Period
to 6 April 2020

The following table provides summary statistics for contract job vacancies advertised in Central London with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 6 April 2020 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
London > Central London
6 months to
6 Apr 2020
Same period 2019 Same period 2018
Rank 15 15 10
Rank change year-on-year 0 -5 0
Contract jobs citing TDD 423 963 1,014
As % of all contract jobs advertised in Central London 8.07% 10.71% 10.99%
As % of the Processes & Methodologies category 9.25% 11.92% 12.32%
Number of daily rates quoted 376 846 897
Median daily rate £550 £550 £525
Median daily rate % change year-on-year - +4.76% +5.00%
10th Percentile £413 £422 £413
90th Percentile £688 £650 £669
London median daily rate £550 £533 £525
% change year-on-year +3.29% +1.43% +7.69%
Number of hourly rates quoted 3 1 0
Median hourly rate £55.00 £60.00 -
Median hourly rate % change year-on-year -8.33% - -
London median hourly rate £61.50 £35.00 £45.00
% change year-on-year +75.71% -22.22% -4.26%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Central London with a requirement for process or methodology skills.

All Process and Methodology Skills
Central London
Contract vacancies with a requirement for process or methodology skills 4,574 8,081 8,230
As % of all contract IT jobs advertised in Central London 87.26% 89.86% 89.19%
Number of daily rates quoted 3,302 6,118 6,429
Median daily rate £510 £525 £500
Median daily rate % change year-on-year -2.86% +5.00% +5.26%
10th Percentile £319 £325 £325
90th Percentile £675 £675 £688
London median daily rate £520 £513 £500
% change year-on-year +1.46% +2.50% +5.26%
Number of hourly rates quoted 79 70 111
Median hourly rate £29.00 £21.34 £21.50
Median hourly rate % change year-on-year +35.90% -0.74% +13.16%
10th Percentile £12.48 £12.76 £12.49
90th Percentile £52.25 £42.10 £48.25
Median hourly rate £35.00 £26.50 £24.00
% change year-on-year +32.08% +10.42% -4.00%

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
Contractor Daily Rate Trend in Central London

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

Daily rate trend for TDD in Central London

TDD
Daily Rate Histogram in Central London

Daily rate distribution for jobs citing TDD in Central London over the 6 months to 6 April 2020.

Daily rate histogram for TDD in Central London

TDD
Contractor Hourly Rate Trend in Central London

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

Hourly rate trend for TDD in Central London

TDD
Contract Job Locations in Central London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Central London region over the 6 months to 6 April 2020. 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -1 359 £573 +4.09% 182
City of Westminster -7 14 £550 -
West End of London -2 7 £413 -25.00%
Southwark -6 1 £400 -27.27%
TDD
London

For the 6 months to 6 April 2020, IT contractor 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 contract job ads across the Central London region with a requirement for TDD.

1 310 (73.29%) Agile Software Development
2 177 (41.84%) Java
3 146 (34.52%) BDD
4 120 (28.37%) Microservices
5 115 (27.19%) JavaScript
6 81 (19.15%) Spring
7 72 (17.02%) HTML
7 72 (17.02%) SQL
8 70 (16.55%) Scrum
8 70 (16.55%) Azure
9 69 (16.31%) DevOps
9 69 (16.31%) CSS
10 64 (15.13%) C#
10 64 (15.13%) React
10 64 (15.13%) AngularJS
11 63 (14.89%) Pair Programming
11 63 (14.89%) Continuous Integration
12 62 (14.66%) AWS
13 61 (14.42%) .NET
14 56 (13.24%) Docker
15 53 (12.53%) Finance
16 51 (12.06%) Git (software)
17 49 (11.58%) Test Automation
17 49 (11.58%) Python
18 48 (11.35%) Greenfield Project
19 47 (11.11%) Software Engineering
20 46 (10.87%) Kubernetes
21 45 (10.64%) Kafka
22 44 (10.40%) Node.js
23 43 (10.17%) RESTful

