The following table provides summary statistics for contract job vacancies 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 29 March 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
UK
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 576 559 589
Rank change year-on-year -17 +30  
Contract jobs citing Grails 29 89 36
As % of all contract IT jobs advertised in the UK 0.064% 0.17% 0.067%
As % of the Libraries, Frameworks & Software Standards category 0.20% 0.59% 0.25%
Number of daily rates quoted 24 48 29
Median daily rate £406 £475 £475
Median daily rate % change year-on-year -14.47% -  
90% offered a daily rate of more than £347 £325 £421
10% offered a daily rate of more than £525 £550 £530
UK excluding London median daily rate £350 £325 £350
% change year-on-year +7.69% -7.14%  
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 with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
UK
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 14232 15083 14189
As % of all contract IT job vacancies advertised in the UK 31.46% 28.02% 26.55%
Number of daily rates quoted 9874 10486 9196
Median daily rate £425 £400 £388
Median daily rate % change year-on-year +6.25% +3.22%  
90% offered a daily rate of more than £300 £300 £275
10% offered a daily rate of more than £565 £550 £550
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 182 224 188
Median hourly rate £42.50 £38.75 £35.00
Median hourly rate % change year-on-year +9.67% +10.71%  
90% offered a hourly rate of more than £16.55 £13.00 £19.00
10% offered a hourly rate of more than £55.00 £60.62 £46.50
UK excluding London median hourly rate £41.00 £38.00 £36.00
% change year-on-year +7.89% +5.55%  

Grails
Job Vacancy Trend

The job posting trend of jobs advertised 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 UK

Grails
Contractor Daily Rate Trend

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

Contractor daily rate trend for Grails in the UK

Grails
Contractor Daily Rate Histogram

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

Contractor daily rate histogram for Grails in the UK

Grails
Contractor Hourly Rate Trend

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Grails.

Contractor hourly rate trend for Grails in the UK

Grails
Top 15 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Grails within the UK over the 3 months to 29 March 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 -11 28 £400 -16.88% 8
London -25 16 £525 +7.69% 4
South East +24 10 £350 -
Milton Keynes - 10 £350 -
Buckinghamshire - 10 £350 -
City of London -7 2 £413 -15.38% 1
Isleworth - 2 - -
Cardiff +24 1 £425 +6.25%
South Wales +15 1 £425 +6.25%
Wales +8 1 £425 +6.25%
Yorkshire - 1 £420 - 2
Birmingham - 1 £363 -
West Midlands - 1 £363 - 1
Leeds - 1 £420 -
West Yorkshire - 1 £420 - 2

For the 6 months to 29 March 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 with a requirement for Grails.

1 88 (98.88%) Java
2 73 (82.02%) Spring
3 69 (77.53%) Groovy
4 56 (62.92%) JavaScript
5 55 (61.80%) XML
6 49 (55.06%) Git (software)
7 38 (42.70%) REST
8 37 (41.57%) Agile Software Development
9 36 (40.45%) SQL
10 35 (39.33%) Maven
11 33 (37.08%) Gradle
12 29 (32.58%) Jenkins
13 27 (30.34%) Docker
13 27 (30.34%) PostgreSQL
13 27 (30.34%) Hibernate
14 26 (29.21%) Linux
15 25 (28.09%) Open Source
15 25 (28.09%) Continuous Delivery
16 24 (26.97%) HTML
17 23 (25.84%) TDD
17 23 (25.84%) RabbitMQ
17 23 (25.84%) AngularJS
18 21 (23.60%) Continuous Integration
18 21 (23.60%) MVC
18 21 (23.60%) JMS
19 20 (22.47%) Oracle
19 20 (22.47%) Apache Camel
20 19 (21.35%) Microservices
20 19 (21.35%) Web Services
20 19 (21.35%) Atlassian Bamboo

