The following table provides summary statistics for contract job vacancies advertised in England with a requirement for Ontologies skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Ontologies over the 3 months to 28 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.

Ontology
UK / England
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 575 605 599
Rank change year-on-year +30 -6  
Contract jobs citing Ontologies 8 9 6
As % of all contract IT jobs advertised in England 0.019% 0.018% 0.012%
As % of the Processes & Methodologies category 0.023% 0.022% 0.015%
Number of daily rates quoted 8 7 6
Median daily rate £578 £448 £440
Median daily rate % change year-on-year +29.05% +1.70%  
90% offered a daily rate of more than £414 £426 £315
10% offered a daily rate of more than £733 £760 £688
UK excluding London median daily rate £465 £524 £330
% change year-on-year -11.21% +58.71%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Ontologies 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 England with a requirement for process and methodology skills.

Contract Process & Methodology Skills
England
Contract job vacancies with a requirement for process and methodology skills 34656 40979 39244
As % of all contract IT job vacancies advertised in England 83.30% 82.95% 79.99%
Number of daily rates quoted 23008 27240 24713
Median daily rate £450 £438 £425
Median daily rate % change year-on-year +2.85% +2.94%  
90% offered a daily rate of more than £300 £300 £280
10% offered a daily rate of more than £600 £600 £585
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 862 1004 1153
Median hourly rate £36.00 £36.50 £27.50
Median hourly rate % change year-on-year -1.36% +32.72%  
90% offered a hourly rate of more than £13.00 £13.00 £12.00
10% offered a hourly rate of more than £52.50 £52.50 £48.82
UK excluding London median hourly rate £36.00 £38.50 £30.20
% change year-on-year -6.49% +27.48%  

Ontologies
Job Vacancy Trend in England

The job posting trend of jobs advertised in England citing Ontologies as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for Ontologies in England

Ontologies
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for Ontologies in England

Ontologies
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing Ontologies in England over the 3 months to 28 March 2017.

Contractor daily rate histogram for Ontologies in England

Ontologies
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Ontologies within the England region over the 3 months to 28 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
London +26 5 £725 +20.83% 2
South East +15 3 £455 -
Ontologies
UK

For the 6 months to 28 March 2017, IT contractor jobs citing Ontologies 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 England region with a requirement for Ontologies.

1 8 (42.11%) Data Modelling
2 6 (31.58%) Project Management
2 6 (31.58%) Data Management
2 6 (31.58%) Taxonomies
3 5 (26.32%) Chemistry
3 5 (26.32%) Biology
3 5 (26.32%) Life Science
3 5 (26.32%) Agile Software Development
3 5 (26.32%) Banking
3 5 (26.32%) Data Warehouse
3 5 (26.32%) Hadoop
3 5 (26.32%) Open Source
3 5 (26.32%) Data Governance
3 5 (26.32%) Analytical Skills
3 5 (26.32%) Logical Data Model
3 5 (26.32%) Physical Data Model
4 4 (21.05%) Data Acquisition
4 4 (21.05%) Apache Hive
4 4 (21.05%) MongoDB
4 4 (21.05%) HBase
4 4 (21.05%) PostgreSQL
5 3 (15.79%) Data Architecture
5 3 (15.79%) RESTful
5 3 (15.79%) SPARQL
5 3 (15.79%) Technical Architecture
5 3 (15.79%) Risk Management
5 3 (15.79%) Finance
5 3 (15.79%) RDF
5 3 (15.79%) Python
5 3 (15.79%) Business Transformation

