 +57.14%
Camden +3 1 £70,000 +3.70% 2
TDD
London

For the 6 months to 1 August 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 Central London region with a requirement for TDD.

1 320 (76.37%) Agile Software Development
2 176 (42.00%) Java
3 171 (40.81%) Microservices
4 156 (37.23%) BDD
5 151 (36.04%) DevOps
6 149 (35.56%) Software Engineering
7 143 (34.13%) C#
7 143 (34.13%) SQL
8 136 (32.46%) .NET
9 123 (29.36%) JavaScript
10 115 (27.45%) Finance
11 109 (26.01%) AWS
12 99 (23.63%) Docker
13 97 (23.15%) Continuous Integration
14 96 (22.91%) React
15 93 (22.20%) Azure
16 87 (20.76%) Spring
17 82 (19.57%) Scrum
18 81 (19.33%) Kubernetes
18 81 (19.33%) Fintech
19 77 (18.38%) Web Services
20 75 (17.90%) Social Skills
21 74 (17.66%) .NET Core
22 70 (16.71%) SOLID
22 70 (16.71%) Full Stack Development
23 68 (16.23%) Java 8
24 67 (15.99%) Spring Boot
24 67 (15.99%) AngularJS
25 66 (15.75%) HTML
26 65 (15.51%) Test Automation

TDD
Co-occurring IT Skills in Central 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 18 (4.30%) Elasticsearch
2 14 (3.34%) Apache Spark
3 11 (2.63%) Apache Solr
3 11 (2.63%) CMS
3 11 (2.63%) Drupal
4 7 (1.67%) Confluence
5 6 (1.43%) IIS
6 5 (1.19%) SharePoint
7 4 (0.95%) Tomcat
8 3 (0.72%) GlassFish
8 3 (0.72%) JBoss
8 3 (0.72%) OpenStack
8 3 (0.72%) WebSphere
9 2 (0.48%) Cloud Foundry
9 2 (0.48%) Oracle SOA Suite
9 2 (0.48%) SAS
10 1 (0.24%) Apache
10 1 (0.24%) Apache Airflow
10 1 (0.24%) Oracle Coherence
Business Applications
1 3 (0.72%) Dynamics CRM
1 3 (0.72%) IBM Operational Decision Manager
2 1 (0.24%) Salesforce.com CRM
Cloud Services
1 109 (26.01%) AWS
2 93 (22.20%) Azure
3 40 (9.55%) Serverless
4 34 (8.11%) SaaS
5 28 (6.68%) GCP
6 23 (5.49%) Azure Functions
7 17 (4.06%) Azure Service Bus
8 16 (3.82%) Azure App Service
8 16 (3.82%) Azure Event Grid
8 16 (3.82%) Azure Service Fabric
8 16 (3.82%) NuGet
9 13 (3.10%) AWS Lambda
10 9 (2.15%) PaaS
11 7 (1.67%) Amazon EC2
11 7 (1.67%) Azure Cosmos DB
11 7 (1.67%) npm
12 6 (1.43%) Amazon ECS
12 6 (1.43%) Amazon EKS
12 6 (1.43%) BrowserStack
12 6 (1.43%) Power Platform
Communications & Networking
1 5 (1.19%) HTTP
2 4 (0.95%) AMQP
3 1 (0.24%) Network Security
3 1 (0.24%) VoIP
Database & Business Intelligence
1 61 (14.56%) NoSQL
1 61 (14.56%) SQL Server
2 33 (7.88%) MongoDB
3 22 (5.25%) Azure SQL Database
4 20 (4.77%) Apache Cassandra
5 19 (4.53%) MySQL
5 19 (4.53%) PostgreSQL
6 17 (4.06%) Big Data
6 17 (4.06%) Hadoop
7 16 (3.82%) Amazon DynamoDB
8 13 (3.10%) Redis
9 10 (2.39%) Data Warehouse
10 8 (1.91%) Relational Database
11 6 (1.43%) HBase
11 6 (1.43%) Power BI
