Period
to

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 17 August 2022 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
17 Aug 2022
Same period 2021 Same period 2020
Rank 171 156 121
Rank change year-on-year -15 -35 +102
Contract jobs citing Clustering 20 14 7
As % of all contract jobs advertised in the City of London 0.45% 0.40% 0.33%
As % of the Miscellaneous category 1.33% 1.01% 0.97%
Number of daily rates quoted 20 12 5
10th Percentile £469 £456 £439
25th Percentile £516 £513 £488
Median daily rate (50th Percentile) £730 £650 £500
Median % change year-on-year +12.31% +30.00% +2.56%
75th Percentile £800 £700 £523
90th Percentile - - £599
Central London median daily rate £705 £650 £500
% change year-on-year +8.46% +30.00% +2.56%

Clustering is in the General and Transferable 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 Skills
City of London
Contract vacancies with a requirement for generic IT skills 1,499 1,380 720
As % of all contract IT jobs advertised in the City of London 33.44% 39.62% 34.14%
Number of daily rates quoted 974 985 497
10th Percentile £366 £381 £325
25th Percentile £485 £475 £419
Median daily rate (50th Percentile) £588 £600 £525
Median % change year-on-year -2.08% +14.29% -
75th Percentile £725 £688 £625
90th Percentile £825 £770 £718
Central London median daily rate £575 £600 £525
% change year-on-year -4.09% +14.19% -
Number of hourly rates quoted 26 24 28
10th Percentile £18.50 £8.00 £12.66
25th Percentile £20.50 £12.38 £18.25
Median hourly rate £42.37 £27.00 £37.63
Median % change year-on-year +56.93% -28.24% +83.54%
75th Percentile £55.63 £37.75 £44.28
90th Percentile £63.75 £42.93 £47.75
Central London median hourly rate £42.37 £23.50 £37.50
% change year-on-year +80.30% -37.33% +80.03%

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 17 August 2022.

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

For the 6 months to 17 August 2022, 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 13 (65.00%) Performance Tuning
2 12 (60.00%) High Availability
3 11 (55.00%) Agile
3 11 (55.00%) PostgreSQL
3 11 (55.00%) REST
3 11 (55.00%) Microservices
4 10 (50.00%) React
4 10 (50.00%) Spring Boot
4 10 (50.00%) Event-Driven Architecture
4 10 (50.00%) Kafka
4 10 (50.00%) Relational Database
4 10 (50.00%) Enterprise Software
4 10 (50.00%) Multithreaded Programming
4 10 (50.00%) Event-Driven
4 10 (50.00%) Full Stack Development
4 10 (50.00%) HTML
4 10 (50.00%) Java
4 10 (50.00%) JavaScript
4 10 (50.00%) OO
4 10 (50.00%) RDBMS
4 10 (50.00%) Web Development
4 10 (50.00%) Spring
4 10 (50.00%) Scalability Testing
4 10 (50.00%) WebSockets
4 10 (50.00%) HTML5
4 10 (50.00%) Multithreading
5 9 (45.00%) Redis
5 9 (45.00%) QA
5 9 (45.00%) Redux
5 9 (45.00%) Gradle

