Period
to 15 August 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 15 August 2018 with a comparison to the same period over the previous 2 years.

Clustering
England > London
6 months to
15 Aug 2018
Same period 2017 Same period 2016
Rank 488 389 372
Rank change year-on-year -99 -17 -47
Permanent jobs citing Clustering 357 593 667
As % of all permanent IT jobs advertised in London 0.51% 0.80% 0.82%
As % of the Miscellaneous category 1.06% 1.62% 1.72%
Number of salaries quoted 311 483 580
London median annual salary £60,000 £57,500 £55,000
Median salary % change year-on-year +4.35% +4.55% -4.35%
10th Percentile £41,250 £37,500 £38,000
90th Percentile £86,250 £83,750 £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 33,695 36,674 38,716
As % of all permanent IT jobs advertised in London 48.58% 49.53% 47.71%
Number of salaries quoted 26,071 26,832 32,890
London median annual salary £62,500 £60,000 £57,500
Median salary % change year-on-year +4.17% +4.35% +4.55%
10th Percentile £35,000 £33,750 £32,500
90th Percentile £95,000 £92,500 £87,500
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 15 August 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 15 August 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 -86 65 £60,000 - 14
South London +11 28 £52,500 +16.67% 1
West London +17 18 £55,000 - 7
East London -7 7 £70,000 - 9
Clustering
England

For the 6 months to 15 August 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.

1 207 (57.98%) SQL Server
2 206 (57.70%) SQL
3 171 (47.90%) Windows
4 145 (40.62%) High Availability
5 126 (35.29%) Linux
6 122 (34.17%) Active Directory
7 109 (30.53%) Microsoft Azure
8 108 (30.25%) VMware
8 108 (30.25%) Microsoft
9 107 (29.97%) Finance
10 101 (28.29%) Windows Server
11 97 (27.17%) Disaster Recovery
12 92 (25.77%) Replication
13 76 (21.29%) ITIL
14 73 (20.45%) Red Hat
14 73 (20.45%) Infrastructure Engineering
15 72 (20.17%) Amazon AWS
15 72 (20.17%) PowerShell
16 71 (19.89%) Performance Tuning
17 70 (19.61%) SAN
17 70 (19.61%) T-SQL
18 69 (19.33%) Oracle
18 69 (19.33%) Red Hat Enterprise Linux
19 65 (18.21%) SQL Server Integration Services
20 62 (17.37%) Python
20 62 (17.37%) Opscode Chef
21 59 (16.53%) Windows Server 2008
21 59 (16.53%) Capacity Planning
22 58 (16.25%) VMware Infrastructure
23 57 (15.97%) DevOps

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 (13.17%) MS Exchange
2 40 (11.20%) IIS
3 27 (7.56%) Exchange Server 2010
4 19 (5.32%) Confluence
5 18 (5.04%) Elasticsearch
6 17 (4.76%) Exchange Server 2013
7 15 (4.20%) SharePoint
8 14 (3.92%) Site Server
9 9 (2.52%) Apache
10 7 (1.96%) Skype for Business
11 6 (1.68%) Tomcat
12 5 (1.40%) Apache Spark
