Period
to 20 January 2019

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for SSL skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited SSL over the 6 months to 20 January 2019 with a comparison to the same period in the previous 2 years.

Secure Socket Layer (SSL)
Central London > City of London
6 months to
20 Jan 2019
Same period 2018 Same period 2017
Rank 296 298 274
Rank change year-on-year +2 -24 +21
Permanent jobs citing SSL 34 41 74
As % of all permanent IT jobs advertised in the City of London 0.34% 0.39% 0.69%
As % of the Communications & Networking category 2.67% 2.74% 4.28%
Number of salaries quoted 31 36 65
City of London median annual salary £50,000 £57,500 £60,000
Median salary % change year-on-year -13.04% -4.17% +9.09%
10th Percentile £37,500 £39,375 £36,250
90th Percentile £77,500 £90,000 £78,500
Central London median annual salary £50,000 £55,000 £60,000
% change year-on-year -9.09% -8.33% +9.09%

SSL is in the Communications and Computer Networking category. The following table is for comparison with the above and provides summary statistics for all permanent 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
Permanent vacancies with a requirement for communications or computer networking skills 1,275 1,497 1,727
As % of all permanent IT jobs advertised in the City of London 12.57% 14.32% 16.21%
Number of salaries quoted 1,135 1,354 1,541
City of London median annual salary £55,000 £55,000 £55,000
10th Percentile £31,250 £32,150 £29,000
90th Percentile £89,600 £82,500 £80,000
Central London median annual salary £55,000 £52,500 £54,750
% change year-on-year +4.76% -4.11% +9.50%

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
Salary Trend in the City of London

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

Salary trend for SSL in the City of London

SSL
Salary Histogram in the City of London

The salary distribution of IT jobs citing SSL in the City of London over the 6 months to 20 January 2019.

Salary histogram for SSL in the City of London

For the 6 months to 20 January 2019, IT 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 permanent job ads across the City of London region with a requirement for SSL.

1 29 (85.29%) Windows
2 26 (76.47%) Firewall
3 21 (61.76%) Active Directory
4 20 (58.82%) DNS
5 18 (52.94%) Linux
6 17 (50.00%) Apache
6 17 (50.00%) SQL
7 16 (47.06%) SQL Server
8 14 (41.18%) Microsoft
9 13 (38.24%) TCP/IP
9 13 (38.24%) PowerShell
10 12 (35.29%) Problem-Solving
11 11 (32.35%) Self-Motivation
11 11 (32.35%) Windows Server
11 11 (32.35%) GDPR
11 11 (32.35%) VLAN
11 11 (32.35%) VMware
12 10 (29.41%) VPN
12 10 (29.41%) HTTP
12 10 (29.41%) Java
12 10 (29.41%) Tomcat
12 10 (29.41%) ISO/IEC 27001
12 10 (29.41%) Load Balancing
12 10 (29.41%) HIPAA
12 10 (29.41%) Cyber Essentials
12 10 (29.41%) VMware Infrastructure
12 10 (29.41%) Amazon AWS
12 10 (29.41%) SaaS
12 10 (29.41%) Puppet
12 10 (29.41%) Splunk

