Period
to 18 October 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 18 October 2018 with a comparison to the same period over the previous 2 years.

Clustering
England > London
6 months to
18 Oct 2018
Same period 2017 Same period 2016
Rank 442 378 395
Rank change year-on-year -64 +17 -58
Permanent jobs citing Clustering 408 596 594
As % of all permanent IT jobs advertised in London 0.60% 0.80% 0.77%
As % of the Miscellaneous category 1.23% 1.59% 1.64%
Number of salaries quoted 362 509 522
London median annual salary £60,000 £60,000 £55,000
Median salary % change year-on-year - +9.09% -4.35%
10th Percentile £42,500 £41,250 £37,500
90th Percentile £86,250 £87,500 £72,500
England median annual salary £52,500 £50,000 £50,000
% change year-on-year +5.00% - -

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 33,082 37,536 36,230
As % of all permanent IT jobs advertised in London 48.76% 50.51% 46.93%
Number of salaries quoted 25,799 26,743 30,820
London median annual salary £63,000 £60,000 £57,500
Median salary % change year-on-year +5.00% +4.35% +4.55%
10th Percentile £35,000 £33,750 £32,500
90th Percentile £97,500 £92,500 £90,000
England median annual salary £52,500 £50,000 £50,000
% change year-on-year +5.00% - +5.26%

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 18 October 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 18 October 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 -67 73 £57,500 -2.54% 15
South London +10 19 £57,500 +27.78% 2
West London +6 16 £55,000 - 7
East London -11 10 £80,000 +14.29% 1
Clustering
England

For the 6 months to 18 October 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.

1 239 (58.58%) SQL Server
2 227 (55.64%) SQL
3 184 (45.10%) Windows
4 159 (38.97%) High Availability
5 149 (36.52%) Active Directory
6 144 (35.29%) Microsoft
7 141 (34.56%) Microsoft Azure
8 121 (29.66%) Linux
9 115 (28.19%) Finance
10 112 (27.45%) VMware
10 112 (27.45%) Windows Server
11 103 (25.25%) Replication
12 94 (23.04%) Disaster Recovery
13 93 (22.79%) ITIL
14 85 (20.83%) PowerShell
15 82 (20.10%) T-SQL
16 78 (19.12%) SAN
17 77 (18.87%) Failover Clustering
17 77 (18.87%) Performance Tuning
18 74 (18.14%) Python
18 74 (18.14%) Amazon AWS
19 73 (17.89%) VMware Infrastructure
19 73 (17.89%) Infrastructure Engineering
20 71 (17.40%) SQL Server Integration Services
21 70 (17.16%) Firewall
21 70 (17.16%) DevOps
22 65 (15.93%) Oracle
23 63 (15.44%) SQL Server 2008
24 61 (14.95%) DHCP
25 60 (14.71%) Red Hat

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 40 (9.80%) IIS
2 34 (8.33%) MS Exchange
3 22 (5.39%) SharePoint
4 18 (4.41%) Confluence
5 16 (3.92%) Exchange Server 2010
6 15 (3.68%) Skype for Business
7 13 (3.19%) Elasticsearch
