Period
to 24 October 2021

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Linux skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Linux over the 6 months to 24 October 2021 with a comparison to the same period in 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.

Linux
Central London > City of London
6 months to
24 Oct 2021
Same period 2020 Same period 2019
Rank 63 24 24
Rank change year-on-year -39 0 -1
Contract jobs citing Linux 132 126 407
As % of all contract jobs advertised in the City of London 3.42% 7.03% 6.84%
As % of the Operating Systems category 29.07% 41.04% 36.44%
Number of daily rates quoted 111 96 330
10th Percentile £413 £363 £349
25th Percentile £475 £425 £460
Median daily rate (50th Percentile) £555 £525 £550
Median % change year-on-year +5.71% -4.55% -
75th Percentile £681 £627 £637
90th Percentile £723 £672 £710
Central London median daily rate £550 £525 £538
% change year-on-year +4.76% -2.33% -2.27%
Number of hourly rates quoted 1 1 3
Median hourly rate £19.00 £37.50 £43.20
Median % change year-on-year -49.33% -13.19% +92.00%
Central London median hourly rate £19.00 £37.50 £43.20
% change year-on-year -49.33% -13.19% +92.00%

Linux is in the Operating Systems 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 operating system skills.

All Operating Systems
City of London
Contract vacancies with a requirement for operating system skills 454 307 1,117
As % of all contract IT jobs advertised in the City of London 11.75% 17.12% 18.78%
Number of daily rates quoted 367 244 884
10th Percentile £180 £200 £184
25th Percentile £363 £363 £361
Median daily rate (50th Percentile) £513 £475 £475
Median % change year-on-year +7.89% - -2.56%
75th Percentile £600 £565 £575
90th Percentile £700 £650 £650
Central London median daily rate £500 £475 £469
% change year-on-year +5.26% +1.39% -1.37%
Number of hourly rates quoted 7 4 33
10th Percentile £13.53 £20.75 £12.04
25th Percentile £13.88 £21.88 £14.00
Median hourly rate £14.25 £22.75 £20.50
Median % change year-on-year -37.36% +10.98% +9.63%
75th Percentile £16.81 £26.81 £21.50
90th Percentile £20.60 £33.68 £44.80
Central London median hourly rate £14.25 £21.25 £20.50
% change year-on-year -32.94% +3.66% +9.63%

Linux
Job Vacancy Trend in the City of London

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

Job vacancy trend for Linux in the City of London

Linux
Contractor Daily Rate Trend in the City of London

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

Daily rate trend for Linux in the City of London

Linux
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing Linux in the City of London over the 6 months to 24 October 2021.

Daily rate histogram for Linux in the City of London

Linux
Contractor Hourly Rate Trend in the City of London

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

Hourly rate trend for Linux in the City of London

For the 6 months to 24 October 2021, IT contractor jobs citing Linux 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 Linux.

1 61 (46.21%) DevOps
2 57 (43.18%) Agile Software Development
3 47 (35.61%) Finance
4 45 (34.09%) Python
5 39 (29.55%) Java
5 39 (29.55%) Unix
6 38 (28.79%) Windows
6 38 (28.79%) AWS
7 35 (26.52%) Docker
8 33 (25.00%) Azure
9 32 (24.24%) SQL
10 31 (23.48%) Ansible
11 30 (22.73%) Kubernetes
12 29 (21.97%) Red Hat Enterprise Linux
13 27 (20.45%) Terraform
14 26 (19.70%) Oracle
15 25 (18.94%) SQL Server
16 23 (17.42%) Git (software)
17 22 (16.67%) Banking
18 18 (13.64%) Migration
18 18 (13.64%) Microsoft
18 18 (13.64%) Red Hat
18 18 (13.64%) Bash Shell
19 17 (12.88%) Microservices
19 17 (12.88%) Jenkins
19 17 (12.88%) JIRA
19 17 (12.88%) Social Skills
20 15 (11.36%) Active Directory
20 15 (11.36%) Configuration Management
20 15 (11.36%) Puppet

