Period
to 16 August 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 16 August 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
16 Aug 2018
Same period 2017 Same period 2016
Rank 182 197 205
Rank change year-on-year +15 +8 -6
Contract jobs citing SSL 78 46 39
As % of all contract IT jobs advertised in the City of London 1.12% 0.70% 0.57%
As % of the Communications & Networking category 9.09% 6.54% 4.14%
Number of daily rates quoted 61 33 31
City of London median daily rate £513 £550 £470
Median daily rate % change year-on-year -6.82% +17.02% +4.44%
10th Percentile £408 £413 £338
90th Percentile £713 £665 £588
Central London median daily rate £506 £550 £500
% change year-on-year -7.95% +10.00% +11.11%
Number of hourly rates quoted 0 1 0
City of London median hourly rate - £30.00 -
Central London median hourly rate - £30.00 -

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 858 703 941
As % of all contract IT jobs advertised in the City of London 12.30% 10.66% 13.84%
Number of daily rates quoted 675 528 732
City of London median daily rate £450 £450 £443
Median daily rate % change year-on-year - +1.64% +4.18%
10th Percentile £206 £185 £263
90th Percentile £638 £641 £588
Central London median daily rate £450 £450 £440
% change year-on-year - +2.21% +3.59%
Number of hourly rates quoted 26 22 15
City of London median hourly rate £18.85 £21.16 £19.00
Median hourly rate % change year-on-year -10.90% +11.34% +3.60%
10th Percentile £14.50 £13.32 £11.50
90th Percentile £34.13 £29.98 £26.75
Central London median hourly rate £19.00 £21.16 £19.00
% change year-on-year -10.19% +11.34% +1.60%

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 16 August 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 16 August 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 49 (62.82%) Linux
2 48 (61.54%) Amazon AWS
3 44 (56.41%) OAuth
3 44 (56.41%) JavaScript
4 43 (55.13%) Java
4 43 (55.13%) DNS
5 42 (53.85%) TCP/IP
6 41 (52.56%) HTTP
7 36 (46.15%) FTP
8 35 (44.87%) Docker
9 34 (43.59%) Git (software)
10 33 (42.31%) Agile Software Development
11 32 (41.03%) HTML
11 32 (41.03%) SOAP
11 32 (41.03%) OWASP
11 32 (41.03%) HTML5
11 32 (41.03%) Heroku
11 32 (41.03%) REST
11 32 (41.03%) OAuth2
11 32 (41.03%) Microservices
11 32 (41.03%) Java 8
12 31 (39.74%) MongoDB
13 30 (38.46%) AngularJS
13 30 (38.46%) CSS
14 29 (37.18%) GitLab
14 29 (37.18%) ES6
15 28 (35.90%) Kafka
15 28 (35.90%) Apache Cassandra
16 27 (34.62%) Apache Spark
17 23 (29.49%) PostgreSQL

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 27 (34.62%) Apache Spark
2 19 (24.36%) Elasticsearch
3 13 (16.67%) Apache
4 6 (7.69%) Apache Solr
5 2 (2.56%) MS Exchange
5 2 (2.56%) nginx
6 1 (1.28%) Confluence
6 1 (1.28%) Exchange Server 2010
6 1 (1.28%) IIS
6 1 (1.28%) JBoss
6 1 (1.28%) SharePoint
6 1 (1.28%) SharePoint Server
6 1 (1.28%) WebSphere
6 1 (1.28%) WebSphere Application Server