8 7 (1.72%) Apache
8 7 (1.72%) Exchange Server 2013
9 6 (1.47%) CMS
9 6 (1.47%) Exchange Server 2007
10 5 (1.23%) BizTalk Server
11 4 (0.98%) Apache Spark
11 4 (0.98%) nginx
11 4 (0.98%) Oracle Coherence
11 4 (0.98%) Tomcat
12 3 (0.74%) OpenStack
13 2 (0.49%) SAS
14 1 (0.25%) Office Communications Server
Applications
1 11 (2.70%) Microsoft Office
2 1 (0.25%) Microsoft Excel
Business Applications
1 1 (0.25%) Distributed Ledger
1 1 (0.25%) Siebel Analytics
Cloud Services
1 141 (34.56%) Microsoft Azure
2 74 (18.14%) Amazon AWS
3 55 (13.48%) Office 365
4 29 (7.11%) IaaS
5 22 (5.39%) Amazon EC2
5 22 (5.39%) Amazon ELB
5 22 (5.39%) AWS CloudFormation
6 21 (5.15%) SaaS
7 18 (4.41%) Google Cloud Platform
8 17 (4.17%) GitHub
9 14 (3.43%) Azure Active Directory
10 13 (3.19%) Amazon ElastiCache
10 13 (3.19%) Route 53
11 9 (2.21%) Amazon EMR
11 9 (2.21%) Amazon S3
12 8 (1.96%) Cloud Computing
12 8 (1.96%) PaaS
13 5 (1.23%) Amazon Kinesis
13 5 (1.23%) Cloudflare
13 5 (1.23%) Mimecast
Communications & Networking
1 78 (19.12%) SAN
2 70 (17.16%) Firewall
3 61 (14.95%) DHCP
4 56 (13.73%) DNS
5 41 (10.05%) TCP/IP
6 37 (9.07%) VPN
7 30 (7.35%) NAS
8 22 (5.39%) WAN
9 18 (4.41%) Internet
10 16 (3.92%) HTTP
10 16 (3.92%) VLAN
11 14 (3.43%) LAN
11 14 (3.43%) Skype
12 12 (2.94%) Cisco ASA
13 11 (2.70%) iSCSI
13 11 (2.70%) MPLS
14 10 (2.45%) IPsec
14 10 (2.45%) Remote Desktop
14 10 (2.45%) Unified Communications
14 10 (2.45%) Wireless
Database & Business Intelligence
1 239 (58.58%) SQL Server
2 71 (17.40%) SQL Server Integration Services
3 63 (15.44%) SQL Server 2008
4 59 (14.46%) SQL Server Reporting Services
5 47 (11.52%) Relational Database
6 42 (10.29%) Oracle Database
6 42 (10.29%) SQL Server 2014
7 41 (10.05%) MySQL
8 38 (9.31%) SQL Server Analysis Services
9 36 (8.82%) SQL Server 2012
10 33 (8.09%) SQL Server 2016
11 31 (7.60%) PostgreSQL
12 25 (6.13%) Amazon RDS
12 25 (6.13%) NoSQL
13 19 (4.66%) RDBMS
14 18 (4.41%) Redis
15 17 (4.17%) Data Warehouse
16 16 (3.92%) MongoDB
17 14 (3.43%) Big Data
18 13 (3.19%) Event Store
Development Applications
1 25 (6.13%) TeamCity
2 23 (5.64%) Jenkins
3 19 (4.66%) Git (software)
4 18 (4.41%) Octopus Deploy
5 13 (3.19%) JIRA
5 13 (3.19%) Subversion
6 9 (2.21%) Visual Studio
7 8 (1.96%) Team Foundation Server
8 7 (1.72%) Atlassian Bamboo
8 7 (1.72%) Maven
9 6 (1.47%) Visual Studio Team System
10 3 (0.74%) git-flow
10 3 (0.74%) Travis CI
10 3 (0.74%) webpack
11 2 (0.49%) Cucumber
11 2 (0.49%) Mocha
11 2 (0.49%) MSI
12 1 (0.25%) Bitbucket
12 1 (0.25%) Hudson
12 1 (0.25%) Sonatype Nexus
General
1 115 (28.19%) Finance
2 42 (10.29%) Banking
3 17 (4.17%) Retail
4 7 (1.72%) Advertising
4 7 (1.72%) Marketing
5 5 (1.23%) Telecoms
6 4 (0.98%) Law
7 3 (0.74%) Legal
