The following table provides summary statistics for contract job vacancies 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 26 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.

3 months to
26 Mar 2017
Same period 2016 Same period 2015
Resource Description Framework (RDF)
UK
Rank 599 622 606
Rank change year-on-year +23 -16  
Contract jobs citing RDF 10 19 17
As % of all contract IT jobs advertised in the UK 0.022% 0.036% 0.032%
As % of the Processes & Methodologies category 0.027% 0.043% 0.040%
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 with a requirement for process and methodology skills.

Contract Process & Methodology Skills
UK
Contract job vacancies with a requirement for process and methodology skills 37182 44106 42440
As % of all contract IT job vacancies advertised in the UK 83.13% 82.88% 79.75%
Number of daily rates quoted 24552 28910 26291
Median daily rate £450 £425 £420
Median daily rate % change year-on-year +5.88% +1.19%  
90% offered a daily rate of more than £300 £300 £275
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £410 £400 £398
% change year-on-year +2.50% +0.62%  
Number of hourly rates quoted 945 1111 1221
Median hourly rate £36.00 £37.50 £28.25
Median hourly rate % change year-on-year -4.00% +32.74%  
90% offered a hourly rate of more than £13.00 £13.00 £12.10
10% offered a hourly rate of more than £53.00 £55.00 £49.50
UK excluding London median hourly rate £36.00 £38.75 £30.00
% change year-on-year -7.09% +29.16%  

RDF
Job Vacancy Trend

The job posting trend of jobs advertised 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 the UK

RDF
Contractor Daily Rate Trend

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

Contractor daily rate trend for RDF in the UK

RDF
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing RDF over the 3 months to 26 March 2017.

Contractor daily rate histogram for RDF in the UK

RDF
Top 6 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing RDF within the UK over the 3 months to 26 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 +30 10 £388 -35.41% 1
London +20 8 £379 -36.87% 1
Dorset - 2 £525 -
South West - 2 £525 -
City of London - 1 £413 -
Bournemouth - 1 £525 -

RDF
Top 30 Related IT Skills

For the 6 months to 26 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 with a requirement for RDF.

1 27 (75.00%) SPARQL
2 20 (55.56%) Agile Software Development
3 17 (47.22%) HTML
4 16 (44.44%) XML
5 15 (41.67%) Java
6 13 (36.11%) JavaScript
6 13 (36.11%) Linked Data
7 10 (27.78%) Web Services
7 10 (27.78%) XPath
8 9 (25.00%) JSON
8 9 (25.00%) Software Engineering
8 9 (25.00%) RESTful
8 9 (25.00%) Secure Coding
9 8 (22.22%) MVC
9 8 (22.22%) C
9 8 (22.22%) SQL
9 8 (22.22%) CSS
9 8 (22.22%) HTTP
10 7 (19.44%) MySQL
10 7 (19.44%) XML Schema
10 7 (19.44%) TDD
10 7 (19.44%) Scrum
10 7 (19.44%) Release Management
10 7 (19.44%) Semantic Web
10 7 (19.44%) Git (software)
10 7 (19.44%) HTML5
11 6 (16.67%) BDD
11 6 (16.67%) SilverStripe
11 6 (16.67%) REST
11 6 (16.67%) Triplestore