12 4 (0.95%) SQL Server Integration Services
12 4 (0.95%) SQL Server Reporting Services
13 3 (0.72%) Data Lake
13 3 (0.72%) MariaDB
14 2 (0.48%) Amazon Athena
Development Applications
1 47 (11.22%) Git (software)
2 34 (8.11%) Selenium
3 32 (7.64%) NUnit
4 28 (6.68%) Jenkins
5 26 (6.21%) TeamCity
6 25 (5.97%) JIRA
7 17 (4.06%) Cucumber
8 16 (3.82%) webpack
9 15 (3.58%) Octopus Deploy
10 14 (3.34%) JUnit
11 13 (3.10%) Rhino Mocks
12 12 (2.86%) Moq
12 12 (2.86%) SpecFlow
12 12 (2.86%) Visual Studio
12 12 (2.86%) WebDriver
13 10 (2.39%) Maven
14 8 (1.91%) gulp
15 7 (1.67%) Atlassian Bamboo
15 7 (1.67%) Cypress.io
15 7 (1.67%) TestRail
General
1 115 (27.45%) Finance
2 75 (17.90%) Social Skills
3 42 (10.02%) Banking
4 24 (5.73%) Retail
5 18 (4.30%) Front Office
6 14 (3.34%) Analytical Skills
7 12 (2.86%) Investment Banking
8 5 (1.19%) Presentation Skills
9 4 (0.95%) Electronics
9 4 (0.95%) Financial Institution
9 4 (0.95%) Games
9 4 (0.95%) Marketing
10 3 (0.72%) Inclusion and Diversity
10 3 (0.72%) Organisational Skills
10 3 (0.72%) Public Speaking
10 3 (0.72%) Telecoms
11 2 (0.48%) Publishing
12 1 (0.24%) Advertising
12 1 (0.24%) Law
12 1 (0.24%) Public Sector
Job Titles
1 228 (54.42%) Developer
2 88 (21.00%) Java Developer
3 84 (20.05%) Senior Developer
4 62 (14.80%) .NET Developer
4 62 (14.80%) Software Engineer
5 46 (10.98%) C# Developer
6 41 (9.79%) C# .NET Developer
7 40 (9.55%) Lead Developer
8 30 (7.16%) Java Engineer
9 26 (6.21%) Senior Software Engineer
10 24 (5.73%) Senior .NET Developer
11 21 (5.01%) Java Developer - Fintech
11 21 (5.01%) Software Developer
12 20 (4.77%) Senior Java Developer
13 19 (4.53%) Architect
13 19 (4.53%) Senior C# .NET Developer
13 19 (4.53%) Senior C# Developer
14 18 (4.30%) Lead Java Developer
15 17 (4.06%) Full Stack Developer
15 17 (4.06%) Senior Software Developer
Libraries, Frameworks & Software Standards
1 136 (32.46%) .NET
2 96 (22.91%) React
3 87 (20.76%) Spring
4 77 (18.38%) Web Services
5 74 (17.66%) .NET Core
6 67 (15.99%) AngularJS
6 67 (15.99%) Spring Boot
7 66 (15.75%) HTML
8 63 (15.04%) CSS
8 63 (15.04%) Node.js
9 60 (14.32%) REST
10 56 (13.37%) Kafka
11 31 (7.40%) ASP.NET
11 31 (7.40%) ASP.NET Web API
12 29 (6.92%) RESTful
13 27 (6.44%) jQuery
14 25 (5.97%) .NET Framework
14 25 (5.97%) HTML5
15 21 (5.01%) JSON
16 17 (4.06%) RabbitMQ
Miscellaneous
1 29 (6.92%) Self-Motivation
2 22 (5.25%) Greenfield Project
3 19 (4.53%) Enterprise Software
4 18 (4.30%) Mobile App
5 17 (4.06%) Legacy Systems
6 16 (3.82%) Data Structures
7 15 (3.58%) Algorithms
7 15 (3.58%) Legacy Code
8 14 (3.34%) User Experience
