Period
to 17 July 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 17 July 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
17 Jul 2019
Same period 2018 Same period 2017
Rank 15 12 10
Rank change year-on-year -3 -2 +1
Contract jobs citing TDD 863 981 770
As % of all contract IT jobs advertised in Central London 10.02% 10.52% 10.10%
As % of the Processes & Methodologies category 11.12% 11.89% 11.41%
Number of daily rates quoted 777 846 666
Central London median daily rate £550 £525 £513
Median daily rate % change year-on-year +4.76% +2.44% +2.50%
10th Percentile £425 £413 £363
90th Percentile £675 £688 £650
London median daily rate £550 £525 £500
% change year-on-year +4.76% +5.00% +2.56%
Number of hourly rates quoted 1 0 0
Central London median hourly rate £60.00 - -
London median hourly rate £35.00 £45.00 £37.50
% change year-on-year -22.22% +20.00% -31.82%

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 7,764 8,248 6,747
As % of all contract IT jobs advertised in Central London 90.11% 88.49% 88.46%
Number of daily rates quoted 6,019 6,414 5,161
Central London median daily rate £525 £500 £500
Median daily rate % change year-on-year +5.00% +0.10% +7.42%
10th Percentile £350 £325 £313
90th Percentile £675 £688 £675
London median daily rate £520 £500 £480
% change year-on-year +4.00% +4.17% +3.78%
Number of hourly rates quoted 82 123 68
Central London median hourly rate £21.34 £18.70 £17.85
Median hourly rate % change year-on-year +14.12% +4.79% -10.78%
10th Percentile £11.25 £12.55 £12.84
90th Percentile £56.23 £38.49 £29.84
London median hourly rate £24.50 £24.50 £24.41
% change year-on-year - +0.37% +16.24%

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 17 July 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 17 July 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 -4 604 £550 +4.76% 239
City of Westminster +4 52 £550 +7.32%
Southwark -13 32 £525 -4.55%
West End of London -2 23 £550 +4.76%
Camden +9 6 £550 +19.57%
TDD
London

For the 6 months to 17 July 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.

1 570 (66.05%) Agile Software Development
2 374 (43.34%) Java
3 325 (37.66%) Microservices
4 320 (37.08%) BDD
5 300 (34.76%) JavaScript
6 233 (27.00%) Amazon AWS
7 195 (22.60%) Docker
8 187 (21.67%) Finance
9 186 (21.55%) HTML
10 183 (21.21%) C#
11 181 (20.97%) Node.js
12 178 (20.63%) AngularJS
13 170 (19.70%) CSS
14 165 (19.12%) Git (software)
15 163 (18.89%) SQL
16 162 (18.77%) React
17 160 (18.54%) RESTful
18 154 (17.84%) Scrum
19 149 (17.27%) Microsoft Azure
20 147 (17.03%) DevOps
21 146 (16.92%) .NET
