Period
to 19 November 2019

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 19 November 2019 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
19 Nov 2019
Same period 2018 Same period 2017
Rank 14 10 11
Rank change year-on-year -4 +1 +1
Contract jobs citing TDD 716 1,119 862
As % of all contract IT jobs advertised in Central London 9.59% 12.23% 10.29%
As % of the Processes & Methodologies category 10.67% 13.85% 11.51%
Number of daily rates quoted 636 981 737
Central London median daily rate £550 £525 £525
Median daily rate % change year-on-year +4.76% - +5.00%
10th Percentile £425 £424 £411
90th Percentile £675 £650 £650
London median daily rate £550 £525 £513
% change year-on-year +4.76% +2.44% +5.13%
Number of hourly rates quoted 1 0 0
Central London median hourly rate £63.33 - -
London median hourly rate £68.17 £27.25 £35.00
% change year-on-year +150.15% -22.14% -24.32%

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 6,711 8,077 7,490
As % of all contract IT jobs advertised in Central London 89.85% 88.30% 89.39%
Number of daily rates quoted 5,179 6,271 5,817
Central London median daily rate £513 £500 £500
Median daily rate % change year-on-year +2.50% - +5.26%
10th Percentile £325 £325 £325
90th Percentile £675 £675 £675
London median daily rate £513 £500 £500
% change year-on-year +2.50% - +5.26%
Number of hourly rates quoted 72 105 77
Central London median hourly rate £20.92 £19.25 £20.00
Median hourly rate % change year-on-year +8.65% -3.75% +2.77%
10th Percentile £12.04 £13.59 £13.36
90th Percentile £51.06 £33.45 £34.62
London median hourly rate £24.50 £23.07 £22.50
% change year-on-year +6.22% +2.51% +3.31%

TDD
Job Vacancy Trend in Central London

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

Job vacancy trend for TDD in Central London

TDD
Contractor Daily Rate Trend in Central London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Central London.

Contractor daily rate trend for TDD in Central London

TDD
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing TDD in Central London over the 6 months to 19 November 2019.

Contractor daily rate histogram for TDD in Central London

TDD
Contractor Hourly Rate Trend in Central London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Central London.

Contractor 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 19 November 2019. 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 -6 552 £550 +2.33% 255
City of Westminster -8 20 £500 -9.09%
West End of London -4 16 £413 -25.00%
Southwark -18 5 £525 -8.70%
Camden -2 1 £450 -5.26%
TDD
London

For the 6 months to 19 November 2019, 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.

1 481 (67.18%) Agile Software Development
2 269 (37.57%) Java
3 248 (34.64%) JavaScript
4 246 (34.36%) BDD
5 236 (32.96%) Microservices
6 175 (24.44%) C#
7 152 (21.23%) SQL
8 151 (21.09%) AWS
9 144 (20.11%) React
10 142 (19.83%) .NET
11 139 (19.41%) HTML
11 139 (19.41%) AngularJS
12 136 (18.99%) Node.js
13 135 (18.85%) CSS
14 134 (18.72%) Finance
15 133 (18.58%) Azure
16 131 (18.30%) Docker
17 128 (17.88%) DevOps
18 120 (16.76%) Scrum
19 110 (15.36%) Continuous Integration
20 107 (14.94%) Test Automation
21 102 (14.25%) Spring
22 100 (13.97%) Python
23 99 (13.83%) RESTful
24 96 (13.41%) Kubernetes
25 95 (13.27%) Front End Development
26 94 (13.13%) Software Engineering
27 93 (12.99%) Redux
28 91 (12.71%) Git (software)
29 89 (12.43%) Pair Programming

