Period
to 18 January 2018

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 6 months to 18 January 2018 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
6 months to
18 Jan 2018
Same period 2017 Same period 2016
Rank 539 751 822
Rank change year-on-year +212 +71 -9
Contract jobs citing CQRS 360 119 59
As % of all contract IT jobs advertised in the UK 0.36% 0.12% 0.055%
As % of the Processes & Methodologies category 0.42% 0.15% 0.067%
Number of daily rates quoted 284 96 31
UK median daily rate £525 £475 £500
Median daily rate % change year-on-year +10.53% -5.00% -
10th Percentile £413 £354 £325
90th Percentile £650 £575 £625
UK excluding London median daily rate £520 £450 £330
% change year-on-year +15.56% +36.36% -34.00%
Number of hourly rates quoted 0 0 0
UK median hourly rate - - -
UK excluding London 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 with a requirement for process or methodology skills.

All Process and Methodology Skills
UK
Contract vacancies with a requirement for process or methodology skills 84,751 81,431 88,505
As % of all contract IT jobs advertised in the UK 84.50% 83.80% 82.46%
Number of daily rates quoted 56,763 53,927 57,391
UK median daily rate £450 £425 £425
Median daily rate % change year-on-year +5.88% - +6.25%
10th Percentile £285 £263 £263
90th Percentile £638 £613 £600
UK excluding London median daily rate £410 £400 £390
% change year-on-year +2.50% +2.56% +4.00%
Number of hourly rates quoted 1,966 2,259 2,698
UK median hourly rate £23.44 £24.50 £23.35
Median hourly rate % change year-on-year -4.34% +4.93% +16.75%
10th Percentile £11.38 £11.25 £11.25
90th Percentile £50.00 £48.75 £50.00
UK excluding London median hourly rate £24.00 £24.50 £25.00
% change year-on-year -2.04% -2.00% +25.00%

CQRS
Job Vacancy Trend

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

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 6 months to 18 January 2018.

Contractor daily rate histogram for CQRS in the UK

CQRS
Top 13 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 6 months to 18 January 2018. 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
England +197 315 £525 +10.53% 48
London +166 291 £525 +5.00% 27
UK excluding London +25 69 £520 +15.56% 25
Wales +44 45 £550 +18.92% 2
North of England +46 9 £375 -21.05% 3
South West +11 7 £475 +5.56% 1
North West - 7 £375 - 2
Midlands -2 4 £450 +24.14% 4
South East -34 3 £338 -28.95% 10
West Midlands -2 2 £425 +17.24% 1
North East - 2 - -
East Midlands - 2 £538 - 3
East of England - 1 £550 - 3

For the 6 months to 18 January 2018, 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.

1 310 (86.11%) Agile Software Development
2 215 (59.72%) Domain-Driven Design
3 211 (58.61%) Java
4 207 (57.50%) Microservices
5 175 (48.61%) RESTful
6 158 (43.89%) Git (software)
6 158 (43.89%) JavaScript
7 150 (41.67%) C#
8 149 (41.39%) .NET
9 134 (37.22%) BDD
10 131 (36.39%) Scrum
11 130 (36.11%) AngularJS
12 128 (35.56%) TDD
13 125 (34.72%) Amazon AWS
14 122 (33.89%) DevOps
15 120 (33.33%) NoSQL
16 110 (30.56%) Node.js
17 104 (28.89%) JMS
18 102 (28.33%) React
19 100 (27.78%) Continuous Integration
20 99 (27.50%) MVC
21 95 (26.39%) ASP.NET
22 92 (25.56%) ASP.NET Web API
23 91 (25.28%) Open Source
24 90 (25.00%) REST
25 87 (24.17%) OO
26 85 (23.61%) JUnit
26 85 (23.61%) Mockito
27 82 (22.78%) Test Automation
28 81 (22.50%) WireMock

