The following table provides summary statistics for contract job vacancies with a requirement for CQRS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CQRS over the 3 months to 29 April 2017 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.

Command-Query Responsibility Segregation (also Command-Query Separation)
UK
3 months to
29 Apr 2017
Same period 2016 Same period 2015
Rank 524 624 620
Rank change year-on-year +100 -4  
Contract jobs citing CQRS 72 25 22
As % of all contract IT jobs advertised in the UK 0.15% 0.045% 0.039%
As % of the Processes & Methodologies category 0.18% 0.054% 0.049%
Number of daily rates quoted 57 16 14
Median daily rate £500 £405 £406
Median daily rate % change year-on-year +23.45% -0.30%  
90% offered a daily rate of more than £405 £363 £354
10% offered a daily rate of more than £600 £513 £530
UK excluding London median daily rate £500 £375 £400
% change year-on-year +33.33% -6.25%  
Number of hourly rates quoted 0 0 1
Median hourly rate - - £7.69
UK excluding London median hourly rate - - £7.69

CQRS is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for process and methodology skills.

Contract Process & Methodology Skills
UK
Contract job vacancies with a requirement for process and methodology skills 39445 46265 44586
As % of all contract IT job vacancies advertised in the UK 83.70% 82.81% 79.96%
Number of daily rates quoted 25938 30584 27720
Median daily rate £450 £438 £413
Median daily rate % change year-on-year +2.85% +6.06%  
90% offered a daily rate of more than £300 £300 £280
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £415 £400 £390
% change year-on-year +3.75% +2.56%  
Number of hourly rates quoted 1012 1074 1298
Median hourly rate £35.00 £33.00 £29.00
Median hourly rate % change year-on-year +6.06% +13.79%  
90% offered a hourly rate of more than £13.00 £13.00 £12.10
10% offered a hourly rate of more than £55.00 £49.82 £47.84
UK excluding London median hourly rate £37.00 £36.00 £30.50
% change year-on-year +2.77% +18.03%  

CQRS
Job Vacancy Trend

The job posting trend of jobs advertised citing CQRS as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for CQRS in the UK

CQRS
Contractor Daily Rate Trend

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

Contractor daily rate trend for CQRS in the UK

CQRS
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing CQRS over the 3 months to 29 April 2017.

Contractor daily rate histogram for CQRS in the UK

CQRS
Top 14 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CQRS within the UK over the 3 months to 29 April 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +83 70 £500 +23.45% 30
London +78 67 £500 +12.67% 17
City of London - 5 £530 - 5
South East +10 2 £475 +9.19% 6
Croydon +7 2 £400 -9.85%
Surrey +6 2 £475 +26.66% 1
Cardiff - 2 £525 -
South Wales - 2 £525 -
Reigate - 2 £475 - 1
Wales - 2 £525 -
Bromley - 1 - -
Leeds - 1 - - 3
West Yorkshire - 1 - - 3
Yorkshire - 1 - - 3

For the 6 months to 29 April 2017, IT contractor jobs citing CQRS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads with a requirement for CQRS.

1 89 (74.17%) Agile Software Development
2 66 (55.00%) C#
3 65 (54.17%) TDD
4 60 (50.00%) .NET
5 59 (49.17%) AngularJS
6 53 (44.17%) ASP.NET Web API
6 53 (44.17%) Microservices
7 50 (41.67%) JavaScript
8 48 (40.00%) Java
8 48 (40.00%) ASP.NET
9 45 (37.50%) Domain-Driven Design
9 45 (37.50%) BDD
10 36 (30.00%) SQL Server
11 35 (29.17%) Scrum
12 33 (27.50%) Spring
12 33 (27.50%) NoSQL
12 33 (27.50%) Kafka
13 32 (26.67%) DevOps
13 32 (26.67%) RabbitMQ
13 32 (26.67%) E-Commerce
14 31 (25.83%) Akka
15 30 (25.00%) Scala
15 30 (25.00%) SQL
15 30 (25.00%) MVC
16 29 (24.17%) Microsoft Azure
16 29 (24.17%) Greenfield Project
17 26 (21.67%) Hibernate
18 25 (20.83%) HTML
18 25 (20.83%) ASP.NET MVC
19 24 (20.00%) TeamCity

