The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for ERD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ERD over the 3 months to 23 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.

Entity-Relationship Diagram (ER Diagram)
London / City of London
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 164 162 -
Rank change year-on-year -2 -  
Contract jobs citing ERD 2 2 0
As % of all contract IT jobs advertised in the City of London 0.061% 0.059% -
As % of the Processes & Methodologies category 0.069% 0.069% -
Number of daily rates quoted 1 2 0
Median daily rate £413 £675 -
Median daily rate % change year-on-year -38.88% -  
UK excluding London median daily rate £550 £450 £425
% change year-on-year +22.22% +5.88%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

ERD 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 the City of London with a requirement for process and methodology skills.

Contract Process & Methodology Skills
City of London
Contract job vacancies with a requirement for process and methodology skills 2907 2906 4704
As % of all contract IT job vacancies advertised in the City of London 88.09% 85.87% 80.95%
Number of daily rates quoted 2235 2375 3702
Median daily rate £500 £475 £473
Median daily rate % change year-on-year +5.26% +0.52%  
90% offered a daily rate of more than £350 £335 £325
10% offered a daily rate of more than £650 £625 £625
UK excluding London median daily rate £415 £400 £383
% change year-on-year +3.75% +4.57%  
Number of hourly rates quoted 25 25 56
Median hourly rate £20.00 £19.00 £24.50
Median hourly rate % change year-on-year +5.26% -22.44%  
90% offered a hourly rate of more than £14.75 £12.50 £15.00
10% offered a hourly rate of more than £41.00 £31.50 £55.50
UK excluding London median hourly rate £33.50 £28.50 £30.00
% change year-on-year +17.54% -5.00%  

ERD
Job Vacancy Trend in the City of London

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

Job vacancy trend for ERD in the City of London

ERD
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 ERD in the City of London.

Contractor daily rate trend for ERD in the City of London

For the 6 months to 23 June 2017, IT contractor jobs citing ERD 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 ERD.

1 5 (83.33%) Data Modelling
1 5 (83.33%) Finance
2 4 (66.67%) Banking
2 4 (66.67%) jQuery
2 4 (66.67%) CRM
2 4 (66.67%) SQL Server
2 4 (66.67%) SQL
2 4 (66.67%) CSS
2 4 (66.67%) UML
3 3 (50.00%) XML
3 3 (50.00%) XSLT
3 3 (50.00%) Java
3 3 (50.00%) Oracle
3 3 (50.00%) EAI
3 3 (50.00%) SOA
3 3 (50.00%) XML Schema
3 3 (50.00%) Informatica
3 3 (50.00%) Salesforce.com
3 3 (50.00%) MOM
3 3 (50.00%) Middleware
3 3 (50.00%) Data Mapping
3 3 (50.00%) JSON
3 3 (50.00%) Visualforce
3 3 (50.00%) Apex Code
3 3 (50.00%) Open Source
3 3 (50.00%) REST
3 3 (50.00%) NoSQL
3 3 (50.00%) AngularJS
3 3 (50.00%) Enterprise Software
3 3 (50.00%) DevOps

