The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for X.509 skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited X.509 over the 3 months to 28 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.

X.509
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 163 163 -
Rank change year-on-year 0 -  
Contract jobs citing X.509 3 2 0
As % of all contract IT jobs advertised in the City of London 0.092% 0.059% -
As % of the Communications & Networking category 0.88% 0.42% -
Number of daily rates quoted 3 1 0
Median daily rate £500 £325 -
Median daily rate % change year-on-year +53.84% -  
UK excluding London median daily rate £400 £475 £418
% change year-on-year -15.78% +13.77%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

X.509 is in the communications and computer networking 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 communications and computer networking skills.

Contract Communications & Computer Network Skills
City of London
Contract job vacancies with a requirement for communications and computer networking skills 340 471 737
As % of all contract IT job vacancies advertised in the City of London 10.42% 13.99% 12.84%
Number of daily rates quoted 675 1008 1569
Median daily rate £427 £469 £413
Median daily rate % change year-on-year -8.90% +13.63%  
90% offered a daily rate of more than £191 £269 £275
10% offered a daily rate of more than £625 £594 £550
UK excluding London median daily rate £375 £365 £340
% change year-on-year +2.73% +7.35%  
Number of hourly rates quoted 61 23 43
Median hourly rate £24.86 £19.00 £17.98
Median hourly rate % change year-on-year +30.84% +5.67%  
90% offered a hourly rate of more than £21.40 £16.25 £14.55
10% offered a hourly rate of more than £30.00 £25.20 £32.86
UK excluding London median hourly rate £27.50 £31.50 £23.50
% change year-on-year -12.69% +34.04%  

X.509
Job Vacancy Trend in the City of London

Job postings citing X.509 as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for X.509 in the City of London

X.509
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 X.509 in the City of London.

Contractor daily rate trend for X.509 in the City of London

X.509
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing X.509 in the City of London over the 3 months to 28 June 2017.

Contractor daily rate histogram for X.509 in the City of London

For the 6 months to 28 June 2017, IT contractor jobs citing X.509 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 X.509.

1 3 (75.00%) C#
1 3 (75.00%) SQL
1 3 (75.00%) LDAP
1 3 (75.00%) OAuth
2 2 (50.00%) Microsoft Azure
2 2 (50.00%) Amazon AWS
2 2 (50.00%) OAuth2
2 2 (50.00%) Google Cloud Platform
2 2 (50.00%) Bigtable
2 2 (50.00%) API Design
2 2 (50.00%) Swagger
2 2 (50.00%) JSON Schema
2 2 (50.00%) ETL
2 2 (50.00%) HTTP
2 2 (50.00%) DNS
2 2 (50.00%) XML Schema
2 2 (50.00%) .NET
2 2 (50.00%) SQL Server
2 2 (50.00%) Web Services
2 2 (50.00%) XML
2 2 (50.00%) Finance
2 2 (50.00%) SQL Server Integration Services
2 2 (50.00%) JSON
2 2 (50.00%) LINQ
2 2 (50.00%) Data Integration
3 1 (25.00%) Identity Management
3 1 (25.00%) jQuery
3 1 (25.00%) Hibernate
3 1 (25.00%) Banking
3 1 (25.00%) Spring

X.509
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 1 (25.00%) JBoss
Cloud Services
1 2 (50.00%) Amazon AWS
1 2 (50.00%) Google Cloud Platform
1 2 (50.00%) Microsoft Azure
2 1 (25.00%) Azure Active Directory
2 1 (25.00%) PaaS
2 1 (25.00%) SaaS
Communications & Networking
1 3 (75.00%) LDAP
2 2 (50.00%) DNS
2 2 (50.00%) HTTP
Database & Business Intelligence
1 2 (50.00%) Bigtable
1 2 (50.00%) SQL Server
1 2 (50.00%) SQL Server Integration Services
Development Applications
1 1 (25.00%) Cucumber
1 1 (25.00%) JUnit
General
1 2 (50.00%) Finance
2 1 (25.00%) Banking
Job Titles
1 2 (50.00%) Developer
2 1 (25.00%) .NET Developer
2 1 (25.00%) Architect
2 1 (25.00%) AWS Developer
2 1 (25.00%) Azure Developer
2 1 (25.00%) C# .NET Developer
2 1 (25.00%) C# Developer
2 1 (25.00%) Data Integration Developer
2 1 (25.00%) Implementation Manager
2 1 (25.00%) Infrastructure Architect
2 1 (25.00%) Infrastructure Solutions Architect
2 1 (25.00%) Integration Developer
2 1 (25.00%) Solutions Architect
2 1 (25.00%) Technical Implementation Manager
2 1 (25.00%) Technical Manager
Libraries, Frameworks & Software Standards
1 3 (75.00%) OAuth
2 2 (50.00%) .NET
2 2 (50.00%) JSON
2 2 (50.00%) JSON Schema
2 2 (50.00%) LINQ
2 2 (50.00%) OAuth2
2 2 (50.00%) Swagger
2 2 (50.00%) Web Services
2 2 (50.00%) XML
2 2 (50.00%) XML Schema
3 1 (25.00%) Hibernate
3 1 (25.00%) jQuery
3 1 (25.00%) SAML
3 1 (25.00%) Spring
Miscellaneous
1 1 (25.00%) Mobile App
Processes & Methodologies
1 2 (50.00%) API Design
1 2 (50.00%) Data Integration
1 2 (50.00%) ETL
2 1 (25.00%) API Development
2 1 (25.00%) Identity Access Management
2 1 (25.00%) Identity Management
2 1 (25.00%) Mobile Application Development
2 1 (25.00%) Security Monitoring
2 1 (25.00%) Virtual Infrastructure
Programming Languages
1 3 (75.00%) C#
1 3 (75.00%) SQL
2 1 (25.00%) Java
2 1 (25.00%) JavaScript
System Software
1 1 (25.00%) Active Directory
Vendors
1 1 (25.00%) Oracle