Period
to 19 November 2017

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 6 months to 19 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.

X.509
Central London > City of London
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 238 250 270
Rank change year-on-year +12 +20 +33
Contract jobs citing X.509 2 3 1
As % of all contract IT jobs advertised in the City of London 0.028% 0.045% 0.011%
As % of the Communications & Networking category 0.27% 0.31% 0.089%
Number of daily rates quoted 2 2 0
City of London median daily rate £519 £350 -
Median daily rate % change year-on-year +48.21% - -
Central London median daily rate £519 £375 -
% change year-on-year +38.33% - -
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

X.509 is in the Communications and Computer Networking 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 communications or computer networking skills.

All Communications and Computer Networking Skills
City of London
Contract vacancies with a requirement for communications or computer networking skills 743 960 1128
As % of all contract IT jobs advertised in the City of London 10.58% 14.43% 12.28%
Number of daily rates quoted 580 734 847
City of London median daily rate £450 £450 £425
Median daily rate % change year-on-year - +5.88% +5.52%
10th Percentile £213 £287 £263
90th Percentile £638 £588 £575
Central London median daily rate £450 £450 £425
% change year-on-year - +5.88% +6.25%
Number of hourly rates quoted 13 14 29
City of London median hourly rate £17.00 £19.00 £17.50
Median hourly rate % change year-on-year -10.53% +8.57% -10.26%
10th Percentile £11.86 £11.50 £13.81
90th Percentile £23.28 £48.63 £31.65
Central London median hourly rate £16.96 £19.00 £17.50
% change year-on-year -10.75% +8.57% -10.26%

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

For the 6 months to 19 November 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 2 (100.00%) SQL Server
1 2 (100.00%) Web Services
1 2 (100.00%) XML
1 2 (100.00%) LDAP
1 2 (100.00%) ETL
1 2 (100.00%) HTTP
1 2 (100.00%) DNS
1 2 (100.00%) XML Schema
1 2 (100.00%) C#
1 2 (100.00%) SQL
1 2 (100.00%) SQL Server Integration Services
1 2 (100.00%) JSON
1 2 (100.00%) LINQ
1 2 (100.00%) Data Integration
1 2 (100.00%) OAuth
1 2 (100.00%) Microsoft Azure
1 2 (100.00%) Amazon AWS
1 2 (100.00%) Bigtable
1 2 (100.00%) OAuth2
1 2 (100.00%) Google Cloud Platform
1 2 (100.00%) JSON Schema
1 2 (100.00%) API Design
1 2 (100.00%) Swagger
2 1 (50.00%) Strategic Thinking
2 1 (50.00%) Azure Active Directory
2 1 (50.00%) API Development
2 1 (50.00%) .NET
2 1 (50.00%) Active Directory

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:

Cloud Services
1 2 (100.00%) Amazon AWS
1 2 (100.00%) Google Cloud Platform
1 2 (100.00%) Microsoft Azure
2 1 (50.00%) Azure Active Directory
Communications & Networking
1 2 (100.00%) DNS
1 2 (100.00%) HTTP
1 2 (100.00%) LDAP
Database & Business Intelligence
1 2 (100.00%) Bigtable
1 2 (100.00%) SQL Server
1 2 (100.00%) SQL Server Integration Services
Job Titles
1 2 (100.00%) Developer
2 1 (50.00%) .NET Developer
2 1 (50.00%) AWS Developer
2 1 (50.00%) Azure Developer
2 1 (50.00%) C# .NET Developer
2 1 (50.00%) C# Developer
2 1 (50.00%) Data Integration Developer
2 1 (50.00%) Integration Developer
Libraries, Frameworks & Software Standards
1 2 (100.00%) JSON
1 2 (100.00%) JSON Schema
1 2 (100.00%) LINQ
1 2 (100.00%) OAuth
1 2 (100.00%) OAuth2
1 2 (100.00%) Swagger
1 2 (100.00%) Web Services
1 2 (100.00%) XML
1 2 (100.00%) XML Schema
2 1 (50.00%) .NET
Processes & Methodologies
1 2 (100.00%) API Design
1 2 (100.00%) Data Integration
1 2 (100.00%) ETL
2 1 (50.00%) API Development
2 1 (50.00%) Strategic Thinking
Programming Languages
1 2 (100.00%) C#
1 2 (100.00%) SQL
System Software
1 1 (50.00%) Active Directory