Period
to 23 February 2018

The table below looks at the prevalence of the term Clustering in permanent job vacancies advertised in London. Included is a benchmarking guide to the salaries offered in vacancies that have cited Clustering over the 6 months to 23 February 2018 with a comparison to the same period over the previous 2 years.

Clustering
England > London
6 months to
23 Feb 2018
Same period 2017 Same period 2016
Rank 450 408 323
Rank change year-on-year -42 -85 -47
Permanent jobs citing Clustering 427 512 899
As % of all permanent IT jobs advertised in London 0.61% 0.73% 1.04%
As % of the Miscellaneous category 1.29% 1.60% 2.18%
Number of salaries quoted 373 472 812
London median annual salary £62,500 £55,000 £55,000
Median salary % change year-on-year +13.64% - -4.35%
10th Percentile £45,000 £36,250 £37,500
90th Percentile £90,000 £80,000 £78,750
England median annual salary £50,000 £50,000 £50,000

Clustering is in the Generic IT Skills category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for generic IT skills.

All Generic IT Skills
London
Permanent vacancies with a requirement for generic IT skills 33,203 32,011 41,177
As % of all permanent IT jobs advertised in London 47.39% 45.85% 47.84%
Number of salaries quoted 26,346 26,822 34,046
London median annual salary £60,000 £58,500 £55,450
Median salary % change year-on-year +2.56% +5.50% +0.82%
10th Percentile £35,000 £32,500 £32,500
90th Percentile £95,000 £91,250 £87,500
England median annual salary £50,000 £50,000 £50,000

Clustering
Job Vacancy Trend in London

Job postings citing Clustering as a percentage of all IT jobs advertised in London.

Job vacancy trend for Clustering in London

Clustering
Salary Trend in London

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

Salary trend for Clustering in London

Clustering
Salary Histogram in London

The salary distribution of IT jobs citing Clustering in London over the 6 months to 23 February 2018.

Salary histogram for Clustering in London

Clustering
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Clustering within the London region over the 6 months to 23 February 2018. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London -50 100 £53,730 -10.45% 11
East London +11 16 £60,000 - 3
West London +18 13 £47,500 +26.67% 6
South London -19 1 - - 5
Clustering
England

For the 6 months to 23 February 2018, IT jobs citing Clustering 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 London region with a requirement for Clustering.

1 215 (50.35%) Windows
2 200 (46.84%) SQL Server
3 194 (45.43%) SQL
3 194 (45.43%) Finance
4 146 (34.19%) Windows Server
5 140 (32.79%) Active Directory
6 139 (32.55%) Microsoft
7 127 (29.74%) VMware
8 111 (26.00%) Banking
9 108 (25.29%) DevOps
10 101 (23.65%) Cisco
11 100 (23.42%) PowerShell
12 95 (22.25%) Agile Software Development
13 85 (19.91%) SQL Server Integration Services
13 85 (19.91%) Performance Tuning
14 84 (19.67%) SAN
15 83 (19.44%) VMware Infrastructure
16 77 (18.03%) Linux
17 76 (17.80%) .NET
17 76 (17.80%) Continuous Integration
17 76 (17.80%) Data Centre
18 74 (17.33%) High Availability
19 73 (17.10%) ITIL
20 70 (16.39%) IIS
20 70 (16.39%) Windows Server 2012
21 68 (15.93%) Microsoft Azure
22 67 (15.69%) SQL Server Reporting Services
23 65 (15.22%) Firewall
24 63 (14.75%) Configuration Management
24 63 (14.75%) Migration