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 50 (6.98%) Elasticsearch
2 19 (2.65%) Apache Spark
3 17 (2.37%) Confluence
4 15 (2.09%) CMS
5 12 (1.68%) JBoss
6 9 (1.26%) Jetty
6 9 (1.26%) Tomcat
7 8 (1.12%) Adobe Experience Manager
7 8 (1.12%) Apache
7 8 (1.12%) IIS
8 4 (0.56%) Jupyter
8 4 (0.56%) SharePoint
9 3 (0.42%) Anypoint
9 3 (0.42%) EPiServer
9 3 (0.42%) WebLogic
9 3 (0.42%) WebSphere
10 2 (0.28%) Magnolia
10 2 (0.28%) Oracle Self-Service HR
11 1 (0.14%) Mendix
11 1 (0.14%) Mule
Applications
1 7 (0.98%) Microsoft Excel
2 5 (0.70%) Chatbot
3 2 (0.28%) Photoshop
3 2 (0.28%) Zeplin
4 1 (0.14%) Adobe Illustrator
4 1 (0.14%) Sketch
Business Applications
1 4 (0.56%) Remedy ITSM
2 3 (0.42%) Dynamics CRM
3 1 (0.14%) Magento
3 1 (0.14%) Oracle Financials
3 1 (0.14%) Oracle Retail
3 1 (0.14%) PeopleSoft Financials
3 1 (0.14%) Shopify
Cloud Services
1 151 (21.09%) AWS
2 133 (18.58%) Azure
3 35 (4.89%) GCP
4 33 (4.61%) Serverless
5 15 (2.09%) AWS Lambda
6 13 (1.82%) Cloud Computing
6 13 (1.82%) GitHub
7 10 (1.40%) npm
8 8 (1.12%) Amazon ECS
8 8 (1.12%) Power Platform
9 7 (0.98%) Amazon SQS
10 5 (0.70%) PaaS
11 4 (0.56%) CloudFront
12 3 (0.42%) Amazon EC2
12 3 (0.42%) Azure Active Directory
12 3 (0.42%) Google App Engine
12 3 (0.42%) Google Sheets
12 3 (0.42%) SaaS
12 3 (0.42%) Yarn
13 2 (0.28%) Google Play
Communications & Networking
1 16 (2.23%) HTTP
2 10 (1.40%) DNS
2 10 (1.40%) FTP
3 9 (1.26%) SSL
3 9 (1.26%) TCP/IP
4 6 (0.84%) Internet
5 3 (0.42%) SSH
6 1 (0.14%) Firewall
6 1 (0.14%) Intrusion Detection
6 1 (0.14%) LAN
6 1 (0.14%) PuTTY
6 1 (0.14%) SMTP
6 1 (0.14%) WAN
6 1 (0.14%) Wi-Fi
Database & Business Intelligence
1 74 (10.34%) NoSQL
2 64 (8.94%) SQL Server
3 49 (6.84%) MySQL
4 47 (6.56%) MongoDB
5 41 (5.73%) Redis
6 33 (4.61%) PostgreSQL
7 32 (4.47%) Relational Database
8 22 (3.07%) Hadoop
9 19 (2.65%) Cosmos DB
10 17 (2.37%) Azure SQL Database
11 16 (2.23%) Apache Cassandra
12 14 (1.96%) Couchbase
12 14 (1.96%) Data Lake
13 11 (1.54%) Big Data
13 11 (1.54%) Data Warehouse
13 11 (1.54%) HBase
14 10 (1.40%) Amazon DynamoDB
14 10 (1.40%) SQL Server Integration Services
15 8 (1.12%) Oracle Database
15 8 (1.12%) Power BI
Development Applications
1 91 (12.71%) Git (software)
2 51 (7.12%) Jenkins
3 38 (5.31%) Selenium
4 29 (4.05%) JIRA
4 29 (4.05%) Team Foundation Server
4 29 (4.05%) TeamCity
5 26 (3.63%) Mocha
5 26 (3.63%) webpack
6 24 (3.35%) Cucumber
7 19 (2.65%) JUnit
8 17 (2.37%) Jasmine
8 17 (2.37%) Maven
9 16 (2.23%) Atlassian Bamboo
9 16 (2.23%) Gradle
9 16 (2.23%) gulp
9 16 (2.23%) Visual Studio
