Period
to 18 January 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 18 January 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
18 Jan 2019
Same period 2018 Same period 2017
Rank 9 9 10
Rank change year-on-year 0 +1 +6
Contract jobs citing TDD 1,075 937 790
As % of all contract IT jobs advertised in Central London 12.06% 10.79% 10.58%
As % of the Processes & Methodologies category 13.62% 12.14% 11.92%
Number of daily rates quoted 928 817 711
Central London median daily rate £539 £525 £500
Median daily rate % change year-on-year +2.62% +5.00% -
10th Percentile £418 £413 £360
90th Percentile £650 £650 £650
London median daily rate £538 £515 £488
% change year-on-year +4.37% +5.64% +2.63%
Number of hourly rates quoted 0 0 0
Central London median hourly rate - - -
London median hourly rate £35.00 £39.29 £46.50
% change year-on-year -10.92% -15.51% -7.00%

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 7,891 7,720 6,627
As % of all contract IT jobs advertised in Central London 88.54% 88.89% 88.73%
Number of daily rates quoted 6,036 6,032 5,142
Central London median daily rate £513 £500 £475
Median daily rate % change year-on-year +2.50% +5.26% +3.26%
10th Percentile £315 £325 £313
90th Percentile £675 £675 £650
London median daily rate £510 £500 £475
% change year-on-year +2.00% +5.26% +5.56%
Number of hourly rates quoted 84 77 57
Central London median hourly rate £19.50 £20.50 £19.00
Median hourly rate % change year-on-year -4.88% +7.89% -10.06%
10th Percentile £13.09 £13.00 £11.78
90th Percentile £36.46 £36.69 £55.00
London median hourly rate £24.47 £22.00 £23.00
% change year-on-year +11.20% -4.35% +15.00%

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 18 January 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 18 January 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 0 828 £550 +4.76% 267
Southwark +2 97 £575 +4.55%
West End of London -4 56 £550 +22.22% 2
City of Westminster +14 34 £550 +7.32% 4
Camden 0 11 £475 +5.56%
TDD
London

For the 6 months to 18 January 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.

1 769 (71.53%) Agile Software Development
2 466 (43.35%) Java
3 390 (36.28%) BDD
4 386 (35.91%) JavaScript
5 371 (34.51%) Microservices
6 270 (25.12%) Finance
7 268 (24.93%) HTML
8 266 (24.74%) Amazon AWS
9 245 (22.79%) Git (software)
10 234 (21.77%) CSS
11 219 (20.37%) C#
12 217 (20.19%) Spring
12 217 (20.19%) Microsoft Azure
13 208 (19.35%) AngularJS
14 207 (19.26%) Docker
15 200 (18.60%) Continuous Integration
16 197 (18.33%) REST
17 196 (18.23%) OO
18 195 (18.14%) Greenfield Project
19 193 (17.95%) DevOps
