Period
to 13 April 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 13 April 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
13 Apr 2021
Same period 2020 Same period 2019
Rank 36 26 21
Rank change year-on-year -10 -5 0
Contract jobs citing Linux 139 250 529
As % of all contract jobs advertised in the City of London 5.75% 6.16% 7.79%
As % of the Operating Systems category 41.99% 35.56% 39.54%
Number of daily rates quoted 102 185 383
10th Percentile £356 £357 £413
25th Percentile £453 £431 £488
Median daily rate (50th Percentile) £565 £550 £563
Median % change year-on-year +2.73% -2.22% +3.69%
75th Percentile £675 £638 £638
90th Percentile £700 £692 £688
Central London median daily rate £554 £550 £550
% change year-on-year +0.68% - +4.27%
Number of hourly rates quoted 0 1 2
Median hourly rate - £15.00 £35.00
Median % change year-on-year - -57.14% +40.00%
Central London median hourly rate - £37.50 £36.25
% change year-on-year - +3.45% +16.00%

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 331 703 1,338
As % of all contract IT jobs advertised in the City of London 13.69% 17.32% 19.69%
Number of daily rates quoted 250 536 1,003
10th Percentile £205 £150 £158
25th Percentile £397 £267 £325
Median daily rate (50th Percentile) £500 £450 £475
Median % change year-on-year +11.11% -5.26% -5.00%
75th Percentile £607 £575 £581
90th Percentile £700 £650 £650
Central London median daily rate £500 £450 £475
% change year-on-year +11.11% -5.26% -4.52%
Number of hourly rates quoted 3 17 30
Median hourly rate £23.00 £16.95 £20.25
Median % change year-on-year +35.69% -16.30% +8.87%
Central London median hourly rate £23.00 £18.70 £20.00
% change year-on-year +22.99% -6.50% +6.95%

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 13 April 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 13 April 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 48 (34.53%) Banking
2 46 (33.09%) Finance
2 46 (33.09%) Java
3 43 (30.94%) Python
4 40 (28.78%) Agile Software Development
5 38 (27.34%) Unix
5 38 (27.34%) DevOps
6 34 (24.46%) Windows
7 32 (23.02%) Docker
7 32 (23.02%) Kubernetes
8 28 (20.14%) AWS
8 28 (20.14%) Oracle
9 25 (17.99%) Jenkins
10 24 (17.27%) SQL
10 24 (17.27%) Spring
10 24 (17.27%) VMware
10 24 (17.27%) Terraform
11 23 (16.55%) Continuous Integration
12 22 (15.83%) Red Hat Enterprise Linux
12 22 (15.83%) Git (software)
12 22 (15.83%) Performance Tuning
12 22 (15.83%) Red Hat
13 21 (15.11%) Investment Banking
13 21 (15.11%) TDD
13 21 (15.11%) High Availability
14 19 (13.67%) Firewall
15 18 (12.95%) Low Latency
15 18 (12.95%) Security Cleared
16 17 (12.23%) VMware Infrastructure
16 17 (12.23%) Ansible

