Period
to 10 December 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 10 December 2018 with a comparison to the same period over the previous 2 years.

Clustering
England > London
6 months to
10 Dec 2018
Same period 2017 Same period 2016
Rank 435 413 394
Rank change year-on-year -22 -19 -49
Permanent jobs citing Clustering 394 561 547
As % of all permanent IT jobs advertised in London 0.59% 0.76% 0.74%
As % of the Miscellaneous category 1.29% 1.60% 1.66%
Number of salaries quoted 346 484 482
London median annual salary £60,000 £60,000 £55,000
Median salary % change year-on-year - +9.09% -
10th Percentile £42,500 £42,500 £36,825
90th Percentile £87,500 £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 30,606 35,036 33,031
As % of all permanent IT jobs advertised in London 45.94% 47.45% 44.63%
Number of salaries quoted 24,177 25,451 27,923
London median annual salary £65,000 £60,000 £60,000
Median salary % change year-on-year +8.33% - +4.35%
10th Percentile £36,250 £35,000 £32,500
90th Percentile £97,500 £92,500 £91,250
England median annual salary £55,000 £50,000 £50,000
% change year-on-year +10.00% - +2.56%

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 10 December 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 10 December 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 -39 74 £52,500 -4.55% 10
South London +14 25 £55,000 +48.65% 5
East London +6 13 £55,000 -21.43% 2
West London -2 8 £55,000 +10.00% 2
Clustering
England

For the 6 months to 10 December 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 (54.57%) SQL Server
2 202 (51.27%) SQL
3 166 (42.13%) Windows
4 143 (36.29%) High Availability
5 136 (34.52%) Active Directory
6 135 (34.26%) Microsoft
7 126 (31.98%) Microsoft Azure
8 114 (28.93%) Linux
9 111 (28.17%) VMware
10 108 (27.41%) Finance
11 105 (26.65%) Windows Server
12 91 (23.10%) Replication
13 89 (22.59%) PowerShell
14 81 (20.56%) ITIL
15 79 (20.05%) Python
15 79 (20.05%) VMware Infrastructure
16 77 (19.54%) Amazon AWS
16 77 (19.54%) DNS
16 77 (19.54%) Firewall
17 75 (19.04%) Performance Tuning
18 72 (18.27%) T-SQL
19 70 (17.77%) SAN
19 70 (17.77%) DevOps
20 66 (16.75%) Oracle
21 62 (15.74%) Disaster Recovery
21 62 (15.74%) SQL Server Integration Services
22 61 (15.48%) Infrastructure Engineering
23 57 (14.47%) Windows Server 2008
24 56 (14.21%) SQL Server Reporting Services
25 54 (13.71%) DHCP

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 38 (9.64%) IIS
2 26 (6.60%) MS Exchange
3 22 (5.58%) SharePoint
4 14 (3.55%) Confluence
4 14 (3.55%) Elasticsearch
5 13 (3.30%) CMS
5 13 (3.30%) Exchange Server 2010
5 13 (3.30%) Skype for Business
6 12 (3.05%) Apache
7 10 (2.54%) Tomcat
8 8 (2.03%) Exchange Server 2013