CQRS
Co-occurring IT Skills 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 20 (16.67%) Elasticsearch
2 19 (15.83%) Apache Spark
3 15 (12.50%) NServiceBus
4 4 (3.33%) JBoss
5 3 (2.50%) Apache
6 2 (1.67%) Tomcat
7 1 (0.83%) Apache TomEE
7 1 (0.83%) Confluence
7 1 (0.83%) Jetty
7 1 (0.83%) Mule
7 1 (0.83%) OpenStack
7 1 (0.83%) WebLogic
7 1 (0.83%) WebSphere
7 1 (0.83%) WildFly
Business Applications
1 1 (0.83%) SAP Oil and Gas
Cloud Services
1 29 (24.17%) Microsoft Azure
2 21 (17.50%) Amazon AWS
2 21 (17.50%) GitHub
3 14 (11.67%) Amazon EC2
4 2 (1.67%) PaaS
5 1 (0.83%) IaaS
5 1 (0.83%) SaaS
Communications & Networking
1 19 (15.83%) HTTP
2 11 (9.17%) Internet
3 4 (3.33%) TCP/IP
4 3 (2.50%) AMQP
Database & Business Intelligence
1 36 (30.00%) SQL Server
2 33 (27.50%) NoSQL
3 20 (16.67%) Hadoop
4 18 (15.00%) MongoDB
5 17 (14.17%) Amazon DynamoDB
6 14 (11.67%) PostgreSQL
7 9 (7.50%) Apache Cassandra
8 8 (6.67%) Azure SQL Database
9 6 (5.00%) Apache Hive
9 6 (5.00%) HBase
9 6 (5.00%) MySQL
9 6 (5.00%) Redis
10 4 (3.33%) Event Store
11 3 (2.50%) Relational Database
Development Applications
1 24 (20.00%) TeamCity
2 23 (19.17%) Git (software)
3 22 (18.33%) Octopus Deploy
4 16 (13.33%) Subversion
5 13 (10.83%) SpecFlow
6 8 (6.67%) Atlassian Bamboo
6 8 (6.67%) Hudson
6 8 (6.67%) MSBuild
6 8 (6.67%) Team Foundation Server
6 8 (6.67%) WebDriver
7 7 (5.83%) Jenkins
8 4 (3.33%) JUnit
8 4 (3.33%) Mockito
9 3 (2.50%) JIRA
9 3 (2.50%) Maven
10 2 (1.67%) GitLab
10 2 (1.67%) Grunt
10 2 (1.67%) Karma Test Runner
10 2 (1.67%) Protractor
10 2 (1.67%) webpack
General
1 24 (20.00%) Finance
2 14 (11.67%) Banking
3 3 (2.50%) Private Banking
4 2 (1.67%) Front Office
4 2 (1.67%) Investment Banking
5 1 (0.83%) Electronics
5 1 (0.83%) Law
5 1 (0.83%) Legal
5 1 (0.83%) Local Government
5 1 (0.83%) Manufacturing
5 1 (0.83%) Marketing
5 1 (0.83%) Telecoms
Job Titles
1 101 (84.17%) Developer
2 44 (36.67%) C# Developer
3 39 (32.50%) Java Developer
4 29 (24.17%) .NET Developer
5 27 (22.50%) C# .NET Developer
6 24 (20.00%) Senior Developer
7 20 (16.67%) Azure Developer
8 16 (13.33%) Senior C# Developer
9 15 (12.50%) Scala Developer
10 14 (11.67%) Agile Developer
11 13 (10.83%) AWS Developer
12 12 (10.00%) ASP.NET Developer
12 12 (10.00%) C# ASP.NET Developer
12 12 (10.00%) Full Stack Developer
13 11 (9.17%) Java Scala Developer
14 10 (8.33%) Agile Java Developer
15 9 (7.50%) JavaScript Developer
16 8 (6.67%) Architect
16 8 (6.67%) Senior Agile Developer
16 8 (6.67%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 60 (50.00%) .NET
2 59 (49.17%) AngularJS
3 53 (44.17%) ASP.NET Web API
