Period
to 10 December 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for SSL skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited SSL over the 6 months to 10 December 2018 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.

Secure Socket Layer (SSL)
Central London > City of London
6 months to
10 Dec 2018
Same period 2017 Same period 2016
Rank 208 190 179
Rank change year-on-year -18 -11 +31
Contract jobs citing SSL 55 56 59
As % of all contract IT jobs advertised in the City of London 0.77% 0.78% 0.91%
As % of the Communications & Networking category 7.09% 7.43% 6.47%
Number of daily rates quoted 48 48 50
City of London median daily rate £581 £550 £425
Median daily rate % change year-on-year +5.68% +29.41% -5.56%
10th Percentile £413 £371 £359
90th Percentile £713 £688 £525
Central London median daily rate £538 £550 £473
% change year-on-year -2.27% +16.40% +5.00%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

SSL 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 776 754 912
As % of all contract IT jobs advertised in the City of London 10.87% 10.56% 13.99%
Number of daily rates quoted 601 585 702
City of London median daily rate £425 £450 £450
Median daily rate % change year-on-year -5.56% - +5.88%
10th Percentile £156 £203 £298
90th Percentile £638 £625 £588
Central London median daily rate £425 £450 £450
% change year-on-year -5.56% - +5.88%
Number of hourly rates quoted 31 13 16
City of London median hourly rate £18.70 £17.00 £19.00
Median hourly rate % change year-on-year +10.00% -10.53% +7.10%
10th Percentile £13.00 £11.30 £11.50
90th Percentile £25.50 £23.30 £55.00
Central London median hourly rate £18.88 £16.50 £19.00
% change year-on-year +14.42% -13.16% +7.10%

SSL
Job Vacancy Trend in the City of London

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

Job vacancy trend for SSL in the City of London

SSL
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 SSL in the City of London.

Contractor daily rate trend for SSL in the City of London

SSL
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing SSL in the City of London over the 6 months to 10 December 2018.

Contractor daily rate histogram for SSL in the City of London

SSL
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing SSL in the City of London.

Contractor hourly rate trend for SSL in the City of London

For the 6 months to 10 December 2018, IT contractor jobs citing SSL 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 SSL.

1 41 (74.55%) DNS
2 38 (69.09%) TCP/IP
3 34 (61.82%) HTTP
3 34 (61.82%) Linux
4 33 (60.00%) FTP
5 30 (54.55%) Java
5 30 (54.55%) OWASP
5 30 (54.55%) Amazon AWS
6 29 (52.73%) Git (software)
7 28 (50.91%) OAuth
8 27 (49.09%) JavaScript
8 27 (49.09%) CSS
8 27 (49.09%) SOAP
8 27 (49.09%) HTML
8 27 (49.09%) HTML5
8 27 (49.09%) Heroku
8 27 (49.09%) REST
8 27 (49.09%) AngularJS
8 27 (49.09%) OAuth2
8 27 (49.09%) Docker
8 27 (49.09%) Microservices
8 27 (49.09%) GitLab
8 27 (49.09%) ES6
8 27 (49.09%) Java 8
9 26 (47.27%) MongoDB
10 25 (45.45%) TypeScript
10 25 (45.45%) Elasticsearch
10 25 (45.45%) Ember.js
10 25 (45.45%) Gradle
10 25 (45.45%) Domain-Driven Design

