Period
to 29 July 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 29 July 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
29 Jul 2021
Same period 2020 Same period 2019
Rank 57 24 23
Rank change year-on-year -33 -1 0
Contract jobs citing Linux 128 168 486
As % of all contract jobs advertised in the City of London 3.74% 7.12% 7.41%
As % of the Operating Systems category 33.07% 40.48% 37.62%
Number of daily rates quoted 104 123 371
10th Percentile £369 £366 £400
25th Percentile £450 £456 £463
Median daily rate (50th Percentile) £550 £525 £550
Median % change year-on-year +4.76% -4.55% -
75th Percentile £688 £613 £625
90th Percentile £700 £690 £688
Central London median daily rate £550 £525 £550
% change year-on-year +4.76% -4.55% -
Number of hourly rates quoted 1 1 5
Median hourly rate £19.00 £37.50 £43.20
Median % change year-on-year -49.33% -13.19% +45.21%
Central London median hourly rate £19.00 £37.50 £43.20
% change year-on-year -49.33% -13.19% +45.21%

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 387 415 1,292
As % of all contract IT jobs advertised in the City of London 11.29% 17.58% 19.69%
Number of daily rates quoted 308 317 997
10th Percentile £258 £213 £168
25th Percentile £413 £353 £363
Median daily rate (50th Percentile) £514 £475 £475
Median % change year-on-year +8.16% - -5.00%
75th Percentile £638 £563 £575
90th Percentile £700 £650 £650
Central London median daily rate £513 £475 £475
% change year-on-year +7.89% - -5.00%
Number of hourly rates quoted 5 3 30
10th Percentile £13.73 £16.35 £12.04
25th Percentile £13.88 £19.88 £17.34
Median hourly rate £14.25 £27.18 £21.00
Median % change year-on-year -47.56% +29.40% +12.30%
75th Percentile £19.00 £33.42 £22.64
90th Percentile £21.40 £36.32 £38.23
Central London median hourly rate £16.19 £19.00 £21.00
% change year-on-year -14.82% -9.52% +11.41%

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 29 July 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

Linux
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 Linux within the City of London region over the 6 months to 29 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
London Bridge - 1 £385 -
Linux
Central London

For the 6 months to 29 July 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 43 (33.59%) DevOps
2 42 (32.81%) Finance
3 40 (31.25%) Python
4 37 (28.91%) Agile Software Development
5 32 (25.00%) Banking
5 32 (25.00%) Java
6 29 (22.66%) Unix
6 29 (22.66%) Windows
6 29 (22.66%) Docker
7 26 (20.31%) Red Hat Enterprise Linux
7 26 (20.31%) Azure
7 26 (20.31%) AWS
8 24 (18.75%) Oracle
9 22 (17.19%) SQL
10 20 (15.63%) Git (software)
10 20 (15.63%) Ansible
11 19 (14.84%) Kubernetes
12 18 (14.06%) Red Hat
13 17 (13.28%) Spring