22 140 (16.22%) Spring
23 138 (15.99%) Redux
24 128 (14.83%) Kubernetes
25 126 (14.60%) Java 8
26 123 (14.25%) REST
27 121 (14.02%) Front End Development
28 120 (13.90%) Test Automation
29 116 (13.44%) Linux
30 115 (13.33%) Greenfield Project

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 73 (8.46%) Elasticsearch
2 35 (4.06%) Apache Spark
3 29 (3.36%) Apache
4 23 (2.67%) Confluence
5 15 (1.74%) CMS
6 7 (0.81%) Apache Solr
7 6 (0.70%) Drupal
8 5 (0.58%) JBoss
9 4 (0.46%) IIS
9 4 (0.46%) Jetty
9 4 (0.46%) WordPress
10 3 (0.35%) Adobe Experience Manager
10 3 (0.35%) EPiServer
10 3 (0.35%) nginx
10 3 (0.35%) SharePoint
10 3 (0.35%) Tomcat
10 3 (0.35%) WebLogic
11 2 (0.23%) Oracle Self-Service HR
11 2 (0.23%) Sitecore CMS
11 2 (0.23%) WebSphere
Applications
1 8 (0.93%) Microsoft Excel
2 3 (0.35%) Chatbot
3 1 (0.12%) Adobe Illustrator
3 1 (0.12%) Photoshop
3 1 (0.12%) Zeplin
Business Applications
1 4 (0.46%) Remedy ITSM
2 2 (0.23%) Dynamics CRM
Cloud Services
1 233 (27.00%) Amazon AWS
2 149 (17.27%) Microsoft Azure
3 46 (5.33%) Serverless
4 25 (2.90%) Google Cloud Platform
5 22 (2.55%) GitHub
6 20 (2.32%) Amazon SQS
6 20 (2.32%) AWS Lambda
7 11 (1.27%) Amazon EC2
8 10 (1.16%) Amazon S3
8 10 (1.16%) SaaS
9 9 (1.04%) PaaS
10 8 (0.93%) Amazon CloudWatch
10 8 (0.93%) Amazon Glacier
10 8 (0.93%) AWS CloudFormation
10 8 (0.93%) AWS CloudTrail
10 8 (0.93%) Virtual Private Cloud
11 6 (0.70%) Google Sheets
11 6 (0.70%) npm
12 5 (0.58%) Cloud Computing
13 4 (0.46%) Google Analytics
Communications & Networking
1 32 (3.71%) HTTP
2 12 (1.39%) TCP/IP
3 11 (1.27%) DNS
3 11 (1.27%) FTP
3 11 (1.27%) SSL
4 3 (0.35%) Internet
5 2 (0.23%) SSH
6 1 (0.12%) AMQP
6 1 (0.12%) Intrusion Detection
6 1 (0.12%) Skype
Database & Business Intelligence
1 87 (10.08%) NoSQL
2 64 (7.42%) Redis
3 61 (7.07%) MongoDB
4 55 (6.37%) Relational Database
4 55 (6.37%) SQL Server
5 46 (5.33%) MySQL
6 42 (4.87%) PostgreSQL
7 29 (3.36%) Cosmos DB
8 26 (3.01%) Azure SQL Database
8 26 (3.01%) Hadoop
9 25 (2.90%) Apache Cassandra
10 24 (2.78%) Data Lake
11 20 (2.32%) Big Data
11 20 (2.32%) Couchbase
12 15 (1.74%) HBase
13 12 (1.39%) Neo4j
14 10 (1.16%) Amazon DynamoDB
14 10 (1.16%) Amazon RDS
15 9 (1.04%) Riak
16 8 (0.93%) Impala
Development Applications
1 165 (19.12%) Git (software)
2 99 (11.47%) Jenkins
3 56 (6.49%) JIRA
4 54 (6.26%) Maven
5 44 (5.10%) Selenium
6 39 (4.52%) webpack
7 35 (4.06%) Cucumber
7 35 (4.06%) Mockito
8 34 (3.94%) TeamCity
9 31 (3.59%) Subversion
10 30 (3.48%) gulp
10 30 (3.48%) Mocha
11 25 (2.90%) JUnit
11 25 (2.90%) Team Foundation Server
12 23 (2.67%) Gradle
13 21 (2.43%) Octopus Deploy
