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 23 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
23 Mar 2017
Same period 2016 Same period 2015
Resource Description Framework (RDF)
England / London
Rank 394 400 394
Rank change year-on-year +6 -6  
Contract jobs citing RDF 8 19 15
As % of all contract IT jobs advertised in London 0.042% 0.086% 0.072%
As % of the Processes & Methodologies category 0.049% 0.10% 0.087%
Number of daily rates quoted 8 14 12
Median daily rate £379 £600 £375
Median daily rate % change year-on-year -36.87% +60.00%  
90% offered a daily rate of more than £370 £420 £300
10% offered a daily rate of more than £499 £675 £398
UK excluding London median daily rate £525 - £388
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 16350 18715 17143
As % of all contract IT job vacancies advertised in London 85.12% 85.09% 82.05%
Number of daily rates quoted 11752 13518 12038
Median daily rate £475 £475 £450
Median daily rate % change year-on-year - +5.55%  
90% offered a daily rate of more than £345 £325 £310
10% offered a daily rate of more than £650 £625 £601
UK excluding London median daily rate £410 £400 £399
% change year-on-year +2.50% +0.29%  
Number of hourly rates quoted 161 190 241
Median hourly rate £31.92 £22.50 £20.31
Median hourly rate % change year-on-year +41.86% +10.78%  
90% offered a hourly rate of more than £14.18 £12.00 £11.00
10% offered a hourly rate of more than £55.00 £52.50 £55.00
UK excluding London median hourly rate £36.00 £39.00 £30.00
% change year-on-year -7.69% +30.00%  

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 23 March 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 23 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
City of London - 1 £413 -
RDF
England

RDF
Top 30 Related IT Skills in London

For the 6 months to 23 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 London region with a requirement for RDF.

1 21 (100.00%) SPARQL
2 12 (57.14%) HTML
2 12 (57.14%) Java
3 10 (47.62%) Agile Software Development
4 9 (42.86%) Software Engineering
4 9 (42.86%) Web Services
4 9 (42.86%) RESTful
5 8 (38.10%) Linked Data
5 8 (38.10%) C
5 8 (38.10%) HTTP
6 7 (33.33%) JavaScript
6 7 (33.33%) TDD
6 7 (33.33%) Scrum
6 7 (33.33%) JSON
6 7 (33.33%) Semantic Web
7 6 (28.57%) BDD
7 6 (28.57%) Publishing
7 6 (28.57%) C++
7 6 (28.57%) XML
7 6 (28.57%) Middleware
7 6 (28.57%) Pharmaceutical
8 5 (23.81%) REST
8 5 (23.81%) Digital Media
8 5 (23.81%) HTML5
8 5 (23.81%) Triplestore
8 5 (23.81%) Coaching
8 5 (23.81%) Front End Development
9 4 (19.05%) JSON-LD
9 4 (19.05%) DevOps
9 4 (19.05%) TypeScript