13 17 (13.28%) Continuous Integration
13 17 (13.28%) Microservices
13 17 (13.28%) Bash Shell
14 16 (12.50%) Terraform
14 16 (12.50%) VMware
14 16 (12.50%) SQL Server
14 16 (12.50%) HTML
14 16 (12.50%) MySQL
15 14 (10.94%) Low Latency
15 14 (10.94%) MongoDB
15 14 (10.94%) Test Automation

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 8 (6.25%) Apache
1 8 (6.25%) Elasticsearch
2 6 (4.69%) Red Hat Fuse
3 5 (3.91%) Confluence
3 5 (3.91%) Drupal
3 5 (3.91%) WebLogic
4 4 (3.13%) Apache Spark
5 3 (2.34%) Apache Airflow
5 3 (2.34%) JBoss
5 3 (2.34%) SharePoint
5 3 (2.34%) WebSphere
6 2 (1.56%) IIS
6 2 (1.56%) Oracle SOA Suite
6 2 (1.56%) Tomcat
7 1 (0.78%) GemFire
7 1 (0.78%) nginx
7 1 (0.78%) OpenStack
7 1 (0.78%) Oracle Service Bus
7 1 (0.78%) uWSGI
7 1 (0.78%) WebLogic Portal
Applications
1 2 (1.56%) Microsoft Office
2 1 (0.78%) Microsoft Excel
Business Applications
1 5 (3.91%) Eikon
1 5 (3.91%) Refinitiv Enterprise Platform
2 1 (0.78%) ION MarketView
2 1 (0.78%) Oracle BPM
Cloud Services
1 26 (20.31%) AWS
1 26 (20.31%) Azure
2 8 (6.25%) SaaS
3 7 (5.47%) GitHub
3 7 (5.47%) PaaS
4 5 (3.91%) Amazon S3
4 5 (3.91%) Cloud Computing
4 5 (3.91%) IaaS
4 5 (3.91%) Serverless
5 4 (3.13%) Amazon EC2
6 3 (2.34%) AWS Lambda
6 3 (2.34%) GCP
6 3 (2.34%) Virtual Private Cloud
7 2 (1.56%) AWS CloudFormation
7 2 (1.56%) AWS Elastic Beanstalk
7 2 (1.56%) Azure App Service
7 2 (1.56%) Azure Functions
7 2 (1.56%) Azure Key Vault
7 2 (1.56%) Azure Service Fabric
7 2 (1.56%) Power Platform
Communications & Networking
1 13 (10.16%) Firewall
2 6 (4.69%) DNS
3 4 (3.13%) DHCP
3 4 (3.13%) LAN
3 4 (3.13%) WAN
4 3 (2.34%) Kerberos
4 3 (2.34%) Multicast
4 3 (2.34%) TCP/IP
5 2 (1.56%) HTTPS
5 2 (1.56%) Intrusion Detection
5 2 (1.56%) Network Security
5 2 (1.56%) SAN
5 2 (1.56%) VPN
5 2 (1.56%) Wireless
6 1 (0.78%) 3G
6 1 (0.78%) BGP
6 1 (0.78%) Internet
6 1 (0.78%) OSPF
6 1 (0.78%) SSH
6 1 (0.78%) Wi-Fi
Database & Business Intelligence
1 16 (12.50%) MySQL
1 16 (12.50%) SQL Server
2 14 (10.94%) MongoDB
3 11 (8.59%) Relational Database
4 10 (7.81%) NoSQL
5 5 (3.91%) Amazon DynamoDB
5 5 (3.91%) Big Data
5 5 (3.91%) Oracle Database
5 5 (3.91%) PostgreSQL
5 5 (3.91%) Redis
6 4 (3.13%) Data Warehouse
6 4 (3.13%) Hadoop
7 3 (2.34%) Amazon RDS
7 3 (2.34%) Apache Hive
7 3 (2.34%) Oracle Database 11g
7 3 (2.34%) Oracle Database 12c
7 3 (2.34%) Spark SQL
8 2 (1.56%) Power BI
8 2 (1.56%) SQL Server Analysis Services
8 2 (1.56%) SQL Server Integration Services
Development Applications
1 20 (15.63%) Git (software)
2 13 (10.16%) Jenkins
3 12 (9.38%) JIRA
4 7 (5.47%) Maven
5 4 (3.13%) Subversion
6 3 (2.34%) GCC
6 3 (2.34%) GDB
6 3 (2.34%) GitLab
6 3 (2.34%) TeamCity
6 3 (2.34%) Vagrant
7 2 (1.56%) Selenium
7 2 (1.56%) Sonatype Nexus