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 25 (5.91%) Elasticsearch
2 16 (3.78%) Apache Spark
3 15 (3.55%) Confluence
4 6 (1.42%) CMS
5 5 (1.18%) Adobe Experience Manager
5 5 (1.18%) IIS
6 4 (0.95%) WordPress
7 2 (0.47%) Apache
7 2 (0.47%) Cloud Foundry
7 2 (0.47%) SharePoint
8 1 (0.24%) Anypoint
8 1 (0.24%) Apache Airflow
8 1 (0.24%) Drupal
8 1 (0.24%) EPiServer
8 1 (0.24%) JBoss
8 1 (0.24%) Jupyter
8 1 (0.24%) Mendix
8 1 (0.24%) OpenStack
8 1 (0.24%) WebSphere
Applications
1 3 (0.71%) Zeplin
2 1 (0.24%) Photoshop
2 1 (0.24%) Sketch
Business Applications
1 1 (0.24%) FastStats
1 1 (0.24%) Magento
1 1 (0.24%) Shopify
Cloud Services
1 70 (16.55%) Azure
2 62 (14.66%) AWS
3 23 (5.44%) GCP
4 15 (3.55%) GitHub
5 8 (1.89%) PaaS
6 6 (1.42%) SaaS
6 6 (1.42%) Serverless
7 5 (1.18%) AWS Lambda
8 3 (0.71%) Amazon EC2
8 3 (0.71%) Azure Active Directory
8 3 (0.71%) Cloud Computing
8 3 (0.71%) IaaS
9 2 (0.47%) Amazon S3
9 2 (0.47%) Firebase
9 2 (0.47%) Google App Engine
9 2 (0.47%) npm
9 2 (0.47%) OpenShift
9 2 (0.47%) Power Platform
10 1 (0.24%) Amazon ECS
10 1 (0.24%) AWS IoT
Communications & Networking
1 9 (2.13%) HTTP
2 5 (1.18%) DNS
2 5 (1.18%) FTP
2 5 (1.18%) SSL
2 5 (1.18%) TCP/IP
3 2 (0.47%) Multicast
3 2 (0.47%) PuTTY
4 1 (0.24%) Firewall
4 1 (0.24%) Internet
4 1 (0.24%) Intrusion Detection
4 1 (0.24%) MPLS
4 1 (0.24%) Skype
4 1 (0.24%) Software-Defined Networking
Database & Business Intelligence
1 34 (8.04%) SQL Server
2 23 (5.44%) NoSQL
3 21 (4.96%) MySQL
4 19 (4.49%) MongoDB
4 19 (4.49%) PostgreSQL
5 15 (3.55%) Relational Database
6 13 (3.07%) Redis
7 11 (2.60%) Azure SQL Database
8 8 (1.89%) Hadoop
8 8 (1.89%) HBase
9 7 (1.65%) Big Data
9 7 (1.65%) RDBMS
10 6 (1.42%) Apache Cassandra
10 6 (1.42%) Apache Hive
10 6 (1.42%) Oracle Database
11 5 (1.18%) Amazon DynamoDB
11 5 (1.18%) Cosmos DB
11 5 (1.18%) Jackrabbit
11 5 (1.18%) SQL Server Integration Services
12 4 (0.95%) Data Warehouse
Development Applications
1 51 (12.06%) Git (software)
2 35 (8.27%) Jenkins
3 31 (7.33%) JIRA
4 15 (3.55%) JUnit
4 15 (3.55%) Selenium
5 12 (2.84%) Team Foundation Server
6 10 (2.36%) SpecFlow
7 9 (2.13%) Cucumber
7 9 (2.13%) GitLab
7 9 (2.13%) RSpec
7 9 (2.13%) Travis CI
8 8 (1.89%) Gradle
8 8 (1.89%) Visual Studio
9 7 (1.65%) Mockito
9 7 (1.65%) Moq
9 7 (1.65%) webpack
10 6 (1.42%) CircleCI
10 6 (1.42%) JConsole