9 13 (3.10%) Hybrid Cloud
10 12 (2.86%) Video\Live Streaming
11 8 (1.91%) Hedge funds
12 7 (1.67%) Derivative
13 6 (1.43%) Foreign Exchange (FX)
13 6 (1.43%) Social Media
14 4 (0.95%) Cloud Native
14 4 (0.95%) Data Centre
14 4 (0.95%) iPad
15 3 (0.72%) Private Cloud
15 3 (0.72%) Public Cloud
Operating Systems
1 27 (6.44%) Linux
2 8 (1.91%) Unix
3 2 (0.48%) Android
3 2 (0.48%) Apple iOS
3 2 (0.48%) Mac OS X
4 1 (0.24%) Windows
Processes & Methodologies
1 320 (76.37%) Agile Software Development
2 171 (40.81%) Microservices
3 156 (37.23%) BDD
4 151 (36.04%) DevOps
5 149 (35.56%) Software Engineering
6 97 (23.15%) Continuous Integration
7 82 (19.57%) Scrum
8 81 (19.33%) Fintech
9 70 (16.71%) Full Stack Development
9 70 (16.71%) SOLID
10 65 (15.51%) Test Automation
11 62 (14.80%) Continuous Delivery
12 59 (14.08%) Mentoring
13 58 (13.84%) OO
14 50 (11.93%) SDLC
15 45 (10.74%) Multithreading
16 43 (10.26%) Software Testing
17 40 (9.55%) Analytics
18 32 (7.64%) Coaching
18 32 (7.64%) MVC
Programming Languages
1 176 (42.00%) Java
2 143 (34.13%) C#
2 143 (34.13%) SQL
3 123 (29.36%) JavaScript
4 68 (16.23%) Java 8
5 55 (13.13%) TypeScript
6 39 (9.31%) Python
7 36 (8.59%) Kotlin
8 26 (6.21%) Java 11
9 18 (4.30%) T-SQL
10 16 (3.82%) ES6
10 16 (3.82%) PHP
11 14 (3.34%) Scala
12 10 (2.39%) Shell Script
13 9 (2.15%) Go
14 8 (1.91%) C++
15 7 (1.67%) PowerShell
15 7 (1.67%) Ruby
16 6 (1.43%) Groovy
17 3 (0.72%) PL/SQL
Qualifications
1 20 (4.77%) Degree
2 10 (2.39%) ISTQB
3 4 (0.95%) ISTQB Foundation Certification
4 3 (0.72%) Computer Science Degree
5 2 (0.48%) ISTQB Advanced Certification
6 1 (0.24%) AWS Certification
6 1 (0.24%) DBS Check
6 1 (0.24%) SANS
Quality Assurance & Compliance
1 48 (11.46%) QA
2 6 (1.43%) Accessibility
3 4 (0.95%) GDPR
4 3 (0.72%) ISO 20022
5 1 (0.24%) Data Quality
5 1 (0.24%) ISO/IEC 27001
5 1 (0.24%) SEPA
System Software
1 99 (23.63%) Docker
2 3 (0.72%) Apache ZooKeeper
3 1 (0.24%) Active Directory
3 1 (0.24%) HDFS
Systems Management
1 81 (19.33%) Kubernetes
2 9 (2.15%) Terraform
3 6 (1.43%) Opscode Chef
4 5 (1.19%) Kibana
5 4 (0.95%) Ansible
5 4 (0.95%) Puppet
6 2 (0.48%) Grafana
6 2 (0.48%) logstash
7 1 (0.24%) MIIS
7 1 (0.24%) Prometheus
Vendors
1 25 (5.97%) Microsoft
2 24 (5.73%) Oracle
3 8 (1.91%) IBM
4 7 (1.67%) Google
5 3 (0.72%) Salesforce.com
6 2 (0.48%) Databricks
6 2 (0.48%) New Relic
7 1 (0.24%) Actuate
7 1 (0.24%) Atlassian
7 1 (0.24%) Cloudera
7 1 (0.24%) Cognos
7 1 (0.24%) Dynatrace
7 1 (0.24%) Facebook
7 1 (0.24%) HP
7 1 (0.24%) Murex
7 1 (0.24%) Netezza
7 1 (0.24%) Teradata
7 1 (0.24%) TIBCO
7 1 (0.24%) VMware