9 7 (1.78%) Exchange Server 2007
10 6 (1.52%) nginx
11 5 (1.27%) BizTalk Server
12 4 (1.02%) Apache Spark
12 4 (1.02%) OpenStack
13 3 (0.76%) Oracle Application Server
13 3 (0.76%) SAS
13 3 (0.76%) SharePoint 2013
14 2 (0.51%) Oracle Coherence
Applications
1 13 (3.30%) Microsoft Office
2 3 (0.76%) MS Visio
3 1 (0.25%) Microsoft Excel
Business Applications
1 1 (0.25%) Siebel Analytics
Cloud Services
1 126 (31.98%) Microsoft Azure
2 77 (19.54%) Amazon AWS
3 45 (11.42%) Office 365
4 26 (6.60%) IaaS
5 25 (6.35%) Google Cloud Platform
6 20 (5.08%) Azure Active Directory
7 19 (4.82%) AWS CloudFormation
8 18 (4.57%) Amazon EC2
8 18 (4.57%) Amazon ELB
8 18 (4.57%) SaaS
9 14 (3.55%) GitHub
10 9 (2.28%) Amazon ElastiCache
10 9 (2.28%) Amazon EMR
10 9 (2.28%) Amazon S3
10 9 (2.28%) Cloud Computing
10 9 (2.28%) Route 53
11 7 (1.78%) Amazon Kinesis
11 7 (1.78%) Cloudflare
12 6 (1.52%) Mimecast
12 6 (1.52%) PaaS
Communications & Networking
1 77 (19.54%) DNS
1 77 (19.54%) Firewall
2 70 (17.77%) SAN
3 54 (13.71%) DHCP
4 42 (10.66%) TCP/IP
5 34 (8.63%) WAN
6 33 (8.38%) VPN
7 27 (6.85%) NAS
8 25 (6.35%) Internet
9 22 (5.58%) VLAN
10 18 (4.57%) IPsec
10 18 (4.57%) iSCSI
10 18 (4.57%) LAN
10 18 (4.57%) MPLS
10 18 (4.57%) Wireless
11 17 (4.31%) VoIP
12 15 (3.81%) Network Security
13 14 (3.55%) Cisco ASA
14 13 (3.30%) Cisco Nexus
14 13 (3.30%) Unified Communications
Database & Business Intelligence
1 215 (54.57%) SQL Server
2 62 (15.74%) SQL Server Integration Services
3 56 (14.21%) SQL Server Reporting Services
4 51 (12.94%) SQL Server 2008
5 46 (11.68%) MySQL
6 36 (9.14%) SQL Server 2012
6 36 (9.14%) SQL Server Analysis Services
7 35 (8.88%) Oracle Database
7 35 (8.88%) Relational Database
8 33 (8.38%) SQL Server 2014
9 32 (8.12%) NoSQL
9 32 (8.12%) PostgreSQL
10 29 (7.36%) SQL Server 2016
11 28 (7.11%) Amazon RDS
12 23 (5.84%) MongoDB
13 20 (5.08%) Big Data
14 18 (4.57%) Redis
15 17 (4.31%) RDBMS
16 15 (3.81%) Data Warehouse
17 14 (3.55%) Hadoop
Development Applications
1 23 (5.84%) Jenkins
2 20 (5.08%) Git (software)
3 19 (4.82%) TeamCity
4 14 (3.55%) Octopus Deploy
5 11 (2.79%) Subversion
5 11 (2.79%) Visual Studio
6 9 (2.28%) JIRA
6 9 (2.28%) Team Foundation Server
7 5 (1.27%) Atlassian Bamboo
7 5 (1.27%) Maven
7 5 (1.27%) Visual Studio Team System
8 3 (0.76%) git-flow
8 3 (0.76%) Travis CI
9 2 (0.51%) JMeter
9 2 (0.51%) Mercurial
9 2 (0.51%) MSI
9 2 (0.51%) webpack
9 2 (0.51%) Xdebug
10 1 (0.25%) Bitbucket
10 1 (0.25%) Mocha
General
1 108 (27.41%) Finance
2 47 (11.93%) Banking
3 14 (3.55%) Retail
4 10 (2.54%) Advertising
5 7 (1.78%) Marketing
6 5 (1.27%) Telecoms
7 4 (1.02%) Law
7 4 (1.02%) Legal
8 3 (0.76%) Publishing
9 1 (0.25%) Back Office
9 1 (0.25%) Games
9 1 (0.25%) German Language