Applications
1 2 (2.56%) Microsoft Office
2 1 (1.28%) Microsoft Excel
Business Applications
1 1 (1.28%) Payment Gateway
1 1 (1.28%) RMDS
Cloud Services
1 48 (61.54%) Amazon AWS
2 32 (41.03%) Heroku
3 7 (8.97%) Microsoft Azure
4 2 (2.56%) Google Cloud Platform
5 1 (1.28%) Amazon EC2
5 1 (1.28%) Amazon S3
5 1 (1.28%) Azure Active Directory
5 1 (1.28%) Cloud Computing
5 1 (1.28%) Route 53
5 1 (1.28%) Virtual Private Cloud
Communications & Networking
1 43 (55.13%) DNS
2 42 (53.85%) TCP/IP
3 41 (52.56%) HTTP
4 36 (46.15%) FTP
5 10 (12.82%) Firewall
6 7 (8.97%) Kerberos
7 6 (7.69%) Internet
8 5 (6.41%) VPN
9 4 (5.13%) BIG-IP
9 4 (5.13%) HTTPS
9 4 (5.13%) Wireshark
10 3 (3.85%) DHCP
10 3 (3.85%) Intranet
10 3 (3.85%) IPsec
10 3 (3.85%) Network Security
10 3 (3.85%) SSH
10 3 (3.85%) WAN
11 2 (2.56%) 3G
11 2 (2.56%) Extranet
11 2 (2.56%) LAN
Database & Business Intelligence
1 31 (39.74%) MongoDB
2 28 (35.90%) Apache Cassandra
3 23 (29.49%) PostgreSQL
4 17 (21.79%) Hadoop
5 12 (15.38%) Big Data
6 10 (12.82%) NoSQL
6 10 (12.82%) Redis
7 6 (7.69%) Apache Hive
7 6 (7.69%) HBase
7 6 (7.69%) SQL Server
8 4 (5.13%) MySQL
9 3 (3.85%) Relational Database
10 1 (1.28%) Informix
10 1 (1.28%) MariaDB
10 1 (1.28%) SQL Server 2016
Development Applications
1 34 (43.59%) Git (software)
2 29 (37.18%) GitLab
3 22 (28.21%) Gradle
4 19 (24.36%) gulp
5 15 (19.23%) Jenkins
6 11 (14.10%) Maven
7 7 (8.97%) Gatling
7 7 (8.97%) Geb
7 7 (8.97%) Spock
8 4 (5.13%) Visual Studio
9 3 (3.85%) webpack
10 2 (2.56%) Artifactory
10 2 (2.56%) Fiddler
10 2 (2.56%) JIRA
11 1 (1.28%) Vagrant
General
1 9 (11.54%) Finance
2 8 (10.26%) Banking
3 4 (5.13%) Retail Banking
4 1 (1.28%) Spanish Language
Job Titles
1 44 (56.41%) Developer
2 23 (29.49%) Java Developer
3 11 (14.10%) Agile Developer
3 11 (14.10%) Agile Java Developer
4 10 (12.82%) Ruby Developer
5 8 (10.26%) Technical Leader
6 7 (8.97%) Consultant
6 7 (8.97%) Lead Developer
6 7 (8.97%) Lead Java Developer
6 7 (8.97%) Senior Developer
6 7 (8.97%) Senior Java Developer
6 7 (8.97%) Technical Developer
7 6 (7.69%) Analyst
7 6 (7.69%) Full Stack Developer
8 5 (6.41%) Principal Consultant
9 4 (5.13%) Architect
9 4 (5.13%) C# Developer
9 4 (5.13%) Hadoop Consultant
9 4 (5.13%) Security Analyst
10 3 (3.85%) Administrator
Libraries, Frameworks & Software Standards
1 44 (56.41%) OAuth
2 32 (41.03%) HTML
2 32 (41.03%) HTML5
2 32 (41.03%) OAuth2
2 32 (41.03%) REST
2 32 (41.03%) SOAP
3 30 (38.46%) AngularJS
3 30 (38.46%) CSS
4 28 (35.90%) Kafka
5 22 (28.21%) Dropwizard
5 22 (28.21%) Guice
5 22 (28.21%) Ratpack
6 19 (24.36%) Ember.js
6 19 (24.36%) Spring
6 19 (24.36%) Spring Boot
7 13 (16.67%) Node.js
8 12 (15.38%) RabbitMQ
8 12 (15.38%) SAML
9 11 (14.10%) RESTful
9 11 (14.10%) Ruby on Rails
Miscellaneous
1 11 (14.10%) Mobile App
2 10 (12.82%) Credit Risk
2 10 (12.82%) Fintech
3 4 (5.13%) Linux Command Line
4 3 (3.85%) Public Cloud
