The table below looks at the prevalence of the term Clustering in permanent job vacancies advertised in the City of London. Included is a benchmarking guide to the salaries offered in vacancies that have cited Clustering over the 3 months to 24 June 2017 with a comparison to the same period over the previous 2 years.

Clustering
London / City of London
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 180 184 242
Rank change year-on-year +4 +58  
Permanent jobs citing Clustering 56 78 77
As % of all permanent IT jobs advertised in the City of London 1.09% 1.23% 0.74%
As % of the Miscellaneous category 2.31% 2.63% 1.70%
Number of salaries quoted 47 73 66
Median salary £65,000 £55,000 £57,500
Median salary % change year-on-year +18.18% -4.34%  
90% offered a salary of more than £47,500 £42,500 £45,000
10% offered a salary of more than £81,500 £69,500 £68,750
UK excluding London median salary £45,000 £44,000 £44,500
% change year-on-year +2.27% -1.12%  

Clustering is in the generic IT skills category. The next 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 generic IT skills.

Generic IT Skills
City of London
Permanent job vacancies with a requirement for generic IT skills 2429 2968 4530
As % of all permanent IT job vacancies advertised in the City of London 47.19% 46.75% 43.61%
Number of salaries quoted 2134 2669 3732
Median salary £62,500 £60,000 £57,500
Median salary % change year-on-year +4.16% +4.34%  
90% offered a salary of more than £35,000 £37,500 £35,500
10% offered a salary of more than £90,000 £82,500 £82,500
UK excluding London median salary £42,500 £42,500 £40,000
% change year-on-year - +6.25%  

Clustering
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Clustering as a proportion of all permanent or contract IT jobs with a match in the Miscellaneous category.

Job vacancy trend for Clustering in the City of London

Clustering
Salary Trend in the City of London

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

Salary trend for Clustering in the City of London

Clustering
Salary Histogram in the City of London

The salary distribution of IT jobs citing Clustering in the City of London over the 3 months to 24 June 2017.

Salary histogram for Clustering in the City of London

For the 6 months to 24 June 2017, IT jobs citing Clustering also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for Clustering.

1 73 (57.48%) Windows
2 56 (44.09%) Microsoft
3 54 (42.52%) SQL Server
4 52 (40.94%) SQL
5 51 (40.16%) Finance
6 49 (38.58%) VMware
7 48 (37.80%) ITIL
8 46 (36.22%) SAN
9 38 (29.92%) Disaster Recovery
10 37 (29.13%) Active Directory
11 35 (27.56%) Linux
11 35 (27.56%) High Availability
12 32 (25.20%) Windows Server
13 30 (23.62%) Windows Server 2012
13 30 (23.62%) VMware Infrastructure
13 30 (23.62%) MS Exchange
14 27 (21.26%) SQL Server Integration Services
15 26 (20.47%) Replication
16 25 (19.69%) SQL Server Reporting Services
16 25 (19.69%) Oracle
16 25 (19.69%) Windows Server 2008
17 23 (18.11%) PowerShell
18 20 (15.75%) Citrix
18 20 (15.75%) SQL Server 2008
19 19 (14.96%) JavaScript
19 19 (14.96%) Cisco
20 18 (14.17%) Exchange Server 2010
21 17 (13.39%) Performance Tuning
21 17 (13.39%) Hyper-V
21 17 (13.39%) Microsoft Clustering