Clustering
Co-occurring IT Skills in 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 70 (16.39%) IIS
2 50 (11.71%) MS Exchange
3 48 (11.24%) CMS
4 29 (6.79%) Exchange Server 2010
5 26 (6.09%) Skype for Business
6 23 (5.39%) Apache Spark
7 16 (3.75%) SharePoint
8 13 (3.04%) SAS
9 10 (2.34%) Exchange Server 2013
10 8 (1.87%) Exchange Server 2007
11 5 (1.17%) Confluence
11 5 (1.17%) WebSphere
12 4 (0.94%) Apache Solr
12 4 (0.94%) Elasticsearch
12 4 (0.94%) Kentico
13 3 (0.70%) Apache
14 2 (0.47%) Exchange Server 2003
14 2 (0.47%) nginx
14 2 (0.47%) Tomcat
14 2 (0.47%) WebLogic
Applications
1 4 (0.94%) Microsoft Office
2 1 (0.23%) MS Visio
Business Applications
1 9 (2.11%) HFM
2 2 (0.47%) Distributed Ledger
3 1 (0.23%) Dynamics CRM
3 1 (0.23%) Oracle EBS
3 1 (0.23%) SAP Business One
Cloud Services
1 68 (15.93%) Microsoft Azure
2 40 (9.37%) Amazon AWS
3 30 (7.03%) Office 365
4 29 (6.79%) IaaS
5 15 (3.51%) Azure Active Directory
6 8 (1.87%) PaaS
7 5 (1.17%) Amazon EMR
7 5 (1.17%) Amazon S3
7 5 (1.17%) AWS Lambda
7 5 (1.17%) Cloud Computing
7 5 (1.17%) npm
7 5 (1.17%) Oracle CX
7 5 (1.17%) Serverless
8 2 (0.47%) Amazon EC2
8 2 (0.47%) SaaS
8 2 (0.47%) Virtual Private Cloud
9 1 (0.23%) Google Cloud Platform
Communications & Networking
1 84 (19.67%) SAN
2 65 (15.22%) Firewall
3 53 (12.41%) DNS
4 50 (11.71%) Unified Communications
5 47 (11.01%) Wireless
6 45 (10.54%) MPLS
6 45 (10.54%) VoIP
7 44 (10.30%) BGP
7 44 (10.30%) Cisco IOS
7 44 (10.30%) Cisco Nexus
7 44 (10.30%) EIGRP
7 44 (10.30%) IPsec
7 44 (10.30%) OSPF
8 40 (9.37%) WAN
9 37 (8.67%) DHCP
10 34 (7.96%) Network Security
11 28 (6.56%) Telepresence
11 28 (6.56%) VPN
12 26 (6.09%) iSCSI
13 21 (4.92%) Skype
Database & Business Intelligence
1 200 (46.84%) SQL Server
2 85 (19.91%) SQL Server Integration Services
3 67 (15.69%) SQL Server Reporting Services
4 55 (12.88%) MongoDB
5 54 (12.65%) SQL Server 2008
6 45 (10.54%) SQL Server 2016
7 44 (10.30%) SQL Server 2012
8 40 (9.37%) NoSQL
9 35 (8.20%) Big Data
9 35 (8.20%) Data Warehouse
10 31 (7.26%) SQL Server Analysis Services
11 30 (7.03%) Oracle Database
12 28 (6.56%) Apache Cassandra
13 27 (6.32%) Hadoop
14 26 (6.09%) MySQL
15 22 (5.15%) SQL Server 2014
16 17 (3.98%) RavenDB
16 17 (3.98%) SSDT
17 16 (3.75%) PostgreSQL
18 14 (3.28%) QlikView
Development Applications
1 55 (12.88%) Octopus Deploy
1 55 (12.88%) TeamCity
2 35 (8.20%) Git (software)
2 35 (8.20%) MSBuild
3 20 (4.68%) Team Foundation Server
4 17 (3.98%) Atlassian Bamboo
4 17 (3.98%) JIRA
4 17 (3.98%) Travis CI
5 15 (3.51%) Visual Studio
6 12 (2.81%) Bower
6 12 (2.81%) Grunt
6 12 (2.81%) gulp
6 12 (2.81%) Jenkins
7 8 (1.87%) IntelliJ
7 8 (1.87%) JUnit
8 5 (1.17%) Maven
8 5 (1.17%) Selenium
8 5 (1.17%) webpack
9 4 (0.94%) GitLab
10 3 (0.70%) Mocha
General
1 194 (45.43%) Finance
2 111 (26.00%) Banking
3 20 (4.68%) Advertising
4 18 (4.22%) Retail