14 19 (2.20%) Jasmine
15 18 (2.09%) Gatling
15 18 (2.09%) Grunt
15 18 (2.09%) WebDriver
General
1 187 (21.67%) Finance
2 57 (6.60%) Banking
3 31 (3.59%) Front Office
4 23 (2.67%) Retail
5 13 (1.51%) Investment Banking
5 13 (1.51%) Marketing
6 12 (1.39%) Games
7 10 (1.16%) Retail Banking
8 9 (1.04%) Back Office
9 5 (0.58%) Financial Institution
10 4 (0.46%) Legal
10 4 (0.46%) Publishing
11 3 (0.35%) Law
12 2 (0.23%) Advertising
12 2 (0.23%) Electronics
12 2 (0.23%) Manufacturing
12 2 (0.23%) Telecoms
13 1 (0.12%) Automotive
13 1 (0.12%) German Language
13 1 (0.12%) Prime Brokerage
Job Titles
1 675 (78.22%) Developer
2 229 (26.54%) Java Developer
3 138 (15.99%) React Developer
4 131 (15.18%) Senior Developer
5 96 (11.12%) Front End Developer (Client-Side Developer)
6 67 (7.76%) Full Stack Developer
7 57 (6.60%) .NET Developer
8 44 (5.10%) Senior Java Developer
9 40 (4.63%) AWS Developer
10 39 (4.52%) Scala Developer
11 38 (4.40%) C# Developer
12 34 (3.94%) Angular Developer
13 32 (3.71%) Agile Developer
14 25 (2.90%) JavaScript Developer
15 24 (2.78%) Architect
16 23 (2.67%) Python Developer
16 23 (2.67%) Ruby Developer
17 22 (2.55%) Agile Java Developer
17 22 (2.55%) Lead Developer
18 19 (2.20%) E-Commerce Developer
Libraries, Frameworks & Software Standards
1 186 (21.55%) HTML
2 181 (20.97%) Node.js
3 178 (20.63%) AngularJS
4 170 (19.70%) CSS
5 162 (18.77%) React
6 160 (18.54%) RESTful
7 146 (16.92%) .NET
8 140 (16.22%) Spring
9 138 (15.99%) Redux
10 123 (14.25%) REST
11 94 (10.89%) Kafka
12 88 (10.20%) HTML5
13 79 (9.15%) Spring Boot
14 57 (6.60%) .NET Core
14 57 (6.60%) Web Services
15 50 (5.79%) ASP.NET
16 47 (5.45%) .NET Framework
16 47 (5.45%) SOAP
17 46 (5.33%) Sass
18 43 (4.98%) JSON
Miscellaneous
1 115 (13.33%) Greenfield Project
2 29 (3.36%) User Experience
2 29 (3.36%) Virtual Team
3 23 (2.67%) Mobile App
4 22 (2.55%) Algorithms
5 20 (2.32%) Enterprise Software
6 17 (1.97%) Data Structures
7 15 (1.74%) Analytical Skills
7 15 (1.74%) Data Protection Act
8 13 (1.51%) Hedge funds
9 12 (1.39%) Fixed Income
10 11 (1.27%) Derivative
11 10 (1.16%) Linux Command Line
12 8 (0.93%) Foreign Exchange (FX)
13 7 (0.81%) Equity Derivative
14 5 (0.58%) Equities
14 5 (0.58%) iPad
15 4 (0.46%) Management Information System
16 3 (0.35%) Video on Demand
16 3 (0.35%) Video\Live Streaming
Operating Systems
1 116 (13.44%) Linux
2 58 (6.72%) Unix
3 36 (4.17%) Mac OS X
4 18 (2.09%) Apple iOS
5 15 (1.74%) Android
6 11 (1.27%) Windows
7 4 (0.46%) Windows Server
8 3 (0.35%) Mac OS
8 3 (0.35%) Ubuntu
9 2 (0.23%) CentOS
9 2 (0.23%) Debian
9 2 (0.23%) Red Hat Enterprise Linux