4 48 (40.00%) ASP.NET
5 33 (27.50%) Kafka
5 33 (27.50%) Spring
6 32 (26.67%) RabbitMQ
7 31 (25.83%) Akka
8 26 (21.67%) Hibernate
9 25 (20.83%) ASP.NET MVC
9 25 (20.83%) HTML
10 22 (18.33%) HTML5
10 22 (18.33%) REST
11 21 (17.50%) Play Framework
11 21 (17.50%) React
12 20 (16.67%) Node.js
12 20 (16.67%) RESTful
13 19 (15.83%) Apache Avro
14 17 (14.17%) CSS
14 17 (14.17%) Ember.js
Miscellaneous
1 29 (24.17%) Greenfield Project
2 21 (17.50%) Blog
3 17 (14.17%) Public Cloud
4 14 (11.67%) User Experience
5 9 (7.50%) Hedge funds
6 8 (6.67%) Online Banking
7 5 (4.17%) Fintech
8 2 (1.67%) Enterprise Software
8 2 (1.67%) W3C
9 1 (0.83%) Client/Server
9 1 (0.83%) Computer Science
9 1 (0.83%) Management Information System
9 1 (0.83%) Mobile App
9 1 (0.83%) NHS
Operating Systems
1 10 (8.33%) Linux
2 3 (2.50%) Unix
3 2 (1.67%) Red Hat Enterprise Linux
4 1 (0.83%) Windows
Processes & Methodologies
1 89 (74.17%) Agile Software Development
2 65 (54.17%) TDD
3 53 (44.17%) Microservices
4 45 (37.50%) BDD
4 45 (37.50%) Domain-Driven Design
5 35 (29.17%) Scrum
6 32 (26.67%) DevOps
6 32 (26.67%) E-Commerce
7 30 (25.00%) MVC
8 21 (17.50%) Continuous Integration
9 20 (16.67%) Automated Testing
10 17 (14.17%) High Availability
10 17 (14.17%) Kanban
11 16 (13.33%) Continuous Improvement
12 15 (12.50%) Pair Programming
13 14 (11.67%) Complex Event Processing
14 12 (10.00%) Software Engineering
14 12 (10.00%) SOLID
15 11 (9.17%) Open Source
16 8 (6.67%) MVVM
Programming Languages
1 66 (55.00%) C#
2 50 (41.67%) JavaScript
3 48 (40.00%) Java
4 30 (25.00%) Scala
4 30 (25.00%) SQL
5 15 (12.50%) Ruby
6 6 (5.00%) PowerShell
6 6 (5.00%) T-SQL
7 4 (3.33%) C++
7 4 (3.33%) TypeScript
8 2 (1.67%) PHP
8 2 (1.67%) PL/SQL
9 1 (0.83%) Bash Shell
9 1 (0.83%) ES6
9 1 (0.83%) Python
9 1 (0.83%) VBScript
Qualifications
1 5 (4.17%) SC Cleared
1 5 (4.17%) Security Cleared
2 1 (0.83%) Degree
Quality Assurance & Compliance
1 14 (11.67%) QA
System Software
1 19 (15.83%) Apache Flume
2 4 (3.33%) Docker
Systems Management
1 21 (17.50%) Opscode Chef
2 7 (5.83%) Ansible
2 7 (5.83%) Puppet
3 2 (1.67%) Kubernetes
3 2 (1.67%) logstash
3 2 (1.67%) Marathon
4 1 (0.83%) Mesos
Vendors
1 14 (11.67%) Microsoft
2 4 (3.33%) Oracle
3 2 (1.67%) Red Hat
3 2 (1.67%) SAP
3 2 (1.67%) Splunk
3 2 (1.67%) Xamarin
4 1 (0.83%) Atlassian
4 1 (0.83%) BEA
4 1 (0.83%) IBM
4 1 (0.83%) Perforce
City, London
Huxley Associates
Rate: competitive
Posted: Yesterday
London
Avion Recruitment Solutions
Rate: £500 - £575 per day
Posted: 3 days ago
Bristol, Avon
Talent International
Rate: £0.00 per annum
Posted: 4 days ago