Period
to 25 June 2021

The table below looks at the prevalence of the term Clustering in permanent job vacancies. Included is a benchmarking guide to the salaries offered in vacancies that have cited Clustering over the 6 months to 25 June 2021 with a comparison to the same period over the previous 2 years.

Clustering
UK
6 months to
25 Jun 2021
Same period 2020 Same period 2019
Rank 552 538 552
Rank change year-on-year -14 +14 -25
Permanent jobs citing Clustering 453 333 732
As % of all permanent jobs advertised in the UK 0.43% 0.42% 0.51%
As % of the Miscellaneous category 1.15% 1.19% 1.46%
Number of salaries quoted 359 258 597
10th Percentile £35,000 £34,925 £37,500
25th Percentile £40,000 £40,000 £43,750
Median annual salary (50th Percentile) £52,500 £52,500 £52,500
75th Percentile £74,375 £62,500 £70,000
90th Percentile £91,500 £73,750 £80,500
UK excluding London median annual salary £45,000 £50,000 £47,500
% change year-on-year -10.00% +5.26% +5.56%

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 with a requirement for generic IT skills.

All Generic IT Skills
UK
Permanent vacancies with a requirement for generic IT skills 39,290 27,873 49,981
As % of all permanent IT jobs advertised in the UK 37.21% 34.80% 34.65%
Number of salaries quoted 24,235 22,077 38,204
10th Percentile £32,500 £31,250 £30,000
25th Percentile £42,500 £41,250 £37,500
Median annual salary (50th Percentile) £57,500 £55,000 £53,000
Median % change year-on-year +4.55% +3.77% +6.00%
75th Percentile £77,500 £76,250 £72,500
90th Percentile £96,250 £95,600 £88,750
UK excluding London median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -

Clustering
Job Vacancy Trend

Job postings citing Clustering as a proportion of all IT jobs advertised.

Job vacancy trend for Clustering in the UK

Clustering
Salary Trend

3-month moving average salary quoted in jobs citing Clustering.

Salary trend for Clustering in the UK

Clustering
Salary Histogram

Salary distribution for jobs citing Clustering over the 6 months to 25 June 2021.

Salary histogram for Clustering in the UK

Clustering
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Clustering within the UK over the 6 months to 25 June 2021. 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
England -29 403 £52,000 -0.95% 66
UK excluding London -69 254 £45,000 -10.00% 50
London +31 164 £70,000 +16.67% 19
Midlands +14 97 £40,000 -5.88% 14
Work from Home -154 88 £65,000 +8.33% 11
West Midlands 0 87 £40,000 -5.88% 6
South East -66 59 £51,250 -6.82% 15
North of England -70 47 £45,000 -10.00% 7
North West -38 35 £46,500 -7.00% 7
South West -53 25 £42,500 -15.00% 9
Wales -2 14 - - 2
Yorkshire -43 13 £36,000 -44.62%
East of England -30 11 £45,000 -18.18% 2
East Midlands -21 10 £44,938 +19.04% 8
Scotland -51 3 £41,250 - 1
North East -24 1 £45,000 +21.62%

For the 6 months to 25 June 2021, 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 with a requirement for Clustering.

1 229 (50.55%) Windows
2 213 (47.02%) Microsoft
3 209 (46.14%) VMware
4 198 (43.71%) Azure
5 190 (41.94%) SQL Server
6 189 (41.72%) Active Directory
7 156 (34.44%) AWS
8 147 (32.45%) Windows Server
9 137 (30.24%) SQL
10 125 (27.59%) PowerShell
11 119 (26.27%) VMware Infrastructure
11 119 (26.27%) Linux
12 115 (25.39%) High Availability
13 104 (22.96%) Microsoft 365
14 95 (20.97%) Disaster Recovery
14 95 (20.97%) Oracle
15 88 (19.43%) Hyper-V
16 85 (18.76%) Microsoft Clustering
17 81 (17.88%) DevOps
18 77 (17.00%) Cisco
19 76 (16.78%) Performance Tuning
20 75 (16.56%) DNS
21 74 (16.34%) Firewall
21 74 (16.34%) Replication
22 73 (16.11%) IIS
23 72 (15.89%) VMware ESXi
24 69 (15.23%) Social Skills
25 68 (15.01%) Problem-Solving
25 68 (15.01%) Infrastructure Engineering
26 67 (14.79%) MySQL

