Period
to 23 November 2017

The following table provides summary statistics for contract job vacancies advertised in London with a requirement for CQRS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CQRS over the 6 months to 23 November 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)
England > London
6 months to
23 Nov 2017
Same period 2016 Same period 2015
Rank 379 536 594
Rank change year-on-year +157 +58 -24
Contract jobs citing CQRS 275 83 35
As % of all contract IT jobs advertised in London 0.58% 0.18% 0.075%
As % of the Processes & Methodologies category 0.67% 0.21% 0.090%
Number of daily rates quoted 221 71 19
London median daily rate £525 £475 £500
Median daily rate % change year-on-year +10.53% -5.00% -
10th Percentile £406 £400 £445
90th Percentile £638 £550 £625
England median daily rate £513 £475 £500
% change year-on-year +7.89% -5.00% -
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate - - -

CQRS 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 London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Contract vacancies with a requirement for process or methodology skills 40964 38955 39069
As % of all contract IT jobs advertised in London 86.95% 86.20% 83.83%
Number of daily rates quoted 29788 27920 27910
London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +2.86%
10th Percentile £313 £306 £288
90th Percentile £675 £643 £638
England median daily rate £450 £425 £425
% change year-on-year +5.88% - +6.25%
Number of hourly rates quoted 382 408 469
London median hourly rate £22.50 £21.77 £20.00
Median hourly rate % change year-on-year +3.38% +8.83% +11.11%
10th Percentile £13.32 £12.25 £11.25
90th Percentile £53.45 £50.04 £50.00
England median hourly rate £24.00 £24.00 £22.50
% change year-on-year - +6.67% +18.42%

CQRS
Job Vacancy Trend in London

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

Job vacancy trend for CQRS in London

CQRS
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for CQRS in London

CQRS
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing CQRS in London over the 6 months to 23 November 2017.

Contractor daily rate histogram for CQRS in London

CQRS
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CQRS within the London region over the 6 months to 23 November 2017. 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
South London +25 60 £530 +13.07%
Central London +18 26 £530 +11.58% 3
West London -1 4 £518 +13.74% 1
East London - 1 £625 - 1
CQRS
England

For the 6 months to 23 November 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 across the London region with a requirement for CQRS.

1 229 (83.27%) Agile Software Development
2 170 (61.82%) Domain-Driven Design
3 163 (59.27%) Microservices
4 145 (52.73%) Java
5 131 (47.64%) .NET
6 125 (45.45%) AngularJS
7 119 (43.27%) RESTful
7 119 (43.27%) C#
8 116 (42.18%) BDD
9 115 (41.82%) Scrum
10 109 (39.64%) TDD
11 108 (39.27%) JavaScript
12 105 (38.18%) Git (software)
13 91 (33.09%) React
14 87 (31.64%) NoSQL
15 86 (31.27%) JMS
15 86 (31.27%) MVC
16 80 (29.09%) Test Automation
17 77 (28.00%) Mockito
17 77 (28.00%) REST
17 77 (28.00%) OO
17 77 (28.00%) JUnit
17 77 (28.00%) ASP.NET Web API
18 76 (27.64%) ASP.NET
19 74 (26.91%) DevOps
20 73 (26.55%) WireMock
20 73 (26.55%) Continuous Integration
21 71 (25.82%) JAX-RS
22 65 (23.64%) Amazon AWS
23 61 (22.18%) Maven