RDF
Top Related 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 6 (16.67%) Drupal
1 6 (16.67%) SilverStripe
2 5 (13.89%) CMS
3 3 (8.33%) Apache Qpid
3 3 (8.33%) Umbraco
4 2 (5.56%) Apache Solr
4 2 (5.56%) Apache Spark
4 2 (5.56%) Oracle SOA Suite
5 1 (2.78%) Apache
5 1 (2.78%) ArcGIS
5 1 (2.78%) GeoServer
5 1 (2.78%) GlassFish
5 1 (2.78%) Perch
5 1 (2.78%) SAS
5 1 (2.78%) Tomcat
Applications
1 1 (2.78%) SPSS
Cloud Services
1 1 (2.78%) Amazon AWS
Communications & Networking
1 8 (22.22%) HTTP
2 3 (8.33%) SNMP
3 1 (2.78%) HTTPS
Database & Business Intelligence
1 7 (19.44%) MySQL
2 6 (16.67%) PostgreSQL
2 6 (16.67%) Triplestore
3 5 (13.89%) NoSQL
4 4 (11.11%) Big Data
4 4 (11.11%) Hadoop
4 4 (11.11%) MarkLogic
5 2 (5.56%) Apache Cassandra
5 2 (5.56%) Data Lake
5 2 (5.56%) Data Warehouse
5 2 (5.56%) OLAP
5 2 (5.56%) OLTP
5 2 (5.56%) Oracle OLAP
5 2 (5.56%) Pentaho
6 1 (2.78%) Apache Hive
6 1 (2.78%) CouchDB
6 1 (2.78%) Geospatial Data
6 1 (2.78%) MongoDB
6 1 (2.78%) RDBMS
6 1 (2.78%) Relational Database
Development Applications
1 7 (19.44%) Git (software)
2 4 (11.11%) JUnit
2 4 (11.11%) Maven
3 3 (8.33%) GoCD
3 3 (8.33%) Mockito
3 3 (8.33%) Wercker
4 2 (5.56%) ERwin
4 2 (5.56%) MagicDraw
4 2 (5.56%) Visual Studio
5 1 (2.78%) Eclipse
5 1 (2.78%) Mercurial
5 1 (2.78%) Subversion
General
1 6 (16.67%) Pharmaceutical
1 6 (16.67%) Publishing
2 3 (8.33%) Banking
3 2 (5.56%) Advertising
3 2 (5.56%) Finance
3 2 (5.56%) Wholesale Banking
Job Titles
1 24 (66.67%) Developer
2 8 (22.22%) Java Developer
3 6 (16.67%) Software Developer
4 5 (13.89%) Web Developer
5 4 (11.11%) Analyst
5 4 (11.11%) Data Analyst
5 4 (11.11%) PHP Developer
5 4 (11.11%) Senior Developer
6 3 (8.33%) Architect
6 3 (8.33%) AWS Developer
6 3 (8.33%) C Developer
6 3 (8.33%) Front End Developer (Client-Side Developer)
6 3 (8.33%) Front End Web Developer (Client-Side Developer)
6 3 (8.33%) Lead Developer
6 3 (8.33%) Senior Java Developer
7 2 (5.56%) Big Data Developer
7 2 (5.56%) C/C++ Developer
7 2 (5.56%) C/C++ Software Engineer
7 2 (5.56%) Data Architect
7 2 (5.56%) Software Engineer
Libraries, Frameworks & Software Standards
1 17 (47.22%) HTML
2 16 (44.44%) XML
3 10 (27.78%) Web Services
4 9 (25.00%) JSON
4 9 (25.00%) RESTful
5 8 (22.22%) CSS
6 7 (19.44%) HTML5
6 7 (19.44%) XML Schema
7 6 (16.67%) Middleware
7 6 (16.67%) REST
7 6 (16.67%) XSLT
8 5 (13.89%) .NET
8 5 (13.89%) jQuery
8 5 (13.89%) Laravel
8 5 (13.89%) Symfony
9 4 (11.11%) JSON-LD
10 3 (8.33%) .NET Framework
10 3 (8.33%) JAX-RS
10 3 (8.33%) RabbitMQ
10 3 (8.33%) Twitter Bootstrap
Miscellaneous
1 13 (36.11%) Linked Data
2 7 (19.44%) Semantic Web
3 6 (16.67%) Computer Science
4 5 (13.89%) Digital Media
5 3 (8.33%) W3C
6 2 (5.56%) Data Structures
6 2 (5.56%) Embedded Systems
6 2 (5.56%) Management Information System
6 2 (5.56%) Reference Data
6 2 (5.56%) Taxonomies
6 2 (5.56%) Web 2.0
Operating Systems
1 4 (11.11%) Unix
2 3 (8.33%) Linux
Processes & Methodologies
1 20 (55.56%) Agile Software Development
2 9 (25.00%) Secure Coding
2 9 (25.00%) Software Engineering
3 8 (22.22%) MVC
4 7 (19.44%) Release Management
4 7 (19.44%) Scrum
4 7 (19.44%) TDD
5 6 (16.67%) BDD
5 6 (16.67%) Web Development
6 5 (13.89%) Coaching
6 5 (13.89%) Creative Problem-Solving
6 5 (13.89%) Front End Development
6 5 (13.89%) Visualisation
7 4 (11.11%) Content Management
7 4 (11.11%) DevOps
7 4 (11.11%) Ontologies
8 3 (8.33%) Benchmarking
8 3 (8.33%) Data Management
8 3 (8.33%) Microservices
8 3 (8.33%) PLM
Programming Languages
1 27 (75.00%) SPARQL
2 15 (41.67%) Java
3 13 (36.11%) JavaScript
4 10 (27.78%) XPath
5 8 (22.22%) C
5 8 (22.22%) SQL
6 6 (16.67%) C++
6 6 (16.67%) Perl
6 6 (16.67%) PHP
7 4 (11.11%) TypeScript
7 4 (11.11%) XQuery
8 3 (8.33%) Objective-C
8 3 (8.33%) Python
9 1 (2.78%) C#
9 1 (2.78%) COBOL
9 1 (2.78%) MATLAB
9 1 (2.78%) R
9 1 (2.78%) Scala
Qualifications
1 6 (16.67%) Degree
2 1 (2.78%) DV Cleared
2 1 (2.78%) Security Cleared
Quality Assurance & Compliance
1 2 (5.56%) Data Quality
1 2 (5.56%) Disclosure Scotland
1 2 (5.56%) WCAG
System Software
1 4 (11.11%) Docker
2 3 (8.33%) Shibboleth
Systems Management
1 3 (8.33%) Ansible
1 3 (8.33%) Consul
1 3 (8.33%) Packer
1 3 (8.33%) Terraform
Vendors
1 4 (11.11%) Oracle
2 2 (5.56%) Informatica
3 1 (2.78%) Google
3 1 (2.78%) IBM