ERD
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 (33.33%) Confluence
1 2 (33.33%) Mule
1 2 (33.33%) Oracle SOA Suite
2 1 (16.67%) IIS
Applications
1 1 (16.67%) Microsoft Excel
1 1 (16.67%) MS Visio
Business Applications
1 1 (16.67%) Dynamics CRM
1 1 (16.67%) SAP CRM
Cloud Services
1 3 (50.00%) Salesforce Service Cloud
2 2 (33.33%) GitHub
3 1 (16.67%) Microsoft Azure
Database & Business Intelligence
1 4 (66.67%) SQL Server
2 3 (50.00%) NoSQL
3 2 (33.33%) Big Data
3 2 (33.33%) QlikView
3 2 (33.33%) Relational Database
4 1 (16.67%) MarkLogic
4 1 (16.67%) RDBMS
4 1 (16.67%) SQL Server 2005
4 1 (16.67%) SQL Server 2008
4 1 (16.67%) SQL Server 2012
4 1 (16.67%) SQL Server 2014
4 1 (16.67%) SQL Server Integration Services
Development Applications
1 2 (33.33%) Bitbucket
1 2 (33.33%) Eclipse
1 2 (33.33%) Git (software)
1 2 (33.33%) Jenkins
1 2 (33.33%) JIRA
1 2 (33.33%) Oracle APEX
1 2 (33.33%) TeamCity
2 1 (16.67%) gulp
2 1 (16.67%) jspm
2 1 (16.67%) Moq
2 1 (16.67%) MSTest
2 1 (16.67%) NUnit
2 1 (16.67%) SQL Server Management Studio (SSMS)
2 1 (16.67%) Team Foundation Server
General
1 5 (83.33%) Finance
2 4 (66.67%) Banking
3 1 (16.67%) Investment Banking
Job Titles
1 4 (66.67%) Developer
2 3 (50.00%) Architect
2 3 (50.00%) Java Architect
2 3 (50.00%) Java Developer
2 3 (50.00%) Lead Architect
2 3 (50.00%) Lead Developer
2 3 (50.00%) Lead Java Developer
2 3 (50.00%) Salesforce Architect
2 3 (50.00%) Salesforce Developer
3 1 (16.67%) .NET Developer
3 1 (16.67%) Analyst
3 1 (16.67%) Angular Developer
3 1 (16.67%) ASP.NET MVC Developer
3 1 (16.67%) C# .NET Developer
3 1 (16.67%) C# Developer
3 1 (16.67%) Data Analyst
3 1 (16.67%) Data Modeller
3 1 (16.67%) Full Stack Developer
3 1 (16.67%) SQL Developer
3 1 (16.67%) Technical Analyst
Libraries, Frameworks & Software Standards
1 4 (66.67%) CSS
1 4 (66.67%) jQuery
2 3 (50.00%) AngularJS
2 3 (50.00%) JSON
2 3 (50.00%) Middleware
2 3 (50.00%) REST
2 3 (50.00%) Visualforce
2 3 (50.00%) XML
2 3 (50.00%) XML Schema
2 3 (50.00%) XSLT
3 2 (33.33%) Apache Camel
3 2 (33.33%) GWT
3 2 (33.33%) SOAP
3 2 (33.33%) Struts
4 1 (16.67%) .NET
4 1 (16.67%) .NET Framework
4 1 (16.67%) Ajax
4 1 (16.67%) ASP.NET
4 1 (16.67%) HTML
4 1 (16.67%) NHibernate
Miscellaneous
1 3 (50.00%) Enterprise Software
2 1 (16.67%) Fintech
2 1 (16.67%) Greenfield Project
Operating Systems
1 1 (16.67%) Windows
Processes & Methodologies
1 5 (83.33%) Data Modelling
2 4 (66.67%) CRM
2 4 (66.67%) UML
3 3 (50.00%) API Development
3 3 (50.00%) Data Mapping
3 3 (50.00%) DevOps
3 3 (50.00%) EAI
3 3 (50.00%) Open Source
3 3 (50.00%) Service Design
3 3 (50.00%) SOA
3 3 (50.00%) XML Parsing
4 2 (33.33%) Analytics
5 1 (16.67%) BDD
5 1 (16.67%) Data Management
5 1 (16.67%) Data Migration
5 1 (16.67%) ERP
5 1 (16.67%) ETL
5 1 (16.67%) MVC
5 1 (16.67%) Parallel Programming
5 1 (16.67%) SOLID
Programming Languages
1 4 (66.67%) SQL
2 3 (50.00%) Apex Code
2 3 (50.00%) Java
2 3 (50.00%) SOQL
2 3 (50.00%) SOSL
3 2 (33.33%) T-SQL
4 1 (16.67%) C#
4 1 (16.67%) JavaScript
4 1 (16.67%) TypeScript
Systems Management
1 3 (50.00%) MOM
Vendors
1 3 (50.00%) Informatica
1 3 (50.00%) Oracle
1 3 (50.00%) Salesforce.com
2 2 (33.33%) Microsoft
2 2 (33.33%) Tableau
2 2 (33.33%) TIBCO
3 1 (16.67%) IBM
3 1 (16.67%) SAP