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 69 (19.17%) WildFly
2 66 (18.33%) Confluence
3 45 (12.50%) NServiceBus
4 39 (10.83%) Elasticsearch
5 8 (2.22%) IIS
5 8 (2.22%) Tomcat
6 4 (1.11%) OpenStack
7 2 (0.56%) Apache ServiceMix
7 2 (0.56%) Apache Solr
7 2 (0.56%) CMS
7 2 (0.56%) Sitecore CMS
8 1 (0.28%) JBoss
8 1 (0.28%) WebSphere
Business Applications
1 8 (2.22%) Dynamics CRM
Cloud Services
1 125 (34.72%) Amazon AWS
2 79 (21.94%) Microsoft Azure
3 41 (11.39%) PaaS
4 38 (10.56%) GitHub
5 35 (9.72%) Serverless
6 11 (3.06%) Google Play
7 9 (2.50%) Amazon EC2
8 4 (1.11%) Google Analytics
9 3 (0.83%) Google Cloud Platform
10 2 (0.56%) Amazon S3
10 2 (0.56%) AWS Elastic Beanstalk
10 2 (0.56%) IaaS
10 2 (0.56%) SaaS
11 1 (0.28%) Amazon SQS
11 1 (0.28%) Heroku
11 1 (0.28%) iPaaS
Communications & Networking
1 3 (0.83%) DNS
2 1 (0.28%) FIX Connectivity
2 1 (0.28%) FTP
2 1 (0.28%) HTTP
2 1 (0.28%) SSL
2 1 (0.28%) TCP/IP
Database & Business Intelligence
1 120 (33.33%) NoSQL
2 74 (20.56%) Relational Database
3 68 (18.89%) PostgreSQL
4 66 (18.33%) MongoDB
5 64 (17.78%) RDBMS
6 34 (9.44%) SQL Server
7 19 (5.28%) MySQL
8 17 (4.72%) Amazon DynamoDB
9 15 (4.17%) RavenDB
10 14 (3.89%) Apache Cassandra
11 11 (3.06%) JanusGraph
11 11 (3.06%) Neo4j
11 11 (3.06%) Redis
12 9 (2.50%) Event Store
13 8 (2.22%) Hadoop
14 5 (1.39%) Azure SQL Database
15 4 (1.11%) SQL Server Integration Services
16 2 (0.56%) HBase
16 2 (0.56%) SQL Server 2012
17 1 (0.28%) Oracle Database
Development Applications
1 158 (43.89%) Git (software)
2 85 (23.61%) JUnit
2 85 (23.61%) Mockito
3 73 (20.28%) Maven
4 67 (18.61%) JIRA
4 67 (18.61%) SonarQube
5 65 (18.06%) Vagrant
6 63 (17.50%) Liquibase
7 62 (17.22%) Checkstyle
8 46 (12.78%) TeamCity
9 40 (11.11%) Octopus Deploy
10 30 (8.33%) Jenkins
11 27 (7.50%) SpecFlow
12 25 (6.94%) Subversion
13 14 (3.89%) Atlassian Bamboo
13 14 (3.89%) Hudson
14 13 (3.61%) MSBuild
15 12 (3.33%) Cucumber
16 10 (2.78%) Protractor
17 9 (2.50%) Selenium
General
1 69 (19.17%) Finance
2 40 (11.11%) Banking
3 31 (8.61%) Retail
4 8 (2.22%) Publishing
5 6 (1.67%) Electronics
5 6 (1.67%) Manufacturing
5 6 (1.67%) Marketing
5 6 (1.67%) Telecoms
6 3 (0.83%) Local Government
7 1 (0.28%) Advertising
7 1 (0.28%) Front Office
Job Titles
1 314 (87.22%) Developer
2 149 (41.39%) Java Developer
3 90 (25.00%) .NET Developer
4 85 (23.61%) C# Developer
5 76 (21.11%) Senior Developer
6 58 (16.11%) Full Stack Developer
7 46 (12.78%) Senior .NET Developer
8 44 (12.22%) SC Cleared Java Developer
9 41 (11.39%) C# .NET Developer
10 39 (10.83%) Senior C# Developer
11 28 (7.78%) JavaScript Developer
12 26 (7.22%) AWS Developer
13 24 (6.67%) ASP.NET Developer
13 24 (6.67%) C# ASP.NET Developer
14 23 (6.39%) Angular Developer
15 22 (6.11%) Lead Developer
16 21 (5.83%) Senior C# .NET Developer
17 19 (5.28%) Node.js Developer
18 18 (5.00%) E-Commerce Developer
19 17 (4.72%) Senior Full Stack Developer