5 17 (3.98%) Marketing
6 7 (1.64%) Automotive
6 7 (1.64%) Electronics
6 7 (1.64%) Manufacturing
6 7 (1.64%) Telecoms
7 5 (1.17%) Back Office
8 4 (0.94%) Investment Banking
9 3 (0.70%) Publishing
10 2 (0.47%) Digital Economy
10 2 (0.47%) Financial Institution
10 2 (0.47%) Front Office
10 2 (0.47%) Games
10 2 (0.47%) Law
11 1 (0.23%) French Language
11 1 (0.23%) German Language
11 1 (0.23%) Legal
Job Titles
1 108 (25.29%) DBA
2 86 (20.14%) SQL DBA
3 78 (18.27%) Administrator
4 41 (9.60%) Architect
5 33 (7.73%) DevOps Engineer
5 33 (7.73%) SQL Server DBA
6 27 (6.32%) Analyst
6 27 (6.32%) Infrastructure Engineer
6 27 (6.32%) Team Leader
7 24 (5.62%) Network Operations Team Leader
7 24 (5.62%) Network Team Leader
7 24 (5.62%) Operations Team Leader
8 20 (4.68%) Senior DBA
9 19 (4.45%) VMware Engineer
10 18 (4.22%) Systems Engineer
11 17 (3.98%) Cisco Engineer
12 16 (3.75%) 3rd Line Engineer
13 14 (3.28%) Software Engineer
14 13 (3.04%) Developer
14 13 (3.04%) Support Analyst
Libraries, Frameworks & Software Standards
1 76 (17.80%) .NET
2 44 (10.30%) XMPP
3 22 (5.15%) Natural Language Processing
4 20 (4.68%) Web Services
5 14 (3.28%) ASP.NET
5 14 (3.28%) Middleware
6 12 (2.81%) ActiveMQ
6 12 (2.81%) Elastic Stack
7 10 (2.34%) Kafka
7 10 (2.34%) REST
8 9 (2.11%) Spring
9 8 (1.87%) JSON
9 8 (1.87%) SOAP
10 7 (1.64%) HTML
10 7 (1.64%) HTML5
10 7 (1.64%) XML
11 5 (1.17%) CSS3
11 5 (1.17%) Node.js
11 5 (1.17%) React
11 5 (1.17%) Sass
Miscellaneous
1 76 (17.80%) Data Centre
2 57 (13.35%) Replication
3 37 (8.67%) Analytical Skills
4 25 (5.85%) Computer Science
4 25 (5.85%) Management Information System
5 24 (5.62%) Algorithms
6 22 (5.15%) Fintech
7 17 (3.98%) EMC VMAX
8 13 (3.04%) EMC VNX
9 10 (2.34%) Private Cloud
10 9 (2.11%) N-Tier
11 8 (1.87%) Client/Server
11 8 (1.87%) Enterprise Software
12 6 (1.41%) Greenfield Project
13 5 (1.17%) CLARiiON
13 5 (1.17%) Mainframe
14 4 (0.94%) PKI
15 3 (0.70%) Public Cloud
15 3 (0.70%) VxBlock/Vblock
16 2 (0.47%) Celerra
Operating Systems
1 215 (50.35%) Windows
2 146 (34.19%) Windows Server
3 77 (18.03%) Linux
4 70 (16.39%) Windows Server 2012
5 58 (13.58%) Windows Server 2008
6 29 (6.79%) Red Hat Enterprise Linux
7 17 (3.98%) Unix
8 12 (2.81%) Windows Server 2003
9 9 (2.11%) Solaris
10 5 (1.17%) CentOS
11 4 (0.94%) Debian
11 4 (0.94%) SUSE
11 4 (0.94%) Windows 7
12 3 (0.70%) Ubuntu
12 3 (0.70%) VMS
13 2 (0.47%) Data ONTAP
13 2 (0.47%) Mac OS X
14 1 (0.23%) Fedora
14 1 (0.23%) Windows 10
14 1 (0.23%) zOS
Processes & Methodologies
1 108 (25.29%) DevOps
2 95 (22.25%) Agile Software Development
3 85 (19.91%) Performance Tuning
4 76 (17.80%) Continuous Integration
5 74 (17.33%) High Availability
6 73 (17.10%) ITIL
7 63 (14.75%) Configuration Management
7 63 (14.75%) Migration
8 61 (14.29%) Mentoring
9 58 (13.58%) Scrum
10 44 (10.30%) Disaster Recovery
11 38 (8.90%) Line Management
