Period
to 23 July 2021

The table below looks at the prevalence of the term Clustering in contract job vacancies advertised in London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Clustering over the 6 months to 23 July 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
England > London
6 months to
23 Jul 2021
Same period 2020 Same period 2019
Rank 369 341 466
Rank change year-on-year -28 +125 +4
Contract jobs citing Clustering 139 48 144
As % of all contract jobs advertised in London 0.47% 0.29% 0.35%
As % of the Miscellaneous category 1.39% 0.84% 1.10%
Number of daily rates quoted 101 29 102
10th Percentile £363 " £389
25th Percentile £413 £350 £450
Median daily rate (50th Percentile) £525 £438 £500
Median % change year-on-year +20.00% -12.50% +5.26%
75th Percentile £625 £523 £563
90th Percentile £688 £600 £622
England median daily rate £475 £450 £450
% change year-on-year +5.56% - +12.50%
Number of hourly rates quoted 2 2 2
10th Percentile £52.13 £45.96 £39.98
25th Percentile £53.44 £46.27 £41.06
Median hourly rate £56.25 £47.17 £44.56
Median % change year-on-year +19.26% +5.86% -1.35%
75th Percentile £58.44 £47.69 £46.87
90th Percentile £59.38 £47.77 £47.25
England median hourly rate £56.25 £43.00 £44.56
% change year-on-year +30.81% -3.49% +3.12%

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 London with a requirement for generic IT skills.

All Generic IT Skills
London
Contract vacancies with a requirement for generic IT skills 9,986 5,713 13,049
As % of all contract IT jobs advertised in London 33.54% 34.96% 32.10%
Number of daily rates quoted 7,056 4,186 9,321
10th Percentile £360 £325 £325
25th Percentile £450 £425 £419
Median daily rate (50th Percentile) £550 £538 £525
Median % change year-on-year +2.33% +2.38% +2.19%
75th Percentile £675 £650 £625
90th Percentile £750 £750 £700
England median daily rate £510 £500 £475
% change year-on-year +2.00% +5.26% -
Number of hourly rates quoted 157 89 185
10th Percentile £14.79 £13.90 £12.76
25th Percentile £20.00 £24.00 £16.60
Median hourly rate £32.50 £38.50 £24.50
Median % change year-on-year -15.58% +57.14% +2.08%
75th Percentile £46.38 £47.75 £46.85
90th Percentile £59.15 £53.75 £52.50
England median hourly rate £24.27 £25.56 £20.50
% change year-on-year -5.05% +24.68% -14.58%

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
Contractor Daily Rate Trend in London

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

Daily rate trend for Clustering in London

Clustering
Daily Rate Histogram in London

Daily rate distribution for jobs citing Clustering in London over the 6 months to 23 July 2021.

Daily rate histogram for Clustering in London

Clustering
Contractor Hourly Rate Trend in London

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

Hourly rate trend for Clustering in London

Clustering
Contract Job Locations in 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 London region over the 6 months to 23 July 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
Central London -16 15 £700 +67.16% 8
East London - 3 £403 - 1
Clustering
England

For the 6 months to 23 July 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 London region with a requirement for Clustering.

1 58 (41.73%) Linux
2 47 (33.81%) Windows
3 44 (31.65%) VMware
4 40 (28.78%) High Availability
5 39 (28.06%) Java
6 38 (27.34%) Oracle
6 38 (27.34%) AWS
7 37 (26.62%) SQL
8 36 (25.90%) Performance Tuning
9 34 (24.46%) VMware Infrastructure
9 34 (24.46%) Active Directory
9 34 (24.46%) Finance
10 31 (22.30%) Red Hat
10 31 (22.30%) Ansible
11 30 (21.58%) REST
11 30 (21.58%) Azure
11 30 (21.58%) Python
11 30 (21.58%) Agile Software Development
12 29 (20.86%) Jenkins
13 28 (20.14%) Banking
13 28 (20.14%) Microsoft
14 27 (19.42%) PowerShell
15 26 (18.71%) Microservices
15 26 (18.71%) DNS
15 26 (18.71%) Spring
16 24 (17.27%) Unix
16 24 (17.27%) GitHub
17 23 (16.55%) Continuous Integration
17 23 (16.55%) Red Hat Enterprise Linux
17 23 (16.55%) SQL Server

