Period
to 21 November 2017

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 21 November 2017 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
21 Nov 2017
Same period 2016 Same period 2015
Rank 18 12 15
Rank change year-on-year -6 +3 +1
Contract jobs citing Linux 604 653 811
As % of all contract IT jobs advertised in the City of London 8.45% 9.82% 8.95%
As % of the Operating Systems category 42.00% 46.31% 40.09%
Number of daily rates quoted 517 532 678
City of London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +2.70%
10th Percentile £388 £363 £325
90th Percentile £745 £663 £675
Central London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 0 5 18
City of London median hourly rate - £27.50 £36.25
Median hourly rate % change year-on-year - -24.14% +6.06%
Central London median hourly rate - £27.50 £36.25
% change year-on-year - -24.14% +6.06%

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 1438 1410 2023
As % of all contract IT jobs advertised in the City of London 20.11% 21.19% 22.33%
Number of daily rates quoted 1136 1108 1601
City of London median daily rate £478 £463 £438
Median daily rate % change year-on-year +3.24% +5.71% +6.71%
10th Percentile £225 £275 £225
90th Percentile £675 £625 £625
Central London median daily rate £475 £450 £428
% change year-on-year +5.56% +5.26% +6.88%
Number of hourly rates quoted 48 29 63
City of London median hourly rate £15.75 £19.00 £19.50
Median hourly rate % change year-on-year -17.11% -2.56% +14.71%
10th Percentile £11.25 £11.25 £12.04
90th Percentile £26.28 £36.50 £36.60
Central London median hourly rate £17.00 £17.50 £18.00
% change year-on-year -2.86% -2.78% +12.50%

Linux
Job Vacancy Trend in the City of London

Job postings citing Linux as a percentage 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

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Linux in the City of London.

Contractor daily rate trend for Linux in the City of London

Linux
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Linux in the City of London over the 6 months to 21 November 2017.

Contractor daily rate histogram for Linux in the City of London

Linux
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Linux in the City of London.

Contractor hourly rate trend for Linux in the City of London

For the 6 months to 21 November 2017, IT contractor jobs citing Linux also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for Linux.

1 220 (36.42%) Java
2 203 (33.61%) Finance
3 193 (31.95%) Unix
4 174 (28.81%) DevOps
5 161 (26.66%) Windows
6 159 (26.32%) Agile Software Development
7 152 (25.17%) Amazon AWS
8 150 (24.83%) Python
9 137 (22.68%) Banking
10 135 (22.35%) Ansible
11 115 (19.04%) SQL
12 93 (15.40%) Red Hat Enterprise Linux
13 90 (14.90%) Docker
14 88 (14.57%) C++
15 86 (14.24%) Puppet
16 82 (13.58%) Bash Shell
17 79 (13.08%) Git (software)
18 78 (12.91%) JavaScript
19 77 (12.75%) Front Office
20 75 (12.42%) Jenkins
21 73 (12.09%) Multithreading
21 73 (12.09%) Foreign Exchange (FX)
22 68 (11.26%) Red Hat
23 66 (10.93%) Terraform
24 64 (10.60%) VMware
25 63 (10.43%) Configuration Management
26 62 (10.26%) Oracle
27 61 (10.10%) Shell Script
28 58 (9.60%) Continuous Integration
29 56 (9.27%) Low Latency