10 14 (1.96%) Mockito
10 14 (1.96%) Moq
11 13 (1.82%) Gatling
12 12 (1.68%) GitLab
General
1 134 (18.72%) Finance
2 59 (8.24%) Banking
3 37 (5.17%) Front Office
4 22 (3.07%) Marketing
5 21 (2.93%) Retail
6 18 (2.51%) Public Sector
7 11 (1.54%) Investment Banking
7 11 (1.54%) Law
8 7 (0.98%) Advertising
8 7 (0.98%) Games
8 7 (0.98%) Telecoms
9 6 (0.84%) Retail Banking
10 5 (0.70%) Electronics
11 4 (0.56%) Financial Institution
11 4 (0.56%) Manufacturing
12 2 (0.28%) Back Office
12 2 (0.28%) Police
13 1 (0.14%) Aerospace
13 1 (0.14%) Legal
13 1 (0.14%) Publishing
Job Titles
1 540 (75.42%) Developer
2 158 (22.07%) Java Developer
3 100 (13.97%) React Developer
4 93 (12.99%) Senior Developer
5 75 (10.47%) .NET Developer
6 64 (8.94%) Full Stack Developer
7 62 (8.66%) Front End Developer (Client-Side Developer)
8 51 (7.12%) C# Developer
9 36 (5.03%) AWS Developer
10 34 (4.75%) Angular Developer
10 34 (4.75%) Python Developer
11 33 (4.61%) Scala Developer
12 29 (4.05%) Architect
12 29 (4.05%) JavaScript Developer
13 25 (3.49%) Node.js Developer
14 24 (3.35%) Senior Java Developer
14 24 (3.35%) Software Engineer
15 23 (3.21%) Agile Developer
15 23 (3.21%) C# .NET Developer
16 19 (2.65%) Agile Java Developer
Libraries, Frameworks & Software Standards
1 144 (20.11%) React
2 142 (19.83%) .NET
3 139 (19.41%) AngularJS
3 139 (19.41%) HTML
4 136 (18.99%) Node.js
5 135 (18.85%) CSS
6 102 (14.25%) Spring
7 99 (13.83%) RESTful
8 93 (12.99%) Redux
9 79 (11.03%) REST
10 65 (9.08%) HTML5
11 62 (8.66%) Kafka
12 57 (7.96%) ASP.NET
12 57 (7.96%) Spring Boot
13 53 (7.40%) .NET Framework
14 43 (6.01%) CSS3
15 40 (5.59%) ASP.NET Web API
16 36 (5.03%) ASP.NET MVC
17 30 (4.19%) .NET Core
17 30 (4.19%) Web Services
Miscellaneous
1 72 (10.06%) Greenfield Project
2 28 (3.91%) User Experience
3 19 (2.65%) Mobile App
4 18 (2.51%) Algorithms
5 16 (2.23%) Enterprise Software
6 13 (1.82%) Virtual Team
7 12 (1.68%) Data Structures
7 12 (1.68%) Public Cloud
8 11 (1.54%) Analytical Skills
9 9 (1.26%) Derivative
9 9 (1.26%) Equities
10 8 (1.12%) Hedge funds
10 8 (1.12%) Linux Command Line
11 7 (0.98%) Fixed Income
12 6 (0.84%) iPad
13 5 (0.70%) Foreign Exchange (FX)
13 5 (0.70%) N-Tier
14 4 (0.56%) Equity Derivative
14 4 (0.56%) W3C
15 3 (0.42%) Cloud Native
Operating Systems
1 56 (7.82%) Linux
2 21 (2.93%) Unix
3 13 (1.82%) Android
3 13 (1.82%) Apple iOS
4 9 (1.26%) Mac OS X
5 8 (1.12%) Windows
6 4 (0.56%) Red Hat Enterprise Linux
7 3 (0.42%) Mac OS
8 2 (0.28%) CentOS
8 2 (0.28%) Debian
8 2 (0.28%) Ubuntu
9 1 (0.14%) Embedded Linux
9 1 (0.14%) tvOS