SSL
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 25 (45.45%) Elasticsearch
2 20 (36.36%) Apache Spark
3 5 (9.09%) Apache
4 4 (7.27%) IIS
5 2 (3.64%) Apache Solr
5 2 (3.64%) Skype for Business
6 1 (1.82%) Confluence
6 1 (1.82%) JBoss
6 1 (1.82%) Jetty
6 1 (1.82%) Mongrel
6 1 (1.82%) nginx
6 1 (1.82%) SharePoint
6 1 (1.82%) SharePoint Server
6 1 (1.82%) Tomcat
6 1 (1.82%) WebSphere
6 1 (1.82%) WebSphere Application Server
Applications
1 1 (1.82%) Microsoft Excel
1 1 (1.82%) Microsoft Office
Cloud Services
1 30 (54.55%) Amazon AWS
2 27 (49.09%) Heroku
3 7 (12.73%) Microsoft Azure
4 3 (5.45%) Google Cloud Platform
5 2 (3.64%) Azure Active Directory
6 1 (1.82%) Amazon EC2
6 1 (1.82%) Google App Engine
6 1 (1.82%) IaaS
6 1 (1.82%) PaaS
6 1 (1.82%) SaaS
Communications & Networking
1 41 (74.55%) DNS
2 38 (69.09%) TCP/IP
3 34 (61.82%) HTTP
4 33 (60.00%) FTP
5 15 (27.27%) Firewall
6 13 (23.64%) VPN
7 12 (21.82%) DHCP
7 12 (21.82%) IPsec
8 11 (20.00%) WAN
8 11 (20.00%) Wireless
9 9 (16.36%) Cisco ASA
10 8 (14.55%) Cisco Nexus
10 8 (14.55%) LAN
10 8 (14.55%) OSPF
10 8 (14.55%) VoIP
11 7 (12.73%) BGP
12 5 (9.09%) WLAN
13 4 (7.27%) HTTPS
14 3 (5.45%) Ethernet
14 3 (5.45%) MPLS
Database & Business Intelligence
1 26 (47.27%) MongoDB
2 18 (32.73%) Apache Cassandra
2 18 (32.73%) Hadoop
3 16 (29.09%) Big Data
4 10 (18.18%) PostgreSQL
5 2 (3.64%) Apache Hive
5 2 (3.64%) HBase
5 2 (3.64%) NoSQL
5 2 (3.64%) Redis
6 1 (1.82%) SQL Server
6 1 (1.82%) SQL Server 2016
Development Applications
1 29 (52.73%) Git (software)
2 27 (49.09%) GitLab
3 25 (45.45%) Gradle
3 25 (45.45%) gulp
4 8 (14.55%) Gatling
4 8 (14.55%) Geb
4 8 (14.55%) Spock
5 2 (3.64%) Sonatype Nexus
6 1 (1.82%) Burp Suite
6 1 (1.82%) Jenkins
6 1 (1.82%) JIRA
6 1 (1.82%) Metasploit
6 1 (1.82%) Travis CI
General
1 4 (7.27%) Manufacturing
1 4 (7.27%) Telecoms
2 3 (5.45%) Finance
3 1 (1.82%) Legal
Job Titles
1 28 (50.91%) Developer
2 24 (43.64%) Java Developer
3 13 (23.64%) Technical Leader
4 12 (21.82%) Agile Developer
4 12 (21.82%) Agile Java Developer
4 12 (21.82%) Lead Developer
4 12 (21.82%) Lead Java Developer
4 12 (21.82%) Senior Developer
4 12 (21.82%) Senior Java Developer
4 12 (21.82%) Technical Developer
5 9 (16.36%) Network Engineer
6 5 (9.09%) Cisco Engineer
6 5 (9.09%) Cisco Network Engineer
7 4 (7.27%) Architect
8 3 (5.45%) Infrastructure Engineer
8 3 (5.45%) Network Architect
9 2 (3.64%) Analyst
9 2 (3.64%) Principal Consultant
9 2 (3.64%) Security Analyst
9 2 (3.64%) Senior Network Engineer
Libraries, Frameworks & Software Standards
1 28 (50.91%) OAuth
2 27 (49.09%) AngularJS
2 27 (49.09%) CSS
2 27 (49.09%) HTML
2 27 (49.09%) HTML5
2 27 (49.09%) OAuth2
2 27 (49.09%) REST
2 27 (49.09%) SOAP
3 25 (45.45%) Dropwizard
3 25 (45.45%) Ember.js
3 25 (45.45%) Guice
3 25 (45.45%) Ratpack
3 25 (45.45%) Spring
3 25 (45.45%) Spring Boot
4 20 (36.36%) Kafka
5 8 (14.55%) WireMock
6 4 (7.27%) 802.1X
7 3 (5.45%) .NET
7 3 (5.45%) React
8 2 (3.64%) J2EE
Miscellaneous
1 6 (10.91%) Data Centre