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 1 (5.00%) Confluence
1 1 (5.00%) IBM HTTP Server
1 1 (5.00%) SharePoint
1 1 (5.00%) Tomcat
1 1 (5.00%) WebSphere
1 1 (5.00%) WebSphere Application Server
Applications
1 2 (10.00%) Microsoft Office
Business Applications
1 1 (5.00%) Remedy ITSM
Cloud Services
1 3 (15.00%) AWS
1 3 (15.00%) Azure
2 2 (10.00%) GCP
2 2 (10.00%) IaaS
2 2 (10.00%) PaaS
3 1 (5.00%) Amazon CloudWatch
3 1 (5.00%) Amazon EC2
3 1 (5.00%) Amazon S3
3 1 (5.00%) AWS CloudFormation
3 1 (5.00%) Cloud Computing
3 1 (5.00%) GitHub
3 1 (5.00%) Microsoft 365
3 1 (5.00%) Nutanix
3 1 (5.00%) SaaS
3 1 (5.00%) Virtual Private Cloud
Communications & Networking
1 3 (15.00%) DNS
1 3 (15.00%) TCP/IP
2 2 (10.00%) HTTP
3 1 (5.00%) DHCP
3 1 (5.00%) Fibre Channel
3 1 (5.00%) Firewall
3 1 (5.00%) Internet
3 1 (5.00%) iSCSI
3 1 (5.00%) Kerberos
3 1 (5.00%) LAN
3 1 (5.00%) NAS
3 1 (5.00%) NetScaler
3 1 (5.00%) SAN
3 1 (5.00%) SSL
3 1 (5.00%) WAN
3 1 (5.00%) Wireless
3 1 (5.00%) Wireshark
Database & Business Intelligence
1 11 (55.00%) PostgreSQL
2 10 (50.00%) RDBMS
2 10 (50.00%) Relational Database
3 9 (45.00%) Redis
4 5 (25.00%) SQL Server
5 1 (5.00%) Azure SQL Database
5 1 (5.00%) MariaDB
5 1 (5.00%) Microsoft Analysis Services
5 1 (5.00%) MySQL
5 1 (5.00%) ObjectStore
5 1 (5.00%) SQL Server Analysis Services
5 1 (5.00%) SQL Server Integration Services
5 1 (5.00%) SQL Server Reporting Services
Development Applications
1 9 (45.00%) Gradle
2 2 (10.00%) Git (software)
3 1 (5.00%) Eclipse
3 1 (5.00%) GitLab
3 1 (5.00%) Jenkins
3 1 (5.00%) JIRA
3 1 (5.00%) Subversion
3 1 (5.00%) TeamCity
General
1 2 (10.00%) Finance
2 1 (5.00%) Analytical Skills
2 1 (5.00%) Banking
2 1 (5.00%) Financial Institution
2 1 (5.00%) International Banking
Job Titles
1 10 (50.00%) Developer
1 10 (50.00%) Java Developer
1 10 (50.00%) React Developer
2 4 (20.00%) Administrator
3 3 (15.00%) DBA
3 3 (15.00%) SQL DBA
4 2 (10.00%) Senior DBA
4 2 (10.00%) Senior SQL DBA
5 1 (5.00%) Database Architect
5 1 (5.00%) Development Manager
5 1 (5.00%) DevOps Engineer
5 1 (5.00%) Electronic Trading Developer
5 1 (5.00%) Electronic Trading Java Developer
5 1 (5.00%) Full Stack Developer
5 1 (5.00%) Infrastructure Engineer
5 1 (5.00%) IT Engineer
5 1 (5.00%) IT Infrastructure Engineer
5 1 (5.00%) JavaScript Developer
5 1 (5.00%) Software Manager
5 1 (5.00%) Unix Systems Administrator
Libraries, Frameworks & Software Standards
1 11 (55.00%) REST
2 10 (50.00%) HTML
2 10 (50.00%) HTML5
2 10 (50.00%) Kafka
2 10 (50.00%) React
2 10 (50.00%) Spring
2 10 (50.00%) Spring Boot
2 10 (50.00%) WebSockets
3 9 (45.00%) Redux