Clustering
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 30 (23.62%) MS Exchange
2 18 (14.17%) Exchange Server 2010
3 16 (12.60%) IIS
3 16 (12.60%) SharePoint
4 10 (7.87%) Exchange Server 2013
5 9 (7.09%) Skype for Business
6 8 (6.30%) SharePoint 2013
7 7 (5.51%) Apache
7 7 (5.51%) Exchange Server 2007
8 2 (1.57%) CMS
8 2 (1.57%) JBoss
8 2 (1.57%) Tomcat
8 2 (1.57%) Umbraco
8 2 (1.57%) WebLogic
8 2 (1.57%) WebSphere
9 1 (0.79%) Apache ServiceMix
9 1 (0.79%) Blackberry Enterprise Server
9 1 (0.79%) Exchange Server 2003
9 1 (0.79%) OpenStack
Applications
1 3 (2.36%) Microsoft PowerPoint
1 3 (2.36%) Microsoft Project
1 3 (2.36%) MS Visio
2 2 (1.57%) Microsoft Office
Business Applications
1 9 (7.09%) Siebel Analytics
2 3 (2.36%) Revive Adserver
2 3 (2.36%) SAP Oil and Gas
3 1 (0.79%) Cognos Business Intelligence
Cloud Services
1 13 (10.24%) Microsoft Azure
2 7 (5.51%) Office 365
3 6 (4.72%) Amazon AWS
3 6 (4.72%) SaaS
4 4 (3.15%) Joyent
5 3 (2.36%) Cloud Computing
5 3 (2.36%) IaaS
6 1 (0.79%) Mimecast
Communications & Networking
1 46 (36.22%) SAN
2 17 (13.39%) DNS
3 15 (11.81%) Firewall
4 14 (11.02%) iSCSI
5 12 (9.45%) Cisco ASA
5 12 (9.45%) Network Security
6 10 (7.87%) VLAN
6 10 (7.87%) Wireless
7 8 (6.30%) DHCP
7 8 (6.30%) Skype
8 7 (5.51%) BGP
8 7 (5.51%) BIG-IP
8 7 (5.51%) Cisco Nexus
8 7 (5.51%) FCoE
8 7 (5.51%) Fibre Channel
8 7 (5.51%) IPv4
8 7 (5.51%) IPv6
8 7 (5.51%) MPLS
8 7 (5.51%) NetScaler
8 7 (5.51%) VPN
Database & Business Intelligence
1 54 (42.52%) SQL Server
2 27 (21.26%) SQL Server Integration Services
3 25 (19.69%) SQL Server Reporting Services
4 20 (15.75%) SQL Server 2008
5 13 (10.24%) Oracle Database
6 12 (9.45%) Business Intelligence Development Studio
7 11 (8.66%) Oracle BI EE
8 6 (4.72%) SQL Server Analysis Services
9 5 (3.94%) Data Warehouse
9 5 (3.94%) SQL Server 2014
10 4 (3.15%) Microsoft Analysis Services
10 4 (3.15%) OLAP
10 4 (3.15%) OLTP
10 4 (3.15%) Relational Database
11 3 (2.36%) Amazon RDS
11 3 (2.36%) Apache Cassandra
11 3 (2.36%) PostgreSQL
11 3 (2.36%) SQL Server 2005
12 2 (1.57%) MySQL
13 1 (0.79%) Oracle Database 10g
Development Applications
1 6 (4.72%) Jenkins
1 6 (4.72%) Team Foundation Server
2 2 (1.57%) Subversion
2 2 (1.57%) Visual Studio Team System
3 1 (0.79%) Atlassian Bamboo
3 1 (0.79%) Cucumber
3 1 (0.79%) Git (software)
3 1 (0.79%) JIRA
3 1 (0.79%) JMeter
3 1 (0.79%) Selenium
General
1 51 (40.16%) Finance
2 13 (10.24%) Games
3 8 (6.30%) Marketing
4 6 (4.72%) Banking
5 5 (3.94%) Retail
6 4 (3.15%) Telecoms
7 3 (2.36%) Electronics
7 3 (2.36%) Law
7 3 (2.36%) Manufacturing
8 2 (1.57%) Back Office
