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 27 June 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
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 602 642 621
Rank change year-on-year +40 -21  
Contract jobs citing RDF 8 12 21
As % of all contract IT jobs advertised in the UK 0.017% 0.022% 0.038%
As % of the Processes & Methodologies category 0.020% 0.027% 0.047%
Number of daily rates quoted 7 10 15
Median daily rate £600 £513 £525
Median daily rate % change year-on-year +17.07% -2.38%  
90% offered a daily rate of more than £490 £461 £500
10% offered a daily rate of more than £629 £611 £628
UK excluding London median daily rate £615 £656 £625
% change year-on-year -6.28% +5.00%  
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 39792 44999 44543
As % of all contract IT job vacancies advertised in the UK 84.45% 83.35% 80.76%
Number of daily rates quoted 25913 29844 28605
Median daily rate £450 £438 £413
Median daily rate % change year-on-year +2.85% +6.06%  
90% offered a daily rate of more than £313 £300 £285
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £415 £400 £385
% change year-on-year +3.75% +3.89%  
Number of hourly rates quoted 1055 1094 1232
Median hourly rate £32.50 £28.00 £27.50
Median hourly rate % change year-on-year +16.07% +1.81%  
90% offered a hourly rate of more than £13.00 £12.58 £12.35
10% offered a hourly rate of more than £54.00 £48.00 £50.00
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

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 27 June 2017.

Contractor daily rate histogram for RDF in the UK

RDF
Top 4 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 27 June 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 +18 8 £600 +17.07% 4
London 0 7 £600 +26.31% 3
Canary Wharf +3 3 £600 +9.09%
City of London -1 1 £650 +44.44%

For the 6 months to 27 June 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 15 (83.33%) SPARQL
2 9 (50.00%) Java
3 8 (44.44%) Finance
4 7 (38.89%) Linked Data
5 6 (33.33%) REST
5 6 (33.33%) Hadoop
5 6 (33.33%) Semantic Web
5 6 (33.33%) Content Management
6 5 (27.78%) Banking
6 5 (27.78%) Agile Software Development
6 5 (27.78%) Management Information System
6 5 (27.78%) SQL
6 5 (27.78%) XML
6 5 (27.78%) RESTful
6 5 (27.78%) Big Data
6 5 (27.78%) Analytics
7 4 (22.22%) Machine Learning
7 4 (22.22%) Mahout
7 4 (22.22%) Information Retrieval
7 4 (22.22%) Apache Spark
7 4 (22.22%) MLlib
7 4 (22.22%) Big Data Analytics
7 4 (22.22%) Data Analytics
7 4 (22.22%) Business Analytics
7 4 (22.22%) Natural Language Processing
7 4 (22.22%) Open Source
7 4 (22.22%) HTML5
7 4 (22.22%) Artificial Intelligence
7 4 (22.22%) Ontologies
7 4 (22.22%) HTML