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 17 (50.00%) Apache
2 10 (29.41%) Tomcat
3 8 (23.53%) Apache Solr
3 8 (23.53%) IIS
4 4 (11.76%) Skype for Business
5 3 (8.82%) Office Communications Server
5 3 (8.82%) SharePoint
6 1 (2.94%) Confluence
Business Applications
1 1 (2.94%) Dynamics CRM
Cloud Services
1 10 (29.41%) Amazon AWS
1 10 (29.41%) SaaS
2 7 (20.59%) Microsoft Azure
3 4 (11.76%) Amazon EC2
4 3 (8.82%) IaaS
4 3 (8.82%) PaaS
5 2 (5.88%) Office 365
6 1 (2.94%) Cloudflare
6 1 (2.94%) Route 53
Communications & Networking
1 26 (76.47%) Firewall
2 20 (58.82%) DNS
3 13 (38.24%) TCP/IP
4 11 (32.35%) VLAN
5 10 (29.41%) HTTP
5 10 (29.41%) VPN
6 6 (17.65%) DHCP
7 5 (14.71%) SAN
8 4 (11.76%) MPLS
8 4 (11.76%) PBX
8 4 (11.76%) VPLS
9 3 (8.82%) Cisco IOS
9 3 (8.82%) IPsec
9 3 (8.82%) Kerberos
9 3 (8.82%) LAN
9 3 (8.82%) Reverse Proxy
9 3 (8.82%) Wireless
10 2 (5.88%) Network Security
10 2 (5.88%) WLAN
11 1 (2.94%) Cisco PIX
Database & Business Intelligence
1 16 (47.06%) SQL Server
2 5 (14.71%) SQL Server 2012
2 5 (14.71%) SQL Server 2016
3 4 (11.76%) MySQL
4 3 (8.82%) Apache Cassandra
4 3 (8.82%) Apache Hive
4 3 (8.82%) HBase
4 3 (8.82%) MariaDB
4 3 (8.82%) Scylla
5 1 (2.94%) Big Data
5 1 (2.94%) NoSQL
5 1 (2.94%) PostgreSQL
Development Applications
1 1 (2.94%) FishEye
1 1 (2.94%) FogBugz
1 1 (2.94%) Hudson
1 1 (2.94%) Jenkins
1 1 (2.94%) JIRA
General
1 6 (17.65%) Retail
2 5 (14.71%) Finance
3 3 (8.82%) Banking
4 1 (2.94%) Advertising
4 1 (2.94%) Telecoms
Job Titles
1 11 (32.35%) Support Engineer
2 9 (26.47%) Applications Engineer
2 9 (26.47%) Applications Support
2 9 (26.47%) Applications Support Engineer
2 9 (26.47%) Web Applications Engineer
2 9 (26.47%) Web Applications Support
2 9 (26.47%) Web Engineer
2 9 (26.47%) Web Support Engineer
3 8 (23.53%) Infrastructure Engineer
4 5 (14.71%) Network Engineer
5 4 (11.76%) 3rd Line Engineer
5 4 (11.76%) 3rd Line Support
5 4 (11.76%) 3rd Line Support Engineer
5 4 (11.76%) Monitoring Engineer
5 4 (11.76%) Senior Network Engineer
6 3 (8.82%) Azure Architect
6 3 (8.82%) Citrix Engineer
6 3 (8.82%) Senior VMware Engineer
6 3 (8.82%) Solutions Architect
6 3 (8.82%) VMware Engineer
Libraries, Frameworks & Software Standards
1 6 (17.65%) LDAP
2 3 (8.82%) Kafka
3 1 (2.94%) 802.1X
3 1 (2.94%) HTML
3 1 (2.94%) Middleware
3 1 (2.94%) WebSphere MQ
3 1 (2.94%) XML
Miscellaneous
1 11 (32.35%) Self-Motivation
2 9 (26.47%) Data Centre
3 4 (11.76%) Public Cloud
4 3 (8.82%) Clustering
4 3 (8.82%) Fintech
5 2 (5.88%) Management Information System
6 1 (2.94%) Analytical Skills
6 1 (2.94%) Client/Server
6 1 (2.94%) Data Protection Act
6 1 (2.94%) Handset
6 1 (2.94%) Replication
6 1 (2.94%) Video Conferencing
Operating Systems
1 29 (85.29%) Windows
2 18 (52.94%) Linux
3 11 (32.35%) Windows Server
4 5 (14.71%) CentOS
4 5 (14.71%) Red Hat Enterprise Linux
4 5 (14.71%) Windows Server 2008
5 4 (11.76%) Windows Server 2003
5 4 (11.76%) Windows Server 2012
6 2 (5.88%) Android
6 2 (5.88%) Ubuntu
7 1 (2.94%) Unix
7 1 (2.94%) VMS
7 1 (2.94%) Windows 10
Processes & Methodologies
1 12 (35.29%) Problem-Solving
2 10 (29.41%) Continuous Improvement
2 10 (29.41%) Cybersecurity
2 10 (29.41%) Load Balancing
2 10 (29.41%) Performance Monitoring
2 10 (29.41%) Performance Tuning
2 10 (29.41%) Technical Analysis
2 10 (29.41%) Web Application Development
3 9 (26.47%) DevOps
4 7 (20.59%) Infrastructure Engineering
5 5 (14.71%) Configuration Management
5 5 (14.71%) Information Security
5 5 (14.71%) Root Cause Analysis
5 5 (14.71%) Task Automation
5 5 (14.71%) Virtual Infrastructure
6 4 (11.76%) Information Security Management
6 4 (11.76%) ISMS
6 4 (11.76%) Migration
6 4 (11.76%) Security Management
6 4 (11.76%) Service Management
Programming Languages
1 17 (50.00%) SQL
2 13 (38.24%) PowerShell
3 10 (29.41%) Java
4 1 (2.94%) Bash Shell
4 1 (2.94%) PHP
4 1 (2.94%) T-SQL
Qualifications
1 3 (8.82%) Cisco Certification
2 2 (5.88%) CCNA
2 2 (5.88%) Degree
3 1 (2.94%) CCNP
3 1 (2.94%) CCSP
3 1 (2.94%) MCSA
3 1 (2.94%) MCSE
3 1 (2.94%) Microsoft Certification
3 1 (2.94%) RHCSA
3 1 (2.94%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 11 (32.35%) GDPR
2 10 (29.41%) Cyber Essentials
2 10 (29.41%) HIPAA
2 10 (29.41%) ISO/IEC 27001
System Software
1 21 (61.76%) Active Directory
2 10 (29.41%) VMware Infrastructure
3 6 (17.65%) Hyper-V
4 3 (8.82%) HDFS
5 2 (5.88%) Apache ZooKeeper
5 2 (5.88%) Docker
5 2 (5.88%) VMware ESXi
6 1 (2.94%) Virtual Machines
6 1 (2.94%) VMware Workstation
6 1 (2.94%) vSphere
6 1 (2.94%) XenApp
6 1 (2.94%) XenServer
Systems Management
1 10 (29.41%) Ansible
1 10 (29.41%) Opscode Chef
1 10 (29.41%) Puppet
2 6 (17.65%) Nagios
3 5 (14.71%) SCOM
4 3 (8.82%) Microsoft Clustering
4 3 (8.82%) Oozie
5 2 (5.88%) Kubernetes
6 1 (2.94%) Backup Exec
6 1 (2.94%) Grafana
6 1 (2.94%) NetBackup
6 1 (2.94%) Prometheus
6 1 (2.94%) vCenter Server
Vendors
1 14 (41.18%) Microsoft
2 11 (32.35%) VMware
3 10 (29.41%) Splunk
4 6 (17.65%) Cisco
4 6 (17.65%) Citrix
5 5 (14.71%) HP
6 3 (8.82%) Hortonworks
6 3 (8.82%) Red Hat
7 2 (5.88%) Google
8 1 (2.94%) 3Com
8 1 (2.94%) Dell
8 1 (2.94%) IBM
8 1 (2.94%) Oracle
8 1 (2.94%) Perforce
8 1 (2.94%) Salesforce.com
8 1 (2.94%) SonicWALL
8 1 (2.94%) Symantec
8 1 (2.94%) Synology
8 1 (2.94%) Veeam
8 1 (2.94%) Veritas