Clustering
Co-occurring IT Skills 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 73 (16.11%) IIS
2 52 (11.48%) MS Exchange
3 26 (5.74%) SharePoint
4 21 (4.64%) Apache
5 19 (4.19%) Skype for Business
6 13 (2.87%) nginx
7 12 (2.65%) Confluence
8 10 (2.21%) Exchange Server 2013
9 8 (1.77%) JBoss
10 6 (1.32%) Elasticsearch
10 6 (1.32%) Exchange Server 2010
10 6 (1.32%) Traefik
11 4 (0.88%) WebSphere
12 3 (0.66%) Apache Spark
12 3 (0.66%) Blackberry Enterprise Server
13 2 (0.44%) Adobe Experience Manager
13 2 (0.44%) CMS
13 2 (0.44%) OpenEdge
13 2 (0.44%) Red Hat Fuse
13 2 (0.44%) Tomcat
Applications
1 17 (3.75%) Microsoft Office
2 1 (0.22%) Gephi
2 1 (0.22%) Microsoft Excel
2 1 (0.22%) Microsoft PowerPoint
Business Applications
1 14 (3.09%) Remedy ITSM
2 5 (1.10%) Dynamics CRM
3 3 (0.66%) Maximo
4 2 (0.44%) Sage 200
5 1 (0.22%) Dynamics GP
Cloud Services
1 198 (43.71%) Azure
2 156 (34.44%) AWS
3 104 (22.96%) Microsoft 365
4 38 (8.39%) Azure Active Directory
4 38 (8.39%) PaaS
5 36 (7.95%) GCP
6 31 (6.84%) IaaS
7 16 (3.53%) AWS CloudFormation
7 16 (3.53%) SaaS
8 10 (2.21%) Power Platform
9 8 (1.77%) Amazon CloudWatch
9 8 (1.77%) Amazon ECS
9 8 (1.77%) Amazon ElastiCache
9 8 (1.77%) Amazon Kinesis
9 8 (1.77%) Azure Logic Apps
10 7 (1.55%) Amazon EC2
10 7 (1.55%) Azure App Service
11 6 (1.32%) Amazon EKS
11 6 (1.32%) Cloud Computing
11 6 (1.32%) Trello
Communications & Networking
1 75 (16.56%) DNS
2 74 (16.34%) Firewall
3 57 (12.58%) DHCP
4 47 (10.38%) SAN
5 44 (9.71%) TCP/IP
6 37 (8.17%) WAN
7 36 (7.95%) LAN
8 32 (7.06%) VLAN
9 22 (4.86%) VPN
10 21 (4.64%) iSCSI
10 21 (4.64%) Skype
11 20 (4.42%) HTTP
12 17 (3.75%) SSL
13 16 (3.53%) Internet
14 15 (3.31%) PBX
14 15 (3.31%) Unified Communications
15 14 (3.09%) Fibre Channel
15 14 (3.09%) Remote Desktop
15 14 (3.09%) WebEx
16 12 (2.65%) Wi-Fi
Database & Business Intelligence
1 190 (41.94%) SQL Server
2 67 (14.79%) MySQL
3 60 (13.25%) PostgreSQL
4 53 (11.70%) Relational Database
5 40 (8.83%) Oracle Database
6 39 (8.61%) RDBMS
6 39 (8.61%) SQL Server Integration Services
7 36 (7.95%) SQL Server Reporting Services
8 27 (5.96%) SQL Server Analysis Services
9 25 (5.52%) MongoDB
10 24 (5.30%) SQL Server 2012
11 20 (4.42%) SQL Server 2016
12 19 (4.19%) Data Warehouse
13 18 (3.97%) SQL Server 2014
14 17 (3.75%) Azure SQL Database
14 17 (3.75%) MariaDB
14 17 (3.75%) Oracle Database 12c
15 16 (3.53%) Oracle Exadata
16 13 (2.87%) NoSQL
16 13 (2.87%) Redis
Development Applications
1 42 (9.27%) Jenkins
2 27 (5.96%) JIRA
3 18 (3.97%) Git (software)
4 17 (3.75%) Octopus Deploy
5 6 (1.32%) git-flow
6 4 (0.88%) Gradle
7 3 (0.66%) Team Foundation Server
8 2 (0.44%) GitLab
8 2 (0.44%) JUnit
8 2 (0.44%) Visual Studio
9 1 (0.22%) GoCD
9 1 (0.22%) Maven
9 1 (0.22%) Sonatype Nexus
9 1 (0.22%) TeamCity
General
1 69 (15.23%) Social Skills
2 63 (13.91%) Finance
3 42 (9.27%) Banking
4 31 (6.84%) Analytical Skills
5 22 (4.86%) Law