CQRS
Co-occurring IT Skills in 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 58 (21.09%) Confluence
2 53 (19.27%) WildFly
3 44 (16.00%) NServiceBus
4 34 (12.36%) Elasticsearch
5 9 (3.27%) Tomcat
6 8 (2.91%) IIS
7 4 (1.45%) OpenStack
8 3 (1.09%) Mule
9 2 (0.73%) Alfresco
9 2 (0.73%) Apache ServiceMix
9 2 (0.73%) Apache Solr
9 2 (0.73%) Apache Spark
9 2 (0.73%) CMS
9 2 (0.73%) JBoss
9 2 (0.73%) Sitecore CMS
10 1 (0.36%) Apache
10 1 (0.36%) WebSphere
Business Applications
1 8 (2.91%) Dynamics CRM
Cloud Services
1 65 (23.64%) Amazon AWS
2 58 (21.09%) Microsoft Azure
3 29 (10.55%) GitHub
4 10 (3.64%) Google Play
5 8 (2.91%) Amazon EC2
6 4 (1.45%) Heroku
7 1 (0.36%) Amazon SQS
7 1 (0.36%) Cloud Computing
7 1 (0.36%) npm
7 1 (0.36%) PaaS
7 1 (0.36%) Serverless
Communications & Networking
1 6 (2.18%) DNS
2 5 (1.82%) HTTP
3 4 (1.45%) FTP
3 4 (1.45%) SSL
3 4 (1.45%) TCP/IP
4 1 (0.36%) Internet
Database & Business Intelligence
1 87 (31.64%) NoSQL
2 61 (22.18%) Relational Database
3 59 (21.45%) MongoDB
4 54 (19.64%) RDBMS
5 45 (16.36%) PostgreSQL
6 19 (6.91%) SQL Server
7 17 (6.18%) Amazon DynamoDB
8 16 (5.82%) RavenDB
9 14 (5.09%) MySQL
10 13 (4.73%) Apache Cassandra
10 13 (4.73%) Hadoop
11 11 (4.00%) Redis
12 10 (3.64%) Neo4j
13 2 (0.73%) DocumentDB
13 2 (0.73%) HBase
14 1 (0.36%) Apache Hive
Development Applications
1 105 (38.18%) Git (software)
2 77 (28.00%) JUnit
2 77 (28.00%) Mockito
3 61 (22.18%) Maven
4 58 (21.09%) JIRA
5 57 (20.73%) SonarQube
6 56 (20.36%) Vagrant
7 52 (18.91%) Checkstyle
7 52 (18.91%) Liquibase
7 52 (18.91%) TeamCity
8 44 (16.00%) Octopus Deploy
9 32 (11.64%) SpecFlow
10 25 (9.09%) Subversion
11 24 (8.73%) Jenkins
12 14 (5.09%) Protractor
13 12 (4.36%) Atlassian Bamboo
13 12 (4.36%) Hudson
13 12 (4.36%) MSBuild
14 10 (3.64%) Cucumber
14 10 (3.64%) JMeter
General
1 61 (22.18%) Finance
2 37 (13.45%) Banking
3 24 (8.73%) Retail
4 7 (2.55%) Publishing
5 2 (0.73%) Electronics
5 2 (0.73%) Manufacturing
5 2 (0.73%) Marketing
5 2 (0.73%) Telecoms
6 1 (0.36%) Advertising
6 1 (0.36%) Front Office
6 1 (0.36%) Local Government
Job Titles
1 237 (86.18%) Developer
2 102 (37.09%) Java Developer
3 76 (27.64%) C# Developer
4 70 (25.45%) .NET Developer
5 60 (21.82%) Full Stack Developer
6 52 (18.91%) Senior Developer
7 34 (12.36%) Angular Developer
7 34 (12.36%) Senior C# Developer
8 33 (12.00%) C# .NET Developer
9 29 (10.55%) SC Cleared Java Developer
9 29 (10.55%) Senior .NET Developer
10 25 (9.09%) Lead Developer
11 21 (7.64%) AWS Developer
12 18 (6.55%) Azure Developer
12 18 (6.55%) Senior C# .NET Developer
13 17 (6.18%) E-Commerce Developer
14 16 (5.82%) JavaScript Developer
15 15 (5.45%) ASP.NET Developer
15 15 (5.45%) C# ASP.NET Developer
15 15 (5.45%) Senior E-Commerce Developer
Libraries, Frameworks & Software Standards
1 131 (47.64%) .NET
2 125 (45.45%) AngularJS
