Period
to 30 October 2020

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 30 October 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)
Central London > City of London
6 months to
30 Oct 2020
Same period 2019 Same period 2018
Rank 16 15 9
Rank change year-on-year -1 -6 +1
Contract jobs citing TDD 146 570 855
As % of all contract jobs advertised in the City of London 8.07% 9.55% 12.15%
As % of the Processes & Methodologies category 9.18% 10.60% 13.92%
Number of daily rates quoted 149 507 774
Median daily rate £550 £550 £525
Median daily rate % change year-on-year - +4.76% -
10th Percentile £375 £431 £425
90th Percentile £675 £690 £675
Central London median daily rate £550 £550 £525
% change year-on-year - +4.76% -
Number of hourly rates quoted 2 1 0
Median hourly rate £35.00 £63.33 -
Median hourly rate % change year-on-year -44.73% - -
Central London median hourly rate £35.00 £63.33 -
% change year-on-year -44.73% - -

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 1,591 5,376 6,144
As % of all contract IT jobs advertised in the City of London 87.95% 90.05% 87.31%
Number of daily rates quoted 1,129 4,226 4,897
Median daily rate £515 £525 £505
Median daily rate % change year-on-year -1.90% +3.96% -0.98%
10th Percentile £313 £325 £325
90th Percentile £675 £680 £675
Central London median daily rate £513 £513 £500
% change year-on-year - +2.50% -
Number of hourly rates quoted 31 63 100
Median hourly rate £32.00 £19.50 £18.85
Median hourly rate % change year-on-year +64.10% +3.45% +10.88%
10th Percentile £15.00 £12.00 £13.28
90th Percentile £47.75 £52.05 £30.30
Median hourly rate £30.95 £20.42 £19.00
% change year-on-year +51.58% +7.45% +1.60%

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 30 October 2020.

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 30 October 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
London Bridge +34 1 £600 +36.36%
TDD
Central London

For the 6 months to 30 October 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 City of London region with a requirement for TDD.

1 86 (58.90%) Agile Software Development
2 82 (56.16%) Java
3 58 (39.73%) BDD
4 44 (30.14%) Docker
5 41 (28.08%) Microservices
5 41 (28.08%) Azure
6 39 (26.71%) JavaScript
7 35 (23.97%) AWS
8 34 (23.29%) DevOps
9 33 (22.60%) Front Office
9 33 (22.60%) Banking
10 32 (21.92%) Scrum
10 32 (21.92%) Git (software)
10 32 (21.92%) Kubernetes
11 29 (19.86%) Spring
12 25 (17.12%) CSS
12 25 (17.12%) AngularJS
12 25 (17.12%) Jenkins
13 23 (15.75%) HTML
14 22 (15.07%) Test Automation
15 21 (14.38%) Continuous Integration
15 21 (14.38%) Web Services
15 21 (14.38%) React
16 20 (13.70%) Greenfield Project
16 20 (13.70%) Java 8
16 20 (13.70%) Software Engineering
16 20 (13.70%) Finance
16 20 (13.70%) Multithreading
17 19 (13.01%) Scala
18 18 (12.33%) HTML5