9 1 (0.14%) Windows Server
Processes & Methodologies
1 481 (67.18%) Agile Software Development
2 246 (34.36%) BDD
3 236 (32.96%) Microservices
4 128 (17.88%) DevOps
5 120 (16.76%) Scrum
6 110 (15.36%) Continuous Integration
7 107 (14.94%) Test Automation
8 95 (13.27%) Front End Development
9 94 (13.13%) Software Engineering
10 89 (12.43%) Pair Programming
11 62 (8.66%) E-Commerce
12 60 (8.38%) MVC
12 60 (8.38%) Unit Testing
13 57 (7.96%) Kanban
13 57 (7.96%) SOLID
14 53 (7.40%) Fintech
15 52 (7.26%) Continuous Delivery
16 51 (7.12%) OO
17 47 (6.56%) Web Development
18 46 (6.42%) Digital Transformation Programme
Programming Languages
1 269 (37.57%) Java
2 248 (34.64%) JavaScript
3 175 (24.44%) C#
4 152 (21.23%) SQL
5 100 (13.97%) Python
6 88 (12.29%) TypeScript
7 64 (8.94%) Java 8
8 62 (8.66%) Scala
9 46 (6.42%) ES6
10 41 (5.73%) Ruby
11 25 (3.49%) Go
11 25 (3.49%) Kotlin
12 16 (2.23%) T-SQL
13 13 (1.82%) PHP
14 11 (1.54%) Apex Code
15 10 (1.40%) C
16 8 (1.12%) Perl
16 8 (1.12%) R
17 7 (0.98%) Bash Shell
17 7 (0.98%) Groovy
Qualifications
1 26 (3.63%) Degree
2 17 (2.37%) Security Cleared
3 14 (1.96%) SC Cleared
4 11 (1.54%) Computer Science Degree
5 8 (1.12%) Master's Degree
6 5 (0.70%) ISTQB
7 3 (0.42%) BPSS Clearance
8 1 (0.14%) CTC Cleared
8 1 (0.14%) DBS Check
8 1 (0.14%) DV Cleared
8 1 (0.14%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 36 (5.03%) QA
2 5 (0.70%) WCAG
3 4 (0.56%) GDPR
4 2 (0.28%) PCI DSS
5 1 (0.14%) Data Quality
System Software
1 131 (18.30%) Docker
2 6 (0.84%) HDFS
3 4 (0.56%) Varnish
4 3 (0.42%) Active Directory
5 2 (0.28%) Apache ZooKeeper
5 2 (0.28%) VMware Infrastructure
6 1 (0.14%) Virtual Machines
6 1 (0.14%) vSphere
Systems Management
1 96 (13.41%) Kubernetes
2 32 (4.47%) Terraform
3 20 (2.79%) Ansible
4 10 (1.40%) Docker Swarm
4 10 (1.40%) Puppet
5 9 (1.26%) Marathon
5 9 (1.26%) Mesos
6 7 (0.98%) Cobbler
6 7 (0.98%) MIIS
6 7 (0.98%) Opscode Chef
7 6 (0.84%) Hadoop YARN
8 5 (0.70%) ITRS Geneos
8 5 (0.70%) Nagios
9 4 (0.56%) Prometheus
9 4 (0.56%) ZABBIX
10 3 (0.42%) Grafana
11 2 (0.28%) Salt
11 2 (0.28%) Single Sign-On
12 1 (0.14%) Consul
12 1 (0.14%) Graphite
Vendors
1 46 (6.42%) Microsoft
2 37 (5.17%) Google
3 22 (3.07%) Salesforce.com
4 19 (2.65%) Oracle
5 15 (2.09%) Atlassian
6 9 (1.26%) Adobe
6 9 (1.26%) Splunk
7 7 (0.98%) New Relic
8 5 (0.70%) Cypress Semiconductor
8 5 (0.70%) Perforce
9 4 (0.56%) Apple
9 4 (0.56%) BMC
9 4 (0.56%) Facebook
9 4 (0.56%) Red Hat
9 4 (0.56%) Remedy
9 4 (0.56%) SAP
9 4 (0.56%) ServiceNow
9 4 (0.56%) Tableau
10 3 (0.42%) Alteryx
10 3 (0.42%) MuleSoft