Period
to 19 September 2021

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 19 September 2021 with a comparison to the same period over the previous 2 years.

Clustering
England > London
6 months to
19 Sep 2021
Same period 2020 Same period 2019
Rank 543 399 490
Rank change year-on-year -144 +91 -18
Permanent jobs citing Clustering 187 78 251
As % of all permanent jobs advertised in London 0.39% 0.38% 0.45%
As % of the Miscellaneous category 0.87% 0.93% 1.19%
Number of salaries quoted 155 70 203
10th Percentile £40,000 £37,500 £43,750
25th Percentile £50,750 £48,438 £51,250
Median annual salary (50th Percentile) £65,000 £60,000 £67,500
Median % change year-on-year +8.33% -11.11% +8.00%
75th Percentile £87,500 £65,516 £80,000
90th Percentile £112,500 £78,375 £87,500
England median annual salary £52,500 £52,500 £52,500

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 21,492 8,345 21,033
As % of all permanent IT jobs advertised in London 44.35% 40.66% 37.63%
Number of salaries quoted 12,477 6,898 16,607
10th Percentile £42,500 £42,500 £36,250
25th Percentile £53,750 £53,750 £47,500
Median annual salary (50th Percentile) £72,500 £72,500 £65,000
Median % change year-on-year - +11.54% -
75th Percentile £92,500 £95,000 £85,000
90th Percentile £112,500 £120,000 £105,000
England median annual salary £60,000 £59,000 £55,000
% change year-on-year +1.69% +7.27% +4.76%

Clustering
Job Vacancy Trend in London

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

Job vacancy trend for Clustering in London

Clustering
Salary Trend in London

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

Salary trend for Clustering in London

Clustering
Salary Histogram in London

Salary distribution for jobs citing Clustering in London over the 6 months to 19 September 2021.

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 19 September 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
Central London -42 26 £90,000 +50.00% 17
West London -46 19 £50,000 -28.57% 6
East London -3 11 £57,500 +43.75% 3
South London -15 5 £70,000 +8.65% 1
Clustering
England

For the 6 months to 19 September 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 across the London region with a requirement for Clustering.

1 74 (39.57%) SQL
2 72 (38.50%) Linux
3 71 (37.97%) Finance
4 63 (33.69%) High Availability
5 62 (33.16%) Azure
6 59 (31.55%) SQL Server
7 55 (29.41%) AWS
8 51 (27.27%) Windows
8 51 (27.27%) VMware
9 47 (25.13%) Java
9 47 (25.13%) Active Directory
10 46 (24.60%) Microsoft
10 46 (24.60%) Performance Tuning
11 45 (24.06%) Python
11 45 (24.06%) Disaster Recovery
12 41 (21.93%) Oracle
12 41 (21.93%) Microservices
13 39 (20.86%) Red Hat
14 38 (20.32%) DevOps
15 37 (19.79%) PowerShell
16 36 (19.25%) Jenkins
17 35 (18.72%) Kubernetes
18 34 (18.18%) Ansible
19 31 (16.58%) Relational Database
20 30 (16.04%) Agile Software Development
21 29 (15.51%) Banking
21 29 (15.51%) PostgreSQL
21 29 (15.51%) Google
21 29 (15.51%) SCCM
22 28 (14.97%) DNS