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 14 (10.07%) Apache
2 9 (6.47%) Confluence
2 9 (6.47%) Red Hat Fuse
3 8 (5.76%) IIS
3 8 (5.76%) MS Exchange
3 8 (5.76%) SharePoint
4 6 (4.32%) Anypoint
4 6 (4.32%) Oracle SOA Suite
4 6 (4.32%) WebLogic
4 6 (4.32%) WebLogic Portal
5 5 (3.60%) Mule
5 5 (3.60%) Mule ESB
6 4 (2.88%) Exchange Server 2010
6 4 (2.88%) OpenStack
6 4 (2.88%) Tomcat
7 3 (2.16%) Skype for Business
8 2 (1.44%) SAS
9 1 (0.72%) Adobe Experience Manager
9 1 (0.72%) WebSphere
9 1 (0.72%) WebSphere Application Server
Applications
1 7 (5.04%) Microsoft Office
2 3 (2.16%) MS Visio
Business Applications
1 6 (4.32%) Oracle Applications
1 6 (4.32%) Oracle EBS
2 2 (1.44%) Remedy ITSM
Cloud Services
1 38 (27.34%) AWS
2 30 (21.58%) Azure
3 24 (17.27%) GitHub
4 15 (10.79%) SaaS
5 14 (10.07%) IaaS
5 14 (10.07%) PaaS
6 13 (9.35%) Amazon ECS
7 12 (8.63%) Microsoft 365
8 11 (7.91%) AWS CloudFormation
8 11 (7.91%) GCP
9 9 (6.47%) Cloud Computing
10 8 (5.76%) Snowflake
11 5 (3.60%) Mimecast
12 4 (2.88%) Amazon ElastiCache
12 4 (2.88%) Amazon Kinesis
12 4 (2.88%) dbt
13 2 (1.44%) Amazon EMR
13 2 (1.44%) OneDrive
13 2 (1.44%) OpenShift
14 1 (0.72%) Azure Active Directory
Communications & Networking
1 26 (18.71%) DNS
2 21 (15.11%) TCP/IP
3 16 (11.51%) SAN
4 15 (10.79%) Firewall
5 14 (10.07%) DHCP
6 11 (7.91%) iSCSI
7 10 (7.19%) Kerberos
8 9 (6.47%) NAS
9 8 (5.76%) WAN
10 5 (3.60%) Internet
11 4 (2.88%) HTTP
12 3 (2.16%) Fibre Channel
12 3 (2.16%) LAN
12 3 (2.16%) NetScaler
12 3 (2.16%) SSL
13 2 (1.44%) MPLS
13 2 (1.44%) Remote Desktop
13 2 (1.44%) VoIP
13 2 (1.44%) VPN
13 2 (1.44%) Wireless
Database & Business Intelligence
1 23 (16.55%) SQL Server
2 20 (14.39%) PostgreSQL
3 19 (13.67%) Relational Database
4 12 (8.63%) Oracle Database
5 11 (7.91%) Oracle Database 11g
5 11 (7.91%) Oracle Database 12c
6 10 (7.19%) Looker
7 9 (6.47%) SQL Server 2012
7 9 (6.47%) SQL Server 2016
7 9 (6.47%) SQL Server 2019
8 7 (5.04%) SQL Server 2014
8 7 (5.04%) Tableau
9 6 (4.32%) Oracle BI EE
9 6 (4.32%) Oracle Database 10g
9 6 (4.32%) RDBMS
9 6 (4.32%) SQL Server 2008
10 4 (2.88%) MySQL
10 4 (2.88%) NoSQL
11 3 (2.16%) Redis
11 3 (2.16%) Sybase IQ
Development Applications
1 29 (20.86%) Jenkins
2 15 (10.79%) Git (software)
3 13 (9.35%) Subversion
4 10 (7.19%) JIRA
5 8 (5.76%) TeamCity
6 6 (4.32%) Maven
7 4 (2.88%) Serena SBM
8 3 (2.16%) Gradle
8 3 (2.16%) SQL Server Management Studio (SSMS)
9 2 (1.44%) Bitbucket
10 1 (0.72%) Artifactory
10 1 (0.72%) Hudson
10 1 (0.72%) Sonatype Nexus
General
1 34 (24.46%) Finance
2 28 (20.14%) Banking
3 21 (15.11%) Social Skills
4 7 (5.04%) Analytical Skills
5 5 (3.60%) Marketing
6 4 (2.88%) Public Sector
7 3 (2.16%) Investment Banking
7 3 (2.16%) Legal
7 3 (2.16%) Organisational Skills