12 5 (1.40%) Exchange Server 2007
13 4 (1.12%) CMS
13 4 (1.12%) Oracle Coherence
14 3 (0.84%) Moodle
15 2 (0.56%) Apache Solr
15 2 (0.56%) nginx
15 2 (0.56%) OpenStack
16 1 (0.28%) Apache Pig
Applications
1 3 (0.84%) Microsoft Office
Business Applications
1 2 (0.56%) Salesforce.com CRM
2 1 (0.28%) Distributed Ledger
Cloud Services
1 109 (30.53%) Microsoft Azure
2 72 (20.17%) Amazon AWS
3 36 (10.08%) Office 365
4 28 (7.84%) IaaS
5 23 (6.44%) Amazon EC2
6 22 (6.16%) Amazon ELB
7 21 (5.88%) AWS CloudFormation
7 21 (5.88%) GitHub
7 21 (5.88%) SaaS
8 17 (4.76%) Amazon ElastiCache
8 17 (4.76%) Route 53
9 15 (4.20%) Google Cloud Platform
10 8 (2.24%) Amazon S3
10 8 (2.24%) PaaS
11 7 (1.96%) Amazon EMR
12 5 (1.40%) Cloud Computing
13 3 (0.84%) npm
13 3 (0.84%) Serverless
14 2 (0.56%) Azure Active Directory
14 2 (0.56%) Virtual Private Cloud
Communications & Networking
1 70 (19.61%) SAN
2 48 (13.45%) Firewall
3 43 (12.04%) TCP/IP
4 40 (11.20%) DHCP
4 40 (11.20%) NAS
5 37 (10.36%) VPN
6 34 (9.52%) DNS
7 23 (6.44%) HTTP
8 21 (5.88%) Internet
9 13 (3.64%) WAN
10 12 (3.36%) Cisco ASA
11 10 (2.80%) IPv4
11 10 (2.80%) IPv6
11 10 (2.80%) LAN
12 9 (2.52%) NetScaler
13 8 (2.24%) Skype
14 7 (1.96%) iSCSI
15 6 (1.68%) Remote Desktop
15 6 (1.68%) Wi-Fi
15 6 (1.68%) Wireless
Database & Business Intelligence
1 207 (57.98%) SQL Server
2 65 (18.21%) SQL Server Integration Services
3 46 (12.89%) Relational Database
3 46 (12.89%) SQL Server Reporting Services
4 44 (12.32%) Oracle Database
4 44 (12.32%) SQL Server 2008
5 35 (9.80%) PostgreSQL
6 32 (8.96%) MySQL
6 32 (8.96%) SQL Server 2014
7 28 (7.84%) SQL Server Analysis Services
8 25 (7.00%) SQL Server 2016
9 24 (6.72%) SQL Server 2012
10 18 (5.04%) Redis
11 17 (4.76%) Event Store
12 16 (4.48%) Data Warehouse
13 15 (4.20%) NoSQL
14 14 (3.92%) Big Data
14 14 (3.92%) RDBMS
15 13 (3.64%) MongoDB
16 8 (2.24%) Hadoop
Development Applications
1 29 (8.12%) TeamCity
2 25 (7.00%) Jenkins
3 20 (5.60%) JIRA
3 20 (5.60%) Octopus Deploy
4 15 (4.20%) Git (software)
5 9 (2.52%) Atlassian Bamboo
6 8 (2.24%) Subversion
7 6 (1.68%) Visual Studio
8 5 (1.40%) Maven
9 3 (0.84%) Cucumber
9 3 (0.84%) Team Foundation Server
9 3 (0.84%) webpack
10 2 (0.56%) git-flow
10 2 (0.56%) GitLab
10 2 (0.56%) Mocha
10 2 (0.56%) MSI
10 2 (0.56%) Travis CI
10 2 (0.56%) Visual Studio Team System
11 1 (0.28%) SQL Server Management Studio (SSMS)
11 1 (0.28%) Toad
General
1 107 (29.97%) Finance
2 35 (9.80%) Banking
3 12 (3.36%) Retail
4 7 (1.96%) Advertising
5 4 (1.12%) Investment Banking
5 4 (1.12%) Marketing
5 4 (1.12%) Publishing
6 3 (0.84%) Back Office
6 3 (0.84%) Legal
7 2 (0.56%) Financial Institution
7 2 (0.56%) Games
7 2 (0.56%) Law
8 1 (0.28%) Automotive