8 2 (1.57%) Front Office
9 1 (0.79%) Advertising
9 1 (0.79%) Legal
Job Titles
1 25 (19.69%) DBA
1 25 (19.69%) SQL DBA
2 22 (17.32%) SQL Server DBA
3 17 (13.39%) Support Engineer
4 14 (11.02%) Architect
4 14 (11.02%) Solutions Architect
5 11 (8.66%) Administrator
5 11 (8.66%) Analyst
6 10 (7.87%) Windows Engineer
7 8 (6.30%) Developer
7 8 (6.30%) Infrastructure Analyst
8 7 (5.51%) Senior Windows Engineer
9 6 (4.72%) Linux Engineer
10 5 (3.94%) Infrastructure Architect
10 5 (3.94%) Infrastructure Solutions Architect
10 5 (3.94%) Network Infrastructure Architect
10 5 (3.94%) Production DBA
10 5 (3.94%) SQL Server Production DBA
11 4 (3.15%) Infrastructure Engineer
11 4 (3.15%) Unix Engineer
Libraries, Frameworks & Software Standards
1 12 (9.45%) Oracle GoldenGate
2 10 (7.87%) 802.1X
3 4 (3.15%) jQuery
4 3 (2.36%) Apache Camel
4 3 (2.36%) Hibernate
4 3 (2.36%) OSGi
4 3 (2.36%) Spring
5 2 (1.57%) .NET
5 2 (1.57%) .NET Framework
5 2 (1.57%) Ajax
5 2 (1.57%) ASP.NET
5 2 (1.57%) CSS
5 2 (1.57%) Entity Framework
5 2 (1.57%) GWT
5 2 (1.57%) HTML
5 2 (1.57%) J2EE
5 2 (1.57%) JSF
5 2 (1.57%) JSON
5 2 (1.57%) REST
5 2 (1.57%) WCF
Miscellaneous
1 26 (20.47%) Replication
2 15 (11.81%) Data Centre
3 8 (6.30%) PKI
4 7 (5.51%) HP StoreVirtual
5 6 (4.72%) Analytical Skills
5 6 (4.72%) Fintech
6 3 (2.36%) Enterprise Software
6 3 (2.36%) Fixed Income
6 3 (2.36%) Reinsurance
6 3 (2.36%) Virtual Team
7 2 (1.57%) Computer Science
7 2 (1.57%) Foreign Exchange (FX)
7 2 (1.57%) Management Information System
8 1 (0.79%) Blackberry
8 1 (0.79%) Client/Server
8 1 (0.79%) Cybercrime
8 1 (0.79%) Enterprise Storage
8 1 (0.79%) Field-Programmable Gate Array
Operating Systems
1 73 (57.48%) Windows
2 35 (27.56%) Linux
3 32 (25.20%) Windows Server
4 30 (23.62%) Windows Server 2012
5 25 (19.69%) Windows Server 2008
6 15 (11.81%) Unix
7 12 (9.45%) Red Hat Enterprise Linux
7 12 (9.45%) Solaris
8 3 (2.36%) AIX
8 3 (2.36%) SUSE
8 3 (2.36%) Windows Server 2003
9 2 (1.57%) HPUX
9 2 (1.57%) SmartOS
10 1 (0.79%) Apple iOS
10 1 (0.79%) SUSE Linux Enterprise Server
10 1 (0.79%) Ubuntu
10 1 (0.79%) Windows 10
10 1 (0.79%) Windows 2000 Server
10 1 (0.79%) Windows 7
10 1 (0.79%) Windows 8
Processes & Methodologies
1 48 (37.80%) ITIL
2 38 (29.92%) Disaster Recovery
3 35 (27.56%) High Availability
4 17 (13.39%) Performance Tuning
5 15 (11.81%) Performance Monitoring
6 13 (10.24%) Virtual Infrastructure
7 12 (9.45%) Performance Analysis
8 11 (8.66%) Load Balancing
8 11 (8.66%) Migration
8 11 (8.66%) SDLC
8 11 (8.66%) Security Patching
8 11 (8.66%) User Acceptance Testing
9 10 (7.87%) Agile Software Development