10 6 (1.42%) JProfiler
10 6 (1.42%) VisualVM
General
1 53 (12.53%) Finance
2 27 (6.38%) Banking
3 26 (6.15%) Front Office
4 16 (3.78%) Investment Banking
5 12 (2.84%) Retail
6 9 (2.13%) Marketing
7 8 (1.89%) Public Sector
8 7 (1.65%) Games
9 6 (1.42%) Telecoms
10 4 (0.95%) Financial Institution
10 4 (0.95%) Publishing
10 4 (0.95%) Retail Banking
11 3 (0.71%) Advertising
11 3 (0.71%) Automotive
11 3 (0.71%) Electronics
11 3 (0.71%) Law
12 2 (0.47%) Manufacturing
13 1 (0.24%) Back Office
13 1 (0.24%) Legal
Job Titles
1 323 (76.36%) Developer
2 118 (27.90%) Java Developer
3 41 (9.69%) Senior Developer
4 30 (7.09%) React Developer
5 29 (6.86%) .NET Developer
6 26 (6.15%) AWS Developer
6 26 (6.15%) Full Stack Developer
7 23 (5.44%) C# Developer
8 16 (3.78%) Angular Developer
9 15 (3.55%) Scala Developer
10 14 (3.31%) Agile Developer
10 14 (3.31%) Architect
10 14 (3.31%) Python Developer
10 14 (3.31%) Ruby on Rails Developer
11 12 (2.84%) Azure Developer
11 12 (2.84%) Front End Developer (Client-Side Developer)
11 12 (2.84%) Python Engineer
11 12 (2.84%) Software Engineer
12 11 (2.60%) Agile Java Developer
12 11 (2.60%) Java Engineer
Libraries, Frameworks & Software Standards
1 81 (19.15%) Spring
2 72 (17.02%) HTML
3 69 (16.31%) CSS
4 64 (15.13%) AngularJS
4 64 (15.13%) React
5 61 (14.42%) .NET
6 45 (10.64%) Kafka
7 44 (10.40%) Node.js
8 43 (10.17%) RESTful
9 37 (8.75%) REST
10 33 (7.80%) HTML5
11 31 (7.33%) Spring Boot
12 30 (7.09%) ASP.NET
12 30 (7.09%) Redux
12 30 (7.09%) Web Services
13 22 (5.20%) Spring Cloud
14 21 (4.96%) Ruby on Rails
15 19 (4.49%) CSS3
16 16 (3.78%) ASP.NET MVC
16 16 (3.78%) GraphQL
Miscellaneous
1 48 (11.35%) Greenfield Project
2 18 (4.26%) User Experience
3 15 (3.55%) Enterprise Software
4 14 (3.31%) Analytical Skills
5 11 (2.60%) Fixed Income
6 9 (2.13%) Foreign Exchange (FX)
7 8 (1.89%) Algorithms
8 6 (1.42%) N-Tier
9 5 (1.18%) Equities
9 5 (1.18%) Linux Command Line
9 5 (1.18%) Public Cloud
10 4 (0.95%) Credit Risk
10 4 (0.95%) Mobile App
10 4 (0.95%) Video\Live Streaming
10 4 (0.95%) Virtual Team
11 3 (0.71%) BYOD
11 3 (0.71%) Derivative
11 3 (0.71%) Over-the-Top Content
12 2 (0.47%) Data Structures
12 2 (0.47%) Hedge funds
Operating Systems
1 21 (4.96%) Linux
2 13 (3.07%) Unix
3 11 (2.60%) Android
3 11 (2.60%) Apple iOS
4 4 (0.95%) Mac OS X
5 3 (0.71%) Windows
6 1 (0.24%) Embedded Linux
6 1 (0.24%) Mac OS