8 1 (0.28%) Electronics
8 1 (0.28%) Manufacturing
8 1 (0.28%) Telecoms
Job Titles
1 147 (41.18%) DBA
2 111 (31.09%) SQL DBA
3 91 (25.49%) Administrator
4 68 (19.05%) SQL Server DBA
5 60 (16.81%) Infrastructure Engineer
6 47 (13.17%) Senior DBA
7 25 (7.00%) Oracle DBA
8 23 (6.44%) PostgreSQL DBA
8 23 (6.44%) Senior SQL DBA
9 21 (5.88%) AWS DevOps
10 20 (5.60%) Systems Engineer
11 19 (5.32%) Senior Oracle DBA
12 17 (4.76%) Senior Infrastructure Engineer
13 16 (4.48%) Architect
13 16 (4.48%) Azure Engineer
14 14 (3.92%) 3rd Line Engineer
14 14 (3.92%) Support Engineer
15 13 (3.64%) 3rd Line Infrastructure Engineer
15 13 (3.64%) DevOps Engineer
15 13 (3.64%) Linux Engineer
Libraries, Frameworks & Software Standards
1 24 (6.72%) .NET
1 24 (6.72%) RabbitMQ
2 22 (6.16%) HTML
3 20 (5.60%) ASP.NET
3 20 (5.60%) REST
4 18 (5.04%) Ajax
5 17 (4.76%) .NET Framework
5 17 (4.76%) Elastic Stack
6 10 (2.80%) Kafka
7 9 (2.52%) Middleware
8 7 (1.96%) Flash
8 7 (1.96%) Web Services
8 7 (1.96%) XML
9 6 (1.68%) CSS
9 6 (1.68%) Spring
10 5 (1.40%) 802.1X
10 5 (1.40%) ActiveMQ
10 5 (1.40%) LAMP
10 5 (1.40%) TensorFlow
11 4 (1.12%) Akka
Miscellaneous
1 92 (25.77%) Replication
2 33 (9.24%) Analytical Skills
3 30 (8.40%) Data Centre
4 10 (2.80%) Computer Science
5 8 (2.24%) Fintech
5 8 (2.24%) Hedge funds
6 7 (1.96%) Linux Command Line
7 6 (1.68%) Algorithms
7 6 (1.68%) EMC VMAX
7 6 (1.68%) EMC VNX
7 6 (1.68%) Self-Motivation
8 5 (1.40%) Enterprise Software
8 5 (1.40%) Public Cloud
9 4 (1.12%) iPhone
9 4 (1.12%) PKI
9 4 (1.12%) Private Cloud
10 3 (0.84%) FlexPod
10 3 (0.84%) N-Tier
10 3 (0.84%) Video Conferencing
10 3 (0.84%) VxBlock/Vblock
Operating Systems
1 171 (47.90%) Windows
2 126 (35.29%) Linux
3 101 (28.29%) Windows Server
4 69 (19.33%) Red Hat Enterprise Linux
5 59 (16.53%) Windows Server 2008
6 40 (11.20%) Windows Server 2012
7 23 (6.44%) CentOS
8 19 (5.32%) Ubuntu
8 19 (5.32%) Unix
9 13 (3.64%) Windows 10
10 10 (2.80%) Oracle Linux
11 7 (1.96%) Solaris
12 6 (1.68%) Windows 7
13 5 (1.40%) VMS
13 5 (1.40%) Windows 8
14 4 (1.12%) SUSE
14 4 (1.12%) Windows Server 2003
15 3 (0.84%) AIX
16 2 (0.56%) Apple iOS
16 2 (0.56%) Debian
Processes & Methodologies
1 145 (40.62%) High Availability
2 97 (27.17%) Disaster Recovery
3 76 (21.29%) ITIL
4 73 (20.45%) Infrastructure Engineering
5 71 (19.89%) Performance Tuning
6 59 (16.53%) Capacity Planning
7 57 (15.97%) DevOps
8 50 (14.01%) Agile Software Development
9 47 (13.17%) Continuous Integration
9 47 (13.17%) Performance Optimisation
10 41 (11.48%) Runbook
11 39 (10.92%) Problem-Solving
12 36 (10.08%) Change Control
13 34 (9.52%) Proactive Monitoring
14 31 (8.68%) Capacity Management
14 31 (8.68%) Load Balancing
15 29 (8.12%) Database Security