7 3 (0.74%) Publishing
8 2 (0.49%) Back Office
8 2 (0.49%) Games
Job Titles
1 169 (41.42%) DBA
2 135 (33.09%) SQL DBA
3 95 (23.28%) Administrator
4 80 (19.61%) SQL Server DBA
5 63 (15.44%) Infrastructure Engineer
6 36 (8.82%) Senior DBA
7 25 (6.13%) DevOps Engineer
7 25 (6.13%) Microsoft Engineer
8 24 (5.88%) Microsoft Infrastructure Engineer
9 23 (5.64%) Azure Engineer
9 23 (5.64%) Oracle DBA
10 22 (5.39%) Support Engineer
11 21 (5.15%) Senior SQL DBA
12 19 (4.66%) Architect
13 18 (4.41%) AWS DevOps
14 14 (3.43%) 3rd Line Engineer
14 14 (3.43%) PostgreSQL DBA
14 14 (3.43%) Senior Oracle DBA
15 13 (3.19%) Linux Engineer
16 12 (2.94%) Security Engineer
Libraries, Frameworks & Software Standards
1 23 (5.64%) RabbitMQ
2 20 (4.90%) .NET
3 15 (3.68%) Ajax
3 15 (3.68%) ASP.NET
3 15 (3.68%) HTML
4 13 (3.19%) .NET Framework
4 13 (3.19%) Elastic Stack
4 13 (3.19%) REST
5 11 (2.70%) Flash
5 11 (2.70%) Kafka
6 10 (2.45%) Web Services
7 9 (2.21%) ActiveMQ
8 8 (1.96%) 802.1X
9 7 (1.72%) TensorFlow
10 5 (1.23%) Akka
10 5 (1.23%) LAMP
10 5 (1.23%) Memcached
10 5 (1.23%) XMPP
11 4 (0.98%) Middleware
11 4 (0.98%) Spring
Miscellaneous
1 103 (25.25%) Replication
2 48 (11.76%) Data Centre
3 23 (5.64%) Analytical Skills
4 17 (4.17%) Computer Science
5 11 (2.70%) Hedge funds
6 10 (2.45%) Private Cloud
6 10 (2.45%) Self-Motivation
7 9 (2.21%) Linux Command Line
8 8 (1.96%) Fintech
9 7 (1.72%) EMC VNX
10 6 (1.47%) Algorithms
10 6 (1.47%) EMC VMAX
10 6 (1.47%) Public Cloud
11 5 (1.23%) Greenfield Project
12 4 (0.98%) iPhone
12 4 (0.98%) Management Information System
12 4 (0.98%) PKI
13 3 (0.74%) FlexPod
13 3 (0.74%) N-Tier
13 3 (0.74%) VxBlock/Vblock
Operating Systems
1 184 (45.10%) Windows
2 121 (29.66%) Linux
3 112 (27.45%) Windows Server
4 60 (14.71%) Red Hat Enterprise Linux
5 49 (12.01%) Windows Server 2008
6 40 (9.80%) Windows Server 2012
7 19 (4.66%) CentOS
7 19 (4.66%) Windows 10
8 15 (3.68%) Ubuntu
9 14 (3.43%) Oracle Linux
10 9 (2.21%) Unix
11 8 (1.96%) Windows 7
12 7 (1.72%) Solaris
12 7 (1.72%) Windows Server 2003
13 5 (1.23%) VMS
13 5 (1.23%) Windows 8
14 3 (0.74%) SUSE
15 2 (0.49%) Apple iOS
16 1 (0.25%) Debian
16 1 (0.25%) FreeBSD
Processes & Methodologies
1 159 (38.97%) High Availability
2 94 (23.04%) Disaster Recovery
3 93 (22.79%) ITIL
4 77 (18.87%) Performance Tuning
5 73 (17.89%) Infrastructure Engineering
6 70 (17.16%) DevOps
7 57 (13.97%) Capacity Planning
8 52 (12.75%) Migration
9 49 (12.01%) Agile Software Development
10 46 (11.27%) Continuous Integration
11 43 (10.54%) Load Balancing
11 43 (10.54%) Performance Optimisation
12 40 (9.80%) Runbook
13 37 (9.07%) Database Security
14 34 (8.33%) Change Control
14 34 (8.33%) Problem-Solving
15 33 (8.09%) Capacity Management