Grails
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 14 (15.73%) Elasticsearch
2 11 (12.36%) Tomcat
3 9 (10.11%) Apache
4 8 (8.99%) Oracle SOA Suite
5 7 (7.87%) nginx
6 5 (5.62%) CMS
6 5 (5.62%) Confluence
6 5 (5.62%) WebLogic
7 2 (2.25%) Apache Solr
8 1 (1.12%) Mule
8 1 (1.12%) Mule ESB
Business Applications
1 8 (8.99%) Oracle BPM
Cloud Services
1 9 (10.11%) Cloud Computing
2 7 (7.87%) Amazon AWS
3 5 (5.62%) IaaS
3 5 (5.62%) PaaS
4 4 (4.49%) Amazon ElastiCache
Communications & Networking
1 7 (7.87%) HTTP
2 3 (3.37%) AMQP
3 1 (1.12%) Firewall
3 1 (1.12%) Internet
Database & Business Intelligence
1 27 (30.34%) PostgreSQL
2 13 (14.61%) MySQL
3 9 (10.11%) MongoDB
3 9 (10.11%) Relational Database
4 5 (5.62%) Hadoop
4 5 (5.62%) HBase
4 5 (5.62%) Neo4j
5 4 (4.49%) NoSQL
6 3 (3.37%) Hazelcast
7 1 (1.12%) Big Data
7 1 (1.12%) Couchbase
7 1 (1.12%) CouchDB
Development Applications
1 49 (55.06%) Git (software)
2 35 (39.33%) Maven
3 33 (37.08%) Gradle
4 29 (32.58%) Jenkins
5 19 (21.35%) Atlassian Bamboo
6 16 (17.98%) JUnit
7 14 (15.73%) Ant
8 13 (14.61%) Mockito
9 9 (10.11%) JIRA
9 9 (10.11%) Spock
10 6 (6.74%) Bitbucket
10 6 (6.74%) IntelliJ
11 5 (5.62%) Eclipse
12 4 (4.49%) Mercurial
12 4 (4.49%) Sonatype Nexus
13 3 (3.37%) Subversion
14 2 (2.25%) Jasmine
14 2 (2.25%) Mocha
14 2 (2.25%) Protractor
15 1 (1.12%) GitLab
General
1 6 (6.74%) Finance
1 6 (6.74%) Games
2 1 (1.12%) Publishing
Job Titles
1 86 (96.63%) Developer
2 83 (93.26%) Java Developer
3 15 (16.85%) Senior Developer
3 15 (16.85%) Senior Java Developer
4 7 (7.87%) Full Stack Developer
5 6 (6.74%) JavaScript Developer
6 5 (5.62%) Agile Developer
6 5 (5.62%) Agile Java Developer
6 5 (5.62%) Angular Developer
7 3 (3.37%) J2EE Developer
7 3 (3.37%) Java/J2EE Developer
7 3 (3.37%) Node.js Developer
7 3 (3.37%) Software Developer
8 2 (2.25%) AWS Developer
8 2 (2.25%) e-Learning Developer
8 2 (2.25%) Hadoop Developer
8 2 (2.25%) Java Hadoop Developer
8 2 (2.25%) Java Software Developer
8 2 (2.25%) Oracle Developer
8 2 (2.25%) Technical Leader
Libraries, Frameworks & Software Standards
1 73 (82.02%) Spring
2 55 (61.80%) XML
3 38 (42.70%) REST
4 27 (30.34%) Hibernate
5 24 (26.97%) HTML
6 23 (25.84%) AngularJS
6 23 (25.84%) RabbitMQ
7 21 (23.60%) JMS
8 20 (22.47%) Apache Camel
9 19 (21.35%) Web Services
10 18 (20.22%) Spring MVC
11 17 (19.10%) CSS
12 16 (17.98%) RESTful
13 15 (16.85%) Java EE
13 15 (16.85%) jQuery
13 15 (16.85%) XSLT
14 14 (15.73%) Play Framework
15 13 (14.61%) CSS3
15 13 (14.61%) HTML5
15 13 (14.61%) J2EE
Miscellaneous
1 5 (5.62%) Analytical Skills
2 4 (4.49%) Data Structures
3 2 (2.25%) e-Learning
3 2 (2.25%) Learning Management System
3 2 (2.25%) NHS
4 1 (1.12%) Fintech
4 1 (1.12%) iPad
4 1 (1.12%) Online Games
4 1 (1.12%) Reference Data
4 1 (1.12%) User Experience
4 1 (1.12%) Virtual Team
Operating Systems
1 26 (29.21%) Linux
2 7 (7.87%) Mac OS X
2 7 (7.87%) Unix
3 3 (3.37%) Android
4 2 (2.25%) Oracle Linux
5 1 (1.12%) Debian
5 1 (1.12%) Ubuntu
Processes & Methodologies
1 37 (41.57%) Agile Software Development
2 25 (28.09%) Continuous Delivery
2 25 (28.09%) Open Source
3 23 (25.84%) TDD
4 21 (23.60%) Continuous Integration
4 21 (23.60%) MVC
5 19 (21.35%) Microservices
6 17 (19.10%) Customer Requirements
6 17 (19.10%) Migration
7 16 (17.98%) SOA
8 14 (15.73%) Unit Testing
9 13 (14.61%) Configuration Management
9 13 (14.61%) Scrum
10 8 (8.99%) BDD
10 8 (8.99%) Low Latency
10 8 (8.99%) Responsive Web Design
10 8 (8.99%) Software Engineering
11 7 (7.87%) Process Improvement
12 6 (6.74%) Continuous Improvement
12 6 (6.74%) Product Management
Programming Languages
1 88 (98.88%) Java
2 69 (77.53%) Groovy
3 56 (62.92%) JavaScript
4 36 (40.45%) SQL
5 11 (12.36%) XPath
6 6 (6.74%) Scala
7 4 (4.49%) Python
8 3 (3.37%) Clojure
8 3 (3.37%) Jython
9 1 (1.12%) C++
9 1 (1.12%) ES6
9 1 (1.12%) Perl
Qualifications
1 10 (11.24%) Security Cleared
2 6 (6.74%) BPSS Clearance
3 5 (5.62%) SC Cleared
Quality Assurance & Compliance
1 5 (5.62%) Disclosure Scotland
2 3 (3.37%) QA
System Software
1 27 (30.34%) Docker
Systems Management
1 11 (12.36%) Puppet
2 9 (10.11%) Ansible
3 8 (8.99%) Opscode Chef
4 5 (5.62%) Kubernetes
Vendors
1 20 (22.47%) Oracle
2 9 (10.11%) IBM
3 5 (5.62%) ATG