8 1 (0.78%) Ant
8 1 (0.78%) Bitbucket
8 1 (0.78%) Bitbucket Server
8 1 (0.78%) Eclipse
8 1 (0.78%) GoCD
8 1 (0.78%) RSpec
8 1 (0.78%) Serena SBM
General
1 42 (32.81%) Finance
2 32 (25.00%) Banking
3 13 (10.16%) Social Skills
4 7 (5.47%) Investment Banking
5 6 (4.69%) Front Office
6 5 (3.91%) Analytical Skills
7 4 (3.13%) International Banking
7 4 (3.13%) Law
7 4 (3.13%) Public Sector
8 3 (2.34%) Games
9 2 (1.56%) Advertising
10 1 (0.78%) Automotive
10 1 (0.78%) Back Office
10 1 (0.78%) Documentation Skills
10 1 (0.78%) Financial Institution
10 1 (0.78%) Multimedia
10 1 (0.78%) Presentation Skills
10 1 (0.78%) Telecoms
Job Titles
1 42 (32.81%) Developer
2 20 (15.63%) DevOps Engineer
3 15 (11.72%) Java Developer
4 13 (10.16%) Architect
5 10 (7.81%) C++ Developer
5 10 (7.81%) Senior Developer
6 8 (6.25%) Data Engineer
6 8 (6.25%) Python Developer
7 7 (5.47%) Administrator
7 7 (5.47%) Linux Engineer
7 7 (5.47%) Low Latency C++ Developer
7 7 (5.47%) Solutions Architect
8 6 (4.69%) Infrastructure Engineer
8 6 (4.69%) Java Architect
8 6 (4.69%) Java Solutions Architect
8 6 (4.69%) Senior Java Developer
9 5 (3.91%) Drupal Developer
9 5 (3.91%) Market Data Engineer
9 5 (3.91%) Market Data Support Engineer
9 5 (3.91%) Support Engineer
Libraries, Frameworks & Software Standards
1 17 (13.28%) Spring
2 16 (12.50%) HTML
3 13 (10.16%) Middleware
4 9 (7.03%) CSS
4 9 (7.03%) REST
5 8 (6.25%) AngularJS
5 8 (6.25%) JMS
5 8 (6.25%) SOAP
6 7 (5.47%) OSGi
7 6 (4.69%) Ajax
7 6 (4.69%) Apache Camel
7 6 (4.69%) GWT
7 6 (4.69%) Hibernate
7 6 (4.69%) HTML5
7 6 (4.69%) JDBC
7 6 (4.69%) jQuery
7 6 (4.69%) JSF
7 6 (4.69%) Web Services
8 5 (3.91%) FIX Protocol
8 5 (3.91%) RESTful
Miscellaneous
1 8 (6.25%) Foreign Exchange (FX)
2 7 (5.47%) Clustering
2 7 (5.47%) Enterprise Software
3 6 (4.69%) Client/Server
3 6 (4.69%) Data Centre
3 6 (4.69%) Management Information System
3 6 (4.69%) Replication
4 5 (3.91%) User Experience
5 4 (3.13%) Credit Risk
5 4 (3.13%) Derivative
5 4 (3.13%) Exotic Derivative
5 4 (3.13%) Fixed Income
5 4 (3.13%) Grid Computing
5 4 (3.13%) Linux Command Line
5 4 (3.13%) Market Risk
6 3 (2.34%) Data Structures
6 3 (2.34%) Public Cloud
7 2 (1.56%) Algorithms
7 2 (1.56%) Embedded Systems
7 2 (1.56%) Legacy Systems
Operating Systems
1 29 (22.66%) Unix
1 29 (22.66%) Windows
2 26 (20.31%) Red Hat Enterprise Linux
3 8 (6.25%) Windows Server
4 6 (4.69%) CentOS
5 5 (3.91%) Ubuntu
6 3 (2.34%) Mac OS
6 3 (2.34%) Solaris
7 2 (1.56%) Windows Server 2012
8 1 (0.78%) Android
8 1 (0.78%) Debian
8 1 (0.78%) OpenWrt
8 1 (0.78%) Windows 10
8 1 (0.78%) Windows Server 2008
8 1 (0.78%) Windows Server 2016
8 1 (0.78%) Windows Server 2019
Processes & Methodologies
1 43 (33.59%) DevOps
2 37 (28.91%) Agile Software Development