Linux
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 9 (6.82%) Confluence
2 8 (6.06%) Elasticsearch
3 5 (3.79%) IIS
4 4 (3.03%) JBoss
4 4 (3.03%) SharePoint
4 4 (3.03%) WebLogic
5 3 (2.27%) Apache
5 3 (2.27%) Apache Spark
6 2 (1.52%) OpenStack
6 2 (1.52%) Tomcat
7 1 (0.76%) Apache Airflow
7 1 (0.76%) Appian
7 1 (0.76%) CMS
7 1 (0.76%) GemFire
7 1 (0.76%) GeoServer
7 1 (0.76%) nginx
7 1 (0.76%) Oracle SOA Suite
7 1 (0.76%) SharePoint Server
7 1 (0.76%) WebSphere
Applications
1 2 (1.52%) Microsoft Office
2 1 (0.76%) Microsoft Excel
2 1 (0.76%) MS Visio
2 1 (0.76%) Spreadsheet
Business Applications
1 2 (1.52%) SunGard Martini
Cloud Services
1 38 (28.79%) AWS
2 33 (25.00%) Azure
3 13 (9.85%) PaaS
4 11 (8.33%) GitHub
5 9 (6.82%) SaaS
6 7 (5.30%) Virtual Private Cloud
7 6 (4.55%) Cloud Computing
7 6 (4.55%) Serverless
8 5 (3.79%) Amazon S3
8 5 (3.79%) AWS CloudFormation
9 4 (3.03%) Amazon CloudWatch
9 4 (3.03%) Amazon EC2
9 4 (3.03%) IaaS
10 3 (2.27%) Amazon ECS
10 3 (2.27%) AWS CloudTrail
10 3 (2.27%) AWS Fargate
10 3 (2.27%) AWS Lambda
10 3 (2.27%) Azure Service Fabric
10 3 (2.27%) OpenShift
11 2 (1.52%) Azure App Service
Communications & Networking
1 13 (9.85%) Firewall
2 11 (8.33%) DNS
3 6 (4.55%) TCP/IP
3 6 (4.55%) VPN
4 5 (3.79%) LAN
5 4 (3.03%) IPv4
5 4 (3.03%) IPv6
5 4 (3.03%) Kerberos
6 3 (2.27%) SAN
6 3 (2.27%) SNMP
6 3 (2.27%) WAN
7 2 (1.52%) DHCP
7 2 (1.52%) HTTP
8 1 (0.76%) Broadband
8 1 (0.76%) DECT
8 1 (0.76%) Internet
8 1 (0.76%) Intranet
8 1 (0.76%) PPP
8 1 (0.76%) SSL
8 1 (0.76%) TACACS
Database & Business Intelligence
1 25 (18.94%) SQL Server
2 14 (10.61%) MongoDB
3 12 (9.09%) MySQL
3 12 (9.09%) NoSQL
4 11 (8.33%) Relational Database
5 7 (5.30%) Big Data
5 7 (5.30%) Oracle Database
6 4 (3.03%) Data Warehouse
6 4 (3.03%) Oracle Database 11g
6 4 (3.03%) Oracle Database 12c
7 3 (2.27%) Amazon RDS
7 3 (2.27%) Oracle Exadata
7 3 (2.27%) PostgreSQL
7 3 (2.27%) RDBMS
7 3 (2.27%) Redis
8 2 (1.52%) Amazon Athena
8 2 (1.52%) Azure SQL Database
8 2 (1.52%) BusinessObjects
8 2 (1.52%) Hadoop
9 1 (0.76%) Data Lake
Development Applications
1 23 (17.42%) Git (software)
2 17 (12.88%) Jenkins
2 17 (12.88%) JIRA
3 8 (6.06%) Subversion
4 5 (3.79%) GitLab
4 5 (3.79%) TeamCity
5 4 (3.03%) Bitbucket
5 4 (3.03%) Maven
6 3 (2.27%) Artifactory
6 3 (2.27%) Robot Framework
6 3 (2.27%) Selenium
6 3 (2.27%) Sonatype Nexus
7 2 (1.52%) Cucumber
7 2 (1.52%) GDB
7 2 (1.52%) Gradle
7 2 (1.52%) RSpec
7 2 (1.52%) SonarQube
8 1 (0.76%) Atlassian Bamboo
8 1 (0.76%) GCC
8 1 (0.76%) Mockito
General
1 47 (35.61%) Finance
2 22 (16.67%) Banking
3 17 (12.88%) Social Skills