6 17 (3.75%) Telecoms
7 16 (3.53%) Investment Banking
8 15 (3.31%) Documentation Skills
9 10 (2.21%) Public Sector
10 5 (1.10%) Marketing
11 4 (0.88%) Retail
12 3 (0.66%) Games
12 3 (0.66%) Legal
12 3 (0.66%) Presentation Skills
13 2 (0.44%) Back Office
13 2 (0.44%) Local Government
13 2 (0.44%) Military
13 2 (0.44%) Publishing
14 1 (0.22%) Aerospace
14 1 (0.22%) Automotive
Job Titles
1 117 (25.83%) DBA
2 63 (13.91%) SQL DBA
3 52 (11.48%) Infrastructure Engineer
4 45 (9.93%) Administrator
4 45 (9.93%) IT Engineer
5 40 (8.83%) SQL Server DBA
5 40 (8.83%) VMware Engineer
6 35 (7.73%) Architect
7 33 (7.28%) Developer
8 32 (7.06%) Support Engineer
9 30 (6.62%) MySQL DBA
10 29 (6.40%) Project Engineer
11 27 (5.96%) 3rd Line Engineer
12 25 (5.52%) Azure Engineer
13 21 (4.64%) Oracle DBA
14 20 (4.42%) Senior DBA
15 18 (3.97%) Active Directory Engineer
15 18 (3.97%) Consultant
15 18 (3.97%) Senior SQL DBA
15 18 (3.97%) Windows Engineer
Libraries, Frameworks & Software Standards
1 43 (9.49%) Web Services
2 23 (5.08%) REST
3 21 (4.64%) CGI
3 21 (4.64%) Elastic Stack
3 21 (4.64%) Spring
4 13 (2.87%) LAMP
5 12 (2.65%) .NET
5 12 (2.65%) 802.1X
5 12 (2.65%) LEMP Stack
6 10 (2.21%) AngularJS
6 10 (2.21%) J2EE
6 10 (2.21%) Kafka
6 10 (2.21%) Spring Boot
6 10 (2.21%) Struts
7 9 (1.99%) EJB
7 9 (1.99%) HTML
7 9 (1.99%) LDAP
7 9 (1.99%) React
7 9 (1.99%) Velocity
8 8 (1.77%) Lambda Expressions
Miscellaneous
1 74 (16.34%) Replication
2 37 (8.17%) Data Centre
3 24 (5.30%) Management Information System
3 24 (5.30%) Public Cloud
4 16 (3.53%) Enterprise Software
4 16 (3.53%) Virtual Team
5 14 (3.09%) BYOD
5 14 (3.09%) Hybrid Cloud
6 12 (2.65%) PKI
7 9 (1.99%) Enterprise Storage
8 8 (1.77%) Self-Motivation
9 5 (1.10%) Fixed Income
10 4 (0.88%) Driving Licence
10 4 (0.88%) Linux Command Line
11 3 (0.66%) Blackberry
11 3 (0.66%) Data Structures
11 3 (0.66%) EMC VNX
11 3 (0.66%) NHS
11 3 (0.66%) Social Media
11 3 (0.66%) Video Conferencing
Operating Systems
1 229 (50.55%) Windows
2 147 (32.45%) Windows Server
3 119 (26.27%) Linux
4 36 (7.95%) Windows Server 2012
5 35 (7.73%) Unix
6 29 (6.40%) Windows Server 2008
7 23 (5.08%) CentOS
8 22 (4.86%) Red Hat Enterprise Linux
8 22 (4.86%) Windows 10
8 22 (4.86%) Windows Server 2019
9 19 (4.19%) Windows Server 2016
10 14 (3.09%) Ubuntu
11 13 (2.87%) Solaris
12 10 (2.21%) Mac OS
13 9 (1.99%) Windows Server 2003
14 7 (1.55%) Windows 7
15 3 (0.66%) AIX
15 3 (0.66%) Apple iOS
15 3 (0.66%) Debian
15 3 (0.66%) Fedora
Processes & Methodologies
1 115 (25.39%) High Availability
2 95 (20.97%) Disaster Recovery
3 81 (17.88%) DevOps
4 76 (16.78%) Performance Tuning
5 68 (15.01%) Infrastructure Engineering
5 68 (15.01%) Problem-Solving
6 56 (12.36%) Agile Software Development
7 51 (11.26%) Migration
8 45 (9.93%) ITIL
9 42 (9.27%) Change Management
10 37 (8.17%) Load Balancing
11 35 (7.73%) ETL
12 34 (7.51%) Microservices
13 31 (6.84%) Service Delivery
