Period
to 20 January 2019

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 20 January 2019 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
20 Jan 2019
Same period 2018 Same period 2017
Rank 242 - 231
Rank change year-on-year - +231 +6
Contract jobs citing X.509 6 0 2
As % of all contract IT jobs advertised in the City of London 0.090% - 0.032%
As % of the Communications & Networking category 0.83% - 0.24%
Number of daily rates quoted 5 0 2
City of London median daily rate £575 - £463
10th Percentile £536 - £379
90th Percentile £621 - £556
Central London median daily rate £575 - £463
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 725 740 846
As % of all contract IT jobs advertised in the City of London 10.83% 10.50% 13.61%
Number of daily rates quoted 552 580 652
City of London median daily rate £425 £450 £450
Median daily rate % change year-on-year -5.56% - +5.88%
10th Percentile £163 £225 £303
90th Percentile £625 £625 £595
Central London median daily rate £425 £450 £450
% change year-on-year -5.56% - +5.88%
Number of hourly rates quoted 30 16 14
City of London median hourly rate £18.85 £16.50 £19.46
Median hourly rate % change year-on-year +14.24% -15.21% -15.39%
10th Percentile £12.75 £11.25 £12.95
90th Percentile £25.70 £22.63 £55.00
Central London median hourly rate £18.76 £15.75 £19.00
% change year-on-year +19.11% -17.11% -5.00%

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 20 January 2019, IT contractor jobs citing X.509 also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the City of London region with a requirement for X.509.

1 6 (100.00%) Java
1 6 (100.00%) JSON
1 6 (100.00%) OAuth
1 6 (100.00%) OAuth2
2 4 (66.67%) REST
3 3 (50.00%) MapReduce
3 3 (50.00%) Bigtable
3 3 (50.00%) User Stories
3 3 (50.00%) Elasticsearch
3 3 (50.00%) C#
3 3 (50.00%) Data Integration
3 3 (50.00%) JIRA
3 3 (50.00%) LINQ
3 3 (50.00%) Integration Testing
3 3 (50.00%) SQL
3 3 (50.00%) SQL Server
3 3 (50.00%) Regression Testing
3 3 (50.00%) Identity Management
3 3 (50.00%) Lucene
3 3 (50.00%) Ruby
3 3 (50.00%) PKI
3 3 (50.00%) SQL Server Integration Services
3 3 (50.00%) XPath
3 3 (50.00%) XML
3 3 (50.00%) XSLT
3 3 (50.00%) Python
3 3 (50.00%) LDAP
3 3 (50.00%) SOA
3 3 (50.00%) ETL
3 3 (50.00%) HTTP

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 3 (50.00%) Confluence
1 3 (50.00%) Elasticsearch
Cloud Services
1 1 (16.67%) Amazon AWS
1 1 (16.67%) Azure Active Directory
1 1 (16.67%) Google Cloud Platform
1 1 (16.67%) Microsoft Azure
Communications & Networking
1 3 (50.00%) DNS
1 3 (50.00%) HTTP
Database & Business Intelligence
1 3 (50.00%) Apache Cassandra
1 3 (50.00%) Bigtable
1 3 (50.00%) Blockchain
1 3 (50.00%) Power BI
1 3 (50.00%) SQL Server
1 3 (50.00%) SQL Server Integration Services
Development Applications
1 3 (50.00%) JIRA
Libraries, Frameworks & Software Standards
1 6 (100.00%) JSON
1 6 (100.00%) OAuth
1 6 (100.00%) OAuth2
2 4 (66.67%) REST
3 3 (50.00%) JSON Schema
3 3 (50.00%) LDAP
3 3 (50.00%) LINQ
3 3 (50.00%) Lucene
3 3 (50.00%) OpenID
3 3 (50.00%) Swagger
3 3 (50.00%) WSDL
3 3 (50.00%) XML
3 3 (50.00%) XML Schema
3 3 (50.00%) XSLT
4 1 (16.67%) .NET
4 1 (16.67%) HATEOAS
4 1 (16.67%) Web Services
Miscellaneous
1 3 (50.00%) Fintech
1 3 (50.00%) PKI
Processes & Methodologies
1 3 (50.00%) Business Intelligence
1 3 (50.00%) Data Integration
1 3 (50.00%) Defect Management
1 3 (50.00%) ETL
1 3 (50.00%) Identity Management
1 3 (50.00%) Integration Testing
1 3 (50.00%) MapReduce
1 3 (50.00%) Regression Testing
1 3 (50.00%) SOA
1 3 (50.00%) System Integration Testing
1 3 (50.00%) User Stories
2 1 (16.67%) API Design
2 1 (16.67%) API Development
2 1 (16.67%) SDLC
2 1 (16.67%) Strategic Thinking
2 1 (16.67%) Target Operating Model
2 1 (16.67%) Test Management
Programming Languages
1 6 (100.00%) Java
2 3 (50.00%) C#
2 3 (50.00%) Python
2 3 (50.00%) Ruby
2 3 (50.00%) SQL
2 3 (50.00%) XPath
System Software
1 1 (16.67%) Active Directory
Systems Management
1 1 (16.67%) Single Sign-On