9 1 (0.25%) Spanish Language
Job Titles
1 156 (39.59%) DBA
2 125 (31.73%) SQL DBA
3 92 (23.35%) Administrator
4 75 (19.04%) SQL Server DBA
5 46 (11.68%) Infrastructure Engineer
6 29 (7.36%) Senior DBA
7 25 (6.35%) DevOps Engineer
8 21 (5.33%) Architect
8 21 (5.33%) Support Engineer
9 19 (4.82%) Senior SQL DBA
10 18 (4.57%) Oracle DBA
11 17 (4.31%) 3rd Line Engineer
11 17 (4.31%) Linux Engineer
11 17 (4.31%) Microsoft Engineer
12 16 (4.06%) Developer
13 15 (3.81%) Azure Engineer
13 15 (3.81%) Azure Infrastructure Engineer
13 15 (3.81%) Microsoft Infrastructure Engineer
13 15 (3.81%) Systems Engineer
14 13 (3.30%) Security Engineer
Libraries, Frameworks & Software Standards
1 23 (5.84%) RabbitMQ
2 21 (5.33%) .NET
3 12 (3.05%) ASP.NET
3 12 (3.05%) HTML
3 12 (3.05%) Web Services
3 12 (3.05%) XMPP
4 11 (2.79%) Ajax
4 11 (2.79%) Flash
5 10 (2.54%) Kafka
6 9 (2.28%) .NET Framework
6 9 (2.28%) ActiveMQ
6 9 (2.28%) Elastic Stack
6 9 (2.28%) Memcached
6 9 (2.28%) REST
7 7 (1.78%) 802.1X
7 7 (1.78%) LAMP
7 7 (1.78%) TensorFlow
8 6 (1.52%) LEMP Stack
8 6 (1.52%) RESTful
9 5 (1.27%) LDAP
Miscellaneous
1 91 (23.10%) Replication
2 53 (13.45%) Data Centre
3 15 (3.81%) Analytical Skills
4 14 (3.55%) Self-Motivation
5 12 (3.05%) Private Cloud
6 10 (2.54%) Hedge funds
7 9 (2.28%) Fintech
7 9 (2.28%) Linux Command Line
8 8 (2.03%) Public Cloud
9 7 (1.78%) Management Information System
10 5 (1.27%) Algorithms
10 5 (1.27%) Greenfield Project
10 5 (1.27%) PKI
11 4 (1.02%) EMC VNX
12 3 (0.76%) Enterprise Software
12 3 (0.76%) Fat Client
12 3 (0.76%) Internet of Things
12 3 (0.76%) Thin Client
13 2 (0.51%) Contract for Difference
13 2 (0.51%) N-Tier
Operating Systems
1 166 (42.13%) Windows
2 114 (28.93%) Linux
3 105 (26.65%) Windows Server
4 57 (14.47%) Windows Server 2008
5 49 (12.44%) Red Hat Enterprise Linux
6 43 (10.91%) Windows Server 2012
7 21 (5.33%) Windows 10
8 16 (4.06%) CentOS
8 16 (4.06%) Unix
9 12 (3.05%) Oracle Linux
9 12 (3.05%) Ubuntu
10 11 (2.79%) Windows 7
11 10 (2.54%) Windows Server 2003
12 9 (2.28%) Windows 8
13 7 (1.78%) Solaris
14 4 (1.02%) FreeBSD
15 3 (0.76%) AIX
16 2 (0.51%) Debian
17 1 (0.25%) SUSE
17 1 (0.25%) VMS
Processes & Methodologies
1 143 (36.29%) High Availability
2 81 (20.56%) ITIL
3 75 (19.04%) Performance Tuning
4 70 (17.77%) DevOps
5 62 (15.74%) Disaster Recovery
6 61 (15.48%) Infrastructure Engineering
7 52 (13.20%) Load Balancing
8 51 (12.94%) Capacity Planning
9 49 (12.44%) Migration
10 46 (11.68%) Agile Software Development
11 41 (10.41%) Performance Optimisation
12 39 (9.90%) Continuous Integration
13 36 (9.14%) Runbook
14 34 (8.63%) Database Security
15 31 (7.87%) Configuration Management
16 30 (7.61%) Problem-Solving