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 (6.47%) Red Hat Fuse
1 9 (6.47%) WebSphere
2 8 (5.76%) Apache
3 5 (3.60%) Apache Spark
3 5 (3.60%) Confluence
3 5 (3.60%) Drupal
3 5 (3.60%) Elasticsearch
4 3 (2.16%) Apache Airflow
4 3 (2.16%) WebLogic
5 2 (1.44%) JBoss
5 2 (1.44%) SAS
5 2 (1.44%) Tomcat
6 1 (0.72%) Cloud Foundry
6 1 (0.72%) Mule
6 1 (0.72%) nginx
6 1 (0.72%) OpenStack
6 1 (0.72%) SharePoint
6 1 (0.72%) uWSGI
6 1 (0.72%) WebSphere Application Server
Applications
1 4 (2.88%) Microsoft Excel
2 1 (0.72%) Microsoft Office
Business Applications
1 5 (3.60%) Eikon
1 5 (3.60%) Refinitiv Enterprise Platform
2 2 (1.44%) Salerio
3 1 (0.72%) ION MarketView
3 1 (0.72%) Kondor
3 1 (0.72%) Oracle Applications
3 1 (0.72%) Oracle EBS
3 1 (0.72%) Oracle EBS R12
Cloud Services
1 28 (20.14%) AWS
2 16 (11.51%) Azure
3 10 (7.19%) Amazon S3
4 8 (5.76%) Amazon EC2
5 7 (5.04%) Virtual Private Cloud
6 6 (4.32%) AWS Lambda
6 6 (4.32%) Serverless
7 5 (3.60%) OpenShift
8 4 (2.88%) AWS CloudFormation
9 3 (2.16%) Amazon EKS
9 3 (2.16%) Cloud Computing
10 2 (1.44%) Amazon SQS
10 2 (1.44%) AWS Elastic Beanstalk
10 2 (1.44%) CloudFront
10 2 (1.44%) Datadog
10 2 (1.44%) GCP
10 2 (1.44%) IaaS
10 2 (1.44%) PaaS
10 2 (1.44%) Route 53
11 1 (0.72%) Apigee
Communications & Networking
1 19 (13.67%) Firewall
2 11 (7.91%) LAN
2 11 (7.91%) WAN
3 10 (7.19%) VPN
4 9 (6.47%) DNS
4 9 (6.47%) Wireless
5 6 (4.32%) DHCP
5 6 (4.32%) TCP/IP
6 5 (3.60%) Multicast
6 5 (3.60%) SSL
7 4 (2.88%) HTTP
8 3 (2.16%) HTTPS
8 3 (2.16%) Network Security
8 3 (2.16%) Wi-Fi
8 3 (2.16%) Wireshark
9 2 (1.44%) Cisco ASA
9 2 (1.44%) F5 BIG-IP GTM
9 2 (1.44%) F5 BIG-IP LTM
9 2 (1.44%) Intrusion Detection
9 2 (1.44%) UPnP
Database & Business Intelligence
1 14 (10.07%) MySQL
2 13 (9.35%) Oracle Database
3 12 (8.63%) SQL Server
4 11 (7.91%) MongoDB
5 10 (7.19%) Relational Database
6 8 (5.76%) Amazon RDS
6 8 (5.76%) NoSQL
6 8 (5.76%) PostgreSQL
7 7 (5.04%) DB2
8 6 (4.32%) Amazon DynamoDB
8 6 (4.32%) Data Warehouse
9 5 (3.60%) Hadoop
9 5 (3.60%) Oracle Database 12c
10 4 (2.88%) Amazon Aurora
10 4 (2.88%) Apache Hive
10 4 (2.88%) Big Data
10 4 (2.88%) SQL Server Analysis Services
10 4 (2.88%) SQL Server Integration Services
10 4 (2.88%) SQL Server Reporting Services
11 3 (2.16%) Spark SQL
Development Applications
1 25 (17.99%) Jenkins
2 22 (15.83%) Git (software)
3 12 (8.63%) Maven
4 8 (5.76%) JIRA
5 5 (3.60%) Artifactory
5 5 (3.60%) GitLab
6 4 (2.88%) Bitbucket
6 4 (2.88%) GDB
7 3 (2.16%) Selenium
7 3 (2.16%) Snyk
7 3 (2.16%) SonarQube
7 3 (2.16%) Vagrant
8 2 (1.44%) Atlassian Bamboo
8 2 (1.44%) Gatling
8 2 (1.44%) Geb
8 2 (1.44%) Octopus Deploy
8 2 (1.44%) Oracle APEX