15 29 (8.12%) Migration
15 29 (8.12%) Trend Analysis
16 27 (7.56%) Patch Management
Programming Languages
1 206 (57.70%) SQL
2 72 (20.17%) PowerShell
3 70 (19.61%) T-SQL
4 62 (17.37%) Python
5 31 (8.68%) C#
6 28 (7.84%) Java
7 26 (7.28%) JavaScript
8 19 (5.32%) Bash Shell
8 19 (5.32%) Perl
9 9 (2.52%) Bourne shell
9 9 (2.52%) Korn
9 9 (2.52%) Scala
10 7 (1.96%) Go
11 6 (1.68%) PHP
12 5 (1.40%) Java 8
12 5 (1.40%) PL/SQL
12 5 (1.40%) Ruby
12 5 (1.40%) Shell Script
13 3 (0.84%) Haskell
14 1 (0.28%) AWK
Qualifications
1 36 (10.08%) Microsoft Certification
2 29 (8.12%) MCSE
3 26 (7.28%) MCSA
4 20 (5.60%) Degree
5 16 (4.48%) MCP
6 11 (3.08%) VMware Certified Professional (VCP)
7 9 (2.52%) Cisco Certification
8 8 (2.24%) Computer Science Degree
9 6 (1.68%) AWS Certification
9 6 (1.68%) CCNP
10 5 (1.40%) CCNA
10 5 (1.40%) MCITP
10 5 (1.40%) VCP5
11 4 (1.12%) ITIL Certification
11 4 (1.12%) Security Cleared
12 3 (0.84%) RHCE
13 2 (0.56%) DV Cleared
13 2 (0.56%) ITIL Foundation Certificate
13 2 (0.56%) Master's Degree
13 2 (0.56%) MCTS
Quality Assurance & Compliance
1 23 (6.44%) QA
2 12 (3.36%) SLA
3 4 (1.12%) GCP
4 3 (0.84%) ISO 9001
4 3 (0.84%) PCI DSS
4 3 (0.84%) PSD2
5 2 (0.56%) GDPR
6 1 (0.28%) Data Quality
6 1 (0.28%) Sarbanes-Oxley
System Software
1 122 (34.17%) Active Directory
2 58 (16.25%) VMware Infrastructure
3 35 (9.80%) Docker
4 31 (8.68%) Hyper-V
5 16 (4.48%) Oracle RAC
5 16 (4.48%) VMware ESXi
6 15 (4.20%) vSphere
7 12 (3.36%) Veritas Cluster Server
8 10 (2.80%) XenApp
9 9 (2.52%) XenDesktop
10 7 (1.96%) Firmware
10 7 (1.96%) Virtual Machines
11 6 (1.68%) NFS
12 3 (0.84%) HDFS
12 3 (0.84%) vCloud
13 2 (0.56%) Apache ZooKeeper
13 2 (0.56%) BitLocker
13 2 (0.56%) Microsoft App-V
13 2 (0.56%) Virtual Servers
14 1 (0.28%) Terminal Services
Systems Management
1 62 (17.37%) Opscode Chef
2 57 (15.97%) Failover Clustering
3 55 (15.41%) Microsoft Clustering
4 51 (14.29%) Ansible
5 33 (9.24%) SCCM
6 32 (8.96%) SCOM
7 25 (7.00%) Puppet
8 17 (4.76%) Kibana
8 17 (4.76%) logstash
8 17 (4.76%) Packer
9 14 (3.92%) Kubernetes
10 12 (3.36%) Data Guard
11 11 (3.08%) Terraform
12 9 (2.52%) SCOrch
13 8 (2.24%) Docker Swarm
13 8 (2.24%) Prometheus
14 7 (1.96%) Simpana
14 7 (1.96%) WSUS
15 6 (1.68%) Nagios
16 5 (1.40%) ZABBIX
Vendors
1 108 (30.25%) Microsoft
1 108 (30.25%) VMware
2 73 (20.45%) Red Hat
3 69 (19.33%) Oracle
4 42 (11.76%) Cisco
5 34 (9.52%) HP
6 24 (6.72%) Citrix
7 20 (5.60%) CommVault
8 14 (3.92%) EMC
9 13 (3.64%) Veeam
10 12 (3.36%) Google
11 11 (3.08%) IBM
11 11 (3.08%) NetApp
12 10 (2.80%) SAP
12 10 (2.80%) Symantec
13 7 (1.96%) RedGate
14 6 (1.68%) SolarWinds
15 5 (1.40%) Juniper
15 5 (1.40%) ServiceNow
15 5 (1.40%) WatchGuard