Processes & Methodologies
1 310 (73.29%) Agile Software Development
2 146 (34.52%) BDD
3 120 (28.37%) Microservices
4 70 (16.55%) Scrum
5 69 (16.31%) DevOps
6 63 (14.89%) Continuous Integration
6 63 (14.89%) Pair Programming
7 49 (11.58%) Test Automation
8 47 (11.11%) Software Engineering
9 37 (8.75%) Kanban
10 35 (8.27%) Continuous Delivery
11 33 (7.80%) Front End Development
12 31 (7.33%) E-Commerce
13 28 (6.62%) Fintech
13 28 (6.62%) Unit Testing
14 27 (6.38%) Continuous Improvement
15 23 (5.44%) MVC
16 21 (4.96%) Functional Programming
17 20 (4.73%) Low Latency
17 20 (4.73%) Multithreading
Programming Languages
1 177 (41.84%) Java
2 115 (27.19%) JavaScript
3 72 (17.02%) SQL
4 64 (15.13%) C#
5 49 (11.58%) Python
6 42 (9.93%) Java 8
7 37 (8.75%) TypeScript
8 31 (7.33%) Ruby
9 29 (6.86%) Scala
10 21 (4.96%) Kotlin
11 18 (4.26%) PHP
12 14 (3.31%) Go
13 12 (2.84%) ES6
14 10 (2.36%) T-SQL
15 7 (1.65%) R
16 5 (1.18%) Apple Swift
17 4 (0.95%) C
17 4 (0.95%) C++
17 4 (0.95%) Groovy
18 3 (0.71%) VB.NET
Qualifications
1 20 (4.73%) Degree
2 15 (3.55%) Security Cleared
3 9 (2.13%) Computer Science Degree
3 9 (2.13%) SC Cleared
4 8 (1.89%) Master's Degree
5 4 (0.95%) ISTQB
6 3 (0.71%) BC Cleared
7 2 (0.47%) BPSS Clearance
7 2 (0.47%) DBS Check
7 2 (0.47%) ISEB
8 1 (0.24%) ISTQB Advanced Certification
8 1 (0.24%) ISTQB Foundation Certification
8 1 (0.24%) Numerate Degree
Quality Assurance & Compliance
1 28 (6.62%) QA
2 2 (0.47%) Data Quality
2 2 (0.47%) GDPR
3 1 (0.24%) EMIR
3 1 (0.24%) MiFID
System Software
1 56 (13.24%) Docker
2 7 (1.65%) HDFS
3 4 (0.95%) Active Directory
4 2 (0.47%) VMware Infrastructure
4 2 (0.47%) vSphere
Systems Management
1 46 (10.87%) Kubernetes
2 14 (3.31%) Terraform
3 9 (2.13%) Ansible
4 7 (1.65%) Hadoop YARN
5 5 (1.18%) Docker Swarm
6 4 (0.95%) MIIS
7 2 (0.47%) Grafana
7 2 (0.47%) Prometheus
8 1 (0.24%) Graphite
8 1 (0.24%) Kibana
8 1 (0.24%) Nagios
8 1 (0.24%) Puppet
Vendors
1 22 (5.20%) Microsoft
2 19 (4.49%) Google
3 14 (3.31%) Atlassian
4 9 (2.13%) Oracle
5 5 (1.18%) Adobe
5 5 (1.18%) CA
5 5 (1.18%) CA Agile Central
5 5 (1.18%) Salesforce.com
6 4 (0.95%) Facebook
7 3 (0.71%) Tableau
8 2 (0.47%) Databricks
8 2 (0.47%) GoCardless
8 2 (0.47%) IBM
8 2 (0.47%) SAP
8 2 (0.47%) VMware
8 2 (0.47%) Zuora
9 1 (0.24%) DevExpress
9 1 (0.24%) Red Hat
9 1 (0.24%) Remedy
9 1 (0.24%) TOWER Software