Period
to 22 January 2019

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 22 January 2019 with a comparison to the same period over the previous 2 years.

Clustering
England > London
6 months to
22 Jan 2019
Same period 2018 Same period 2017
Rank 426 422 384
Rank change year-on-year -4 -38 -52
Permanent jobs citing Clustering 393 480 535
As % of all permanent IT jobs advertised in London 0.62% 0.69% 0.77%
As % of the Miscellaneous category 1.36% 1.48% 1.73%
Number of salaries quoted 349 417 480
London median annual salary £60,000 £60,000 £55,000
Median salary % change year-on-year - +9.09% -
10th Percentile £42,500 £44,500 £36,250
90th Percentile £90,000 £90,000 £75,000
England median annual salary £50,500 £50,000 £50,000
% change year-on-year +1.00% - -

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 28,884 32,520 30,980
As % of all permanent IT jobs advertised in London 45.76% 46.53% 44.38%
Number of salaries quoted 22,819 24,996 26,131
London median annual salary £65,000 £60,000 £58,636
Median salary % change year-on-year +8.33% +2.33% +4.71%
10th Percentile £36,250 £35,000 £32,500
90th Percentile £98,750 £93,750 £92,500
England median annual salary £55,000 £50,000 £50,000
% change year-on-year +10.00% - -

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 22 January 2019.

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 22 January 2019. 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 -13 86 £57,500 +7.02% 20
South London +15 25 £55,000 +48.65% 5
East London +11 14 £50,000 -16.67% 4
West London -2 8 £55,000 +15.79% 6
Clustering
England

For the 6 months to 22 January 2019, 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.

1 192 (48.85%) Windows
2 180 (45.80%) SQL Server
3 178 (45.29%) SQL
4 166 (42.24%) Microsoft
5 141 (35.88%) Active Directory
6 128 (32.57%) Microsoft Azure
7 122 (31.04%) High Availability
8 121 (30.79%) Windows Server
9 120 (30.53%) VMware
10 113 (28.75%) Finance
11 108 (27.48%) Linux
12 94 (23.92%) PowerShell
13 91 (23.16%) VMware Infrastructure
14 81 (20.61%) Firewall
15 80 (20.36%) ITIL
16 79 (20.10%) DNS
17 77 (19.59%) Amazon AWS
18 72 (18.32%) Replication
18 72 (18.32%) Infrastructure Engineering
19 71 (18.07%) SAN
20 70 (17.81%) Python
21 69 (17.56%) Windows Server 2008
22 67 (17.05%) Failover Clustering
22 67 (17.05%) Microsoft Clustering
23 66 (16.79%) T-SQL
24 64 (16.28%) Cisco
25 63 (16.03%) DevOps
26 59 (15.01%) Disaster Recovery
27 56 (14.25%) Oracle
27 56 (14.25%) SQL Server Integration Services

