Period
to 18 January 2021

The following table provides summary statistics for contract job vacancies advertised in the City of 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 18 January 2021 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)
Central London > City of London
6 months to
18 Jan 2021
Same period 2020 Same period 2019
Rank 14 15 9
Rank change year-on-year +1 -6 0
Contract jobs citing TDD 190 446 828
As % of all contract jobs advertised in the City of London 9.25% 9.04% 12.17%
As % of the Processes & Methodologies category 10.38% 10.21% 13.78%
Number of daily rates quoted 209 401 752
Median daily rate £550 £550 £550
10th Percentile £413 £425 £425
90th Percentile £688 £675 £650
Central London median daily rate £550 £550 £538
% change year-on-year - +2.33% +2.87%
Number of hourly rates quoted 0 1 0
Median hourly rate - £63.33 -
Central London median hourly rate - £63.33 -

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 the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 1,831 4,367 6,010
As % of all contract IT jobs advertised in the City of London 89.19% 88.56% 88.34%
Number of daily rates quoted 1,356 3,427 4,739
Median daily rate £525 £513 £513
Median daily rate % change year-on-year +2.44% - +2.50%
10th Percentile £313 £319 £315
90th Percentile £688 £675 £675
Central London median daily rate £514 £510 £513
% change year-on-year +0.78% -0.49% +2.50%
Number of hourly rates quoted 23 49 66
Median hourly rate £26.50 £20.00 £19.00
Median hourly rate % change year-on-year +32.50% +5.26% +1.60%
10th Percentile £13.63 £12.03 £13.00
90th Percentile £46.00 £52.25 £28.75
Median hourly rate £27.00 £20.42 £19.25
% change year-on-year +32.26% +6.05% -3.75%

TDD
Job Vacancy Trend in the City of London

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

Job vacancy trend for TDD in the City of London

TDD
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing TDD in the City of London.

Daily rate trend for TDD in the City of London

TDD
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing TDD in the City of London over the 6 months to 18 January 2021.

Daily rate histogram for TDD in the City of London

TDD
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing TDD in the City of London.

Hourly rate trend for TDD in the City of London

TDD
Contract Job Locations in the City of 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 City of London region over the 6 months to 18 January 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge +13 1 £600 +50.00%
TDD
Central London

For the 6 months to 18 January 2021, 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 City of London region with a requirement for TDD.

1 95 (50.00%) Agile Software Development
2 91 (47.89%) Java
3 68 (35.79%) BDD
4 63 (33.16%) Docker
5 58 (30.53%) Azure
6 57 (30.00%) JavaScript
7 48 (25.26%) DevOps
8 47 (24.74%) Banking
9 46 (24.21%) Software Engineering
9 46 (24.21%) AWS
10 43 (22.63%) Spring
11 42 (22.11%) Kubernetes
12 40 (21.05%) Microservices
13 39 (20.53%) AngularJS
13 39 (20.53%) Jenkins
14 38 (20.00%) Git (software)
15 34 (17.89%) HTML
15 34 (17.89%) CSS
16 33 (17.37%) Front Office
17 32 (16.84%) Scrum
18 31 (16.32%) Continuous Integration
19 29 (15.26%) Finance
20 28 (14.74%) Web Services
20 28 (14.74%) Multithreading
21 27 (14.21%) Test Automation
21 27 (14.21%) React
22 26 (13.68%) HTML5
23 24 (12.63%) Java 8
24 23 (12.11%) Investment Banking
25 22 (11.58%) Kotlin