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 27 (14.44%) MS Exchange
2 21 (11.23%) Apache
3 16 (8.56%) nginx
4 11 (5.88%) Tomcat
5 10 (5.35%) Confluence
6 8 (4.28%) IIS
7 6 (3.21%) Traefik
8 5 (2.67%) Exchange Server 2010
9 4 (2.14%) Apache Spark
9 4 (2.14%) JBoss
10 3 (1.60%) Blackberry Enterprise Server
10 3 (1.60%) Skype for Business
11 2 (1.07%) Apache Airflow
11 2 (1.07%) Elasticsearch
11 2 (1.07%) Mule
11 2 (1.07%) Red Hat Fuse
11 2 (1.07%) SharePoint
11 2 (1.07%) WebSphere
12 1 (0.53%) OpenStack
12 1 (0.53%) WebSphere Application Server
Applications
1 2 (1.07%) Microsoft Excel
2 1 (0.53%) Microsoft Office
Business Applications
1 1 (0.53%) Dynamics GP
Cloud Services
1 62 (33.16%) Azure
2 55 (29.41%) AWS
3 27 (14.44%) Azure Active Directory
4 26 (13.90%) Microsoft 365
5 23 (12.30%) GCP
6 22 (11.76%) AWS CloudFormation
7 20 (10.70%) Power Platform
8 15 (8.02%) Azure Stack
9 11 (5.88%) Amazon CloudWatch
9 11 (5.88%) Amazon EC2
10 9 (4.81%) Amazon ECS
10 9 (4.81%) PaaS
10 9 (4.81%) SaaS
11 8 (4.28%) Amazon ElastiCache
11 8 (4.28%) Amazon Kinesis
12 6 (3.21%) Amazon EKS
12 6 (3.21%) Amazon SQS
13 5 (2.67%) IaaS
14 4 (2.14%) Cloud Computing
14 4 (2.14%) Trello
Communications & Networking
1 28 (14.97%) DNS
2 27 (14.44%) SSL
3 22 (11.76%) DHCP
4 19 (10.16%) Firewall
5 15 (8.02%) Broadband
6 13 (6.95%) VLAN
6 13 (6.95%) VPN
7 11 (5.88%) HTTP
8 8 (4.28%) TCP/IP
9 6 (3.21%) SAN
10 5 (2.67%) Internet
10 5 (2.67%) iSCSI
10 5 (2.67%) LAN
10 5 (2.67%) Wi-Fi
11 4 (2.14%) Fibre Channel
12 3 (1.60%) FTP
12 3 (1.60%) Skype
12 3 (1.60%) WAN
13 2 (1.07%) NetScaler
14 1 (0.53%) 4G
Database & Business Intelligence
1 59 (31.55%) SQL Server
2 31 (16.58%) Relational Database
3 29 (15.51%) PostgreSQL
4 23 (12.30%) MySQL
5 21 (11.23%) Redis
6 20 (10.70%) Power BI
7 19 (10.16%) RDBMS
8 18 (9.63%) SQL Server Reporting Services
9 16 (8.56%) MongoDB
9 16 (8.56%) SQL Server 2012
10 11 (5.88%) Azure SQL Database
10 11 (5.88%) MariaDB
10 11 (5.88%) NoSQL
10 11 (5.88%) Oracle Database
11 10 (5.35%) Crystal Reports
12 8 (4.28%) SQL Server Analysis Services
12 8 (4.28%) SQL Server Integration Services
12 8 (4.28%) Tableau
13 6 (3.21%) Amazon DynamoDB
13 6 (3.21%) Event Store
Development Applications
1 36 (19.25%) Jenkins
2 17 (9.09%) JIRA
2 17 (9.09%) Octopus Deploy
3 16 (8.56%) Git (software)
4 6 (3.21%) git-flow
4 6 (3.21%) Gradle
5 1 (0.53%) GitLab
5 1 (0.53%) GoCD
5 1 (0.53%) TeamCity
General
1 71 (37.97%) Finance
2 29 (15.51%) Banking
3 21 (11.23%) Social Skills
4 17 (9.09%) Analytical Skills
5 11 (5.88%) Investment Banking
6 5 (2.67%) Documentation Skills
6 5 (2.67%) Games
6 5 (2.67%) Marketing
6 5 (2.67%) Retail
7 3 (1.60%) Telecoms
8 2 (1.07%) Law