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 47 (11.96%) IIS
2 32 (8.14%) SharePoint
3 30 (7.63%) MS Exchange
4 16 (4.07%) Tomcat
5 14 (3.56%) Exchange Server 2010
6 13 (3.31%) CMS
6 13 (3.31%) Elasticsearch
6 13 (3.31%) Skype for Business
7 12 (3.05%) Apache
8 10 (2.54%) BizTalk Server
9 9 (2.29%) Confluence
9 9 (2.29%) Exchange Server 2013
10 6 (1.53%) nginx
11 5 (1.27%) Apache Spark
11 5 (1.27%) Exchange Server 2007
11 5 (1.27%) SharePoint 2013
12 4 (1.02%) OpenStack
13 3 (0.76%) Office Communications Server
13 3 (0.76%) Oracle Application Server
13 3 (0.76%) SAS
Applications
1 13 (3.31%) Microsoft Office
2 4 (1.02%) MS Visio
3 1 (0.25%) InfoPath
3 1 (0.25%) Microsoft Excel
Business Applications
1 1 (0.25%) Dynamics CRM
1 1 (0.25%) Siebel Analytics
Cloud Services
1 128 (32.57%) Microsoft Azure
2 77 (19.59%) Amazon AWS
3 44 (11.20%) Office 365
4 27 (6.87%) Google Cloud Platform
5 22 (5.60%) Azure Active Directory
6 20 (5.09%) IaaS
7 17 (4.33%) SaaS
8 14 (3.56%) AWS CloudFormation
9 12 (3.05%) Amazon EC2
9 12 (3.05%) Amazon ELB
10 8 (2.04%) Amazon EMR
10 8 (2.04%) Amazon S3
11 7 (1.78%) Amazon Kinesis
11 7 (1.78%) Cloud Computing
11 7 (1.78%) Cloudflare
12 6 (1.53%) GitHub
12 6 (1.53%) Mimecast
13 4 (1.02%) OneDrive
13 4 (1.02%) PaaS
13 4 (1.02%) Route 53
Communications & Networking
1 81 (20.61%) Firewall
2 79 (20.10%) DNS
3 71 (18.07%) SAN
4 52 (13.23%) DHCP
5 38 (9.67%) WAN
6 37 (9.41%) TCP/IP
7 28 (7.12%) iSCSI
7 28 (7.12%) VLAN
8 27 (6.87%) VPN
9 26 (6.62%) Internet
10 21 (5.34%) LAN
10 21 (5.34%) Wireless
11 20 (5.09%) MPLS
11 20 (5.09%) VoIP
12 19 (4.83%) IPsec
13 16 (4.07%) Cisco IOS
13 16 (4.07%) Network Security
14 14 (3.56%) Cisco ASA
14 14 (3.56%) NAS
14 14 (3.56%) Unified Communications
Database & Business Intelligence
1 180 (45.80%) SQL Server
2 56 (14.25%) SQL Server Integration Services
3 50 (12.72%) SQL Server Reporting Services
4 46 (11.70%) MySQL
5 44 (11.20%) SQL Server 2008
6 41 (10.43%) SQL Server Analysis Services
7 38 (9.67%) NoSQL
8 36 (9.16%) SQL Server 2012
9 35 (8.91%) MongoDB
9 35 (8.91%) Relational Database
9 35 (8.91%) SQL Server 2016
10 33 (8.40%) Amazon RDS
10 33 (8.40%) SQL Server 2014
11 30 (7.63%) PostgreSQL
12 24 (6.11%) Big Data
12 24 (6.11%) Oracle Database
13 22 (5.60%) Data Warehouse
14 18 (4.58%) Hadoop
15 16 (4.07%) SQL Server 2005
16 15 (3.82%) RDBMS
Development Applications
1 21 (5.34%) Jenkins
2 19 (4.83%) TeamCity
3 18 (4.58%) Git (software)
4 14 (3.56%) Octopus Deploy
5 12 (3.05%) Visual Studio
6 10 (2.54%) Team Foundation Server
7 9 (2.29%) JIRA
7 9 (2.29%) Subversion
8 6 (1.53%) Maven
9 5 (1.27%) Atlassian Bamboo
9 5 (1.27%) Eclipse
9 5 (1.27%) Visual Studio Team System
10 3 (0.76%) git-flow
10 3 (0.76%) Travis CI
11 2 (0.51%) Cucumber
11 2 (0.51%) JMeter
11 2 (0.51%) Mercurial
11 2 (0.51%) Xdebug
12 1 (0.25%) Hudson
12 1 (0.25%) Sonatype Nexus