2 4 (7.27%) Analytical Skills
3 2 (3.64%) Credit Risk
3 2 (3.64%) Fintech
4 1 (1.82%) Cloud Native
4 1 (1.82%) Distributed Denial-of-Service
4 1 (1.82%) Linux Command Line
4 1 (1.82%) Management Information System
4 1 (1.82%) PKI
4 1 (1.82%) Self-Motivation
Operating Systems
1 34 (61.82%) Linux
2 11 (20.00%) Windows
3 8 (14.55%) Unix
4 5 (9.09%) Windows Server
5 3 (5.45%) Red Hat Enterprise Linux
6 2 (3.64%) Windows Server 2003
6 2 (3.64%) Windows Server 2008
6 2 (3.64%) Windows Server 2012
7 1 (1.82%) Android
7 1 (1.82%) Kali Linux
Processes & Methodologies
1 30 (54.55%) OWASP
2 27 (49.09%) Microservices
3 25 (45.45%) Domain-Driven Design
4 15 (27.27%) Agile Software Development
5 10 (18.18%) BDD
5 10 (18.18%) TDD
6 8 (14.55%) Digital Transformation Programme
6 8 (14.55%) Software Engineering
7 6 (10.91%) Information Security
7 6 (10.91%) Network Monitoring
8 4 (7.27%) Network Architecture
9 3 (5.45%) DevOps
9 3 (5.45%) Infrastructure Engineering
9 3 (5.45%) Migration
9 3 (5.45%) Penetration Testing
9 3 (5.45%) Root Cause Analysis
9 3 (5.45%) Task Automation
10 2 (3.64%) Cryptography
10 2 (3.64%) Functional Programming
10 2 (3.64%) Performance Monitoring
Programming Languages
1 30 (54.55%) Java
2 27 (49.09%) ES6
2 27 (49.09%) Java 8
2 27 (49.09%) JavaScript
3 25 (45.45%) TypeScript
4 5 (9.09%) Python
5 4 (7.27%) Perl
5 4 (7.27%) Ruby
5 4 (7.27%) SQL
6 3 (5.45%) C
7 2 (3.64%) C++
7 2 (3.64%) PowerShell
7 2 (3.64%) Shell Script
8 1 (1.82%) Bash Shell
8 1 (1.82%) Go
8 1 (1.82%) Kotlin
Qualifications
1 11 (20.00%) Cisco Certification
2 5 (9.09%) CCIE
3 4 (7.27%) CCIE Routing and Switching
3 4 (7.27%) CCNA
3 4 (7.27%) CCNP
4 3 (5.45%) Degree
5 2 (3.64%) CEH
5 2 (3.64%) SC Cleared
5 2 (3.64%) Security Cleared
6 1 (1.82%) CCSP
6 1 (1.82%) CISSP
6 1 (1.82%) CREST Certified
Quality Assurance & Compliance
1 3 (5.45%) HIPAA
1 3 (5.45%) Sarbanes-Oxley
2 1 (1.82%) FedRAMP
System Software
1 27 (49.09%) Docker
2 8 (14.55%) Active Directory
3 3 (5.45%) VMware Infrastructure
4 2 (3.64%) Apache Flume
4 2 (3.64%) Apache ZooKeeper
4 2 (3.64%) HDFS
5 1 (1.82%) Hyper-V
5 1 (1.82%) ProxySG
5 1 (1.82%) Xen
Systems Management
1 25 (45.45%) Docker Swarm
2 17 (30.91%) Kubernetes
3 2 (3.64%) Ambari
3 2 (3.64%) Ansible
3 2 (3.64%) Apache Slider
3 2 (3.64%) Hadoop YARN
3 2 (3.64%) Marathon
3 2 (3.64%) Mesos
3 2 (3.64%) Oozie
3 2 (3.64%) Rundeck
3 2 (3.64%) Terraform
4 1 (1.82%) Cacti
4 1 (1.82%) CASB
4 1 (1.82%) collectd
4 1 (1.82%) Grafana
4 1 (1.82%) Graphite
4 1 (1.82%) Kibana
4 1 (1.82%) logstash
4 1 (1.82%) Nagios
4 1 (1.82%) Puppet
Vendors
1 11 (20.00%) Cisco
2 7 (12.73%) Palo Alto
3 6 (10.91%) Microsoft
4 5 (9.09%) F5
5 4 (7.27%) Meraki
5 4 (7.27%) SolarWinds
6 3 (5.45%) Google
6 3 (5.45%) VMware
7 2 (3.64%) Arista
7 2 (3.64%) Aruba
7 2 (3.64%) CheckPoint
7 2 (3.64%) Citrix
7 2 (3.64%) Empirix
7 2 (3.64%) Ericsson
7 2 (3.64%) Forcepoint
7 2 (3.64%) Hortonworks
7 2 (3.64%) Nokia
7 2 (3.64%) Splunk
8 1 (1.82%) NetWitness
8 1 (1.82%) Okta