8 2 (1.07%) Presentation Skills
8 2 (1.07%) Publishing
9 1 (0.53%) Advertising
9 1 (0.53%) Environmental Health
9 1 (0.53%) Front Office
9 1 (0.53%) Legal
Job Titles
1 37 (19.79%) Developer
2 35 (18.72%) DBA
3 27 (14.44%) SQL DBA
4 25 (13.37%) SQL Server DBA
5 20 (10.70%) DevOps Engineer
6 19 (10.16%) Infrastructure Engineer
7 18 (9.63%) Cloud Engineer
8 17 (9.09%) Java Developer
9 16 (8.56%) Administrator
9 16 (8.56%) AWS Developer
10 15 (8.02%) 3rd Line Engineer
11 13 (6.95%) Linux Engineer
12 12 (6.42%) 3rd Line Infrastructure Engineer
12 12 (6.42%) Lead Developer
13 11 (5.88%) Backend Developer
13 11 (5.88%) Cloud Infrastructure Engineer
13 11 (5.88%) IT Engineer
13 11 (5.88%) Software Engineer
14 10 (5.35%) Analyst
14 10 (5.35%) Systems Engineer
Libraries, Frameworks & Software Standards
1 28 (14.97%) REST
2 22 (11.76%) Spring
3 16 (8.56%) LAMP
3 16 (8.56%) LEMP Stack
4 12 (6.42%) Elastic Stack
4 12 (6.42%) Middleware
5 11 (5.88%) Kafka
5 11 (5.88%) Spring Boot
6 10 (5.35%) LAPP Stack
6 10 (5.35%) Web Services
7 9 (4.81%) EJB
7 9 (4.81%) J2EE
7 9 (4.81%) Node.js
7 9 (4.81%) Struts
7 9 (4.81%) Velocity
8 8 (4.28%) HTML
8 8 (4.28%) HTML5
8 8 (4.28%) Lambda Expressions
9 7 (3.74%) ActiveMQ
9 7 (3.74%) React Native
Miscellaneous
1 19 (10.16%) Enterprise Software
2 16 (8.56%) PKI
3 15 (8.02%) Enterprise Storage
4 11 (5.88%) Legacy Systems
5 10 (5.35%) AS400
5 10 (5.35%) Replication
5 10 (5.35%) Virtual Team
6 6 (3.21%) Algorithms
6 6 (3.21%) Data Structures
7 5 (2.67%) Hedge funds
7 5 (2.67%) Social Media
7 5 (2.67%) Video Conferencing
8 4 (2.14%) Data Centre
8 4 (2.14%) Mainframe
9 3 (1.60%) Blackberry
9 3 (1.60%) Fixed Income
10 2 (1.07%) Contactless
10 2 (1.07%) Management Information System
10 2 (1.07%) Public Cloud
11 1 (0.53%) Hybrid Cloud
Operating Systems
1 72 (38.50%) Linux
2 51 (27.27%) Windows
3 28 (14.97%) Red Hat Enterprise Linux
4 25 (13.37%) Windows Server
5 21 (11.23%) CentOS
6 9 (4.81%) Windows Server 2008
7 8 (4.28%) Windows 10
8 6 (3.21%) Windows Server 2012
9 5 (2.67%) Solaris
10 4 (2.14%) Ubuntu
10 4 (2.14%) Unix
10 4 (2.14%) Windows Server 2019
11 3 (1.60%) Apple iOS
12 2 (1.07%) Windows Server 2016
12 2 (1.07%) zOS
13 1 (0.53%) Debian
13 1 (0.53%) FreeBSD
13 1 (0.53%) Mac OS
13 1 (0.53%) Oracle Linux
13 1 (0.53%) SUSE
Processes & Methodologies
1 63 (33.69%) High Availability
2 46 (24.60%) Performance Tuning
3 45 (24.06%) Disaster Recovery
4 41 (21.93%) Microservices
5 38 (20.32%) DevOps
6 30 (16.04%) Agile Software Development
7 26 (13.90%) Infrastructure Engineering
8 24 (12.83%) Continuous Integration
8 24 (12.83%) Data Science
9 22 (11.76%) Business Intelligence
9 22 (11.76%) Migration
10 19 (10.16%) Load Balancing