8 2 (1.44%) Spock
8 2 (1.44%) Subversion
8 2 (1.44%) TeamCity
General
1 48 (34.53%) Banking
2 46 (33.09%) Finance
3 21 (15.11%) Investment Banking
4 11 (7.91%) Front Office
5 3 (2.16%) Back Office
5 3 (2.16%) Public Sector
5 3 (2.16%) Retail
6 2 (1.44%) Games
6 2 (1.44%) International Banking
6 2 (1.44%) Telecoms
7 1 (0.72%) Advertising
7 1 (0.72%) Legal
7 1 (0.72%) Publishing
Job Titles
1 38 (27.34%) Developer
2 19 (13.67%) DevOps Engineer
2 19 (13.67%) Java Developer
3 17 (12.23%) Architect
4 16 (11.51%) Senior Developer
5 12 (8.63%) DBA
5 12 (8.63%) Senior Java Developer
6 11 (7.91%) Administrator
6 11 (7.91%) Oracle DBA
7 10 (7.19%) Solutions Architect
8 9 (6.47%) Infrastructure Architect
9 8 (5.76%) AWS DevOps
9 8 (5.76%) Java Architect
9 8 (5.76%) Java Solutions Architect
10 7 (5.04%) Data Engineer
10 7 (5.04%) Support Engineer
11 5 (3.60%) C++ Developer
11 5 (3.60%) Market Data Support Engineer
11 5 (3.60%) Software Engineer
11 5 (3.60%) Systems Administrator
Libraries, Frameworks & Software Standards
1 24 (17.27%) Spring
2 15 (10.79%) HTML
3 13 (9.35%) Middleware
3 13 (9.35%) REST
4 12 (8.63%) Spring Boot
5 11 (7.91%) AngularJS
6 10 (7.19%) Kafka
7 9 (6.47%) Apache Camel
7 9 (6.47%) Hibernate
7 9 (6.47%) JMS
8 8 (5.76%) Ajax
8 8 (5.76%) Elastic Stack
8 8 (5.76%) GWT
8 8 (5.76%) HTML5
8 8 (5.76%) JDBC
8 8 (5.76%) jQuery
8 8 (5.76%) JSF
8 8 (5.76%) OSGi
8 8 (5.76%) SOAP
8 8 (5.76%) WebSphere MQ
Miscellaneous
1 11 (7.91%) Grid Computing
2 10 (7.19%) Clustering
2 10 (7.19%) Data Centre
2 10 (7.19%) Foreign Exchange (FX)
3 9 (6.47%) Credit Risk
3 9 (6.47%) Enterprise Software
3 9 (6.47%) Market Risk
4 8 (5.76%) Replication
5 7 (5.04%) Management Information System
6 6 (4.32%) User Experience
7 5 (3.60%) Client/Server
8 4 (2.88%) Analytical Skills
8 4 (2.88%) SWIFT
9 3 (2.16%) Cyber Kill Chain
10 2 (1.44%) Derivative
10 2 (1.44%) Embedded Systems
10 2 (1.44%) Fixed Income
10 2 (1.44%) Linux Command Line
10 2 (1.44%) Mobile Payment
10 2 (1.44%) Robotics
Operating Systems
1 38 (27.34%) Unix
2 34 (24.46%) Windows
3 22 (15.83%) Red Hat Enterprise Linux
4 14 (10.07%) Windows Server
5 5 (3.60%) CentOS
5 5 (3.60%) Solaris
5 5 (3.60%) Ubuntu
6 4 (2.88%) Windows Server 2012
7 3 (2.16%) Windows XP
8 2 (1.44%) Mac OS
8 2 (1.44%) OpenWrt
8 2 (1.44%) Windows 10
8 2 (1.44%) Windows Server 2008
8 2 (1.44%) Windows Server 2016
8 2 (1.44%) Windows Server 2019
9 1 (0.72%) Debian
9 1 (0.72%) SUSE
9 1 (0.72%) VMS
Processes & Methodologies
1 40 (28.78%) Agile Software Development
2 38 (27.34%) DevOps
3 23 (16.55%) Continuous Integration
4 22 (15.83%) Performance Tuning
5 21 (15.11%) High Availability
5 21 (15.11%) TDD
