The following table provides summary statistics for contract job vacancies advertised in England with a requirement for RDF skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited RDF over the 3 months to 28 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.

Resource Description Framework (RDF)
UK / England
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 573 595 588
Rank change year-on-year +22 -7  
Contract jobs citing RDF 10 19 17
As % of all contract IT jobs advertised in England 0.024% 0.038% 0.035%
As % of the Processes & Methodologies category 0.029% 0.046% 0.043%
Number of daily rates quoted 9 13 14
Median daily rate £388 £600 £375
Median daily rate % change year-on-year -35.41% +60.00%  
90% offered a daily rate of more than £370 £420 £306
10% offered a daily rate of more than £560 £675 £435
UK excluding London median daily rate £525 - £400
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

RDF 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 advertised in England with a requirement for process and methodology skills.

Contract Process & Methodology Skills
England
Contract job vacancies with a requirement for process and methodology skills 34656 40979 39244
As % of all contract IT job vacancies advertised in England 83.30% 82.95% 79.99%
Number of daily rates quoted 23008 27240 24713
Median daily rate £450 £438 £425
Median daily rate % change year-on-year +2.85% +2.94%  
90% offered a daily rate of more than £300 £300 £280
10% offered a daily rate of more than £600 £600 £585
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 862 1004 1153
Median hourly rate £36.00 £36.50 £27.50
Median hourly rate % change year-on-year -1.36% +32.72%  
90% offered a hourly rate of more than £13.00 £13.00 £12.00
10% offered a hourly rate of more than £52.50 £52.50 £48.82
UK excluding London median hourly rate £36.00 £38.50 £30.20
% change year-on-year -6.49% +27.48%  

RDF
Job Vacancy Trend in England

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

Job vacancy trend for RDF in England

RDF
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for RDF in England

RDF
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing RDF in England over the 3 months to 28 March 2017.

Contractor daily rate histogram for RDF in England

RDF
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing RDF within the England region over the 3 months to 28 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
London +14 8 £379 -36.87% 1
South West - 2 £525 -
RDF
UK

RDF
Top 30 Co-occurring IT Skills in England

For the 6 months to 28 March 2017, IT contractor jobs citing RDF 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 England region with a requirement for RDF.

1 22 (78.57%) SPARQL
2 18 (64.29%) Agile Software Development
3 12 (42.86%) Java
3 12 (42.86%) XML
4 11 (39.29%) HTML
5 9 (32.14%) Web Services
5 9 (32.14%) Software Engineering
5 9 (32.14%) Secure Coding
6 8 (28.57%) XPath
6 8 (28.57%) RESTful
6 8 (28.57%) JavaScript
6 8 (28.57%) C
6 8 (28.57%) HTTP
7 7 (25.00%) XML Schema
7 7 (25.00%) SQL
7 7 (25.00%) MySQL
7 7 (25.00%) Scrum
7 7 (25.00%) Git (software)
7 7 (25.00%) Release Management
7 7 (25.00%) Semantic Web
7 7 (25.00%) Linked Data
8 6 (21.43%) BDD
8 6 (21.43%) SilverStripe
8 6 (21.43%) Drupal
8 6 (21.43%) Degree
8 6 (21.43%) JSON
8 6 (21.43%) Computer Science
8 6 (21.43%) TDD
8 6 (21.43%) Publishing
8 6 (21.43%) PostgreSQL