3 17 (13.28%) Continuous Integration
3 17 (13.28%) Microservices
4 14 (10.94%) High Availability
4 14 (10.94%) Low Latency
4 14 (10.94%) Test Automation
5 12 (9.38%) Performance Tuning
6 11 (8.59%) Continuous Improvement
6 11 (8.59%) Migration
6 11 (8.59%) Problem-Solving
7 10 (7.81%) Computer Science
7 10 (7.81%) Electronic Trading
7 10 (7.81%) Open Source
7 10 (7.81%) TDD
8 9 (7.03%) Infrastructure Engineering
9 8 (6.25%) Multithreading
9 8 (6.25%) Root Cause Analysis
9 8 (6.25%) Scrum
9 8 (6.25%) SDLC
Programming Languages
1 40 (31.25%) Python
2 32 (25.00%) Java
3 22 (17.19%) SQL
4 17 (13.28%) Bash Shell
5 13 (10.16%) C++
5 13 (10.16%) JavaScript
6 10 (7.81%) PowerShell
7 9 (7.03%) Shell Script
8 6 (4.69%) Java 8
9 5 (3.91%) Perl
10 4 (3.13%) C
10 4 (3.13%) Ruby
11 3 (2.34%) C#
11 3 (2.34%) PL/SQL
12 2 (1.56%) AWK
12 2 (1.56%) Groovy
12 2 (1.56%) sed
12 2 (1.56%) VBScript
13 1 (0.78%) Go
13 1 (0.78%) TypeScript
Qualifications
1 12 (9.38%) Degree
2 9 (7.03%) Computer Science Degree
3 6 (4.69%) Security Cleared
4 5 (3.91%) SC Cleared
5 3 (2.34%) CISSP
5 3 (2.34%) GIAC
6 2 (1.56%) CCNP
6 2 (1.56%) CEH
6 2 (1.56%) Cisco Certification
7 1 (0.78%) CISA
7 1 (0.78%) CISM
7 1 (0.78%) CREST Certified
7 1 (0.78%) CTC Cleared
7 1 (0.78%) DV Cleared
7 1 (0.78%) GCFA
7 1 (0.78%) GCIH
7 1 (0.78%) OCP
7 1 (0.78%) Oracle Certification
Quality Assurance & Compliance
1 3 (2.34%) QA
2 2 (1.56%) SLA
3 1 (0.78%) PCI DSS
3 1 (0.78%) SEPA
System Software
1 29 (22.66%) Docker
2 10 (7.81%) Active Directory
2 10 (7.81%) VMware Infrastructure
3 4 (3.13%) VMware ESXi
4 3 (2.34%) HDFS
4 3 (2.34%) NFS
4 3 (2.34%) Oracle RAC
5 2 (1.56%) Veritas File System
5 2 (1.56%) Veritas Volume Manager
5 2 (1.56%) VirtualBox
5 2 (1.56%) vSphere
6 1 (0.78%) BitLocker
6 1 (0.78%) RACF
6 1 (0.78%) Virtual Machines
6 1 (0.78%) XenApp
Systems Management
1 20 (15.63%) Ansible
2 19 (14.84%) Kubernetes
3 16 (12.50%) Terraform
4 11 (8.59%) Puppet
5 5 (3.91%) Opscode Chef
6 4 (3.13%) Red Hat Satellite
7 3 (2.34%) Ambari
7 3 (2.34%) Control-M
7 3 (2.34%) Data Guard
7 3 (2.34%) EMC NetWorker
7 3 (2.34%) Grafana
7 3 (2.34%) Hadoop YARN
7 3 (2.34%) QRadar
7 3 (2.34%) Tivoli
7 3 (2.34%) Tivoli Storage Manager
8 2 (1.56%) Failover Clustering
8 2 (1.56%) Netcool
8 2 (1.56%) Packer
9 1 (0.78%) Oracle Enterprise Manager
9 1 (0.78%) Oracle RMAN
Vendors
1 24 (18.75%) Oracle
2 18 (14.06%) Red Hat
3 16 (12.50%) VMware
4 13 (10.16%) Microsoft
5 8 (6.25%) EMC
5 8 (6.25%) Sybase
6 7 (5.47%) Citrix
7 6 (4.69%) HP
8 5 (3.91%) Bloomberg
8 5 (3.91%) Cisco
8 5 (3.91%) IBM
8 5 (3.91%) Refinitiv
8 5 (3.91%) Reuters
8 5 (3.91%) Splunk
9 4 (3.13%) Juniper
10 3 (2.34%) BMC
10 3 (2.34%) Cloudera
10 3 (2.34%) CyberArk
10 3 (2.34%) Databricks
10 3 (2.34%) Qualys