12 36 (8.43%) Load Balancing
13 34 (7.96%) Business Intelligence
14 31 (7.26%) Change Management
15 28 (6.56%) Low Latency
16 27 (6.32%) Problem Management
16 27 (6.32%) Service Delivery
17 26 (6.09%) E-Commerce
17 26 (6.09%) Process Improvement
Programming Languages
1 194 (45.43%) SQL
2 100 (23.42%) PowerShell
3 49 (11.48%) Java
4 42 (9.84%) Python
5 38 (8.90%) T-SQL
6 18 (4.22%) JavaScript
7 14 (3.28%) Shell Script
7 14 (3.28%) VBScript
8 13 (3.04%) Scala
9 11 (2.58%) C
9 11 (2.58%) C#
9 11 (2.58%) VB
10 7 (1.64%) PL/SQL
10 7 (1.64%) R
11 6 (1.41%) Bash Shell
12 3 (0.70%) COBOL
12 3 (0.70%) Perl
13 2 (0.47%) ALGOL
13 2 (0.47%) AWK
13 2 (0.47%) C++
Qualifications
1 55 (12.88%) Cisco Certification
2 44 (10.30%) CCIE
2 44 (10.30%) CCNP
2 44 (10.30%) CCVP
3 35 (8.20%) Microsoft Certification
4 30 (7.03%) Degree
5 19 (4.45%) MCSE
6 17 (3.98%) VMware Certified Professional (VCP)
7 16 (3.75%) CCNP Voice
8 14 (3.28%) CCDE
9 11 (2.58%) CCNA
9 11 (2.58%) Computer Science Degree
10 6 (1.41%) MCP
10 6 (1.41%) PhD
11 5 (1.17%) MCITP
12 4 (0.94%) Master's Degree
12 4 (0.94%) MCDBA
13 3 (0.70%) CCA
13 3 (0.70%) Citrix Certification
14 2 (0.47%) VERITAS Certified Professional (VCP)
Quality Assurance & Compliance
1 18 (4.22%) SLA
2 5 (1.17%) GDPR
3 3 (0.70%) PSD2
4 2 (0.47%) PCI DSS
4 2 (0.47%) PMO
4 2 (0.47%) Sarbanes-Oxley
5 1 (0.23%) Data Quality
5 1 (0.23%) QA
System Software
1 140 (32.79%) Active Directory
2 83 (19.44%) VMware Infrastructure
3 37 (8.67%) VMware ESXi
4 35 (8.20%) Hyper-V
5 25 (5.85%) Docker
6 22 (5.15%) XenApp
7 19 (4.45%) vSphere
8 15 (3.51%) XenDesktop
9 12 (2.81%) Virtual Machines
10 11 (2.58%) Veritas Cluster Server
11 9 (2.11%) HDFS
12 8 (1.87%) Apache ZooKeeper
12 8 (1.87%) Terminal Services
13 7 (1.64%) NFS
14 4 (0.94%) KVM
14 4 (0.94%) Microsoft Virtual Server
14 4 (0.94%) SRDF
14 4 (0.94%) Virtual Servers
15 3 (0.70%) Oracle RAC
16 2 (0.47%) Citrix Presentation Server
Systems Management
1 56 (13.11%) Cisco CUCM
2 48 (11.24%) SCCM
3 45 (10.54%) Puppet
4 44 (10.30%) Cisco UCCE
4 44 (10.30%) Cisco UCCX
5 42 (9.84%) Microsoft Clustering
6 34 (7.96%) SCOM
7 30 (7.03%) Opscode Chef
8 29 (6.79%) Ansible
9 20 (4.68%) SCOrch
9 20 (4.68%) Simpana
10 19 (4.45%) Failover Clustering
11 18 (4.22%) Kubernetes
12 17 (3.98%) CFEngine
13 15 (3.51%) vCenter Server
14 13 (3.04%) Docker Swarm
15 7 (1.64%) WSUS
16 6 (1.41%) Backup Exec
16 6 (1.41%) SCVMM
17 5 (1.17%) Data Guard
Vendors
1 139 (32.55%) Microsoft
2 127 (29.74%) VMware
3 101 (23.65%) Cisco
4 51 (11.94%) Oracle
5 43 (10.07%) Citrix
6 42 (9.84%) HP
7 38 (8.90%) Red Hat
8 37 (8.67%) RedGate
9 31 (7.26%) CommVault
10 30 (7.03%) Palo Alto
11 28 (6.56%) Riverbed
12 27 (6.32%) IBM
13 26 (6.09%) EMC
14 22 (5.15%) New Relic
15 21 (4.92%) SAP
16 18 (4.22%) Siebel
17 16 (3.75%) NICE Systems
17 16 (3.75%) Sybase
18 14 (3.28%) Dell
19 13 (3.04%) Symantec