RDF
Top Related 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 (14.29%) Apache Qpid
2 2 (9.52%) CMS
3 1 (4.76%) Apache
3 1 (4.76%) Apache Spark
3 1 (4.76%) Oracle SOA Suite
3 1 (4.76%) SAS
Applications
1 1 (4.76%) SPSS
Cloud Services
1 1 (4.76%) Amazon AWS
Communications & Networking
1 8 (38.10%) HTTP
2 3 (14.29%) SNMP
3 1 (4.76%) HTTPS
Database & Business Intelligence
1 5 (23.81%) Triplestore
2 4 (19.05%) MarkLogic
2 4 (19.05%) NoSQL
3 3 (14.29%) Big Data
4 1 (4.76%) CouchDB
4 1 (4.76%) Hadoop
4 1 (4.76%) Mahout
4 1 (4.76%) MongoDB
4 1 (4.76%) MySQL
Development Applications
1 4 (19.05%) JUnit
1 4 (19.05%) Maven
2 3 (14.29%) GoCD
2 3 (14.29%) Mockito
2 3 (14.29%) Wercker
3 1 (4.76%) Git (software)
3 1 (4.76%) Mercurial
3 1 (4.76%) Subversion
General
1 6 (28.57%) Pharmaceutical
1 6 (28.57%) Publishing
2 1 (4.76%) Banking
2 1 (4.76%) Finance
Job Titles
1 16 (76.19%) Developer
2 7 (33.33%) Java Developer
3 4 (19.05%) Senior Developer
3 4 (19.05%) Web Developer
4 3 (14.29%) AWS Developer
4 3 (14.29%) C Developer
4 3 (14.29%) Front End Developer (Client-Side Developer)
4 3 (14.29%) Front End Web Developer (Client-Side Developer)
4 3 (14.29%) Lead Developer
4 3 (14.29%) Senior Java Developer
5 2 (9.52%) Big Data Developer
5 2 (9.52%) C Software Engineer
5 2 (9.52%) C/C++ Developer
5 2 (9.52%) C/C++ Software Engineer
5 2 (9.52%) C++ Developer
5 2 (9.52%) C++ Software Engineer
5 2 (9.52%) Software Developer
5 2 (9.52%) Software Engineer
6 1 (4.76%) Developer/Software Engineer
6 1 (4.76%) Semantic Web Java Developer
Libraries, Frameworks & Software Standards
1 12 (57.14%) HTML
2 9 (42.86%) RESTful
2 9 (42.86%) Web Services
3 7 (33.33%) JSON
4 6 (28.57%) Middleware
4 6 (28.57%) XML
5 5 (23.81%) HTML5
5 5 (23.81%) REST
6 4 (19.05%) JSON-LD
7 3 (14.29%) CSS
7 3 (14.29%) JAX-RS
7 3 (14.29%) RabbitMQ
7 3 (14.29%) SAML
7 3 (14.29%) Servlets
8 2 (9.52%) ReactiveX
8 2 (9.52%) Redux
8 2 (9.52%) XSD
9 1 (4.76%) .NET
9 1 (4.76%) ActiveMQ
9 1 (4.76%) JMS
Miscellaneous
1 8 (38.10%) Linked Data
2 7 (33.33%) Semantic Web
3 5 (23.81%) Digital Media
4 3 (14.29%) W3C
5 2 (9.52%) Embedded Systems
6 1 (4.76%) Computer Science
6 1 (4.76%) Management Information System
Operating Systems
1 4 (19.05%) Unix
2 3 (14.29%) Linux
Processes & Methodologies
1 10 (47.62%) Agile Software Development
2 9 (42.86%) Software Engineering
3 7 (33.33%) Scrum
3 7 (33.33%) TDD
4 6 (28.57%) BDD
5 5 (23.81%) Coaching
5 5 (23.81%) Front End Development
6 4 (19.05%) Content Management
6 4 (19.05%) DevOps
6 4 (19.05%) Web Development
7 3 (14.29%) API Development
7 3 (14.29%) API Testing
7 3 (14.29%) Benchmarking
7 3 (14.29%) Microservices
7 3 (14.29%) Ontologies
7 3 (14.29%) Performance Analysis
7 3 (14.29%) Performance Tuning
7 3 (14.29%) PLM
7 3 (14.29%) Test Automation
7 3 (14.29%) Web Accessibility
Programming Languages
1 21 (100.00%) SPARQL
2 12 (57.14%) Java
3 8 (38.10%) C
4 7 (33.33%) JavaScript
5 6 (28.57%) C++
6 4 (19.05%) SQL
6 4 (19.05%) TypeScript
7 3 (14.29%) Objective-C
7 3 (14.29%) Python
7 3 (14.29%) XPath
7 3 (14.29%) XQuery
8 1 (4.76%) MATLAB
8 1 (4.76%) R
Qualifications
1 1 (4.76%) Degree
System Software
1 3 (14.29%) Docker
1 3 (14.29%) Shibboleth
Systems Management
1 3 (14.29%) Ansible
1 3 (14.29%) Consul
1 3 (14.29%) Packer
1 3 (14.29%) Terraform
Vendors
1 2 (9.52%) Oracle
2 1 (4.76%) IBM