4 3 (3.85%) Self-Motivation
5 2 (2.56%) Analytical Skills
5 2 (2.56%) Greenfield Project
6 1 (1.28%) Computer Science
6 1 (1.28%) Derivative
6 1 (1.28%) PKI
6 1 (1.28%) Smartphone
Operating Systems
1 49 (62.82%) Linux
2 12 (15.38%) Android
3 11 (14.10%) Apple iOS
4 8 (10.26%) Unix
5 7 (8.97%) Red Hat Enterprise Linux
6 6 (7.69%) Windows
7 4 (5.13%) Windows Server
8 3 (3.85%) CoreOS
9 1 (1.28%) Solaris
9 1 (1.28%) SUSE
9 1 (1.28%) SUSE Linux Enterprise Server
9 1 (1.28%) Ubuntu
9 1 (1.28%) Windows 10
9 1 (1.28%) Windows 7
Processes & Methodologies
1 33 (42.31%) Agile Software Development
2 32 (41.03%) Microservices
2 32 (41.03%) OWASP
3 22 (28.21%) Domain-Driven Design
4 20 (25.64%) TDD
5 17 (21.79%) BDD
6 14 (17.95%) Software Engineering
7 12 (15.38%) Configuration Management
8 11 (14.10%) Identity Access Management
8 11 (14.10%) Mobile Application Development
9 10 (12.82%) Functional Programming
9 10 (12.82%) Parallel Computing
9 10 (12.82%) Parallel Processing
10 8 (10.26%) API Development
10 8 (10.26%) Digital Transformation Programme
10 8 (10.26%) System Testing
11 6 (7.69%) Change Management
11 6 (7.69%) DevOps
12 5 (6.41%) Capacity Management
12 5 (6.41%) MVC
Programming Languages
1 44 (56.41%) JavaScript
2 43 (55.13%) Java
3 32 (41.03%) Java 8
4 29 (37.18%) ES6
5 19 (24.36%) TypeScript
6 17 (21.79%) Python
7 13 (16.67%) Ruby
8 5 (6.41%) C#
9 4 (5.13%) Groovy
9 4 (5.13%) Perl
10 3 (3.85%) Bash Shell
10 3 (3.85%) Shell Script
10 3 (3.85%) SQL
11 1 (1.28%) C
11 1 (1.28%) Go
11 1 (1.28%) PHP
11 1 (1.28%) Scala
Qualifications
1 2 (2.56%) CISSP
1 2 (2.56%) Security Cleared
2 1 (1.28%) CCNP
2 1 (1.28%) CEH
2 1 (1.28%) Cisco Certification
2 1 (1.28%) SC Cleared
Quality Assurance & Compliance
1 5 (6.41%) QA
2 4 (5.13%) HL7
System Software
1 35 (44.87%) Docker
2 10 (12.82%) Active Directory
3 6 (7.69%) Apache Flume
3 6 (7.69%) Apache ZooKeeper
3 6 (7.69%) HDFS
4 2 (2.56%) Firmware
5 1 (1.28%) Hyper-V
5 1 (1.28%) Microsoft App-V
5 1 (1.28%) pfSense
5 1 (1.28%) ProxySG
5 1 (1.28%) vCloud
5 1 (1.28%) VMware Infrastructure
Systems Management
1 22 (28.21%) Docker Swarm
2 15 (19.23%) Kubernetes
3 10 (12.82%) Marathon
3 10 (12.82%) Mesos
4 7 (8.97%) Puppet
5 6 (7.69%) Ambari
5 6 (7.69%) Ansible
5 6 (7.69%) Apache Slider
5 6 (7.69%) Hadoop YARN
5 6 (7.69%) Oozie
6 5 (6.41%) Terraform
7 2 (2.56%) Grafana
7 2 (2.56%) Kibana
7 2 (2.56%) logstash
7 2 (2.56%) Nessus
8 1 (1.28%) CFEngine
8 1 (1.28%) collectd
8 1 (1.28%) HAProxy
8 1 (1.28%) Opscode Chef
8 1 (1.28%) SCCM
Vendors
1 12 (15.38%) Google
2 11 (14.10%) Apigee
3 7 (8.97%) IBM
4 6 (7.69%) Hortonworks
4 6 (7.69%) Microsoft
5 5 (6.41%) Cisco
5 5 (6.41%) F5
6 4 (5.13%) Palo Alto
7 3 (3.85%) Qualys
7 3 (3.85%) VMware
8 2 (2.56%) Empirix
8 2 (2.56%) Ericsson
8 2 (2.56%) Nokia
8 2 (2.56%) Red Hat
8 2 (2.56%) Splunk
9 1 (1.28%) Apple
9 1 (1.28%) Aruba
9 1 (1.28%) Riverbed
9 1 (1.28%) SaltStack
9 1 (1.28%) Trustwave