General
1 113 (28.75%) Finance
2 42 (10.69%) Banking
3 18 (4.58%) Retail
4 10 (2.54%) Advertising
5 7 (1.78%) Marketing
6 6 (1.53%) Legal
7 5 (1.27%) Telecoms
8 4 (1.02%) Law
9 3 (0.76%) Financial Institution
9 3 (0.76%) Publishing
10 2 (0.51%) Back Office
11 1 (0.25%) Automotive
11 1 (0.25%) Games
11 1 (0.25%) German Language
11 1 (0.25%) Spanish Language
Job Titles
1 130 (33.08%) DBA
2 107 (27.23%) SQL DBA
3 76 (19.34%) Administrator
4 56 (14.25%) Infrastructure Engineer
5 53 (13.49%) SQL Server DBA
6 26 (6.62%) Microsoft Engineer
7 24 (6.11%) Architect
7 24 (6.11%) Microsoft Infrastructure Engineer
8 23 (5.85%) Azure Engineer
8 23 (5.85%) Azure Infrastructure Engineer
9 21 (5.34%) DevOps Engineer
10 20 (5.09%) Developer
10 20 (5.09%) Senior DBA
11 18 (4.58%) 3rd Line Engineer
11 18 (4.58%) Support Engineer
12 17 (4.33%) Linux Engineer
12 17 (4.33%) Senior SQL DBA
13 16 (4.07%) Analyst
13 16 (4.07%) Systems Administrator
13 16 (4.07%) Systems Engineer
Libraries, Frameworks & Software Standards
1 21 (5.34%) RabbitMQ
2 18 (4.58%) .NET
2 18 (4.58%) Web Services
3 13 (3.31%) XMPP
4 9 (2.29%) ASP.NET
4 9 (2.29%) Memcached
5 8 (2.04%) ActiveMQ
5 8 (2.04%) Kafka
5 8 (2.04%) LDAP
5 8 (2.04%) TensorFlow
6 7 (1.78%) HTML
6 7 (1.78%) JSON
7 6 (1.53%) 802.1X
7 6 (1.53%) Ajax
7 6 (1.53%) Flash
7 6 (1.53%) LEMP Stack
7 6 (1.53%) RESTful
8 5 (1.27%) Akka
8 5 (1.27%) WSH
8 5 (1.27%) XGBoost
Miscellaneous
1 72 (18.32%) Replication
2 56 (14.25%) Data Centre
3 18 (4.58%) Self-Motivation
4 16 (4.07%) EMC VNX
5 13 (3.31%) Analytical Skills
6 12 (3.05%) Management Information System
7 10 (2.54%) Hedge funds
8 9 (2.29%) Fintech
8 9 (2.29%) Private Cloud
9 8 (2.04%) Linux Command Line
9 8 (2.04%) PKI
10 7 (1.78%) Public Cloud
11 6 (1.53%) HP Storage
12 5 (1.27%) Greenfield Project
13 4 (1.02%) EMC VMAX
13 4 (1.02%) Enterprise Software
14 3 (0.76%) Algorithms
14 3 (0.76%) Fat Client
14 3 (0.76%) Internet of Things
14 3 (0.76%) Thin Client
Operating Systems
1 192 (48.85%) Windows
2 121 (30.79%) Windows Server
3 108 (27.48%) Linux
4 69 (17.56%) Windows Server 2008
5 51 (12.98%) Windows Server 2012
6 42 (10.69%) Red Hat Enterprise Linux
7 17 (4.33%) Windows 10
8 16 (4.07%) Unix
9 13 (3.31%) CentOS
9 13 (3.31%) Windows 7
10 10 (2.54%) Ubuntu
10 10 (2.54%) Windows 8
11 9 (2.29%) Windows Server 2003
12 8 (2.04%) FreeBSD
13 6 (1.53%) Oracle Linux
14 5 (1.27%) Solaris
15 4 (1.02%) AIX
16 2 (0.51%) Debian
Processes & Methodologies
1 122 (31.04%) High Availability
2 80 (20.36%) ITIL
3 72 (18.32%) Infrastructure Engineering
4 63 (16.03%) DevOps
5 59 (15.01%) Disaster Recovery
6 55 (13.99%) Performance Tuning
7 51 (12.98%) Agile Software Development
7 51 (12.98%) Load Balancing
8 41 (10.43%) Migration
9 40 (10.18%) Capacity Planning
10 32 (8.14%) Problem-Solving
11 29 (7.38%) Database Security
11 29 (7.38%) Performance Monitoring