4 1 (5.00%) Akka
4 1 (5.00%) cloud-init
4 1 (5.00%) LDAP
4 1 (5.00%) Middleware
4 1 (5.00%) WebSphere MQ
Miscellaneous
1 10 (50.00%) Enterprise Software
2 3 (15.00%) Replication
3 1 (5.00%) PKI
Operating Systems
1 5 (25.00%) Windows
2 4 (20.00%) Linux
3 3 (15.00%) Red Hat Enterprise Linux
3 3 (15.00%) Windows Server 2012
4 2 (10.00%) Unix
4 2 (10.00%) Windows Server
5 1 (5.00%) CentOS
5 1 (5.00%) Solaris
5 1 (5.00%) Windows Server 2008
Processes & Methodologies
1 13 (65.00%) Performance Tuning
2 12 (60.00%) High Availability
3 11 (55.00%) Agile
3 11 (55.00%) Microservices
4 10 (50.00%) Event-Driven
4 10 (50.00%) Event-Driven Architecture
4 10 (50.00%) Full Stack Development
4 10 (50.00%) Multithreaded Programming
4 10 (50.00%) Multithreading
4 10 (50.00%) OO
4 10 (50.00%) Scalability Testing
4 10 (50.00%) Web Development
5 4 (20.00%) DevOps
6 3 (15.00%) CI/CD
6 3 (15.00%) Disaster Recovery
7 2 (10.00%) Database Tuning
7 2 (10.00%) Infrastructure Engineering
7 2 (10.00%) Load Balancing
7 2 (10.00%) Security Hardening
7 2 (10.00%) Storage Management
Programming Languages
1 10 (50.00%) Java
1 10 (50.00%) JavaScript
2 4 (20.00%) SQL
3 3 (15.00%) Bash
3 3 (15.00%) Python
4 1 (5.00%) C
4 1 (5.00%) Go
4 1 (5.00%) Perl
4 1 (5.00%) PowerShell
4 1 (5.00%) Ruby
4 1 (5.00%) Scala
4 1 (5.00%) Shell Script
4 1 (5.00%) T-SQL
4 1 (5.00%) VBA
Qualifications
1 2 (10.00%) SC Cleared
1 2 (10.00%) Security Cleared
2 1 (5.00%) BPSS Clearance
Quality Assurance & Compliance
1 9 (45.00%) QA
2 1 (5.00%) GDPR
2 1 (5.00%) NCSC
2 1 (5.00%) Sarbanes-Oxley
System Software
1 2 (10.00%) Active Directory
1 2 (10.00%) Hyper-V
1 2 (10.00%) VMware Infrastructure
2 1 (5.00%) Docker
2 1 (5.00%) Oracle RAC
2 1 (5.00%) VMware ESXi
2 1 (5.00%) vSphere
Systems Management
1 4 (20.00%) Ansible
2 2 (10.00%) Single Sign-On
3 1 (5.00%) BladeLogic
3 1 (5.00%) Control-M
3 1 (5.00%) Docker Swarm
3 1 (5.00%) EMC NetWorker
3 1 (5.00%) Graphite
3 1 (5.00%) Kubernetes
3 1 (5.00%) Microsoft Intune
3 1 (5.00%) Netcool
3 1 (5.00%) Packer
3 1 (5.00%) Podman
3 1 (5.00%) Prometheus
3 1 (5.00%) Puppet
3 1 (5.00%) QRadar
3 1 (5.00%) SCCM
3 1 (5.00%) Terraform
3 1 (5.00%) Tivoli
3 1 (5.00%) Tivoli Storage Manager
3 1 (5.00%) ZABBIX
Vendors
1 5 (25.00%) VMware
2 3 (15.00%) IBM
2 3 (15.00%) Oracle
3 2 (10.00%) BMC
3 2 (10.00%) Microsoft
3 2 (10.00%) Splunk
4 1 (5.00%) Cisco
4 1 (5.00%) Commvault
4 1 (5.00%) CyberArk
4 1 (5.00%) Dell
4 1 (5.00%) EMC
4 1 (5.00%) HP
4 1 (5.00%) Nimble Storage
4 1 (5.00%) PagerDuty
4 1 (5.00%) Qualys
4 1 (5.00%) Red Hat
4 1 (5.00%) Remedy
4 1 (5.00%) Sun
4 1 (5.00%) Tanium
4 1 (5.00%) Veritas