Period
to 2 August 2021

The table below looks at the prevalence of the term Clustering in contract job vacancies advertised in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Clustering over the 6 months to 2 August 2021 with a comparison to the same period over the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Clustering
Central London > City of London
6 months to
2 Aug 2021
Same period 2020 Same period 2019
Rank 147 128 222
Rank change year-on-year -19 +94 +18
Contract jobs citing Clustering 16 8 22
As % of all contract jobs advertised in the City of London 0.47% 0.34% 0.33%
As % of the Miscellaneous category 1.20% 1.05% 1.08%
Number of daily rates quoted 14 6 15
10th Percentile £456 £384 £406
25th Percentile £513 £408 £450
Median daily rate (50th Percentile) £675 £463 £488
Median % change year-on-year +45.95% -5.13% +2.63%
75th Percentile £700 £513 £525
90th Percentile " £581 £560
Central London median daily rate £675 £463 £488
% change year-on-year +45.95% -5.13% +9.86%

Clustering is in the Generic IT Skills category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for generic IT skills.

All Generic IT Skills
City of London
Contract vacancies with a requirement for generic IT skills 1,336 764 2,046
As % of all contract IT jobs advertised in the City of London 39.05% 32.75% 31.14%
Number of daily rates quoted 945 533 1,538
10th Percentile £381 £313 £350
25th Percentile £463 £419 £445
Median daily rate (50th Percentile) £598 £525 £525
Median % change year-on-year +13.81% - -
75th Percentile £688 £625 £625
90th Percentile £750 £699 £677
Central London median daily rate £590 £525 £525
% change year-on-year +12.38% - -
Number of hourly rates quoted 23 32 44
10th Percentile £8.00 £12.45 £11.25
25th Percentile £12.38 £18.25 £13.32
Median hourly rate £25.50 £37.63 £20.67
Median % change year-on-year -32.23% +82.07% +3.33%
75th Percentile £37.50 £44.28 £37.50
90th Percentile £42.65 £47.75 £46.23
Central London median hourly rate £22.00 £37.50 £20.92
% change year-on-year -41.33% +79.30% +4.58%

Clustering
Job Vacancy Trend in the City of London

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

Job vacancy trend for Clustering in the City of London

Clustering
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing Clustering in the City of London.

Daily rate trend for Clustering in the City of London

Clustering
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing Clustering in the City of London over the 6 months to 2 August 2021.

Daily rate histogram for Clustering in the City of London

Clustering
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing Clustering in the City of London.

Hourly rate trend for Clustering in the City of London

Clustering
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Clustering within the City of London region over the 6 months to 2 August 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge - 1 £385 -
Clustering
Central London

For the 6 months to 2 August 2021, IT contractor 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 contract job ads across the City of London region with a requirement for Clustering.

1 11 (68.75%) High Availability
2 10 (62.50%) REST
2 10 (62.50%) Banking
3 9 (56.25%) Spring
3 9 (56.25%) Web Development
3 9 (56.25%) Scalability Testing
3 9 (56.25%) Continuous Integration
3 9 (56.25%) HTML5
3 9 (56.25%) HTML
3 9 (56.25%) Java
3 9 (56.25%) JavaScript
3 9 (56.25%) OO
3 9 (56.25%) Jenkins
3 9 (56.25%) Enterprise Software
3 9 (56.25%) Performance Tuning
3 9 (56.25%) Microservices
3 9 (56.25%) Event-Driven
4 7 (43.75%) Relational Database
4 7 (43.75%) Oracle
4 7 (43.75%) Linux
4 7 (43.75%) Capacity Planning
4 7 (43.75%) Agile Software Development
5 6 (37.50%) JSF
5 6 (37.50%) Ajax
5 6 (37.50%) GWT
5 6 (37.50%) jQuery
5 6 (37.50%) Open Source
5 6 (37.50%) OSGi
5 6 (37.50%) Continuous Improvement
5 6 (37.50%) Root Cause Analysis