TDD
Co-occurring IT Skills in the City of 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 8 (4.21%) Elasticsearch
2 6 (3.16%) NServiceBus
3 5 (2.63%) Apache Spark
4 4 (2.11%) Confluence
5 3 (1.58%) JBoss
5 3 (1.58%) Jupyter
5 3 (1.58%) Red Hat Fuse
6 1 (0.53%) Cloud Foundry
6 1 (0.53%) CMS
6 1 (0.53%) Mule
6 1 (0.53%) nginx
6 1 (0.53%) SharePoint
6 1 (0.53%) WordPress
Business Applications
1 2 (1.05%) Dynamics CRM
2 1 (0.53%) thinkFolio
Cloud Services
1 58 (30.53%) Azure
2 46 (24.21%) AWS
3 12 (6.32%) Serverless
4 8 (4.21%) GCP
4 8 (4.21%) GitHub
5 7 (3.68%) Azure Functions
6 6 (3.16%) PaaS
6 6 (3.16%) SaaS
7 4 (2.11%) Amazon S3
7 4 (2.11%) Amazon SQS
7 4 (2.11%) Azure Data Factory
7 4 (2.11%) IaaS
7 4 (2.11%) Power Platform
7 4 (2.11%) Virtual Private Cloud
8 3 (1.58%) Dynamics 365
8 3 (1.58%) OpenShift
9 2 (1.05%) Apigee
9 2 (1.05%) PowerApps
9 2 (1.05%) Slack
10 1 (0.53%) Azure Active Directory
Communications & Networking
1 4 (2.11%) Internet
2 3 (1.58%) DNS
2 3 (1.58%) FTP
2 3 (1.58%) HTTP
2 3 (1.58%) SSL
2 3 (1.58%) TCP/IP
3 2 (1.05%) AMQP
4 1 (0.53%) HTTPS
Database & Business Intelligence
1 12 (6.32%) MongoDB
1 12 (6.32%) SQL Server
2 9 (4.74%) MySQL
3 6 (3.16%) NoSQL
4 5 (2.63%) Data Warehouse
4 5 (2.63%) Hadoop
4 5 (2.63%) PostgreSQL
5 4 (2.11%) MS Access
6 3 (1.58%) Apache Cassandra
6 3 (1.58%) Relational Database
7 2 (1.05%) Amazon RDS
7 2 (1.05%) Apache Hive
7 2 (1.05%) Cloud Spanner
7 2 (1.05%) Power BI
7 2 (1.05%) SQLite
8 1 (0.53%) Azure SQL Database
8 1 (0.53%) OLTP
8 1 (0.53%) Oracle Database
8 1 (0.53%) Oracle Database 10g
8 1 (0.53%) Oracle Database 11g
Development Applications
1 39 (20.53%) Jenkins
2 38 (20.00%) Git (software)
3 15 (7.89%) JUnit
4 12 (6.32%) Maven
4 12 (6.32%) Selenium
5 9 (4.74%) Cucumber
5 9 (4.74%) Mockito
6 6 (3.16%) Cypress.io
6 6 (3.16%) JIRA
6 6 (3.16%) Mocha
7 5 (2.63%) Atlassian Bamboo
7 5 (2.63%) Gatling
7 5 (2.63%) Gradle
7 5 (2.63%) Hudson
7 5 (2.63%) Jasmine
8 4 (2.11%) JMeter
8 4 (2.11%) Subversion
9 3 (1.58%) FishEye
9 3 (1.58%) jMock
9 3 (1.58%) TestNG
General
1 47 (24.74%) Banking
2 33 (17.37%) Front Office
3 29 (15.26%) Finance
4 23 (12.11%) Investment Banking
5 8 (4.21%) Games
6 6 (3.16%) Public Sector
7 4 (2.11%) Retail
8 1 (0.53%) Aerospace
8 1 (0.53%) Financial Institution
8 1 (0.53%) Marketing
Job Titles
1 156 (82.11%) Developer
2 57 (30.00%) Java Developer
3 21 (11.05%) Backend Developer
4 19 (10.00%) PHP Developer
5 14 (7.37%) Senior Developer
6 11 (5.79%) Front Office Developer
7 9 (4.74%) .NET Developer
7 9 (4.74%) Front End Developer (Client-Side Developer)
7 9 (4.74%) Senior Java Developer
8 8 (4.21%) Low Latency Java Developer
8 8 (4.21%) Scala Developer
9 7 (3.68%) JavaScript Developer
10 6 (3.16%) Agile Developer
10 6 (3.16%) Agile Java Developer
10 6 (3.16%) C# Developer
10 6 (3.16%) DevOps Engineer
10 6 (3.16%) Software Engineer
11 5 (2.63%) Electronic Trading Developer
11 5 (2.63%) Electronic Trading Java Developer
11 5 (2.63%) React Developer
Libraries, Frameworks & Software Standards
1 43 (22.63%) Spring
2 39 (20.53%) AngularJS
3 34 (17.89%) CSS