19 193 (17.95%) .NET
20 192 (17.86%) Scrum
21 187 (17.40%) Test Automation
22 180 (16.74%) React
23 176 (16.37%) RESTful
24 174 (16.19%) Java 8
25 173 (16.09%) Node.js
26 163 (15.16%) SQL
27 150 (13.95%) Front End Development
28 143 (13.30%) NoSQL

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 52 (4.84%) Tomcat
2 51 (4.74%) WebLogic
3 47 (4.37%) WebSphere
4 46 (4.28%) Elasticsearch
4 46 (4.28%) OpenStack
5 35 (3.26%) Confluence
6 31 (2.88%) CMS
7 26 (2.42%) Apache Spark
8 24 (2.23%) Apache
9 13 (1.21%) JBoss
10 12 (1.12%) NServiceBus
11 11 (1.02%) Cloud Foundry
12 9 (0.84%) Gunicorn
13 7 (0.65%) SharePoint
14 5 (0.47%) Mule
14 5 (0.47%) WordPress
15 3 (0.28%) Apache Airflow
15 3 (0.28%) Drupal
15 3 (0.28%) IIS
15 3 (0.28%) Oracle SOA Suite
Applications
1 4 (0.37%) Microsoft Excel
2 2 (0.19%) Adobe Illustrator
2 2 (0.19%) InVision
2 2 (0.19%) Snapchat
Business Applications
1 2 (0.19%) Payment Gateway
2 1 (0.093%) Dynamics CRM
2 1 (0.093%) SAP Hybris
Cloud Services
1 266 (24.74%) Amazon AWS
2 217 (20.19%) Microsoft Azure
3 58 (5.40%) GitHub
4 42 (3.91%) Google Cloud Platform
5 39 (3.63%) Serverless
6 22 (2.05%) AWS Lambda
7 21 (1.95%) Amazon SQS
8 19 (1.77%) Heroku
8 19 (1.77%) PaaS
9 17 (1.58%) Cloud Computing
10 13 (1.21%) npm
11 12 (1.12%) Amazon EC2
12 8 (0.74%) SaaS
13 6 (0.56%) Datadog
13 6 (0.56%) OpenShift
14 5 (0.47%) Amazon S3
14 5 (0.47%) IaaS
15 3 (0.28%) Apigee
15 3 (0.28%) Office 365
15 3 (0.28%) Yammer
Communications & Networking
1 49 (4.56%) HTTP
2 16 (1.49%) TCP/IP
3 11 (1.02%) DNS
4 10 (0.93%) FTP
5 9 (0.84%) Internet
5 9 (0.84%) SSL
6 5 (0.47%) AMQP
7 3 (0.28%) DMARC
7 3 (0.28%) Firewall
8 2 (0.19%) HTTPS
9 1 (0.093%) Bluetooth
9 1 (0.093%) LAN
9 1 (0.093%) SMTP
9 1 (0.093%) SSH
9 1 (0.093%) VPN
Database & Business Intelligence
1 143 (13.30%) NoSQL
2 108 (10.05%) MySQL
3 105 (9.77%) SQL Server
4 87 (8.09%) MongoDB
4 87 (8.09%) PostgreSQL
5 69 (6.42%) Relational Database
6 66 (6.14%) Redis
7 56 (5.21%) Apache Cassandra
8 37 (3.44%) Cosmos DB
9 27 (2.51%) Azure SQL Database
10 24 (2.23%) Riak
11 23 (2.14%) Amazon DynamoDB
12 22 (2.05%) Hadoop
13 20 (1.86%) Neo4j
14 19 (1.77%) SQL Server 2012
15 17 (1.58%) Impala
16 16 (1.49%) Data Lake
17 14 (1.30%) SQL Server 2016
18 13 (1.21%) Big Data
19 12 (1.12%) SQL Server 2014
Development Applications
1 245 (22.79%) Git (software)
2 129 (12.00%) Jenkins
3 119 (11.07%) Maven
4 89 (8.28%) Selenium
5 83 (7.72%) JIRA
6 80 (7.44%) Cucumber
7 67 (6.23%) NUnit
8 60 (5.58%) JUnit
9 52 (4.84%) MSTest
10 50 (4.65%) Team Foundation Server
11 49 (4.56%) Mockito
12 42 (3.91%) Octopus Deploy
13 37 (3.44%) gulp
14 36 (3.35%) SpecFlow