12 28 (7.12%) Configuration Management
13 27 (6.87%) Business Intelligence
13 27 (6.87%) Continuous Integration
14 25 (6.36%) Performance Optimisation
14 25 (6.36%) Service Management
15 24 (6.11%) Change Control
15 24 (6.11%) Problem Management
Programming Languages
1 178 (45.29%) SQL
2 94 (23.92%) PowerShell
3 70 (17.81%) Python
4 66 (16.79%) T-SQL
5 33 (8.40%) Java
6 30 (7.63%) Bash Shell
6 30 (7.63%) JavaScript
7 26 (6.62%) C#
8 23 (5.85%) Ruby
9 18 (4.58%) Perl
10 16 (4.07%) Go
11 11 (2.80%) VBScript
12 7 (1.78%) PHP
13 6 (1.53%) Bourne shell
13 6 (1.53%) C
13 6 (1.53%) Korn
13 6 (1.53%) PL/SQL
14 5 (1.27%) Scala
14 5 (1.27%) Shell Script
15 3 (0.76%) VB
Qualifications
1 39 (9.92%) Microsoft Certification
2 28 (7.12%) Degree
3 25 (6.36%) Cisco Certification
4 24 (6.11%) MCSA
5 23 (5.85%) MCSE
6 19 (4.83%) CCNP
7 18 (4.58%) VMware Certified Professional (VCP)
8 14 (3.56%) ITIL Certification
9 13 (3.31%) CCIE
9 13 (3.31%) CCVP
9 13 (3.31%) Computer Science Degree
10 11 (2.80%) AWS Certification
11 9 (2.29%) MCP
12 8 (2.04%) MCITP
12 8 (2.04%) RHCE
13 7 (1.78%) HND
14 6 (1.53%) VCP5
15 4 (1.02%) RHCSA
15 4 (1.02%) VCP6
16 3 (0.76%) CCNA
Quality Assurance & Compliance
1 11 (2.80%) QA
2 6 (1.53%) GDPR
2 6 (1.53%) SLA
3 5 (1.27%) ISO/IEC 27001
4 3 (0.76%) Data Quality
5 1 (0.25%) Cyber Essentials
5 1 (0.25%) HIPAA
5 1 (0.25%) PSD2
System Software
1 141 (35.88%) Active Directory
2 91 (23.16%) VMware Infrastructure
3 52 (13.23%) Hyper-V
4 38 (9.67%) Docker
5 27 (6.87%) XenApp
6 19 (4.83%) VMware ESXi
7 18 (4.58%) DFS Replication
7 18 (4.58%) vSphere
7 18 (4.58%) XenDesktop
8 16 (4.07%) Microsoft App-V
9 13 (3.31%) Oracle RAC
10 10 (2.54%) NFS
11 6 (1.53%) Firmware
11 6 (1.53%) Oracle Clusterware
11 6 (1.53%) Virtual Machines
12 4 (1.02%) LXC
12 4 (1.02%) Postfix
12 4 (1.02%) Virtual Servers
13 3 (0.76%) Microsoft Virtual Server
14 2 (0.51%) Veritas Cluster Server
Systems Management
1 67 (17.05%) Failover Clustering
1 67 (17.05%) Microsoft Clustering
2 48 (12.21%) SCOM
3 45 (11.45%) Ansible
4 40 (10.18%) SCCM
5 34 (8.65%) Opscode Chef
6 29 (7.38%) Puppet
7 21 (5.34%) Backup Exec
7 21 (5.34%) WSUS
8 19 (4.83%) Terraform
9 15 (3.82%) Nagios
9 15 (3.82%) vCenter Server
10 14 (3.56%) Kubernetes
11 13 (3.31%) Cisco CUCM
11 13 (3.31%) Cisco UCCE
11 13 (3.31%) Cisco UCCX
11 13 (3.31%) IBM BigFix
11 13 (3.31%) Prometheus
12 11 (2.80%) Docker Swarm
13 9 (2.29%) Perfmon
Vendors
1 166 (42.24%) Microsoft
2 120 (30.53%) VMware
3 64 (16.28%) Cisco
4 56 (14.25%) Oracle
5 43 (10.94%) HP
6 42 (10.69%) Red Hat
7 36 (9.16%) Citrix
8 28 (7.12%) Veeam
9 24 (6.11%) IBM
10 21 (5.34%) EMC
10 21 (5.34%) Veritas
11 20 (5.09%) Google
12 17 (4.33%) NetApp
13 15 (3.82%) CommVault
13 15 (3.82%) SolarWinds
14 14 (3.56%) EqualLogic
14 14 (3.56%) RedGate
15 13 (3.31%) Palo Alto
15 13 (3.31%) Riverbed
16 12 (3.05%) Symantec