10 1 (0.12%) Solaris
10 1 (0.12%) tvOS
Processes & Methodologies
1 570 (66.05%) Agile Software Development
2 325 (37.66%) Microservices
3 320 (37.08%) BDD
4 154 (17.84%) Scrum
5 147 (17.03%) DevOps
6 121 (14.02%) Front End Development
7 120 (13.90%) Test Automation
8 114 (13.21%) Continuous Integration
9 94 (10.89%) Fintech
10 91 (10.54%) Pair Programming
11 82 (9.50%) Web Development
12 74 (8.57%) E-Commerce
13 69 (8.00%) MVC
13 69 (8.00%) SDLC
14 68 (7.88%) Software Engineering
15 65 (7.53%) Kanban
16 64 (7.42%) Continuous Delivery
17 63 (7.30%) Unit Testing
18 60 (6.95%) OO
19 46 (5.33%) Responsive Web Design
Programming Languages
1 374 (43.34%) Java
2 300 (34.76%) JavaScript
3 183 (21.21%) C#
4 163 (18.89%) SQL
5 126 (14.60%) Java 8
6 94 (10.89%) TypeScript
7 93 (10.78%) Python
8 80 (9.27%) Scala
9 56 (6.49%) ES6
10 53 (6.14%) Ruby
11 26 (3.01%) Kotlin
12 24 (2.78%) PHP
13 17 (1.97%) Bash Shell
14 15 (1.74%) Go
15 13 (1.51%) Groovy
16 10 (1.16%) T-SQL
17 8 (0.93%) PowerShell
18 7 (0.81%) C++
18 7 (0.81%) Perl
18 7 (0.81%) R
Qualifications
1 30 (3.48%) Security Cleared
2 29 (3.36%) Degree
3 23 (2.67%) SC Cleared
4 7 (0.81%) ISTQB
5 5 (0.58%) Computer Science Degree
6 4 (0.46%) BPSS Clearance
6 4 (0.46%) CTC Cleared
6 4 (0.46%) Master's Degree
7 2 (0.23%) DV Cleared
8 1 (0.12%) AWS Certification
8 1 (0.12%) ISEB
8 1 (0.12%) ISTQB Foundation Certification
8 1 (0.12%) Sun Certification
Quality Assurance & Compliance
1 42 (4.87%) QA
2 7 (0.81%) Data Quality
3 5 (0.58%) WCAG
4 1 (0.12%) PCI DSS
System Software
1 195 (22.60%) Docker
2 11 (1.27%) HDFS
3 6 (0.70%) Active Directory
4 2 (0.23%) Varnish
5 1 (0.12%) Apache Flume
5 1 (0.12%) Apache ZooKeeper
5 1 (0.12%) Virtual Machines
Systems Management
1 128 (14.83%) Kubernetes
2 29 (3.36%) Terraform
3 19 (2.20%) Ansible
4 13 (1.51%) Hadoop YARN
4 13 (1.51%) Marathon
4 13 (1.51%) Mesos
5 11 (1.27%) Docker Swarm
6 7 (0.81%) Puppet
7 5 (0.58%) ITRS Geneos
7 5 (0.58%) Nagios
8 4 (0.46%) Prometheus
8 4 (0.46%) ZABBIX
9 3 (0.35%) Grafana
9 3 (0.35%) Opscode Chef
10 2 (0.23%) Salt
11 1 (0.12%) Cobbler
11 1 (0.12%) Graphite
11 1 (0.12%) HP ALM
11 1 (0.12%) Rancher
11 1 (0.12%) Single Sign-On
Vendors
1 42 (4.87%) Google
2 29 (3.36%) Microsoft
3 20 (2.32%) Atlassian
3 20 (2.32%) Oracle
4 18 (2.09%) Salesforce.com
5 8 (0.93%) Splunk
6 6 (0.70%) Alteryx
7 5 (0.58%) Perforce
8 4 (0.46%) Adobe
8 4 (0.46%) BMC
8 4 (0.46%) New Relic
8 4 (0.46%) Remedy
8 4 (0.46%) ServiceNow
8 4 (0.46%) Sybase
8 4 (0.46%) Zend
9 3 (0.35%) Apple
9 3 (0.35%) Cloudera
9 3 (0.35%) hybris
9 3 (0.35%) Sitecore
10 2 (0.23%) TIBCO