Period
to 25 January 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 25 January 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
25 Jan 2021
Same period 2020 Same period 2019
Rank 24 29 21
Rank change year-on-year +5 -8 -2
Contract jobs citing Linux 139 289 501
As % of all contract jobs advertised in the City of London 6.62% 5.92% 7.32%
As % of the Operating Systems category 40.17% 34.40% 37.11%
Number of daily rates quoted 128 228 375
Median daily rate £550 £550 £550
10th Percentile £411 £325 £409
90th Percentile £679 £704 £675
Central London median daily rate £550 £539 £550
% change year-on-year +2.09% -2.05% +4.76%
Number of hourly rates quoted 0 1 1
Median hourly rate - £15.00 £22.50
Median hourly rate % change year-on-year - -33.33% -
Central London median hourly rate - £22.50 £37.50
% change year-on-year - -40.00% +7.14%

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 346 840 1,350
As % of all contract IT jobs advertised in the City of London 16.48% 17.21% 19.73%
Number of daily rates quoted 266 649 1,022
Median daily rate £475 £450 £475
Median daily rate % change year-on-year +5.56% -5.26% -4.04%
10th Percentile £166 £150 £145
90th Percentile £650 £650 £638
Central London median daily rate £475 £430 £475
% change year-on-year +10.47% -9.47% -
Number of hourly rates quoted 5 28 48
Median hourly rate £22.50 £16.73 £18.70
Median hourly rate % change year-on-year +34.53% -10.56% +24.67%
10th Percentile £16.40 £12.36 £13.70
90th Percentile £23.00 £21.30 £25.50
Median hourly rate £22.50 £18.70 £18.70
% change year-on-year +20.32% - +16.88%

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 25 January 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 25 January 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 52 (37.41%) Java
2 50 (35.97%) Python
3 45 (32.37%) Banking
4 42 (30.22%) Unix
4 42 (30.22%) DevOps
5 41 (29.50%) Finance
6 37 (26.62%) AWS
6 37 (26.62%) Kubernetes
7 34 (24.46%) Agile Software Development
8 32 (23.02%) Oracle
9 31 (22.30%) Windows
10 30 (21.58%) Docker
11 29 (20.86%) Jenkins
12 28 (20.14%) Terraform
13 27 (19.42%) SQL
14 26 (18.71%) Spring
15 25 (17.99%) Investment Banking
16 22 (15.83%) Red Hat
16 22 (15.83%) Red Hat Enterprise Linux
17 21 (15.11%) TDD
17 21 (15.11%) VMware
18 20 (14.39%) Scrum
18 20 (14.39%) Git (software)
18 20 (14.39%) REST
19 19 (13.67%) Security Cleared
19 19 (13.67%) Migration
19 19 (13.67%) Ansible
20 18 (12.95%) IBM
20 18 (12.95%) JavaScript
20 18 (12.95%) Kafka

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 11 (7.91%) WebSphere
2 8 (5.76%) Confluence
3 7 (5.04%) Red Hat Fuse
4 6 (4.32%) Apache
4 6 (4.32%) JBoss