3 119 (43.27%) RESTful
4 91 (33.09%) React
5 86 (31.27%) JMS
6 77 (28.00%) ASP.NET Web API
6 77 (28.00%) REST
7 76 (27.64%) ASP.NET
8 73 (26.55%) WireMock
9 71 (25.82%) JAX-RS
10 58 (21.09%) Java EE
11 56 (20.36%) Hibernate
11 56 (20.36%) Node.js
12 55 (20.00%) Drools
13 52 (18.91%) Lambda Expressions
14 48 (17.45%) Redux
15 43 (15.64%) RabbitMQ
16 37 (13.45%) Kafka
17 34 (12.36%) ASP.NET MVC
18 29 (10.55%) Web Services
Miscellaneous
1 55 (20.00%) Greenfield Project
2 52 (18.91%) Linux Command Line
3 36 (13.09%) Fintech
4 26 (9.45%) Public Cloud
5 25 (9.09%) Hedge funds
6 23 (8.36%) Blog
7 16 (5.82%) Foreign Exchange (FX)
8 13 (4.73%) Online Banking
9 12 (4.36%) Analytical Skills
10 11 (4.00%) User Experience
11 10 (3.64%) Mobile App
12 7 (2.55%) Computer Science
13 4 (1.45%) Enterprise Software
Operating Systems
1 55 (20.00%) VMS
2 52 (18.91%) Unix
3 19 (6.91%) Linux
4 10 (3.64%) Android
4 10 (3.64%) Apple iOS
5 6 (2.18%) Windows
6 4 (1.45%) CoreOS
Processes & Methodologies
1 229 (83.27%) Agile Software Development
2 170 (61.82%) Domain-Driven Design
3 163 (59.27%) Microservices
4 116 (42.18%) BDD
5 115 (41.82%) Scrum
6 109 (39.64%) TDD
7 86 (31.27%) MVC
8 80 (29.09%) Test Automation
9 77 (28.00%) OO
10 74 (26.91%) DevOps
11 73 (26.55%) Continuous Integration
12 57 (20.73%) Software Engineering
13 55 (20.00%) Dependency Injection
14 52 (18.91%) OOA/OOD
15 50 (18.18%) SOLID
16 39 (14.18%) E-Commerce
17 32 (11.64%) Pair Programming
18 31 (11.27%) Open Source
19 25 (9.09%) Complex Event Processing
20 23 (8.36%) High Availability
Programming Languages
1 145 (52.73%) Java
2 119 (43.27%) C#
3 108 (39.27%) JavaScript
4 52 (18.91%) JPQL
5 32 (11.64%) SQL
6 20 (7.27%) PowerShell
7 18 (6.55%) GraphQL
8 12 (4.36%) TypeScript
9 11 (4.00%) ES6
10 10 (3.64%) Objective-C
11 7 (2.55%) Scala
12 6 (2.18%) PL/SQL
12 6 (2.18%) Ruby
13 4 (1.45%) Groovy
14 3 (1.09%) T-SQL
15 2 (0.73%) Python
15 2 (0.73%) VBScript
16 1 (0.36%) Bash Shell
16 1 (0.36%) C
Qualifications
1 46 (16.73%) Security Cleared
2 32 (11.64%) SC Cleared
3 10 (3.64%) BPSS Clearance
4 9 (3.27%) Degree
5 7 (2.55%) Computer Science Degree
6 1 (0.36%) BC Cleared
Quality Assurance & Compliance
1 6 (2.18%) QA
2 1 (0.36%) Disclosure Scotland
System Software
1 12 (4.36%) Docker
2 1 (0.36%) Apache Flume
Systems Management
1 28 (10.18%) Ansible
2 17 (6.18%) Opscode Chef
3 16 (5.82%) Puppet
4 12 (4.36%) ZABBIX
5 8 (2.91%) Nagios
6 6 (2.18%) Kibana
6 6 (2.18%) Terraform
7 4 (1.45%) Docker Swarm
7 4 (1.45%) Kubernetes
Vendors
1 29 (10.55%) Microsoft
2 10 (3.64%) Apple
2 10 (3.64%) Google
3 8 (2.91%) AppDynamics
3 8 (2.91%) New Relic
3 8 (2.91%) Salesforce.com
3 8 (2.91%) Splunk
4 6 (2.18%) Apigee
5 5 (1.82%) Oracle
6 4 (1.45%) Red Hat
7 2 (0.73%) Atlassian
7 2 (0.73%) SAP
7 2 (0.73%) Sitecore
8 1 (0.36%) Cadence
8 1 (0.36%) Capita
8 1 (0.36%) IBM