The following table provides summary statistics for contract job vacancies advertised in London 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)
England / London
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 417 417 419
Rank change year-on-year 0 +2  
Contract jobs citing RDF 7 10 15
As % of all contract IT jobs advertised in London 0.034% 0.046% 0.065%
As % of the Processes & Methodologies category 0.039% 0.054% 0.079%
Number of daily rates quoted 6 8 11
Median daily rate £600 £475 £513
Median daily rate % change year-on-year +26.31% -7.31%  
90% offered a daily rate of more than £469 £459 £500
10% offered a daily rate of more than £625 £583 £540
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 advertised in London with a requirement for process and methodology skills.

Contract Process & Methodology Skills
London
Contract job vacancies with a requirement for process and methodology skills 18040 18590 18928
As % of all contract IT job vacancies advertised in London 86.66% 85.36% 82.17%
Number of daily rates quoted 12911 13593 13436
Median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.55%  
90% offered a daily rate of more than £350 £325 £310
10% offered a daily rate of more than £625 £638 £625
UK excluding London median daily rate £415 £400 £385
% change year-on-year +3.75% +3.89%  
Number of hourly rates quoted 189 157 253
Median hourly rate £25.00 £21.00 £22.00
Median hourly rate % change year-on-year +19.04% -4.54%  
90% offered a hourly rate of more than £14.75 £12.50 £11.00
10% offered a hourly rate of more than £51.00 £46.00 £55.50
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

RDF
Job Vacancy Trend in London

The job posting trend of jobs advertised in London 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 London

RDF
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for RDF in London

RDF
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing RDF in London over the 3 months to 27 June 2017.

Contractor daily rate histogram for RDF in London

RDF
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing RDF within the London region 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
Canary Wharf +3 3 £600 +9.09%
City of London -1 1 £650 +44.44%
RDF
England

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 across the London region with a requirement for RDF.

1 12 (80.00%) SPARQL
2 8 (53.33%) Java
3 7 (46.67%) Finance
3 7 (46.67%) Linked Data
4 6 (40.00%) REST
4 6 (40.00%) Semantic Web
5 5 (33.33%) Content Management
5 5 (33.33%) RESTful
6 4 (26.67%) HTML5
6 4 (26.67%) Big Data
6 4 (26.67%) HTML
6 4 (26.67%) Middleware
6 4 (26.67%) Publishing
6 4 (26.67%) Stakeholder Management
6 4 (26.67%) JavaScript
6 4 (26.67%) XML
6 4 (26.67%) JMS
7 3 (20.00%) SAS
7 3 (20.00%) HTTP
7 3 (20.00%) IBM
7 3 (20.00%) SPSS
7 3 (20.00%) SQL
7 3 (20.00%) J2EE
7 3 (20.00%) C
7 3 (20.00%) C++
7 3 (20.00%) WebLogic
7 3 (20.00%) Web Services
7 3 (20.00%) Hibernate
7 3 (20.00%) Scrum
7 3 (20.00%) MATLAB

RDF
Co-occurring IT Skills in 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 3 (20.00%) Apache
1 3 (20.00%) Apache Spark
1 3 (20.00%) JBoss
1 3 (20.00%) SAS
1 3 (20.00%) WebLogic
Applications
1 3 (20.00%) SPSS
Cloud Services
1 1 (6.67%) Amazon AWS
Communications & Networking
1 3 (20.00%) HTTP
Database & Business Intelligence
1 4 (26.67%) Big Data
2 3 (20.00%) Hadoop
2 3 (20.00%) Mahout
2 3 (20.00%) NoSQL
3 1 (6.67%) MarkLogic
3 1 (6.67%) MySQL
3 1 (6.67%) Triplestore
Development Applications
1 1 (6.67%) Git (software)
1 1 (6.67%) JUnit
1 1 (6.67%) Mercurial
1 1 (6.67%) Subversion
General
1 7 (46.67%) Finance
2 4 (26.67%) Publishing
3 3 (20.00%) Pharmaceutical
4 2 (13.33%) Banking
5 1 (6.67%) Marketing
5 1 (6.67%) Retail
Job Titles
1 8 (53.33%) Developer
2 6 (40.00%) Architect
3 3 (20.00%) Java Developer
3 3 (20.00%) Solutions Architect
4 2 (13.33%) C Developer
4 2 (13.33%) C Software Engineer
4 2 (13.33%) C/C++ Developer
4 2 (13.33%) C/C++ Software Engineer
4 2 (13.33%) C++ Developer
4 2 (13.33%) C++ Software Engineer
4 2 (13.33%) Lead Architect
4 2 (13.33%) Software Engineer
4 2 (13.33%) Web Developer
4 2 (13.33%) XML Developer
5 1 (6.67%) Big Data Architect
5 1 (6.67%) Big Data Developer
5 1 (6.67%) Front End Developer (Client-Side Developer)
5 1 (6.67%) Front End Web Developer (Client-Side Developer)
5 1 (6.67%) Objective-C Developer
5 1 (6.67%) Semantic Web Developer
Libraries, Frameworks & Software Standards
1 6 (40.00%) REST
2 5 (33.33%) RESTful
3 4 (26.67%) HTML
3 4 (26.67%) HTML5
3 4 (26.67%) JMS
3 4 (26.67%) Middleware
3 4 (26.67%) XML
4 3 (20.00%) Hibernate
4 3 (20.00%) iBATIS
4 3 (20.00%) J2EE
4 3 (20.00%) MLlib
4 3 (20.00%) Natural Language Processing
4 3 (20.00%) Spring
4 3 (20.00%) UIMA
4 3 (20.00%) Web Services
4 3 (20.00%) WebSockets
5 2 (13.33%) JSON
5 2 (13.33%) XSLT
6 1 (6.67%) ActiveMQ
Miscellaneous
1 7 (46.67%) Linked Data
2 6 (40.00%) Semantic Web
3 3 (20.00%) Greenfield Project
3 3 (20.00%) Management Information System
Operating Systems
1 2 (13.33%) Linux
1 2 (13.33%) Unix
Processes & Methodologies
1 5 (33.33%) Content Management
2 4 (26.67%) Stakeholder Management
3 3 (20.00%) Agile Software Development
3 3 (20.00%) Analytics
3 3 (20.00%) Artificial Intelligence
3 3 (20.00%) Big Data Analytics
3 3 (20.00%) Business Analytics
3 3 (20.00%) Cognitive Computing
3 3 (20.00%) CRM
3 3 (20.00%) Data Analytics
3 3 (20.00%) Front End Development
3 3 (20.00%) Information Management
3 3 (20.00%) Information Retrieval
3 3 (20.00%) Inversion of Control
3 3 (20.00%) Machine Learning
3 3 (20.00%) Ontologies
3 3 (20.00%) Open Source
3 3 (20.00%) Scrum
3 3 (20.00%) Software Engineering
4 2 (13.33%) Performance Tuning
Programming Languages
1 12 (80.00%) SPARQL
2 8 (53.33%) Java
3 4 (26.67%) JavaScript
4 3 (20.00%) C
4 3 (20.00%) C++
4 3 (20.00%) MATLAB
4 3 (20.00%) R
4 3 (20.00%) SQL
5 2 (13.33%) Objective-C
5 2 (13.33%) TypeScript
6 1 (6.67%) Scala
Vendors
1 3 (20.00%) IBM
2 1 (6.67%) Oracle