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 9 (6.16%) Apache Spark
2 6 (4.11%) Elasticsearch
3 4 (2.74%) Confluence
4 2 (1.37%) JBoss
4 2 (1.37%) Jupyter
4 2 (1.37%) Red Hat Fuse
5 1 (0.68%) Apache Solr
5 1 (0.68%) Cloud Foundry
Business Applications
1 1 (0.68%) ION MarketView
1 1 (0.68%) thinkFolio
Cloud Services
1 41 (28.08%) Azure
2 35 (23.97%) AWS
3 10 (6.85%) GitHub
4 7 (4.79%) GCP
5 6 (4.11%) SaaS
6 5 (3.42%) IaaS
6 5 (3.42%) Serverless
7 4 (2.74%) PaaS
8 3 (2.05%) Azure Data Factory
8 3 (2.05%) Slack
9 2 (1.37%) Amazon ECS
9 2 (1.37%) Power Platform
10 1 (0.68%) Amazon CloudWatch
10 1 (0.68%) AWS Fargate
10 1 (0.68%) Azure Functions
10 1 (0.68%) BlazeMeter
10 1 (0.68%) Logic Apps
10 1 (0.68%) OpenShift
10 1 (0.68%) PowerApps
10 1 (0.68%) Virtual Private Cloud
Communications & Networking
1 3 (2.05%) DNS
2 2 (1.37%) AMQP
2 2 (1.37%) DHCP
2 2 (1.37%) HTTP
2 2 (1.37%) Internet
3 1 (0.68%) FTP
3 1 (0.68%) HTTPS
3 1 (0.68%) SSL
3 1 (0.68%) TCP/IP
Database & Business Intelligence
1 11 (7.53%) MongoDB
1 11 (7.53%) SQL Server
2 8 (5.48%) Hadoop
3 7 (4.79%) MySQL
4 6 (4.11%) NoSQL
5 5 (3.42%) PostgreSQL
6 4 (2.74%) Data Warehouse
7 3 (2.05%) Apache Cassandra
7 3 (2.05%) MS Access
8 2 (1.37%) HBase
8 2 (1.37%) Relational Database
8 2 (1.37%) SQL Server Integration Services
9 1 (0.68%) Amazon Redshift
9 1 (0.68%) Apache Hive
9 1 (0.68%) Azure SQL Database
9 1 (0.68%) Cloud Spanner
9 1 (0.68%) OLTP
9 1 (0.68%) Power BI
Development Applications
1 32 (21.92%) Git (software)
2 25 (17.12%) Jenkins
3 10 (6.85%) Selenium
4 9 (6.16%) JUnit
5 7 (4.79%) Cucumber
5 7 (4.79%) Jasmine
6 6 (4.11%) JIRA
6 6 (4.11%) Maven
6 6 (4.11%) Mocha
7 5 (3.42%) Cypress.io
7 5 (3.42%) Mockito
7 5 (3.42%) Subversion
8 4 (2.74%) Hudson
8 4 (2.74%) JMeter
8 4 (2.74%) TestNG
9 3 (2.05%) Atlassian Bamboo
9 3 (2.05%) NUnit
9 3 (2.05%) SpecFlow
9 3 (2.05%) Team Foundation Server
9 3 (2.05%) TeamCity
General
1 33 (22.60%) Banking
1 33 (22.60%) Front Office
2 20 (13.70%) Finance
3 18 (12.33%) Investment Banking
4 8 (5.48%) Games
5 7 (4.79%) Public Sector
6 2 (1.37%) Retail
7 1 (0.68%) Financial Institution
Job Titles
1 114 (78.08%) Developer
2 47 (32.19%) Java Developer
3 14 (9.59%) Backend Developer
4 12 (8.22%) Front Office Developer
4 12 (8.22%) PHP Developer
5 9 (6.16%) Agile Developer
5 9 (6.16%) Agile Java Developer
6 8 (5.48%) Front End Developer (Client-Side Developer)
7 7 (4.79%) JavaScript Developer
7 7 (4.79%) React Developer
7 7 (4.79%) Scala Developer
8 6 (4.11%) DevOps Engineer
8 6 (4.11%) Full Stack Developer
8 6 (4.11%) Low Latency Java Developer
9 5 (3.42%) AWS Developer
9 5 (3.42%) AWS Engineer
9 5 (3.42%) C# Developer
9 5 (3.42%) Software Engineer
10 4 (2.74%) Electronic Trading Developer
10 4 (2.74%) Electronic Trading Java Developer
Libraries, Frameworks & Software Standards
1 29 (19.86%) Spring
2 25 (17.12%) AngularJS
2 25 (17.12%) CSS
3 23 (15.75%) HTML
4 21 (14.38%) React
4 21 (14.38%) Web Services
5 18 (12.33%) HTML5
6 14 (9.59%) REST