8 2 (1.44%) Financial Institution
8 2 (1.44%) International Banking
9 1 (0.72%) Documentation Skills
9 1 (0.72%) German Language
9 1 (0.72%) Pharmaceutical
9 1 (0.72%) Presentation Skills
9 1 (0.72%) Spanish Language
Job Titles
1 27 (19.42%) Developer
2 22 (15.83%) Architect
3 19 (13.67%) Java Developer
4 16 (11.51%) DBA
5 14 (10.07%) Administrator
6 11 (7.91%) Service Operations Specialist
7 9 (6.47%) AWS Developer
7 9 (6.47%) Oracle DBA
7 9 (6.47%) Technical Architect
8 8 (5.76%) Solutions Architect
9 6 (4.32%) Infrastructure Engineer
9 6 (4.32%) Java Architect
9 6 (4.32%) Java Solutions Architect
9 6 (4.32%) Senior Developer
9 6 (4.32%) Senior Java Developer
9 6 (4.32%) Systems Administrator
10 5 (3.60%) C++ Developer
10 5 (3.60%) MuleSoft Architect
10 5 (3.60%) SQL DBA
11 4 (2.88%) Oracle Applications DBA
Libraries, Frameworks & Software Standards
1 30 (21.58%) REST
2 26 (18.71%) Spring
3 19 (13.67%) HTML
4 17 (12.23%) HTML5
5 15 (10.79%) Hibernate
5 15 (10.79%) JMS
6 10 (7.19%) AngularJS
6 10 (7.19%) JDBC
6 10 (7.19%) LDAP
6 10 (7.19%) Middleware
6 10 (7.19%) Spring Boot
7 9 (6.47%) Ajax
7 9 (6.47%) Apache Camel
7 9 (6.47%) GWT
7 9 (6.47%) Java EE
7 9 (6.47%) jQuery
7 9 (6.47%) JSF
7 9 (6.47%) OSGi
8 7 (5.04%) React
8 7 (5.04%) Web Services
Miscellaneous
1 22 (15.83%) Replication
2 19 (13.67%) Enterprise Software
3 10 (7.19%) Data Centre
3 10 (7.19%) Legacy Systems
4 9 (6.47%) Data Structures
5 8 (5.76%) Management Information System
6 7 (5.04%) PKI
7 4 (2.88%) Public Cloud
8 3 (2.16%) Driving Licence
8 3 (2.16%) Greenfield Project
9 2 (1.44%) Algorithms
9 2 (1.44%) EMC VMAX
10 1 (0.72%) HP StoreVirtual
10 1 (0.72%) Hybrid Cloud
10 1 (0.72%) Linux Command Line
10 1 (0.72%) Mainframe
10 1 (0.72%) Marketing Technology
10 1 (0.72%) NHS
10 1 (0.72%) Self-Motivation
Operating Systems
1 58 (41.73%) Linux
2 47 (33.81%) Windows
3 24 (17.27%) Unix
4 23 (16.55%) Red Hat Enterprise Linux
5 22 (15.83%) Windows Server
6 15 (10.79%) Windows Server 2008
7 13 (9.35%) Windows Server 2012
7 13 (9.35%) Windows Server 2016
8 10 (7.19%) Solaris
9 8 (5.76%) Windows Server 2019
10 6 (4.32%) Windows 10
11 3 (2.16%) AIX
11 3 (2.16%) CentOS
11 3 (2.16%) SUSE
11 3 (2.16%) Ubuntu
12 2 (1.44%) Windows 7
12 2 (1.44%) Windows Server 2003
13 1 (0.72%) Data ONTAP
13 1 (0.72%) HPUX
13 1 (0.72%) VMS
Processes & Methodologies
1 40 (28.78%) High Availability
2 36 (25.90%) Performance Tuning
3 30 (21.58%) Agile Software Development
4 26 (18.71%) Microservices
5 23 (16.55%) Continuous Integration
6 19 (13.67%) Event-Driven
6 19 (13.67%) OO
6 19 (13.67%) Scalability Testing
7 18 (12.95%) ITIL
8 17 (12.23%) Web Development
9 16 (11.51%) Migration
9 16 (11.51%) Open Source
9 16 (11.51%) Scrum
10 15 (10.79%) Multithreading
11 14 (10.07%) Configuration Management
