The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Grails skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Grails over the 3 months to 30 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.

Grails
London / City of London
3 months to
30 Apr 2017
Same period 2016 Same period 2015
Rank 163 149 193
Rank change year-on-year -14 +44  
Contract jobs citing Grails 2 6 5
As % of all contract IT jobs advertised in the City of London 0.062% 0.17% 0.091%
As % of the Libraries, Frameworks & Software Standards category 0.17% 0.53% 0.30%
Number of daily rates quoted 2 6 3
Median daily rate £413 £475 £500
Median daily rate % change year-on-year -13.15% -5.00%  
UK excluding London median daily rate £420 £325 £418
% change year-on-year +29.23% -22.15%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Grails is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
City of London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 1153 1136 1651
As % of all contract IT job vacancies advertised in the City of London 36.02% 32.53% 30.01%
Number of daily rates quoted 937 964 1307
Median daily rate £475 £475 £425
Median daily rate % change year-on-year - +11.76%  
90% offered a daily rate of more than £338 £325 £320
10% offered a daily rate of more than £600 £600 £600
UK excluding London median daily rate £375 £375 £350
% change year-on-year - +7.14%  
Number of hourly rates quoted 5 3 10
Median hourly rate £26.80 £22.00 £19.72
Median hourly rate % change year-on-year +21.81% +11.59%  
90% offered a hourly rate of more than £24.86 £16.52 £17.99
10% offered a hourly rate of more than £35.00 £34.94 £60.00
UK excluding London median hourly rate £42.50 £35.00 £37.00
% change year-on-year +21.42% -5.40%  

Grails
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Grails as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for Grails in the City of London

Grails
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Grails in the City of London

For the 6 months to 30 April 2017, IT contractor jobs citing Grails 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 City of London region with a requirement for Grails.

1 3 (100.00%) HTML
1 3 (100.00%) Java
1 3 (100.00%) JavaScript
1 3 (100.00%) CSS
1 3 (100.00%) PostgreSQL
2 2 (66.67%) Scrum
2 2 (66.67%) Continuous Integration
2 2 (66.67%) Groovy
2 2 (66.67%) RESTful
2 2 (66.67%) Mercurial
2 2 (66.67%) Agile Software Development
2 2 (66.67%) Linux
2 2 (66.67%) Apache
2 2 (66.67%) Tomcat
2 2 (66.67%) MySQL
2 2 (66.67%) Relational Database
2 2 (66.67%) JUnit
3 1 (33.33%) Docker
3 1 (33.33%) Microservices
3 1 (33.33%) Kubernetes
3 1 (33.33%) Spring Boot
3 1 (33.33%) Fintech
3 1 (33.33%) Ant
3 1 (33.33%) SOA
3 1 (33.33%) TDD
3 1 (33.33%) ActiveMQ
3 1 (33.33%) Subversion
3 1 (33.33%) Spring
3 1 (33.33%) Spring Security
3 1 (33.33%) jQuery

Grails
Co-occurring IT Skills in the City of 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 2 (66.67%) Apache
1 2 (66.67%) Tomcat
Database & Business Intelligence
1 3 (100.00%) PostgreSQL
2 2 (66.67%) MySQL
2 2 (66.67%) Relational Database
3 1 (33.33%) Big Data
3 1 (33.33%) Hadoop
3 1 (33.33%) HBase
Development Applications
1 2 (66.67%) JUnit
1 2 (66.67%) Mercurial
2 1 (33.33%) Ant
2 1 (33.33%) Git (software)
2 1 (33.33%) Subversion
Job Titles
1 3 (100.00%) Developer
1 3 (100.00%) Java Developer
2 1 (33.33%) Java Software Developer
2 1 (33.33%) SC Cleared Java Developer
2 1 (33.33%) Software Developer
Libraries, Frameworks & Software Standards
1 3 (100.00%) CSS
1 3 (100.00%) HTML
2 2 (66.67%) RESTful
3 1 (33.33%) ActiveMQ
3 1 (33.33%) AngularJS
3 1 (33.33%) Apache Camel
3 1 (33.33%) CSS3
3 1 (33.33%) HTML5
3 1 (33.33%) jQuery
3 1 (33.33%) LESS
3 1 (33.33%) REST
3 1 (33.33%) Spring
3 1 (33.33%) Spring Boot
3 1 (33.33%) Spring Security
Miscellaneous
1 1 (33.33%) Fintech
Operating Systems
1 2 (66.67%) Linux
Processes & Methodologies
1 2 (66.67%) Agile Software Development
1 2 (66.67%) Continuous Integration
1 2 (66.67%) Scrum
2 1 (33.33%) BDD
2 1 (33.33%) Microservices
2 1 (33.33%) MVC
2 1 (33.33%) SOA
2 1 (33.33%) TDD
2 1 (33.33%) Visualisation
Programming Languages
1 3 (100.00%) Java
1 3 (100.00%) JavaScript
2 2 (66.67%) Groovy
Qualifications
1 1 (33.33%) SC Cleared
1 1 (33.33%) Security Cleared
System Software
1 1 (33.33%) Docker
Systems Management
1 1 (33.33%) Kubernetes