5 5 (3.60%) Elasticsearch
6 3 (2.16%) Apache Spark
6 3 (2.16%) SAS
7 2 (1.44%) nginx
7 2 (1.44%) Tomcat
7 2 (1.44%) WebLogic
7 2 (1.44%) WebSphere Application Server
8 1 (0.72%) Appian
8 1 (0.72%) Cloud Foundry
8 1 (0.72%) Jupyter
8 1 (0.72%) Liferay
8 1 (0.72%) Mule
8 1 (0.72%) OpenStack
8 1 (0.72%) Oracle SOA Suite
8 1 (0.72%) WordPress
Applications
1 4 (2.88%) Microsoft Excel
2 1 (0.72%) Adobe Illustrator
2 1 (0.72%) InVision
2 1 (0.72%) Microsoft Office
2 1 (0.72%) MS Visio
2 1 (0.72%) Photoshop
2 1 (0.72%) Sketch
2 1 (0.72%) Zeplin
Business Applications
1 3 (2.16%) SunGard Martini
2 2 (1.44%) Salerio
3 1 (0.72%) Kondor
3 1 (0.72%) Magento
3 1 (0.72%) Oracle Applications
3 1 (0.72%) Oracle EBS
3 1 (0.72%) Oracle EBS R12
Cloud Services
1 37 (26.62%) AWS
2 17 (12.23%) Azure
3 12 (8.63%) Amazon S3
4 10 (7.19%) Amazon EC2
4 10 (7.19%) OpenShift
5 8 (5.76%) AWS Lambda
5 8 (5.76%) GCP
5 8 (5.76%) Serverless
6 7 (5.04%) AWS CloudFormation
6 7 (5.04%) Virtual Private Cloud
7 5 (3.60%) Cloud Computing
8 4 (2.88%) PaaS
9 3 (2.16%) Amazon EKS
9 3 (2.16%) Amazon ELB
9 3 (2.16%) CloudFront
9 3 (2.16%) Datadog
9 3 (2.16%) IaaS
9 3 (2.16%) Route 53
10 2 (1.44%) Amazon SQS
10 2 (1.44%) AWS CodePipeline
Communications & Networking
1 13 (9.35%) Firewall
2 12 (8.63%) DNS
2 12 (8.63%) TCP/IP
3 9 (6.47%) HTTP
4 8 (5.76%) LAN
4 8 (5.76%) VPN
4 8 (5.76%) WAN
5 7 (5.04%) SSL
6 6 (4.32%) DHCP
6 6 (4.32%) Wireless
7 4 (2.88%) HTTPS
7 4 (2.88%) Multicast
8 3 (2.16%) FTP
8 3 (2.16%) Intrusion Detection
8 3 (2.16%) IPsec
8 3 (2.16%) Kerberos
9 2 (1.44%) AMQP
9 2 (1.44%) SAN
9 2 (1.44%) Wireshark
10 1 (0.72%) Unified Communications
Database & Business Intelligence
1 17 (12.23%) MySQL
2 16 (11.51%) Relational Database
3 14 (10.07%) Oracle Database
3 14 (10.07%) SQL Server
4 10 (7.19%) Data Warehouse
4 10 (7.19%) PostgreSQL
5 9 (6.47%) Amazon RDS
5 9 (6.47%) MongoDB
6 5 (3.60%) Amazon Aurora
6 5 (3.60%) Big Data
6 5 (3.60%) DB2
6 5 (3.60%) NoSQL
6 5 (3.60%) Oracle Database 11g
7 4 (2.88%) Oracle Database 12c
7 4 (2.88%) Redis
8 3 (2.16%) Flink
8 3 (2.16%) Hadoop
9 2 (1.44%) Apache Cassandra
9 2 (1.44%) Apache Hive
9 2 (1.44%) SQL Server Analysis Services
Development Applications
1 29 (20.86%) Jenkins
2 20 (14.39%) Git (software)
3 14 (10.07%) Maven
4 11 (7.91%) JIRA
5 6 (4.32%) Bitbucket
6 5 (3.60%) Artifactory
6 5 (3.60%) Atlassian Bamboo
7 4 (2.88%) GDB
7 4 (2.88%) GitLab
7 4 (2.88%) JUnit
7 4 (2.88%) Selenium
7 4 (2.88%) Subversion
8 3 (2.16%) FishEye
8 3 (2.16%) Gatling
8 3 (2.16%) GCC
8 3 (2.16%) Gradle
8 3 (2.16%) Hudson
8 3 (2.16%) jMock
8 3 (2.16%) Snyk
8 3 (2.16%) SonarQube
General
1 45 (32.37%) Banking