14 27 (5.96%) Software Engineering
15 25 (5.52%) Capacity Planning
15 25 (5.52%) Time Management
16 24 (5.30%) Configuration Management
17 22 (4.86%) Continuous Integration
17 22 (4.86%) Problem Management
Programming Languages
1 137 (30.24%) SQL
2 125 (27.59%) PowerShell
3 64 (14.13%) Java
4 58 (12.80%) T-SQL
5 55 (12.14%) Python
6 38 (8.39%) Shell Script
7 36 (7.95%) Bash Shell
8 29 (6.40%) Perl
9 12 (2.65%) JavaScript
9 12 (2.65%) PL/SQL
10 11 (2.43%) C
10 11 (2.43%) Go
10 11 (2.43%) Scala
11 10 (2.21%) C#
12 9 (1.99%) Kotlin
13 8 (1.77%) Ruby
14 6 (1.32%) VBScript
15 2 (0.44%) Clojure
15 2 (0.44%) Haskell
15 2 (0.44%) VB
Qualifications
1 42 (9.27%) Security Cleared
2 37 (8.17%) Degree
2 37 (8.17%) Microsoft Certification
3 34 (7.51%) SC Cleared
4 32 (7.06%) MCSE
5 25 (5.52%) MCSA
6 17 (3.75%) MCITP
7 16 (3.53%) MCP
8 14 (3.09%) MCTS
9 10 (2.21%) ITIL Certification
10 7 (1.55%) CCNA
10 7 (1.55%) Cisco Certification
10 7 (1.55%) VMware Certified Professional (VCP)
11 5 (1.10%) AWS Certification
12 4 (0.88%) CISSP
12 4 (0.88%) DV Cleared
13 3 (0.66%) CCNP
14 2 (0.44%) CISA
14 2 (0.44%) MCDBA
14 2 (0.44%) SSCP
Quality Assurance & Compliance
1 45 (9.93%) SLA
2 13 (2.87%) ISO/IEC 27001
3 11 (2.43%) QA
4 6 (1.32%) GDPR
5 5 (1.10%) Accessibility
5 5 (1.10%) PMO
6 4 (0.88%) Cyber Essentials
6 4 (0.88%) Cyber Essentials PLUS
6 4 (0.88%) ISO 9001
7 2 (0.44%) HL7
7 2 (0.44%) NIST
7 2 (0.44%) PCI DSS
System Software
1 189 (41.72%) Active Directory
2 119 (26.27%) VMware Infrastructure
3 88 (19.43%) Hyper-V
4 72 (15.89%) VMware ESXi
5 32 (7.06%) vSphere
6 27 (5.96%) Docker
7 24 (5.30%) Oracle RAC
8 11 (2.43%) XenApp
9 8 (1.77%) NFS
9 8 (1.77%) Veritas Volume Manager
10 7 (1.55%) KVM
10 7 (1.55%) Virtual Machines
11 6 (1.32%) iptables
11 6 (1.32%) Terminal Services
11 6 (1.32%) Veritas Cluster Server
12 4 (0.88%) Xen
12 4 (0.88%) XenDesktop
13 3 (0.66%) Ceph
13 3 (0.66%) Citrix Hypervisor
13 3 (0.66%) DFS Replication
Systems Management
1 85 (18.76%) Microsoft Clustering
2 50 (11.04%) Failover Clustering
3 42 (9.27%) Ansible
4 40 (8.83%) SCCM
5 37 (8.17%) Kubernetes
6 36 (7.95%) vCenter Server
7 34 (7.51%) Microsoft Intune
8 23 (5.08%) Terraform
9 21 (4.64%) Puppet
10 18 (3.97%) Grafana
11 17 (3.75%) WSUS
12 16 (3.53%) Active Directory Federation Services
13 15 (3.31%) NetBackup
13 15 (3.31%) Opscode Chef
14 14 (3.09%) McAfee ePO
14 14 (3.09%) Oracle RMAN
15 12 (2.65%) SCOM
16 9 (1.99%) Data Guard
16 9 (1.99%) Prometheus
17 7 (1.55%) Single Sign-On
Vendors
1 213 (47.02%) Microsoft
2 209 (46.14%) VMware
3 95 (20.97%) Oracle
4 77 (17.00%) Cisco
5 37 (8.17%) Google
6 36 (7.95%) Red Hat
7 32 (7.06%) Citrix
8 29 (6.40%) HP
9 22 (4.86%) Dell
10 20 (4.42%) Veeam
11 19 (4.19%) Veritas
12 16 (3.53%) McAfee
13 15 (3.31%) Brocade
13 15 (3.31%) Remedy
14 14 (3.09%) 3PAR
14 14 (3.09%) Acme Packet
14 14 (3.09%) Polycom
14 14 (3.09%) Symantec
14 14 (3.09%) Yealink
15 13 (2.87%) NetApp