16 30 (7.35%) Configuration Management
16 30 (7.35%) Proactive Monitoring
17 26 (6.37%) Trend Analysis
Programming Languages
1 227 (55.64%) SQL
2 85 (20.83%) PowerShell
3 82 (20.10%) T-SQL
4 74 (18.14%) Python
5 35 (8.58%) Java
6 32 (7.84%) C#
7 29 (7.11%) JavaScript
8 26 (6.37%) Bash Shell
9 16 (3.92%) Go
10 15 (3.68%) Ruby
11 14 (3.43%) Perl
12 9 (2.21%) Bourne shell
12 9 (2.21%) Korn
13 8 (1.96%) PL/SQL
14 7 (1.72%) Scala
15 5 (1.23%) PHP
16 4 (0.98%) Java 8
16 4 (0.98%) VB
16 4 (0.98%) VBScript
17 3 (0.74%) Haskell
Qualifications
1 27 (6.62%) Microsoft Certification
2 22 (5.39%) Degree
3 21 (5.15%) MCSE
4 16 (3.92%) Cisco Certification
5 15 (3.68%) MCSA
5 15 (3.68%) VMware Certified Professional (VCP)
6 13 (3.19%) CCNP
7 12 (2.94%) Computer Science Degree
8 10 (2.45%) AWS Certification
9 9 (2.21%) ITIL Certification
10 7 (1.72%) MCITP
10 7 (1.72%) VCP5
11 5 (1.23%) CCIE
11 5 (1.23%) CCVP
11 5 (1.23%) MCP
12 4 (0.98%) CCNA
13 3 (0.74%) RHCE
13 3 (0.74%) Security Cleared
13 3 (0.74%) VCP6
14 2 (0.49%) ITIL Foundation Certificate
Quality Assurance & Compliance
1 20 (4.90%) QA
2 7 (1.72%) GDPR
3 4 (0.98%) SLA
4 2 (0.49%) Data Quality
4 2 (0.49%) PSD2
5 1 (0.25%) Cyber Essentials
5 1 (0.25%) HIPAA
5 1 (0.25%) ISO/IEC 27001
5 1 (0.25%) Sarbanes-Oxley
System Software
1 149 (36.52%) Active Directory
2 73 (17.89%) VMware Infrastructure
3 49 (12.01%) Hyper-V
4 40 (9.80%) Docker
5 23 (5.64%) Oracle RAC
6 20 (4.90%) VMware ESXi
6 20 (4.90%) vSphere
7 19 (4.66%) XenApp
8 12 (2.94%) XenDesktop
9 11 (2.70%) Firmware
10 7 (1.72%) DFS Replication
11 6 (1.47%) Veritas Cluster Server
11 6 (1.47%) Virtual Machines
12 5 (1.23%) Microsoft App-V
13 4 (0.98%) Virtual Servers
14 3 (0.74%) Oracle Clusterware
14 3 (0.74%) vCloud
15 2 (0.49%) BitLocker
15 2 (0.49%) Microsoft Virtual Server
15 2 (0.49%) Postfix
Systems Management
1 77 (18.87%) Failover Clustering
2 59 (14.46%) Ansible
2 59 (14.46%) Opscode Chef
3 51 (12.50%) Microsoft Clustering
4 50 (12.25%) SCOM
5 41 (10.05%) SCCM
6 30 (7.35%) Puppet
7 19 (4.66%) Kubernetes
7 19 (4.66%) Terraform
8 15 (3.68%) Data Guard
9 14 (3.43%) Prometheus
10 13 (3.19%) Kibana
10 13 (3.19%) logstash
10 13 (3.19%) Nagios
10 13 (3.19%) Packer
10 13 (3.19%) WSUS
11 12 (2.94%) Docker Swarm
12 10 (2.45%) SCOrch
13 9 (2.21%) Backup Exec
13 9 (2.21%) ZABBIX
Vendors
1 144 (35.29%) Microsoft
2 112 (27.45%) VMware
3 65 (15.93%) Oracle
4 60 (14.71%) Red Hat
5 46 (11.27%) Cisco
6 37 (9.07%) HP
7 31 (7.60%) Citrix
8 21 (5.15%) CommVault
9 15 (3.68%) Veeam
10 12 (2.94%) EMC
10 12 (2.94%) Google
10 12 (2.94%) RedGate
11 9 (2.21%) Symantec
12 8 (1.96%) IBM
12 8 (1.96%) SAP
13 7 (1.72%) NetApp
13 7 (1.72%) SolarWinds
13 7 (1.72%) WatchGuard
14 6 (1.47%) EqualLogic
14 6 (1.47%) ScanSafe