6 18 (12.95%) Low Latency
7 17 (12.23%) Scrum
8 15 (10.79%) Configuration Management
9 14 (10.07%) Microservices
10 12 (8.63%) Capacity Planning
10 12 (8.63%) Migration
10 12 (8.63%) Open Source
10 12 (8.63%) Risk Management
11 11 (7.91%) SDLC
11 11 (7.91%) Test Automation
12 10 (7.19%) Continuous Improvement
12 10 (7.19%) Data Analysis
12 10 (7.19%) Disaster Recovery
12 10 (7.19%) Visualisation
Programming Languages
1 46 (33.09%) Java
2 43 (30.94%) Python
3 24 (17.27%) SQL
4 15 (10.79%) JavaScript
5 12 (8.63%) Bash Shell
5 12 (8.63%) PowerShell
6 11 (7.91%) Shell Script
7 10 (7.19%) Java 8
8 9 (6.47%) PL/SQL
9 8 (5.76%) C++
10 5 (3.60%) C#
10 5 (3.60%) Go
10 5 (3.60%) Perl
11 4 (2.88%) Ruby
11 4 (2.88%) VBScript
12 3 (2.16%) Groovy
12 3 (2.16%) VB
13 2 (1.44%) R
13 2 (1.44%) sed
13 2 (1.44%) TypeScript
Qualifications
1 18 (12.95%) Security Cleared
2 16 (11.51%) SC Cleared
3 8 (5.76%) Degree
4 5 (3.60%) Cisco Certification
4 5 (3.60%) CISSP
4 5 (3.60%) RHCA
4 5 (3.60%) TOGAF Certification
5 3 (2.16%) CCNP
5 3 (2.16%) CISM
5 3 (2.16%) CREST Certified
5 3 (2.16%) DV Cleared
5 3 (2.16%) GCFA
5 3 (2.16%) GCIH
5 3 (2.16%) GIAC
6 2 (1.44%) (ISC)2 CCSP
6 2 (1.44%) CCSP
6 2 (1.44%) CEH
6 2 (1.44%) Computer Science Degree
6 2 (1.44%) GCIA
7 1 (0.72%) MCSE
Quality Assurance & Compliance
1 3 (2.16%) NIST
2 2 (1.44%) COBIT
2 2 (1.44%) GDPR
2 2 (1.44%) JTAG
2 2 (1.44%) QA
2 2 (1.44%) Sarbanes-Oxley
2 2 (1.44%) SEPA
System Software
1 32 (23.02%) Docker
2 17 (12.23%) VMware Infrastructure
3 11 (7.91%) Active Directory
4 10 (7.19%) VMware ESXi
5 9 (6.47%) vSphere
6 6 (4.32%) Oracle RAC
7 4 (2.88%) HDFS
8 2 (1.44%) Apache ZooKeeper
8 2 (1.44%) VirtualBox
9 1 (0.72%) BitLocker
9 1 (0.72%) Gluster
9 1 (0.72%) Virtual Machines
9 1 (0.72%) VMware NSX
Systems Management
1 32 (23.02%) Kubernetes
2 24 (17.27%) Terraform
3 17 (12.23%) Ansible
4 12 (8.63%) Puppet
5 6 (4.32%) Grafana
5 6 (4.32%) Opscode Chef
6 5 (3.60%) Enterprise Manager Cloud Control
7 4 (2.88%) Foglight
7 4 (2.88%) Nagios
7 4 (2.88%) Salt
8 3 (2.16%) Ambari
8 3 (2.16%) Consul
8 3 (2.16%) Hadoop YARN
8 3 (2.16%) HP Fortify
9 2 (1.44%) Control-M
9 2 (1.44%) CSIRT
9 2 (1.44%) Docker Swarm
9 2 (1.44%) Oracle RMAN
9 2 (1.44%) Packer
10 1 (0.72%) Prometheus
Vendors
1 28 (20.14%) Oracle
2 24 (17.27%) VMware
3 22 (15.83%) Red Hat
4 17 (12.23%) Microsoft
5 15 (10.79%) Cisco
5 15 (10.79%) IBM
6 12 (8.63%) Citrix
7 7 (5.04%) Juniper
8 5 (3.60%) Bloomberg
8 5 (3.60%) Refinitiv
8 5 (3.60%) Reuters
9 4 (2.88%) Cloudera
9 4 (2.88%) SolarWinds
9 4 (2.88%) Splunk
10 3 (2.16%) Hortonworks
11 2 (1.44%) ArcSight
11 2 (1.44%) Delphix
11 2 (1.44%) F5
11 2 (1.44%) Palo Alto
11 2 (1.44%) Solace