2 41 (29.50%) Finance
3 25 (17.99%) Investment Banking
4 12 (8.63%) Front Office
5 6 (4.32%) Retail
6 4 (2.88%) French Language
6 4 (2.88%) Public Sector
7 2 (1.44%) Advertising
7 2 (1.44%) Back Office
8 1 (0.72%) Automotive
8 1 (0.72%) Games
8 1 (0.72%) International Banking
8 1 (0.72%) Publishing
8 1 (0.72%) Telecoms
Job Titles
1 43 (30.94%) Developer
2 19 (13.67%) DevOps Engineer
3 17 (12.23%) Java Developer
4 12 (8.63%) Architect
5 10 (7.19%) DBA
5 10 (7.19%) Oracle DBA
6 9 (6.47%) Administrator
6 9 (6.47%) AWS DevOps
7 8 (5.76%) Senior Developer
7 8 (5.76%) Senior Java Developer
8 6 (4.32%) Analyst
8 6 (4.32%) AWS Engineer
8 6 (4.32%) Python Developer
8 6 (4.32%) Solutions Architect
9 5 (3.60%) Automation Engineer
9 5 (3.60%) AWS DevOps Engineer
9 5 (3.60%) Infrastructure Architect
9 5 (3.60%) Systems Administrator
10 4 (2.88%) C++ Developer
10 4 (2.88%) Software Engineer
Libraries, Frameworks & Software Standards
1 26 (18.71%) Spring
2 20 (14.39%) REST
3 18 (12.95%) Kafka
4 14 (10.07%) Spring Boot
4 14 (10.07%) Web Services
5 11 (7.91%) JMS
6 10 (7.19%) Middleware
7 9 (6.47%) AngularJS
7 9 (6.47%) HTML
7 9 (6.47%) XML
8 7 (5.04%) Elastic Stack
8 7 (5.04%) Hibernate
9 6 (4.32%) HTML5
10 5 (3.60%) Apache Camel
10 5 (3.60%) CSS
10 5 (3.60%) OSGi
10 5 (3.60%) WebSphere MQ
11 4 (2.88%) JDBC
11 4 (2.88%) Oracle GoldenGate
11 4 (2.88%) SOAP
Miscellaneous
1 10 (7.19%) Management Information System
2 9 (6.47%) Analytical Skills
2 9 (6.47%) Fixed Income
3 8 (5.76%) Grid Computing
3 8 (5.76%) Market Risk
4 7 (5.04%) Clustering
4 7 (5.04%) Credit Risk
5 6 (4.32%) Data Centre
5 6 (4.32%) Replication
6 5 (3.60%) Enterprise Software
6 5 (3.60%) Foreign Exchange (FX)
7 4 (2.88%) Self-Motivation
7 4 (2.88%) SWIFT
8 3 (2.16%) Blog
8 3 (2.16%) Cloud Native
8 3 (2.16%) Cyber Kill Chain
8 3 (2.16%) Linux Command Line
8 3 (2.16%) Private Cloud
9 2 (1.44%) Algorithms
9 2 (1.44%) Data Structures
Operating Systems
1 42 (30.22%) Unix
2 31 (22.30%) Windows
3 22 (15.83%) Red Hat Enterprise Linux
4 8 (5.76%) CentOS
4 8 (5.76%) Windows Server
5 5 (3.60%) Solaris
5 5 (3.60%) Windows Server 2012
6 4 (2.88%) Ubuntu
7 3 (2.16%) SUSE
7 3 (2.16%) Windows Server 2008
7 3 (2.16%) Windows Server 2016
7 3 (2.16%) Windows Server 2019
7 3 (2.16%) Windows XP
8 2 (1.44%) AIX
8 2 (1.44%) Debian
8 2 (1.44%) Windows 10
9 1 (0.72%) Mac OS
9 1 (0.72%) OpenWrt
9 1 (0.72%) VMS
Processes & Methodologies
1 42 (30.22%) DevOps
2 34 (24.46%) Agile Software Development
3 21 (15.11%) TDD
4 20 (14.39%) Scrum
5 19 (13.67%) Migration
6 17 (12.23%) Continuous Integration
7 16 (11.51%) Configuration Management
8 15 (10.79%) Microservices
8 15 (10.79%) OO
