The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Ontologies skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Ontologies over the 3 months to 28 June 2017 with a comparison to the same period in the previous 2 years.

Ontology
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 225 246 313
Rank change year-on-year +21 +67  
Permanent jobs citing Ontologies 2 9 2
As % of all permanent IT jobs advertised in the City of London 0.039% 0.14% 0.020%
As % of the Processes & Methodologies category 0.044% 0.16% 0.022%
Number of salaries quoted 2 9 0
Median salary £56,250 £47,500 -
Median salary % change year-on-year +18.42% -  
UK excluding London median salary £63,750 £40,000 £27,500
% change year-on-year +59.37% +45.45%  

Ontologies is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for process and methodology skills.

Process & Methodology Skills
City of London
Permanent job vacancies with a requirement for process and methodology skills 4579 5771 9076
As % of all permanent IT job vacancies advertised in the City of London 89.10% 90.58% 89.21%
Number of salaries quoted 4043 5263 7769
Median salary £62,500 £60,000 £57,500
Median salary % change year-on-year +4.16% +4.34%  
90% offered a salary of more than £40,000 £40,000 £39,500
10% offered a salary of more than £85,000 £82,500 £85,000
UK excluding London median salary £45,000 £45,000 £44,000
% change year-on-year - +2.27%  

Ontologies
Job Vacancy Trend in the City of London

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

Job vacancy trend for Ontologies in the City of London

Ontologies
Salary Trend in the City of London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Ontologies in the City of London.

Salary trend for Ontologies in the City of London

For the 6 months to 28 June 2017, IT jobs citing Ontologies also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for Ontologies.

1 14 (87.50%) Publishing
2 12 (75.00%) Java
3 10 (62.50%) Agile Software Development
3 10 (62.50%) Spring
3 10 (62.50%) Artificial Intelligence
3 10 (62.50%) Degree
3 10 (62.50%) Computer Science
3 10 (62.50%) Multithreading
3 10 (62.50%) Visualisation
3 10 (62.50%) NoSQL
3 10 (62.50%) Natural Language Processing
3 10 (62.50%) Machine Learning
3 10 (62.50%) Big Data
3 10 (62.50%) Algorithms
3 10 (62.50%) Greenfield Project
3 10 (62.50%) Graph Visualisation
3 10 (62.50%) Semantic Search
4 6 (37.50%) HTML
4 6 (37.50%) CSS
5 5 (31.25%) XML
5 5 (31.25%) XSLT
5 5 (31.25%) JavaScript
5 5 (31.25%) RDF
5 5 (31.25%) Semantic Web
6 4 (25.00%) MarkLogic
6 4 (25.00%) Content Development
6 4 (25.00%) .NET
6 4 (25.00%) C#
6 4 (25.00%) C++
6 4 (25.00%) XHTML

Ontologies
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:

Applications
1 1 (6.25%) XMetaL
Communications & Networking
1 1 (6.25%) HTTP
Database & Business Intelligence
1 10 (62.50%) Big Data
1 10 (62.50%) NoSQL
2 4 (25.00%) MarkLogic
3 1 (6.25%) Triplestore
Development Applications
1 1 (6.25%) Eclipse
General
1 14 (87.50%) Publishing
2 1 (6.25%) Finance
Job Titles
1 16 (100.00%) Developer
2 11 (68.75%) Java Developer
3 6 (37.50%) Senior Developer
3 6 (37.50%) Senior Java Developer
4 4 (25.00%) XML Developer
5 3 (18.75%) Artificial Intelligence Developer
5 3 (18.75%) Machine Learning Developer
6 1 (6.25%) Semantic Web Developer
6 1 (6.25%) Web Developer
6 1 (6.25%) Workflow Developer
Libraries, Frameworks & Software Standards
1 10 (62.50%) Natural Language Processing
1 10 (62.50%) Spring
2 6 (37.50%) CSS
2 6 (37.50%) HTML
3 5 (31.25%) XML
3 5 (31.25%) XSLT
4 4 (25.00%) .NET
4 4 (25.00%) XHTML
4 4 (25.00%) XSL
5 1 (6.25%) Apache Jena
5 1 (6.25%) JSON
5 1 (6.25%) REST
5 1 (6.25%) RESTful
5 1 (6.25%) XML Schema
Miscellaneous
1 10 (62.50%) Algorithms
1 10 (62.50%) Computer Science
1 10 (62.50%) Greenfield Project
2 5 (31.25%) Semantic Web
3 2 (12.50%) Kindle
Processes & Methodologies
1 10 (62.50%) Agile Software Development
1 10 (62.50%) Artificial Intelligence
1 10 (62.50%) Graph Visualisation
1 10 (62.50%) Machine Learning
1 10 (62.50%) Multithreading
1 10 (62.50%) Semantic Search
1 10 (62.50%) Visualisation
2 5 (31.25%) RDF
3 4 (25.00%) Content Development
4 3 (18.75%) SDLC
4 3 (18.75%) Unit Testing
5 2 (12.50%) Web Development
6 1 (6.25%) BPMN
6 1 (6.25%) Data Governance
6 1 (6.25%) Data Management
6 1 (6.25%) Workflow
6 1 (6.25%) Workflow Development
Programming Languages
1 12 (75.00%) Java
2 5 (31.25%) JavaScript
3 4 (25.00%) C#
3 4 (25.00%) C++
4 1 (6.25%) Groovy
4 1 (6.25%) SPARQL
4 1 (6.25%) SQL
4 1 (6.25%) VBA
Qualifications
1 10 (62.50%) Degree
Quality Assurance & Compliance
1 2 (12.50%) ISO 9001