Clustering
Co-occurring IT Skills in the City of 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 6 (37.50%) Apache
1 6 (37.50%) Red Hat Fuse
2 2 (12.50%) Confluence
2 2 (12.50%) SharePoint
3 1 (6.25%) Exchange Server 2010
3 1 (6.25%) MS Exchange
Cloud Services
1 5 (31.25%) Azure
2 4 (25.00%) AWS
2 4 (25.00%) Microsoft 365
3 3 (18.75%) Amazon ECS
3 3 (18.75%) AWS CloudFormation
4 2 (12.50%) GitHub
5 1 (6.25%) Amazon ElastiCache
5 1 (6.25%) Amazon Kinesis
5 1 (6.25%) Azure Active Directory
5 1 (6.25%) Cloud Computing
5 1 (6.25%) GCP
5 1 (6.25%) IaaS
5 1 (6.25%) Mimecast
5 1 (6.25%) OneDrive
5 1 (6.25%) PaaS
5 1 (6.25%) SaaS
Communications & Networking
1 6 (37.50%) DNS
2 4 (25.00%) DHCP
3 3 (18.75%) TCP/IP
4 2 (12.50%) Kerberos
4 2 (12.50%) SAN
5 1 (6.25%) Firewall
5 1 (6.25%) FTP
5 1 (6.25%) Internet
5 1 (6.25%) iSCSI
5 1 (6.25%) LAN
5 1 (6.25%) VLAN
5 1 (6.25%) VoIP
Database & Business Intelligence
1 7 (43.75%) Relational Database
2 2 (12.50%) SQL Server
3 1 (6.25%) PostgreSQL
3 1 (6.25%) RDBMS
3 1 (6.25%) SQL Server 2014
Development Applications
1 9 (56.25%) Jenkins
2 2 (12.50%) JIRA
2 2 (12.50%) Subversion
2 2 (12.50%) TeamCity
3 1 (6.25%) Git (software)
General
1 10 (62.50%) Banking
2 5 (31.25%) Finance
3 2 (12.50%) Analytical Skills
4 1 (6.25%) International Banking
Job Titles
1 6 (37.50%) Architect
1 6 (37.50%) Java Architect
1 6 (37.50%) Java Solutions Architect
1 6 (37.50%) Solutions Architect
2 5 (31.25%) Developer
2 5 (31.25%) Java Developer
3 3 (18.75%) Analyst
3 3 (18.75%) Infrastructure Engineer
4 2 (12.50%) AWS Developer
4 2 (12.50%) Azure Engineer
4 2 (12.50%) Azure Infrastructure Engineer
4 2 (12.50%) Infrastructure Analyst
4 2 (12.50%) Microsoft 365 Engineer
4 2 (12.50%) Senior Architect
4 2 (12.50%) Senior Developer
4 2 (12.50%) Senior Java Architect
4 2 (12.50%) Senior Java Developer
4 2 (12.50%) Senior Solutions Architect
4 2 (12.50%) VMware Engineer
4 2 (12.50%) VMware Infrastructure Engineer
Libraries, Frameworks & Software Standards
1 10 (62.50%) REST
2 9 (56.25%) HTML
2 9 (56.25%) HTML5
2 9 (56.25%) Spring
3 6 (37.50%) Ajax
3 6 (37.50%) AngularJS
3 6 (37.50%) Apache Camel
3 6 (37.50%) GWT
3 6 (37.50%) Hibernate
3 6 (37.50%) JDBC
3 6 (37.50%) JMS
3 6 (37.50%) jQuery
3 6 (37.50%) JSF
3 6 (37.50%) Middleware
3 6 (37.50%) OSGi
4 3 (18.75%) Spring Boot
5 2 (12.50%) LDAP
5 2 (12.50%) React
5 2 (12.50%) Redux
6 1 (6.25%) Lambda Expressions
Miscellaneous
1 9 (56.25%) Enterprise Software
2 5 (31.25%) Replication
3 3 (18.75%) Legacy Systems
4 2 (12.50%) Data Structures
5 1 (6.25%) EMC VMAX
5 1 (6.25%) Mainframe
Operating Systems
1 7 (43.75%) Linux
2 4 (25.00%) Windows
3 3 (18.75%) Windows Server
3 3 (18.75%) Windows Server 2008
4 2 (12.50%) Windows Server 2012
5 1 (6.25%) Red Hat Enterprise Linux
5 1 (6.25%) Windows 10
5 1 (6.25%) Windows 7
5 1 (6.25%) Windows Server 2016
Processes & Methodologies
1 11 (68.75%) High Availability
2 9 (56.25%) Continuous Integration
2 9 (56.25%) Event-Driven
2 9 (56.25%) Microservices
2 9 (56.25%) OO
2 9 (56.25%) Performance Tuning
2 9 (56.25%) Scalability Testing
2 9 (56.25%) Web Development
3 7 (43.75%) Agile Software Development
3 7 (43.75%) Capacity Planning
4 6 (37.50%) Continuous Improvement
4 6 (37.50%) Extreme Programming
4 6 (37.50%) Open Source
4 6 (37.50%) Root Cause Analysis
4 6 (37.50%) RUP
4 6 (37.50%) Scrum
5 4 (25.00%) Infrastructure Engineering
6 3 (18.75%) Event-Driven Architecture
6 3 (18.75%) Multithreaded Programming
6 3 (18.75%) Multithreading
Programming Languages
1 9 (56.25%) Java
1 9 (56.25%) JavaScript
2 6 (37.50%) Java 8
3 4 (25.00%) PowerShell
4 2 (12.50%) Python
5 1 (6.25%) ALGOL
5 1 (6.25%) C
5 1 (6.25%) COBOL
5 1 (6.25%) VBA
Qualifications
1 1 (6.25%) MCITP
1 1 (6.25%) MCP
1 1 (6.25%) MCSE
1 1 (6.25%) Microsoft Certification
Quality Assurance & Compliance
1 1 (6.25%) GDPR
1 1 (6.25%) Sarbanes-Oxley
System Software
1 6 (37.50%) Active Directory
2 5 (31.25%) VMware Infrastructure
3 2 (12.50%) VMware ESXi
3 2 (12.50%) XenApp
4 1 (6.25%) NFS
4 1 (6.25%) SRDF
4 1 (6.25%) vSphere
4 1 (6.25%) XenDesktop
Systems Management
1 4 (25.00%) Microsoft Clustering
2 2 (12.50%) Ansible
2 2 (12.50%) Control-M
2 2 (12.50%) EMC NetWorker
2 2 (12.50%) Netcool
2 2 (12.50%) QRadar
2 2 (12.50%) Tivoli
2 2 (12.50%) Tivoli Storage Manager
3 1 (6.25%) Icinga
Vendors
1 7 (43.75%) Oracle
2 6 (37.50%) Microsoft
2 6 (37.50%) VMware
3 3 (18.75%) EMC
4 2 (12.50%) BMC
4 2 (12.50%) Citrix
4 2 (12.50%) CyberArk
4 2 (12.50%) IBM
4 2 (12.50%) Qualys
4 2 (12.50%) Splunk
4 2 (12.50%) Symantec
5 1 (6.25%) Altiris
5 1 (6.25%) CommVault
5 1 (6.25%) HP
5 1 (6.25%) Infoblox
5 1 (6.25%) Ivanti
5 1 (6.25%) NetApp
5 1 (6.25%) Remedy
5 1 (6.25%) SolarWinds
5 1 (6.25%) Unisys