17 28 (7.11%) Capacity Management
18 27 (6.85%) Change Control
19 25 (6.35%) Service Management
20 23 (5.84%) Proactive Monitoring
Programming Languages
1 202 (51.27%) SQL
2 89 (22.59%) PowerShell
3 79 (20.05%) Python
4 72 (18.27%) T-SQL
5 33 (8.38%) Java
6 32 (8.12%) Bash Shell
6 32 (8.12%) JavaScript
7 28 (7.11%) C#
8 20 (5.08%) Ruby
9 19 (4.82%) Perl
10 17 (4.31%) Go
11 9 (2.28%) VBScript
12 8 (2.03%) PHP
13 7 (1.78%) Bourne shell
13 7 (1.78%) Korn
13 7 (1.78%) PL/SQL
14 6 (1.52%) Scala
14 6 (1.52%) Shell Script
15 4 (1.02%) VB
16 3 (0.76%) C
Qualifications
1 26 (6.60%) Microsoft Certification
2 25 (6.35%) Degree
3 21 (5.33%) MCSE
4 20 (5.08%) Cisco Certification
5 19 (4.82%) CCNP
6 18 (4.57%) MCSA
6 18 (4.57%) VMware Certified Professional (VCP)
7 13 (3.30%) Computer Science Degree
8 12 (3.05%) CCIE
8 12 (3.05%) CCVP
8 12 (3.05%) ITIL Certification
9 11 (2.79%) AWS Certification
10 10 (2.54%) RHCE
11 9 (2.28%) MCITP
12 8 (2.03%) VCP5
13 5 (1.27%) MCP
14 3 (0.76%) HND
14 3 (0.76%) VCP6
15 2 (0.51%) PhD
15 2 (0.51%) RHCSA
Quality Assurance & Compliance
1 16 (4.06%) QA
2 6 (1.52%) GDPR
3 5 (1.27%) SLA
4 3 (0.76%) Data Quality
5 2 (0.51%) ISO/IEC 27001
6 1 (0.25%) Cyber Essentials
6 1 (0.25%) HIPAA
6 1 (0.25%) PSD2
System Software
1 136 (34.52%) Active Directory
2 79 (20.05%) VMware Infrastructure
3 52 (13.20%) Hyper-V
4 43 (10.91%) Docker
5 30 (7.61%) XenApp
6 25 (6.35%) vSphere
7 22 (5.58%) XenDesktop
8 21 (5.33%) Oracle RAC
9 16 (4.06%) VMware ESXi
10 15 (3.81%) Microsoft App-V
11 14 (3.55%) DFS Replication
12 11 (2.79%) Firmware
13 6 (1.52%) NFS
13 6 (1.52%) Oracle Clusterware
14 5 (1.27%) Postfix
14 5 (1.27%) Virtual Machines
15 4 (1.02%) LXC
15 4 (1.02%) Virtual Servers
16 3 (0.76%) Microsoft Virtual Server
16 3 (0.76%) Terminal Services
Systems Management
1 53 (13.45%) Ansible
2 51 (12.94%) Failover Clustering
2 51 (12.94%) Microsoft Clustering
3 49 (12.44%) Opscode Chef
4 47 (11.93%) SCOM
5 37 (9.39%) SCCM
6 28 (7.11%) Puppet
7 20 (5.08%) Terraform
7 20 (5.08%) WSUS
8 18 (4.57%) Kubernetes
9 14 (3.55%) Nagios
9 14 (3.55%) Prometheus
10 13 (3.30%) Backup Exec
11 12 (3.05%) Cisco CUCM
11 12 (3.05%) Cisco UCCE
11 12 (3.05%) Cisco UCCX
11 12 (3.05%) Data Guard
11 12 (3.05%) Docker Swarm
11 12 (3.05%) vCenter Server
12 10 (2.54%) IBM BigFix
Vendors
1 135 (34.26%) Microsoft
2 111 (28.17%) VMware
3 66 (16.75%) Oracle
4 54 (13.71%) Cisco
5 50 (12.69%) Red Hat
6 38 (9.64%) Citrix
7 34 (8.63%) HP
8 20 (5.08%) Veeam
9 18 (4.57%) IBM
10 17 (4.31%) CommVault
11 16 (4.06%) Veritas
12 15 (3.81%) Google
13 13 (3.30%) Symantec
14 12 (3.05%) Palo Alto
14 12 (3.05%) Riverbed
15 10 (2.54%) Dell
15 10 (2.54%) RedGate
15 10 (2.54%) SolarWinds
16 9 (2.28%) EqualLogic
16 9 (2.28%) NetApp