4 7 (5.30%) Analytical Skills
4 7 (5.30%) Front Office
4 7 (5.30%) International Banking
4 7 (5.30%) Public Sector
5 6 (4.55%) Investment Banking
5 6 (4.55%) Law
6 5 (3.79%) Financial Institution
6 5 (3.79%) Legal
7 3 (2.27%) Documentation Skills
8 2 (1.52%) Advertising
8 2 (1.52%) Telecoms
9 1 (0.76%) Back Office
9 1 (0.76%) Games
9 1 (0.76%) Presentation Skills
9 1 (0.76%) Publishing
Job Titles
1 44 (33.33%) Developer
2 18 (13.64%) DevOps Engineer
3 17 (12.88%) Java Developer
4 12 (9.09%) Linux Engineer
5 10 (7.58%) C++ Developer
5 10 (7.58%) Python Developer
6 7 (5.30%) Administrator
6 7 (5.30%) AWS Engineer
7 6 (4.55%) Architect
8 5 (3.79%) Azure Engineer
8 5 (3.79%) Linux Administrator
8 5 (3.79%) Low Latency C++ Developer
8 5 (3.79%) Systems Administrator
9 4 (3.03%) AWS DevOps
9 4 (3.03%) Cloud Engineer
9 4 (3.03%) Linux DevOps Engineer
9 4 (3.03%) Linux Infrastructure Engineer
9 4 (3.03%) Linux/Unix DevOps
9 4 (3.03%) Oracle DBA
9 4 (3.03%) Pricing Developer
Libraries, Frameworks & Software Standards
1 9 (6.82%) LDAP
2 7 (5.30%) Node.js
2 7 (5.30%) REST
2 7 (5.30%) Spring
3 6 (4.55%) HTML
3 6 (4.55%) Middleware
3 6 (4.55%) Web Services
3 6 (4.55%) XML
3 6 (4.55%) XSLT
4 5 (3.79%) .NET
4 5 (3.79%) ARM Templates
4 5 (3.79%) FIX Protocol
4 5 (3.79%) RESTful
5 4 (3.03%) CSS
6 3 (2.27%) Java EE
6 3 (2.27%) JMS
6 3 (2.27%) OAuth
6 3 (2.27%) SAML
6 3 (2.27%) SOAP
6 3 (2.27%) XML Messaging
Miscellaneous
1 11 (8.33%) Derivative
2 8 (6.06%) Data Centre
2 8 (6.06%) Fixed Income
3 6 (4.55%) Exotic Derivative
3 6 (4.55%) Linux Command Line
4 5 (3.79%) Data Structures
5 4 (3.03%) Algorithms
5 4 (3.03%) Equities
5 4 (3.03%) Hedge funds
5 4 (3.03%) Legacy Systems
5 4 (3.03%) Public Cloud
6 3 (2.27%) Enterprise Software
6 3 (2.27%) Equity Derivative
6 3 (2.27%) Foreign Exchange (FX)
6 3 (2.27%) Management Information System
6 3 (2.27%) Replication
7 2 (1.52%) Clustering
7 2 (1.52%) DTCC
7 2 (1.52%) Embedded Systems
7 2 (1.52%) Self-Motivation
Operating Systems
1 39 (29.55%) Unix
2 38 (28.79%) Windows
3 29 (21.97%) Red Hat Enterprise Linux
4 8 (6.06%) CentOS
5 7 (5.30%) Solaris
6 6 (4.55%) Windows Server
7 4 (3.03%) Ubuntu
8 3 (2.27%) Windows Server 2016
9 2 (1.52%) OpenWrt
9 2 (1.52%) Windows 10
9 2 (1.52%) Windows Server 2008
9 2 (1.52%) Windows Server 2012
9 2 (1.52%) Windows Server 2019
10 1 (0.76%) Mac OS
10 1 (0.76%) Mac OS X
10 1 (0.76%) Windows 7
Processes & Methodologies
1 61 (46.21%) DevOps
2 57 (43.18%) Agile Software Development
3 18 (13.64%) Migration
4 17 (12.88%) Microservices
5 15 (11.36%) Configuration Management
5 15 (11.36%) Test Automation