Libraries, Frameworks & Software Standards
1 175 (48.61%) RESTful
2 149 (41.39%) .NET
3 130 (36.11%) AngularJS
4 110 (30.56%) Node.js
5 104 (28.89%) JMS
6 102 (28.33%) React
7 95 (26.39%) ASP.NET
8 92 (25.56%) ASP.NET Web API
9 90 (25.00%) REST
10 81 (22.50%) WireMock
11 80 (22.22%) JAX-RS
12 77 (21.39%) Web Services
13 69 (19.17%) Java EE
14 65 (18.06%) Drools
15 62 (17.22%) Hibernate
15 62 (17.22%) Lambda Expressions
16 59 (16.39%) CSS
16 59 (16.39%) HTML
17 53 (14.72%) ASP.NET MVC
18 48 (13.33%) Dropwizard
Miscellaneous
1 62 (17.22%) Linux Command Line
2 47 (13.06%) Public Cloud
3 46 (12.78%) Greenfield Project
4 43 (11.94%) Fintech
5 33 (9.17%) Blog
6 25 (6.94%) Hedge funds
7 24 (6.67%) Online Banking
8 15 (4.17%) Analytical Skills
9 14 (3.89%) Foreign Exchange (FX)
10 11 (3.06%) Mobile App
11 10 (2.78%) User Experience
12 4 (1.11%) Computer Science
13 3 (0.83%) Enterprise Software
14 1 (0.28%) Spread Betting
Operating Systems
1 65 (18.06%) VMS
2 63 (17.50%) Unix
3 16 (4.44%) Linux
4 11 (3.06%) Android
4 11 (3.06%) Apple iOS
5 6 (1.67%) Windows
6 1 (0.28%) CoreOS
Processes & Methodologies
1 310 (86.11%) Agile Software Development
2 215 (59.72%) Domain-Driven Design
3 207 (57.50%) Microservices
4 134 (37.22%) BDD
5 131 (36.39%) Scrum
6 128 (35.56%) TDD
7 122 (33.89%) DevOps
8 100 (27.78%) Continuous Integration
9 99 (27.50%) MVC
10 91 (25.28%) Open Source
11 87 (24.17%) OO
12 82 (22.78%) Test Automation
13 65 (18.06%) Dependency Injection
14 62 (17.22%) OOA/OOD
15 57 (15.83%) E-Commerce
16 56 (15.56%) Software Engineering
17 46 (12.78%) SOLID
18 33 (9.17%) High Availability
19 29 (8.06%) Continuous Improvement
20 26 (7.22%) Complex Event Processing
Programming Languages
1 211 (58.61%) Java
2 158 (43.89%) JavaScript
3 150 (41.67%) C#
4 66 (18.33%) SQL
5 62 (17.22%) JPQL
6 35 (9.72%) Python
7 19 (5.28%) GraphQL
8 17 (4.72%) PowerShell
9 13 (3.61%) TypeScript
10 11 (3.06%) ES6
10 11 (3.06%) Objective-C
11 4 (1.11%) C
12 2 (0.56%) Groovy
12 2 (0.56%) Scala
13 1 (0.28%) PL/SQL
13 1 (0.28%) Ruby
13 1 (0.28%) Shell Script
Qualifications
1 79 (21.94%) Security Cleared
2 63 (17.50%) SC Cleared
3 26 (7.22%) BPSS Clearance
4 6 (1.67%) Degree
5 4 (1.11%) Computer Science Degree
6 2 (0.56%) BC Cleared
6 2 (0.56%) DV Cleared
6 2 (0.56%) Sun Certification
7 1 (0.28%) DBS Check
Quality Assurance & Compliance
1 10 (2.78%) QA
2 5 (1.39%) Disclosure Scotland
System Software
1 13 (3.61%) Docker
Systems Management
1 31 (8.61%) Ansible
2 14 (3.89%) Opscode Chef
3 12 (3.33%) ZABBIX
4 10 (2.78%) Puppet
5 8 (2.22%) Nagios
6 5 (1.39%) Kibana
6 5 (1.39%) Kubernetes
6 5 (1.39%) Terraform
7 1 (0.28%) Docker Swarm
Vendors
1 34 (9.44%) Microsoft
2 18 (5.00%) Google
3 11 (3.06%) Apple
4 8 (2.22%) AppDynamics
4 8 (2.22%) New Relic
4 8 (2.22%) Salesforce.com
4 8 (2.22%) Splunk
5 7 (1.94%) SAP
6 6 (1.67%) Apigee
6 6 (1.67%) Oracle
7 4 (1.11%) Red Hat
8 2 (0.56%) IBM
8 2 (0.56%) Sitecore
9 1 (0.28%) Capita
9 1 (0.28%) Reuters