15 35 (3.26%) webpack
16 34 (3.16%) Subversion
17 33 (3.07%) Gradle
18 32 (2.98%) Visual Studio Team System
19 30 (2.79%) Mocha
20 28 (2.60%) WebDriver
General
1 270 (25.12%) Finance
2 108 (10.05%) Banking
3 56 (5.21%) Front Office
4 29 (2.70%) Investment Banking
5 26 (2.42%) Publishing
6 21 (1.95%) Law
7 19 (1.77%) Games
8 15 (1.40%) Retail
9 14 (1.30%) Financial Institution
10 9 (0.84%) Back Office
11 8 (0.74%) Pharmaceutical
12 6 (0.56%) Advertising
12 6 (0.56%) Billing
13 5 (0.47%) Automotive
14 4 (0.37%) Telecoms
15 3 (0.28%) Marketing
15 3 (0.28%) Multimedia
16 2 (0.19%) Legal
Job Titles
1 804 (74.79%) Developer
2 319 (29.67%) Java Developer
3 195 (18.14%) Senior Developer
4 104 (9.67%) Front End Developer (Client-Side Developer)
5 86 (8.00%) .NET Developer
6 82 (7.63%) React Developer
7 80 (7.44%) Senior Java Developer
8 79 (7.35%) JavaScript Developer
9 65 (6.05%) AWS Developer
10 63 (5.86%) C# Developer
11 60 (5.58%) Full Stack Developer
12 50 (4.65%) Angular Developer
13 35 (3.26%) Software Engineer
14 26 (2.42%) Analyst
15 25 (2.33%) Lead Developer
15 25 (2.33%) Scala Developer
16 24 (2.23%) Azure Developer
16 24 (2.23%) Node.js Developer
17 22 (2.05%) Agile Developer
17 22 (2.05%) C# .NET Developer
Libraries, Frameworks & Software Standards
1 268 (24.93%) HTML
2 234 (21.77%) CSS
3 217 (20.19%) Spring
4 208 (19.35%) AngularJS
5 197 (18.33%) REST
6 193 (17.95%) .NET
7 180 (16.74%) React
8 176 (16.37%) RESTful
9 173 (16.09%) Node.js
10 136 (12.65%) Spring Boot
11 125 (11.63%) HTML5
12 117 (10.88%) Web Services
13 78 (7.26%) Hibernate
13 78 (7.26%) Redux
14 75 (6.98%) JSON
15 71 (6.60%) .NET Core
16 66 (6.14%) CSS3
17 61 (5.67%) Sass
18 56 (5.21%) Kafka
19 55 (5.12%) Angular 2
Miscellaneous
1 195 (18.14%) Greenfield Project
2 72 (6.70%) User Experience
3 68 (6.33%) Fintech
4 50 (4.65%) Mobile App
5 37 (3.44%) Algorithms
6 33 (3.07%) Fixed Income
7 32 (2.98%) Data Structures
8 23 (2.14%) Analytical Skills
9 21 (1.95%) Foreign Exchange (FX)
10 16 (1.49%) Derivative
11 14 (1.30%) iPad
12 11 (1.02%) Equities
12 11 (1.02%) Self-Motivation
13 10 (0.93%) Hedge funds
14 8 (0.74%) Equity Derivative
14 8 (0.74%) Tandem
15 7 (0.65%) Video\Live Streaming
15 7 (0.65%) Virtual Team
16 6 (0.56%) Smartcard
16 6 (0.56%) Thin Client
Operating Systems
1 92 (8.56%) Linux
2 52 (4.84%) Unix
3 42 (3.91%) Android
4 37 (3.44%) Apple iOS
5 26 (2.42%) Windows
6 18 (1.67%) Mac OS X
7 10 (0.93%) Windows Server
8 2 (0.19%) VMS
9 1 (0.093%) CentOS
9 1 (0.093%) Mac OS
9 1 (0.093%) tvOS
9 1 (0.093%) Windows 7
9 1 (0.093%) Windows Mobile
9 1 (0.093%) Windows Server 2012
Processes & Methodologies