RDF
Co-occurring IT Skills in England 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 6 (21.43%) Drupal
1 6 (21.43%) SilverStripe
2 3 (10.71%) Apache Qpid
3 2 (7.14%) Apache Solr
3 2 (7.14%) Apache Spark
3 2 (7.14%) Oracle SOA Suite
4 1 (3.57%) Apache
4 1 (3.57%) ArcGIS
4 1 (3.57%) CMS
4 1 (3.57%) GeoServer
4 1 (3.57%) Perch
4 1 (3.57%) SAS
Applications
1 1 (3.57%) SPSS
Cloud Services
1 1 (3.57%) Amazon AWS
Communications & Networking
1 8 (28.57%) HTTP
2 3 (10.71%) SNMP
3 1 (3.57%) HTTPS
Database & Business Intelligence
1 7 (25.00%) MySQL
2 6 (21.43%) PostgreSQL
3 4 (14.29%) Big Data
3 4 (14.29%) Hadoop
3 4 (14.29%) NoSQL
3 4 (14.29%) Triplestore
4 2 (7.14%) Apache Cassandra
4 2 (7.14%) Data Lake
4 2 (7.14%) Data Warehouse
4 2 (7.14%) MarkLogic
4 2 (7.14%) OLAP
4 2 (7.14%) OLTP
4 2 (7.14%) Oracle OLAP
4 2 (7.14%) Pentaho
5 1 (3.57%) Apache Hive
5 1 (3.57%) Geospatial Data
5 1 (3.57%) HBase
5 1 (3.57%) Mahout
5 1 (3.57%) MongoDB
5 1 (3.57%) RDBMS
Development Applications
1 7 (25.00%) Git (software)
2 2 (7.14%) ERwin
2 2 (7.14%) JUnit
2 2 (7.14%) MagicDraw
2 2 (7.14%) Maven
3 1 (3.57%) Eclipse
3 1 (3.57%) GoCD
3 1 (3.57%) Mercurial
3 1 (3.57%) Mockito
3 1 (3.57%) Subversion
3 1 (3.57%) Wercker
General
1 6 (21.43%) Pharmaceutical
1 6 (21.43%) Publishing
2 3 (10.71%) Banking
3 2 (7.14%) Advertising
3 2 (7.14%) Finance
3 2 (7.14%) Wholesale Banking
Job Titles
1 21 (75.00%) Developer
2 6 (21.43%) Java Developer
2 6 (21.43%) Software Developer
3 5 (17.86%) Web Developer
4 4 (14.29%) PHP Developer
5 3 (10.71%) Architect
5 3 (10.71%) C Developer
5 3 (10.71%) Front End Developer (Client-Side Developer)
5 3 (10.71%) Front End Web Developer (Client-Side Developer)
5 3 (10.71%) Lead Developer
6 2 (7.14%) Big Data Developer
6 2 (7.14%) C Software Engineer
6 2 (7.14%) C/C++ Developer
6 2 (7.14%) C/C++ Software Engineer
6 2 (7.14%) C++ Developer
6 2 (7.14%) C++ Software Engineer
6 2 (7.14%) Data Architect
6 2 (7.14%) Information Architect
6 2 (7.14%) Senior Developer
6 2 (7.14%) Software Engineer
Libraries, Frameworks & Software Standards
1 12 (42.86%) XML
2 11 (39.29%) HTML
3 9 (32.14%) Web Services
4 8 (28.57%) RESTful
5 7 (25.00%) XML Schema
6 6 (21.43%) JSON
6 6 (21.43%) Middleware
6 6 (21.43%) XSLT
7 5 (17.86%) HTML5
7 5 (17.86%) Laravel
7 5 (17.86%) REST
7 5 (17.86%) Symfony
8 3 (10.71%) JSON-LD
8 3 (10.71%) RabbitMQ
8 3 (10.71%) SAML
9 2 (7.14%) CSS
9 2 (7.14%) Lucene
10 1 (3.57%) ActiveMQ
10 1 (3.57%) jQuery
10 1 (3.57%) Spring
Miscellaneous
1 7 (25.00%) Linked Data
1 7 (25.00%) Semantic Web
2 6 (21.43%) Computer Science
3 5 (17.86%) Digital Media
4 3 (10.71%) W3C
5 2 (7.14%) Data Structures
5 2 (7.14%) Embedded Systems
5 2 (7.14%) Management Information System
5 2 (7.14%) Reference Data
5 2 (7.14%) Taxonomies
Operating Systems
1 4 (14.29%) Unix
2 3 (10.71%) Linux
Processes & Methodologies
1 18 (64.29%) Agile Software Development
2 9 (32.14%) Secure Coding
2 9 (32.14%) Software Engineering
3 7 (25.00%) Release Management
3 7 (25.00%) Scrum
4 6 (21.43%) BDD
4 6 (21.43%) MVC
4 6 (21.43%) TDD
5 5 (17.86%) Coaching
5 5 (17.86%) Creative Problem-Solving
5 5 (17.86%) Front End Development
5 5 (17.86%) Web Development
6 4 (14.29%) DevOps
7 3 (10.71%) Analytics
7 3 (10.71%) Ontologies
7 3 (10.71%) Performance Analysis
7 3 (10.71%) Performance Tuning
7 3 (10.71%) PLM
7 3 (10.71%) Test Automation
7 3 (10.71%) Web Accessibility
Programming Languages
1 22 (78.57%) SPARQL
2 12 (42.86%) Java
3 8 (28.57%) C
3 8 (28.57%) JavaScript
3 8 (28.57%) XPath
4 7 (25.00%) SQL
5 6 (21.43%) C++
5 6 (21.43%) Perl
5 6 (21.43%) PHP
6 4 (14.29%) TypeScript
7 3 (10.71%) Objective-C
7 3 (10.71%) Python
8 2 (7.14%) XQuery
9 1 (3.57%) COBOL
9 1 (3.57%) MATLAB
9 1 (3.57%) R
9 1 (3.57%) Scala
Qualifications
1 6 (21.43%) Degree
Quality Assurance & Compliance
1 2 (7.14%) Data Quality
System Software
1 3 (10.71%) Shibboleth
2 1 (3.57%) Docker
Systems Management
1 1 (3.57%) Ansible
1 1 (3.57%) Consul
1 1 (3.57%) Packer
1 1 (3.57%) Terraform
Vendors
1 4 (14.29%) Oracle
2 2 (7.14%) Informatica
3 1 (3.57%) Google
3 1 (3.57%) IBM