11 14 (10.07%) Load Balancing
12 13 (9.35%) Analytics
12 13 (9.35%) Capacity Planning
12 13 (9.35%) Performance Monitoring
12 13 (9.35%) Root Cause Analysis
Programming Languages
1 39 (28.06%) Java
2 37 (26.62%) SQL
3 30 (21.58%) Python
4 27 (19.42%) PowerShell
5 21 (15.11%) JavaScript
6 10 (7.19%) LookML
7 9 (6.47%) Java 8
8 8 (5.76%) PL/SQL
9 7 (5.04%) Bash Shell
9 7 (5.04%) Perl
10 5 (3.60%) C++
10 5 (3.60%) Ruby
11 3 (2.16%) Shell Script
11 3 (2.16%) T-SQL
11 3 (2.16%) VBA
12 2 (1.44%) C
12 2 (1.44%) C#
13 1 (0.72%) ALGOL
13 1 (0.72%) COBOL
13 1 (0.72%) VBScript
Qualifications
1 12 (8.63%) Security Cleared
2 9 (6.47%) Degree
2 9 (6.47%) SC Cleared
3 8 (5.76%) DV Cleared
4 6 (4.32%) AWS Certification
5 5 (3.60%) Microsoft Certification
5 5 (3.60%) VMware Certified Professional (VCP)
6 4 (2.88%) MCITP
7 3 (2.16%) Computer Science Degree
7 3 (2.16%) DBS Check
7 3 (2.16%) Master's Degree
7 3 (2.16%) MCSA
8 2 (1.44%) MCP
8 2 (1.44%) MCSE
8 2 (1.44%) RHCSA
8 2 (1.44%) VCP6
9 1 (0.72%) CCNA
9 1 (0.72%) Cisco Certification
9 1 (0.72%) HND
9 1 (0.72%) RHCE
Quality Assurance & Compliance
1 9 (6.47%) GDPR
1 9 (6.47%) Sarbanes-Oxley
2 5 (3.60%) QA
3 3 (2.16%) SLA
4 1 (0.72%) Data Quality
4 1 (0.72%) IFRS
4 1 (0.72%) ISO 22301
4 1 (0.72%) ISO 9001
4 1 (0.72%) ISO/IEC 27001
4 1 (0.72%) MiFID
4 1 (0.72%) NIST
4 1 (0.72%) PCI DSS
System Software
1 34 (24.46%) Active Directory
1 34 (24.46%) VMware Infrastructure
2 17 (12.23%) VMware ESXi
3 12 (8.63%) NFS
4 7 (5.04%) Oracle RAC
4 7 (5.04%) vSphere
5 6 (4.32%) Hyper-V
6 5 (3.60%) Docker
7 4 (2.88%) Veritas File System
7 4 (2.88%) Virtual Machines
8 3 (2.16%) Ceph
8 3 (2.16%) vCloud
8 3 (2.16%) VMware NSX
9 2 (1.44%) SRDF
9 2 (1.44%) XenApp
10 1 (0.72%) DFS Replication
10 1 (0.72%) Varnish
10 1 (0.72%) Veritas Cluster Server
10 1 (0.72%) Veritas Volume Manager
10 1 (0.72%) XenDesktop
Systems Management
1 31 (22.30%) Ansible
2 21 (15.11%) Microsoft Clustering
3 18 (12.95%) Puppet
4 16 (11.51%) Opscode Chef
5 12 (8.63%) Salt
6 8 (5.76%) EMC NetWorker
6 8 (5.76%) QRadar
6 8 (5.76%) Tivoli
6 8 (5.76%) Tivoli Storage Manager
7 7 (5.04%) Control-M
7 7 (5.04%) Kubernetes
7 7 (5.04%) Netcool
8 6 (4.32%) Oracle RMAN
9 5 (3.60%) CloudHub
9 5 (3.60%) Data Guard
9 5 (3.60%) Failover Clustering
9 5 (3.60%) Red Hat Satellite
9 5 (3.60%) Terraform
9 5 (3.60%) vCenter Server
10 3 (2.16%) Icinga
Vendors
1 44 (31.65%) VMware
2 38 (27.34%) Oracle
3 31 (22.30%) Red Hat
4 28 (20.14%) Microsoft
5 15 (10.79%) EMC
5 15 (10.79%) Symantec
5 15 (10.79%) Veritas
6 14 (10.07%) SaltStack
7 12 (8.63%) IBM
8 11 (7.91%) Dell
8 11 (7.91%) HP
9 10 (7.19%) Cisco
10 9 (6.47%) BMC
10 9 (6.47%) CyberArk
11 8 (5.76%) Citrix
11 8 (5.76%) Qualys
11 8 (5.76%) Splunk
12 7 (5.04%) NetApp
13 6 (4.32%) F5
13 6 (4.32%) SAP