8 15 (10.79%) Performance Tuning
9 14 (10.07%) High Availability
9 14 (10.07%) Problem-Solving
10 11 (7.91%) SDLC
11 10 (7.19%) Infrastructure as Code
11 10 (7.19%) Low Latency
11 10 (7.19%) Open Source
12 9 (6.47%) Investment Management
12 9 (6.47%) SIEM
13 8 (5.76%) BDD
13 8 (5.76%) Test Automation
Programming Languages
1 52 (37.41%) Java
2 50 (35.97%) Python
3 27 (19.42%) SQL
4 18 (12.95%) JavaScript
5 15 (10.79%) C++
6 12 (8.63%) Bash Shell
6 12 (8.63%) PL/SQL
6 12 (8.63%) PowerShell
7 11 (7.91%) Shell Script
8 9 (6.47%) Java 8
8 9 (6.47%) Perl
9 6 (4.32%) C#
10 5 (3.60%) Go
10 5 (3.60%) Ruby
11 3 (2.16%) Groovy
11 3 (2.16%) PHP
11 3 (2.16%) TypeScript
11 3 (2.16%) VB
11 3 (2.16%) VBScript
12 2 (1.44%) ES6
Qualifications
1 19 (13.67%) Security Cleared
2 16 (11.51%) SC Cleared
3 7 (5.04%) Degree
4 4 (2.88%) RHCA
4 4 (2.88%) TOGAF Certification
5 3 (2.16%) Cisco Certification
5 3 (2.16%) CISSP
5 3 (2.16%) Computer Science Degree
5 3 (2.16%) DV Cleared
5 3 (2.16%) GCFA
6 2 (1.44%) (ISC)2 CCSP
6 2 (1.44%) AWS Certification
6 2 (1.44%) CCSP
6 2 (1.44%) CISM
6 2 (1.44%) CREST Certified
6 2 (1.44%) GCIA
6 2 (1.44%) GCIH
7 1 (0.72%) CompTIA Security+
7 1 (0.72%) VCDX
7 1 (0.72%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 3 (2.16%) NIST
1 3 (2.16%) QA
2 2 (1.44%) COBIT
2 2 (1.44%) GDPR
2 2 (1.44%) Sarbanes-Oxley
3 1 (0.72%) ISO 20022
3 1 (0.72%) JTAG
3 1 (0.72%) SEPA
3 1 (0.72%) SLA
System Software
1 30 (21.58%) Docker
2 14 (10.07%) VMware Infrastructure
3 11 (7.91%) Active Directory
4 8 (5.76%) VMware ESXi
5 6 (4.32%) vSphere
6 5 (3.60%) Oracle RAC
7 4 (2.88%) Apache ZooKeeper
8 2 (1.44%) etcd
8 2 (1.44%) Varnish
9 1 (0.72%) Gluster
9 1 (0.72%) HDFS
9 1 (0.72%) Virtual Machines
9 1 (0.72%) VMware NSX
Systems Management
1 37 (26.62%) Kubernetes
2 28 (20.14%) Terraform
3 19 (13.67%) Ansible
4 13 (9.35%) Puppet
5 9 (6.47%) Opscode Chef
6 7 (5.04%) Nagios
7 6 (4.32%) Consul
8 4 (2.88%) Enterprise Manager Cloud Control
8 4 (2.88%) Foglight
8 4 (2.88%) Salt
9 3 (2.16%) Docker Swarm
9 3 (2.16%) Grafana
9 3 (2.16%) HP Fortify
10 2 (1.44%) CSIRT
10 2 (1.44%) Norton AntiVirus
10 2 (1.44%) Oracle RMAN
10 2 (1.44%) Packer
11 1 (0.72%) logstash
11 1 (0.72%) OSSEC
11 1 (0.72%) SolarWinds Orion
Vendors
1 32 (23.02%) Oracle
2 22 (15.83%) Red Hat
3 21 (15.11%) VMware
4 18 (12.95%) IBM
5 15 (10.79%) Microsoft
6 12 (8.63%) Cisco
7 7 (5.04%) Splunk
8 5 (3.60%) Atlassian
8 5 (3.60%) Citrix
9 4 (2.88%) ArcSight
9 4 (2.88%) Google
9 4 (2.88%) Juniper
9 4 (2.88%) Qualys
9 4 (2.88%) Sybase
10 3 (2.16%) CyberArk
10 3 (2.16%) FIS
10 3 (2.16%) Hortonworks
10 3 (2.16%) Murex
10 3 (2.16%) SolarWinds
10 3 (2.16%) SunGard