RDF
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 4 (22.22%) Apache
1 4 (22.22%) Apache Spark
1 4 (22.22%) SAS
2 3 (16.67%) JBoss
2 3 (16.67%) WebLogic
3 2 (11.11%) Apache Solr
4 1 (5.56%) Oracle SOA Suite
Applications
1 4 (22.22%) SPSS
Cloud Services
1 1 (5.56%) Amazon AWS
Communications & Networking
1 3 (16.67%) HTTP
Database & Business Intelligence
1 6 (33.33%) Hadoop
2 5 (27.78%) Big Data
3 4 (22.22%) Mahout
4 3 (16.67%) NoSQL
5 2 (11.11%) Apache Cassandra
5 2 (11.11%) Data Lake
5 2 (11.11%) Data Warehouse
5 2 (11.11%) OLAP
5 2 (11.11%) OLTP
5 2 (11.11%) Oracle OLAP
5 2 (11.11%) Pentaho
6 1 (5.56%) MarkLogic
6 1 (5.56%) MySQL
6 1 (5.56%) Triplestore
Development Applications
1 2 (11.11%) ERwin
1 2 (11.11%) MagicDraw
2 1 (5.56%) Eclipse
2 1 (5.56%) Git (software)
2 1 (5.56%) JUnit
2 1 (5.56%) Mercurial
2 1 (5.56%) Subversion
General
1 8 (44.44%) Finance
2 5 (27.78%) Banking
3 4 (22.22%) Publishing
4 3 (16.67%) Pharmaceutical
5 2 (11.11%) Wholesale Banking
6 1 (5.56%) Marketing
6 1 (5.56%) Retail
Job Titles
1 9 (50.00%) Architect
2 8 (44.44%) Developer
3 3 (16.67%) Java Developer
3 3 (16.67%) Lead Architect
3 3 (16.67%) Solutions Architect
4 2 (11.11%) C Developer
4 2 (11.11%) C Software Engineer
4 2 (11.11%) C/C++ Developer
4 2 (11.11%) C/C++ Software Engineer
4 2 (11.11%) C++ Developer
4 2 (11.11%) C++ Software Engineer
4 2 (11.11%) Data Architect
4 2 (11.11%) Information Architect
4 2 (11.11%) Software Engineer
4 2 (11.11%) Web Developer
4 2 (11.11%) XML Developer
5 1 (5.56%) C/C++ Software Developer
5 1 (5.56%) Developer/Software Engineer
5 1 (5.56%) Objective-C Developer
5 1 (5.56%) XML XSLT Developer
Libraries, Frameworks & Software Standards
1 6 (33.33%) REST
2 5 (27.78%) RESTful
2 5 (27.78%) XML
3 4 (22.22%) HTML
3 4 (22.22%) HTML5
3 4 (22.22%) JMS
3 4 (22.22%) Middleware
3 4 (22.22%) MLlib
3 4 (22.22%) Natural Language Processing
3 4 (22.22%) UIMA
4 3 (16.67%) Hibernate
4 3 (16.67%) iBATIS
4 3 (16.67%) J2EE
4 3 (16.67%) JSON
4 3 (16.67%) Spring
4 3 (16.67%) Web Services
4 3 (16.67%) WebSockets
5 2 (11.11%) Lucene
5 2 (11.11%) XSLT
6 1 (5.56%) XML Schema
Miscellaneous
1 7 (38.89%) Linked Data
2 6 (33.33%) Semantic Web
3 5 (27.78%) Management Information System
4 3 (16.67%) Greenfield Project
5 2 (11.11%) Data Structures
5 2 (11.11%) Reference Data
5 2 (11.11%) Taxonomies
Operating Systems
1 2 (11.11%) Linux
1 2 (11.11%) Unix
Processes & Methodologies
1 6 (33.33%) Content Management
2 5 (27.78%) Agile Software Development
2 5 (27.78%) Analytics
3 4 (22.22%) Artificial Intelligence
3 4 (22.22%) Big Data Analytics
3 4 (22.22%) Business Analytics
3 4 (22.22%) Cognitive Computing
3 4 (22.22%) CRM
3 4 (22.22%) Data Analytics
3 4 (22.22%) Information Management
3 4 (22.22%) Information Retrieval
3 4 (22.22%) Machine Learning
3 4 (22.22%) Ontologies
3 4 (22.22%) Open Source
3 4 (22.22%) Stakeholder Management
4 3 (16.67%) Front End Development
4 3 (16.67%) Inversion of Control
4 3 (16.67%) Scrum
4 3 (16.67%) Software Engineering
4 3 (16.67%) Use Case
Programming Languages
1 15 (83.33%) SPARQL
2 9 (50.00%) Java
3 5 (27.78%) SQL
4 4 (22.22%) JavaScript
4 4 (22.22%) MATLAB
4 4 (22.22%) R
5 3 (16.67%) C
5 3 (16.67%) C++
6 2 (11.11%) Objective-C
6 2 (11.11%) TypeScript
7 1 (5.56%) COBOL
7 1 (5.56%) Scala
Quality Assurance & Compliance
1 2 (11.11%) Data Quality
Vendors
1 4 (22.22%) IBM
2 3 (16.67%) Oracle
3 2 (11.11%) Informatica