3 34 (17.89%) HTML
4 28 (14.74%) Web Services
5 27 (14.21%) React
6 26 (13.68%) HTML5
7 21 (11.05%) CSS3
7 21 (11.05%) Sass
7 21 (11.05%) Spring Boot
7 21 (11.05%) Vue.js
8 20 (10.53%) LESS
8 20 (10.53%) REST
9 19 (10.00%) Laravel
9 19 (10.00%) Vuetify.js
10 16 (8.42%) Node.js
11 14 (7.37%) Kafka
12 13 (6.84%) .NET
12 13 (6.84%) RESTful
13 10 (5.26%) XML
Miscellaneous
1 18 (9.47%) Greenfield Project
2 12 (6.32%) Foreign Exchange (FX)
3 7 (3.68%) Market Risk
4 6 (3.16%) Credit Risk
4 6 (3.16%) Grid Computing
5 5 (2.63%) Fixed Income
6 4 (2.11%) Analytical Skills
6 4 (2.11%) Data Centre
6 4 (2.11%) Enterprise Software
6 4 (2.11%) Self-Motivation
7 3 (1.58%) Data Structures
7 3 (1.58%) Derivative
7 3 (1.58%) Equities
8 2 (1.05%) Algorithms
8 2 (1.05%) Mobile App
8 2 (1.05%) Online Games
9 1 (0.53%) Analytical Mindset
9 1 (0.53%) CCTV
9 1 (0.53%) Public Cloud
9 1 (0.53%) User Experience
Operating Systems
1 20 (10.53%) Linux
2 13 (6.84%) Unix
3 7 (3.68%) Android
4 3 (1.58%) Apple iOS
5 2 (1.05%) CentOS
5 2 (1.05%) Ubuntu
5 2 (1.05%) Windows
6 1 (0.53%) Mac OS
Processes & Methodologies
1 95 (50.00%) Agile Software Development
2 68 (35.79%) BDD
3 48 (25.26%) DevOps
4 46 (24.21%) Software Engineering
5 40 (21.05%) Microservices
6 32 (16.84%) Scrum
7 31 (16.32%) Continuous Integration
8 28 (14.74%) Multithreading
9 27 (14.21%) Test Automation
10 21 (11.05%) Low Latency
11 19 (10.00%) MVC
11 19 (10.00%) Pair Programming
12 14 (7.37%) Continuous Delivery
13 12 (6.32%) OO
14 11 (5.79%) Front End Development
14 11 (5.79%) Unit Testing
15 10 (5.26%) Data Analysis
15 10 (5.26%) Fintech
16 9 (4.74%) Electronic Trading
16 9 (4.74%) SDLC
Programming Languages
1 91 (47.89%) Java
2 57 (30.00%) JavaScript
3 24 (12.63%) Java 8
4 22 (11.58%) Kotlin
5 21 (11.05%) C#
6 20 (10.53%) PHP
7 17 (8.95%) Scala
8 15 (7.89%) Python
8 15 (7.89%) TypeScript
9 8 (4.21%) Ruby
9 8 (4.21%) SQL
10 7 (3.68%) Go
11 4 (2.11%) Apple Swift
12 3 (1.58%) C++
12 3 (1.58%) Objective-C
13 2 (1.05%) Bash Shell
13 2 (1.05%) PL/SQL
13 2 (1.05%) PowerShell
14 1 (0.53%) C
14 1 (0.53%) Clojure
Qualifications
1 8 (4.21%) Security Cleared
2 7 (3.68%) SC Cleared
3 6 (3.16%) Degree
4 4 (2.11%) Numerate Degree
5 2 (1.05%) AWS Certification
6 1 (0.53%) Computer Science Degree
Quality Assurance & Compliance
1 6 (3.16%) QA
2 1 (0.53%) MiFID
System Software
1 63 (33.16%) Docker
2 1 (0.53%) Active Directory
2 1 (0.53%) Virtual Machines
2 1 (0.53%) VMware Infrastructure
2 1 (0.53%) vSphere
Systems Management
1 42 (22.11%) Kubernetes
2 12 (6.32%) Terraform
3 7 (3.68%) Ansible
4 3 (1.58%) Docker Swarm
4 3 (1.58%) Opscode Chef
5 2 (1.05%) Consul
5 2 (1.05%) Grafana
5 2 (1.05%) Prometheus
5 2 (1.05%) Rundeck
6 1 (0.53%) Puppet
6 1 (0.53%) Salt
6 1 (0.53%) vRealize
Vendors
1 12 (6.32%) Microsoft
2 6 (3.16%) Oracle
3 4 (2.11%) Atlassian
4 3 (1.58%) Murex
4 3 (1.58%) Splunk
4 3 (1.58%) Sybase
5 2 (1.05%) Confluent
5 2 (1.05%) Dynatrace
5 2 (1.05%) Google
6 1 (0.53%) Charles River
6 1 (0.53%) CheckPoint
6 1 (0.53%) Databricks
6 1 (0.53%) HP
6 1 (0.53%) IBM
6 1 (0.53%) Remedy
6 1 (0.53%) VMware