1 769 (71.53%) Agile Software Development
2 390 (36.28%) BDD
3 371 (34.51%) Microservices
4 200 (18.60%) Continuous Integration
5 196 (18.23%) OO
6 193 (17.95%) DevOps
7 192 (17.86%) Scrum
8 187 (17.40%) Test Automation
9 150 (13.95%) Front End Development
10 127 (11.81%) Software Engineering
11 107 (9.95%) Unit Testing
12 103 (9.58%) Kanban
13 96 (8.93%) E-Commerce
13 96 (8.93%) Pair Programming
14 86 (8.00%) MVC
15 85 (7.91%) Continuous Delivery
16 68 (6.33%) Computer Science
17 59 (5.49%) Open Source
18 58 (5.40%) Multithreading
19 54 (5.02%) SDLC
Programming Languages
1 466 (43.35%) Java
2 386 (35.91%) JavaScript
3 219 (20.37%) C#
4 174 (16.19%) Java 8
5 163 (15.16%) SQL
6 83 (7.72%) Python
7 63 (5.86%) TypeScript
8 54 (5.02%) Kotlin
9 45 (4.19%) ES6
9 45 (4.19%) PHP
10 44 (4.09%) Scala
11 38 (3.53%) Ruby
12 35 (3.26%) Go
13 24 (2.23%) C
14 21 (1.95%) PowerShell
15 20 (1.86%) T-SQL
16 18 (1.67%) Bash Shell
17 17 (1.58%) PHP 7
18 15 (1.40%) Groovy
19 10 (0.93%) PL/SQL
Qualifications
1 72 (6.70%) Degree
2 20 (1.86%) Security Cleared
3 19 (1.77%) SC Cleared
4 18 (1.67%) Computer Science Degree
5 2 (0.19%) ISTQB
5 2 (0.19%) Numerate Degree
6 1 (0.093%) AWS Certification
6 1 (0.093%) BPSS Clearance
6 1 (0.093%) DBS Check
6 1 (0.093%) DV Cleared
6 1 (0.093%) ISEB
6 1 (0.093%) Master's Degree
6 1 (0.093%) Microsoft Certification
6 1 (0.093%) SAFe Agilist
Quality Assurance & Compliance
1 69 (6.42%) QA
2 2 (0.19%) Disclosure Scotland
2 2 (0.19%) PSD2
3 1 (0.093%) Data Quality
3 1 (0.093%) GDPR
3 1 (0.093%) WCAG
System Software
1 207 (19.26%) Docker
2 11 (1.02%) HDFS
3 7 (0.65%) VMware Infrastructure
4 6 (0.56%) vSphere
5 5 (0.47%) Active Directory
6 2 (0.19%) Virtual Machines
Systems Management
1 115 (10.70%) Kubernetes
2 66 (6.14%) Ansible
3 62 (5.77%) Puppet
4 61 (5.67%) Opscode Chef
5 43 (4.00%) Terraform
6 12 (1.12%) Kibana
7 10 (0.93%) Docker Swarm
7 10 (0.93%) logstash
8 7 (0.65%) Hadoop YARN
9 6 (0.56%) systemd
10 5 (0.47%) Consul
11 4 (0.37%) Grafana
11 4 (0.37%) Graphite
11 4 (0.37%) ZABBIX
12 3 (0.28%) Single Sign-On
13 2 (0.19%) Fluentd
13 2 (0.19%) Mesos
13 2 (0.19%) Nagios
13 2 (0.19%) Prometheus
14 1 (0.093%) HP Quality Center
Vendors
1 79 (7.35%) Oracle
2 53 (4.93%) Microsoft
3 40 (3.72%) Google
4 23 (2.14%) Atlassian
5 21 (1.95%) Sybase
6 17 (1.58%) Salesforce.com
7 13 (1.21%) Splunk
8 12 (1.12%) Terracotta
9 9 (0.84%) Cadence
10 8 (0.74%) TIBCO
11 7 (0.65%) Apple
11 7 (0.65%) Cloudera
11 7 (0.65%) VMware
12 6 (0.56%) Citrix
12 6 (0.56%) Escenic
13 5 (0.47%) Progress
13 5 (0.47%) ServiceNow
14 4 (0.37%) SaltStack
14 4 (0.37%) Sitecore
15 3 (0.28%) Murex