9 10 (7.87%) Service Management
10 9 (7.09%) Analytics
10 9 (7.09%) Configuration Management
11 8 (6.30%) Business Intelligence
11 8 (6.30%) Capacity Management
11 8 (6.30%) Release Management
12 7 (5.51%) Network Design
Programming Languages
1 52 (40.94%) SQL
2 23 (18.11%) PowerShell
3 19 (14.96%) JavaScript
4 15 (11.81%) VB
5 14 (11.02%) VBScript
6 9 (7.09%) Python
7 8 (6.30%) Java
8 7 (5.51%) Perl
8 7 (5.51%) T-SQL
9 5 (3.94%) Bash Shell
9 5 (3.94%) Ruby
10 4 (3.15%) Shell Script
11 3 (2.36%) PHP
12 2 (1.57%) C
12 2 (1.57%) C#
Qualifications
1 17 (13.39%) Degree
2 8 (6.30%) Microsoft Certification
3 6 (4.72%) MCSE
4 5 (3.94%) MCSA
5 3 (2.36%) CCNP
5 3 (2.36%) Cisco Certification
6 2 (1.57%) Computer Science Degree
6 2 (1.57%) ITIL Certification
6 2 (1.57%) MCITP
6 2 (1.57%) SC Cleared
6 2 (1.57%) Security Cleared
6 2 (1.57%) VMware Certified Professional (VCP)
7 1 (0.79%) MCP
7 1 (0.79%) RHCA
7 1 (0.79%) RHCE
Quality Assurance & Compliance
1 12 (9.45%) QA
System Software
1 37 (29.13%) Active Directory
2 30 (23.62%) VMware Infrastructure
3 17 (13.39%) Hyper-V
4 15 (11.81%) XenApp
5 8 (6.30%) vSphere
5 8 (6.30%) XenDesktop
6 4 (3.15%) XenServer
7 3 (2.36%) Veritas Cluster Server
7 3 (2.36%) VMware ESXi
8 2 (1.57%) Docker
8 2 (1.57%) NFS
8 2 (1.57%) Virtual Machines
Systems Management
1 17 (13.39%) Microsoft Clustering
2 15 (11.81%) SCOM
3 12 (9.45%) SCCM
4 9 (7.09%) WSUS
5 8 (6.30%) Puppet
6 5 (3.94%) Failover Clustering
7 4 (3.15%) Oracle ZFS
8 3 (2.36%) Ansible
8 3 (2.36%) Nagios
8 3 (2.36%) vCenter Server
9 2 (1.57%) EMC NetWorker
9 2 (1.57%) Ganglia
9 2 (1.57%) Opscode Chef
9 2 (1.57%) ZABBIX
10 1 (0.79%) Control-M
10 1 (0.79%) NetBackup
10 1 (0.79%) OpenView
10 1 (0.79%) Terraform
Vendors
1 56 (44.09%) Microsoft
2 49 (38.58%) VMware
3 25 (19.69%) Oracle
4 20 (15.75%) Citrix
5 19 (14.96%) Cisco
6 12 (9.45%) HP
7 11 (8.66%) Siebel
8 9 (7.09%) NetApp
8 9 (7.09%) Sybase
9 8 (6.30%) Dell
9 8 (6.30%) Red Hat
10 7 (5.51%) 3PAR
10 7 (5.51%) F5
10 7 (5.51%) SolarWinds
11 5 (3.94%) Veritas
12 4 (3.15%) Nexenta
12 4 (3.15%) Splunk
12 4 (3.15%) Sun
13 3 (2.36%) Palo Alto
13 3 (2.36%) ScanSafe
City, London
TEKsystems
Salary: £55000 - £80000 per annum + Bonus + Benefits
Posted: 10 hours ago
City, London
Big Wednesday Digital Ltd
Salary: £45000 - £85000 per annum + Negotiable
Posted: 14 hours ago
City, London
Epiq Systems Ltd
Salary: Unspecified
Posted: 19 days ago
City of London
People Source Consulting
Salary: £45000 - £50000 per annum + benefits
Posted: 17 days ago
City, London
Quidco
Salary: From £40,000 to £55,000 per annum plus performance related bonus
Posted: 15 days ago