6 14 (9.59%) Sass
6 14 (9.59%) Vue.js
7 13 (8.90%) CSS3
7 13 (8.90%) LESS
8 12 (8.22%) Laravel
8 12 (8.22%) Node.js
8 12 (8.22%) RESTful
8 12 (8.22%) Vuetify.js
9 10 (6.85%) Kafka
9 10 (6.85%) Spring Boot
10 8 (5.48%) Redux
11 7 (4.79%) GraphQL
Miscellaneous
1 20 (13.70%) Greenfield Project
2 10 (6.85%) Fixed Income
3 6 (4.11%) Foreign Exchange (FX)
4 4 (2.74%) Analytical Skills
4 4 (2.74%) User Experience
5 3 (2.05%) Data Centre
6 2 (1.37%) Algorithms
6 2 (1.37%) Clustering
6 2 (1.37%) Data Structures
6 2 (1.37%) Derivative
6 2 (1.37%) Market Risk
6 2 (1.37%) Online Games
6 2 (1.37%) Self-Motivation
7 1 (0.68%) Analytical Mindset
7 1 (0.68%) Blog
7 1 (0.68%) CCTV
7 1 (0.68%) Equities
7 1 (0.68%) FMCG
7 1 (0.68%) Interest Rate Derivative
7 1 (0.68%) Public Cloud
Operating Systems
1 13 (8.90%) Linux
2 9 (6.16%) Unix
3 2 (1.37%) Android
3 2 (1.37%) Mac OS X
3 2 (1.37%) Windows
4 1 (0.68%) Apple iOS
4 1 (0.68%) Mac OS
Processes & Methodologies
1 86 (58.90%) Agile Software Development
2 58 (39.73%) BDD
3 41 (28.08%) Microservices
4 34 (23.29%) DevOps
5 32 (21.92%) Scrum
6 22 (15.07%) Test Automation
7 21 (14.38%) Continuous Integration
8 20 (13.70%) Multithreading
8 20 (13.70%) Software Engineering
9 14 (9.59%) MVC
10 12 (8.22%) Fintech
10 12 (8.22%) Pair Programming
11 10 (6.85%) Computer Science
11 10 (6.85%) Front End Development
11 10 (6.85%) Unit Testing
12 9 (6.16%) Concurrent Programming
12 9 (6.16%) Low Latency
12 9 (6.16%) Mathematics
12 9 (6.16%) SDLC
13 8 (5.48%) Continuous Delivery
Programming Languages
1 82 (56.16%) Java
2 39 (26.71%) JavaScript
3 20 (13.70%) Java 8
4 19 (13.01%) Scala
5 15 (10.27%) Kotlin
5 15 (10.27%) PHP
6 14 (9.59%) Python
7 13 (8.90%) C#
8 9 (6.16%) TypeScript
9 7 (4.79%) Ruby
10 6 (4.11%) SQL
11 3 (2.05%) C
11 3 (2.05%) Go
12 2 (1.37%) Apple Swift
12 2 (1.37%) Objective-C
12 2 (1.37%) Perl
12 2 (1.37%) R
12 2 (1.37%) Shell Script
13 1 (0.68%) Clojure
13 1 (0.68%) PowerShell
Qualifications
1 9 (6.16%) Degree
2 8 (5.48%) Numerate Degree
3 7 (4.79%) Security Cleared
4 3 (2.05%) SC Cleared
5 1 (0.68%) AWS Certification
5 1 (0.68%) BPSS Clearance
5 1 (0.68%) Computer Science Degree
5 1 (0.68%) DBS Check
Quality Assurance & Compliance
1 4 (2.74%) QA
2 2 (1.37%) WCAG
3 1 (0.68%) Disclosure Scotland
3 1 (0.68%) MiFID
System Software
1 44 (30.14%) Docker
2 2 (1.37%) Veritas Cluster Server
3 1 (0.68%) Virtual Machines
Systems Management
1 32 (21.92%) Kubernetes
2 8 (5.48%) Terraform
3 5 (3.42%) Ansible
4 4 (2.74%) Opscode Chef
5 2 (1.37%) Pacemaker
5 2 (1.37%) Puppet
5 2 (1.37%) Rundeck
5 2 (1.37%) Salt
6 1 (0.68%) Docker Swarm
6 1 (0.68%) Grafana
6 1 (0.68%) Prometheus
Vendors
1 5 (3.42%) Microsoft
2 4 (2.74%) Oracle
2 4 (2.74%) Splunk
3 3 (2.05%) Atlassian
4 2 (1.37%) Databricks
4 2 (1.37%) Dynatrace
4 2 (1.37%) Google
4 2 (1.37%) Murex
4 2 (1.37%) SaltStack
4 2 (1.37%) Sybase
4 2 (1.37%) Veritas
5 1 (0.68%) Charles River
5 1 (0.68%) CheckPoint
5 1 (0.68%) Confluent
5 1 (0.68%) IBM
5 1 (0.68%) ION Trading