Period
to 17 November 2017

The following table provides summary statistics for contract job vacancies advertised in the City of 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 6 months to 17 November 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)
Central London > City of London
6 months to
17 Nov 2017
Same period 2016 Same period 2015
Rank 247 242 277
Rank change year-on-year -5 +35 +21
Contract jobs citing RDF 4 4 4
As % of all contract IT jobs advertised in the City of London 0.056% 0.059% 0.043%
As % of the Processes & Methodologies category 0.064% 0.068% 0.051%
Number of daily rates quoted 4 4 3
City of London median daily rate £625 £394 £525
Median daily rate % change year-on-year +58.73% -25.00% -20.75%
Central London median daily rate £625 £394 £525
% change year-on-year +58.73% -25.00% -19.23%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

RDF is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 6297 5887 7808
As % of all contract IT jobs advertised in the City of London 88.45% 87.51% 83.93%
Number of daily rates quoted 5003 4710 6215
City of London median daily rate £513 £475 £463
Median daily rate % change year-on-year +7.89% +2.70% +2.78%
10th Percentile £325 £313 £285
90th Percentile £688 £663 £650
Central London median daily rate £500 £475 £451
% change year-on-year +5.26% +5.44% +1.24%
Number of hourly rates quoted 59 55 76
City of London median hourly rate £20.00 £20.00 £20.50
Median hourly rate % change year-on-year - -2.44% +7.89%
10th Percentile £13.34 £12.15 £10.99
90th Percentile £30.90 £53.05 £40.00
Central London median hourly rate £20.25 £19.00 £20.00
% change year-on-year +6.58% -5.00% +11.14%

RDF
Job Vacancy Trend in the City of London

Job postings citing RDF as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for RDF in the City of London

RDF
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for RDF in the City of London

For the 6 months to 17 November 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 City of London region with a requirement for RDF.

1 4 (100.00%) Semantic Web
1 4 (100.00%) SPARQL
1 4 (100.00%) Amazon AWS
1 4 (100.00%) QA
1 4 (100.00%) Machine Learning
1 4 (100.00%) Linked Data
2 3 (75.00%) Big Data
3 2 (50.00%) Kafka
3 2 (50.00%) Unit Testing
3 2 (50.00%) Predictive Modelling
3 2 (50.00%) REST
3 2 (50.00%) Natural Language Processing
3 2 (50.00%) Scala
3 2 (50.00%) Visualisation
3 2 (50.00%) Python
3 2 (50.00%) Pair Programming
3 2 (50.00%) Statistical Analysis
3 2 (50.00%) Degree
3 2 (50.00%) JSON
3 2 (50.00%) Computer Science
3 2 (50.00%) Sqoop
3 2 (50.00%) Elasticsearch
3 2 (50.00%) Oozie
3 2 (50.00%) Akka
3 2 (50.00%) Performance Tuning
3 2 (50.00%) Information Retrieval
3 2 (50.00%) Mentoring
3 2 (50.00%) Microservices
3 2 (50.00%) Apache Spark
3 2 (50.00%) Hadoop YARN

RDF
Co-occurring IT Skills in the City of 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 2 (50.00%) Apache Spark
1 2 (50.00%) Elasticsearch
Cloud Services
1 4 (100.00%) Amazon AWS
Database & Business Intelligence
1 3 (75.00%) Big Data
2 2 (50.00%) Sqoop
Job Titles
1 2 (50.00%) Data Scientist
1 2 (50.00%) Developer
2 1 (25.00%) Big Data Developer
2 1 (25.00%) Scala Developer
Libraries, Frameworks & Software Standards
1 2 (50.00%) Akka
1 2 (50.00%) JSON
1 2 (50.00%) Kafka
1 2 (50.00%) Natural Language Processing
1 2 (50.00%) REST
Miscellaneous
1 4 (100.00%) Linked Data
1 4 (100.00%) Semantic Web
2 2 (50.00%) Algorithms
2 2 (50.00%) Computer Science
Processes & Methodologies
1 4 (100.00%) Machine Learning
2 2 (50.00%) Information Retrieval
2 2 (50.00%) Mentoring
2 2 (50.00%) Microservices
2 2 (50.00%) Pair Programming
2 2 (50.00%) Performance Tuning
2 2 (50.00%) Predictive Modelling
2 2 (50.00%) Random Forest
2 2 (50.00%) Sentiment Analysis
2 2 (50.00%) Statistical Analysis
2 2 (50.00%) Statistical Learning
2 2 (50.00%) Unit Testing
2 2 (50.00%) Visualisation
Programming Languages
1 4 (100.00%) SPARQL
2 2 (50.00%) Python
2 2 (50.00%) Scala
Qualifications
1 2 (50.00%) Computer Science Degree
1 2 (50.00%) Degree
Quality Assurance & Compliance
1 4 (100.00%) QA
Systems Management
1 2 (50.00%) Hadoop YARN
1 2 (50.00%) Oozie