11 18 (9.63%) OO
11 18 (9.63%) Scalability Testing
12 17 (9.09%) Infrastructure as Code
12 17 (9.09%) Problem-Solving
12 17 (9.09%) Software Engineering
13 16 (8.56%) Software Deployment
14 15 (8.02%) Change Control
14 15 (8.02%) Systems Analysis
Programming Languages
1 74 (39.57%) SQL
2 47 (25.13%) Java
3 45 (24.06%) Python
4 37 (19.79%) PowerShell
5 17 (9.09%) JavaScript
6 14 (7.49%) Bash Shell
6 14 (7.49%) Scala
7 12 (6.42%) Kotlin
8 10 (5.35%) Perl
8 10 (5.35%) Shell Script
9 7 (3.74%) C
9 7 (3.74%) T-SQL
10 3 (1.60%) Java 8
11 2 (1.07%) Clojure
11 2 (1.07%) COBOL
11 2 (1.07%) Haskell
11 2 (1.07%) HLASM
11 2 (1.07%) LookML
11 2 (1.07%) PL/SQL
11 2 (1.07%) REXX
Qualifications
1 20 (10.70%) Degree
2 3 (1.60%) AWS Certification
2 3 (1.60%) ITIL Certification
3 2 (1.07%) Computer Science Degree
3 2 (1.07%) SC Cleared
3 2 (1.07%) Security Cleared
4 1 (0.53%) CCNA
4 1 (0.53%) CISA
4 1 (0.53%) Cisco Certification
4 1 (0.53%) CISMP
4 1 (0.53%) CISSP
4 1 (0.53%) CompTIA Security+
4 1 (0.53%) DV Cleared
4 1 (0.53%) ITIL Foundation Certificate
4 1 (0.53%) MCP
4 1 (0.53%) MCSA
4 1 (0.53%) Microsoft Certification
4 1 (0.53%) NCSIE
4 1 (0.53%) RHCE
4 1 (0.53%) SSCP
Quality Assurance & Compliance
1 10 (5.35%) QA
2 5 (2.67%) GDPR
3 1 (0.53%) ISO 15022
3 1 (0.53%) ISO 20022
3 1 (0.53%) ISO/IEC 27001
3 1 (0.53%) NIST
System Software
1 47 (25.13%) Active Directory
2 22 (11.76%) VMware Infrastructure
3 21 (11.23%) vSphere
4 17 (9.09%) Docker
5 10 (5.35%) iptables
6 8 (4.28%) Hyper-V
7 5 (2.67%) VMware ESXi
8 3 (1.60%) DFS Replication
8 3 (1.60%) NFS
8 3 (1.60%) Veritas Cluster Server
9 2 (1.07%) Terminal Services
10 1 (0.53%) Firmware
10 1 (0.53%) FreeRADIUS
10 1 (0.53%) pfSense
10 1 (0.53%) Virtual Machines
10 1 (0.53%) Xen
Systems Management
1 35 (18.72%) Kubernetes
2 34 (18.18%) Ansible
3 29 (15.51%) SCCM
4 28 (14.97%) Failover Clustering
5 22 (11.76%) Terraform
6 18 (9.63%) Grafana
7 12 (6.42%) Prometheus
8 11 (5.88%) Puppet
9 8 (4.28%) Microsoft Clustering
10 7 (3.74%) Microsoft Intune
10 7 (3.74%) Red Hat Satellite
11 6 (3.21%) Consul
11 6 (3.21%) Rancher
11 6 (3.21%) vCenter Server
12 4 (2.14%) NetBackup
12 4 (2.14%) QRadar
12 4 (2.14%) SCOM
13 3 (1.60%) McAfee ePO
13 3 (1.60%) Trend Micro Deep Security
13 3 (1.60%) WSUS
Vendors
1 51 (27.27%) VMware
2 46 (24.60%) Microsoft
3 41 (21.93%) Oracle
4 39 (20.86%) Red Hat
5 29 (15.51%) Google
6 16 (8.56%) 3PAR
6 16 (8.56%) Apple
7 15 (8.02%) Scality
8 11 (5.88%) Cisco
9 10 (5.35%) Atlassian
10 7 (3.74%) Veritas
11 6 (3.21%) Solarflare
11 6 (3.21%) Splunk
12 5 (2.67%) Citrix
12 5 (2.67%) HP
13 4 (2.14%) Altiris
13 4 (2.14%) McAfee
13 4 (2.14%) NetApp
13 4 (2.14%) Qualys
13 4 (2.14%) ServiceNow