6 13 (9.85%) Problem-Solving
6 13 (9.85%) Scrum
7 12 (9.09%) Electronic Trading
8 11 (8.33%) Computer Science
8 11 (8.33%) Continuous Integration
8 11 (8.33%) Low Latency
9 10 (7.58%) Continuous Improvement
9 10 (7.58%) Multithreading
9 10 (7.58%) SDLC
10 9 (6.82%) Mathematics
10 9 (6.82%) Observability
10 9 (6.82%) Software Engineering
11 8 (6.06%) Infrastructure as Code
11 8 (6.06%) Infrastructure Engineering
Programming Languages
1 45 (34.09%) Python
2 39 (29.55%) Java
3 32 (24.24%) SQL
4 18 (13.64%) Bash Shell
5 13 (9.85%) Shell Script
6 10 (7.58%) C++
6 10 (7.58%) JavaScript
6 10 (7.58%) PowerShell
7 8 (6.06%) Perl
8 6 (4.55%) Groovy
9 5 (3.79%) C
10 4 (3.03%) PL/SQL
10 4 (3.03%) Ruby
11 3 (2.27%) C#
12 2 (1.52%) Go
12 2 (1.52%) Scala
13 1 (0.76%) BeanShell
13 1 (0.76%) Bourne shell
13 1 (0.76%) PHP
13 1 (0.76%) TypeScript
Qualifications
1 13 (9.85%) Degree
2 9 (6.82%) Security Cleared
3 7 (5.30%) Computer Science Degree
3 7 (5.30%) SC Cleared
4 3 (2.27%) OCP
4 3 (2.27%) Oracle Certification
5 1 (0.76%) BPSS Clearance
5 1 (0.76%) CCIE
5 1 (0.76%) Cisco Certification
5 1 (0.76%) CTC Cleared
5 1 (0.76%) DV Cleared
Quality Assurance & Compliance
1 4 (3.03%) GDPR
2 2 (1.52%) PCI DSS
2 2 (1.52%) QA
3 1 (0.76%) Accessibility
3 1 (0.76%) IFRS
3 1 (0.76%) IFRS 9
3 1 (0.76%) JTAG
System Software
1 35 (26.52%) Docker
2 15 (11.36%) Active Directory
3 7 (5.30%) VMware Infrastructure
4 4 (3.03%) Oracle RAC
5 3 (2.27%) NFS
5 3 (2.27%) VMware ESXi
6 2 (1.52%) Veritas File System
6 2 (1.52%) Veritas Volume Manager
6 2 (1.52%) Virtual Servers
7 1 (0.76%) GeoWebCache
7 1 (0.76%) HDFS
7 1 (0.76%) IAG
7 1 (0.76%) LXC
7 1 (0.76%) RACF
7 1 (0.76%) Terminal Server
7 1 (0.76%) vSphere
Systems Management
1 31 (23.48%) Ansible
2 30 (22.73%) Kubernetes
3 27 (20.45%) Terraform
4 15 (11.36%) Puppet
5 6 (4.55%) Opscode Chef
5 6 (4.55%) Red Hat Satellite
6 5 (3.79%) Packer
7 4 (3.03%) Data Guard
7 4 (3.03%) QRadar
8 3 (2.27%) Control-M
8 3 (2.27%) EMC NetWorker
8 3 (2.27%) Netcool
8 3 (2.27%) Oracle RMAN
8 3 (2.27%) Tivoli
8 3 (2.27%) Tivoli Storage Manager
9 2 (1.52%) BladeLogic
9 2 (1.52%) Cobbler
9 2 (1.52%) Failover Clustering
9 2 (1.52%) ITRS Geneos
9 2 (1.52%) Nagios
Vendors
1 26 (19.70%) Oracle
2 18 (13.64%) Microsoft
2 18 (13.64%) Red Hat
3 12 (9.09%) VMware
4 11 (8.33%) Sybase
5 10 (7.58%) EMC
6 8 (6.06%) Splunk
7 7 (5.30%) CyberArk
8 5 (3.79%) Cisco
8 5 (3.79%) F5
8 5 (3.79%) HP
9 4 (3.03%) IBM
9 4 (3.03%) Qualys
10 3 (2.27%) BMC
10 3 (2.27%) Databricks
10 3 (2.27%) Juniper
10 3 (2.27%) SaltStack
11 2 (1.52%) Dell
11 2 (1.52%) ServiceNow
11 2 (1.52%) SunGard