Ontologies
Co-occurring IT Skills in England 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 (10.53%) Apache Spark
2 1 (5.26%) Apache
2 1 (5.26%) CMS
2 1 (5.26%) Elasticsearch
2 1 (5.26%) SAS
Applications
1 1 (5.26%) SPSS
Cloud Services
1 1 (5.26%) Amazon AWS
1 1 (5.26%) Amazon Kinesis
1 1 (5.26%) Google Cloud Platform
Database & Business Intelligence
1 5 (26.32%) Data Warehouse
1 5 (26.32%) Hadoop
2 4 (21.05%) Apache Hive
2 4 (21.05%) HBase
2 4 (21.05%) MongoDB
2 4 (21.05%) PostgreSQL
3 2 (10.53%) Big Data
3 2 (10.53%) NoSQL
3 2 (10.53%) Triplestore
4 1 (5.26%) Mahout
General
1 5 (26.32%) Banking
2 3 (15.79%) Finance
3 2 (10.53%) Investment Banking
4 1 (5.26%) Advertising
4 1 (5.26%) Games
4 1 (5.26%) Legal
4 1 (5.26%) Marketing
Job Titles
1 7 (36.84%) Architect
2 5 (26.32%) Data Architect
2 5 (26.32%) Project Manager
3 4 (21.05%) Principal Architect
4 3 (15.79%) Developer
4 3 (15.79%) Domain Architect
4 3 (15.79%) Principal Data Architect
5 2 (10.53%) Lead Developer
6 1 (5.26%) Analyst
6 1 (5.26%) Data Engineer
6 1 (5.26%) Data Modeller
6 1 (5.26%) Enterprise Data Architect
6 1 (5.26%) Functional Architect
6 1 (5.26%) Lead Software Developer
6 1 (5.26%) Principal Enterprise Architect
6 1 (5.26%) Python Developer
6 1 (5.26%) Report Analyst
6 1 (5.26%) Software Developer
6 1 (5.26%) Web Content Manager
6 1 (5.26%) Web Manager
Libraries, Frameworks & Software Standards
1 3 (15.79%) RESTful
2 2 (10.53%) Web Services
3 1 (5.26%) .NET
3 1 (5.26%) CSS
3 1 (5.26%) HTML
3 1 (5.26%) MLlib
3 1 (5.26%) Natural Language Processing
Miscellaneous
1 6 (31.58%) Taxonomies
2 5 (26.32%) Analytical Skills
2 5 (26.32%) Life Science
3 3 (15.79%) Linked Data
3 3 (15.79%) User Experience
4 2 (10.53%) Digital Media
4 2 (10.53%) Equities
4 2 (10.53%) Foreign Exchange (FX)
5 1 (5.26%) Management Information System
5 1 (5.26%) Online Banking
5 1 (5.26%) Reference Data
Processes & Methodologies
1 8 (42.11%) Data Modelling
2 6 (31.58%) Data Management
2 6 (31.58%) Project Management
3 5 (26.32%) Agile Software Development
3 5 (26.32%) Biology
3 5 (26.32%) Chemistry
3 5 (26.32%) Data Governance
3 5 (26.32%) Logical Data Model
3 5 (26.32%) Open Source
3 5 (26.32%) Physical Data Model
4 4 (21.05%) Data Acquisition
5 3 (15.79%) Business Transformation
5 3 (15.79%) Data Architecture
5 3 (15.79%) RDF
5 3 (15.79%) Risk Management
5 3 (15.79%) Technical Architecture
6 2 (10.53%) Automated Testing
6 2 (10.53%) Content Management
6 2 (10.53%) Software Engineering
6 2 (10.53%) TDD
Programming Languages
1 3 (15.79%) Python
1 3 (15.79%) SPARQL
2 2 (10.53%) C++
2 2 (10.53%) Java
3 1 (5.26%) C
3 1 (5.26%) MATLAB
3 1 (5.26%) R
Qualifications
1 1 (5.26%) BPSS Clearance
Quality Assurance & Compliance
1 2 (10.53%) MiFID
2 1 (5.26%) Basel III
2 1 (5.26%) CRD IV
2 1 (5.26%) IFRS
System Software
1 1 (5.26%) Docker
Systems Management
1 1 (5.26%) Kubernetes
Vendors
1 1 (5.26%) Google
1 1 (5.26%) IBM