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 47 (7.78%) Apache
2 32 (5.30%) Tomcat
3 21 (3.48%) JBoss
4 20 (3.31%) Apache Spark
5 16 (2.65%) Elasticsearch
6 15 (2.48%) nginx
7 11 (1.82%) WebSphere
8 10 (1.66%) OpenStack
9 9 (1.49%) IIS
10 7 (1.16%) Confluence
10 7 (1.16%) Jetty
10 7 (1.16%) MQSeries
11 6 (0.99%) WildFly
12 5 (0.83%) Drupal
12 5 (0.83%) Mule
12 5 (0.83%) WordPress
13 4 (0.66%) Apache Solr
13 4 (0.66%) WebLogic
14 3 (0.50%) Oracle Coherence
14 3 (0.50%) SAS
Applications
1 4 (0.66%) MS Visio
2 3 (0.50%) Microsoft Office
3 1 (0.17%) Chatbot
3 1 (0.17%) Photoshop
3 1 (0.17%) Stata
Business Applications
1 22 (3.64%) ION MarketView
2 12 (1.99%) Temenos T24
3 5 (0.83%) BusinessWorks
4 4 (0.66%) Kondor
5 2 (0.33%) RMDS
6 1 (0.17%) MetaTrader
6 1 (0.17%) Payment Gateway
6 1 (0.17%) thinkFolio
Cloud Services
1 152 (25.17%) Amazon AWS
2 49 (8.11%) Microsoft Azure
3 19 (3.15%) AWS CloudFormation
4 17 (2.81%) IaaS
5 13 (2.15%) Amazon EC2
6 12 (1.99%) GitHub
6 12 (1.99%) Google Cloud Platform
6 12 (1.99%) PaaS
7 10 (1.66%) Amazon S3
8 9 (1.49%) Cloud Computing
9 8 (1.32%) OpenShift
10 7 (1.16%) Route 53
10 7 (1.16%) Virtual Private Cloud
11 6 (0.99%) Amazon CloudWatch
11 6 (0.99%) Heroku
11 6 (0.99%) SaaS
12 5 (0.83%) Amazon ELB
12 5 (0.83%) Amazon SQS
13 4 (0.66%) Google Compute Engine
14 3 (0.50%) Office 365
Communications & Networking
1 48 (7.95%) TCP/IP
2 37 (6.13%) HTTP
3 35 (5.79%) Firewall
4 27 (4.47%) DNS
5 23 (3.81%) SSL
6 19 (3.15%) SAN
7 11 (1.82%) Network Security
8 8 (1.32%) DHCP
8 8 (1.32%) LDAP
8 8 (1.32%) NAS
9 7 (1.16%) Intranet
10 6 (0.99%) FTP
10 6 (0.99%) HTTPS
10 6 (0.99%) LAN
11 5 (0.83%) BIG-IP
11 5 (0.83%) Internet
11 5 (0.83%) SMTP
11 5 (0.83%) VLAN
12 4 (0.66%) SSH
12 4 (0.66%) Wireshark
Database & Business Intelligence
1 56 (9.27%) MySQL
2 38 (6.29%) KDB
3 37 (6.13%) Relational Database
3 37 (6.13%) SQL Server
4 33 (5.46%) Big Data
5 29 (4.80%) MongoDB
6 28 (4.64%) Hadoop
7 24 (3.97%) PostgreSQL
8 18 (2.98%) RDBMS
9 16 (2.65%) HBase
10 15 (2.48%) NoSQL
11 12 (1.99%) Apache Cassandra
12 9 (1.49%) Data Warehouse
13 8 (1.32%) Amazon RDS
14 7 (1.16%) Apache Hive
14 7 (1.16%) Oracle Database
15 6 (0.99%) Kdb+
16 5 (0.83%) Sqoop
16 5 (0.83%) Sybase ASE
17 4 (0.66%) SQL Server Integration Services
Development Applications
1 79 (13.08%) Git (software)
2 75 (12.42%) Jenkins
3 42 (6.95%) Maven
4 31 (5.13%) Subversion
5 27 (4.47%) TeamCity
6 22 (3.64%) Gradle
7 21 (3.48%) Cucumber
7 21 (3.48%) JIRA
8 15 (2.48%) JUnit
9 11 (1.82%) Bitbucket
9 11 (1.82%) Selenium
10 10 (1.66%) gulp
11 9 (1.49%) Sonatype Nexus
12 8 (1.32%) webpack
13 7 (1.16%) GitLab
13 7 (1.16%) Mockito
14 6 (0.99%) Artifactory
14 6 (0.99%) Grunt
14 6 (0.99%) JMeter
15 5 (0.83%) WebDriver
General
1 203 (33.61%) Finance
2 137 (22.68%) Banking
3 77 (12.75%) Front Office
4 39 (6.46%) Investment Banking
5 19 (3.15%) Retail Banking
6 15 (2.48%) Financial Institution
7 11 (1.82%) Telecoms
8 10 (1.66%) Back Office
9 9 (1.49%) Marketing
10 8 (1.32%) Retail
11 6 (0.99%) International Banking
11 6 (0.99%) Publishing
12 5 (0.83%) Legal
13 4 (0.66%) Advertising
13 4 (0.66%) Law
14 3 (0.50%) Digital Economy
14 3 (0.50%) Retail Finance
15 2 (0.33%) German Language
16 1 (0.17%) Electronics
16 1 (0.17%) French Language
Job Titles
1 235 (38.91%) Developer
2 108 (17.88%) Java Developer
3 104 (17.22%) DevOps Engineer
4 69 (11.42%) Senior Developer
5 52 (8.61%) Senior Java Developer
6 49 (8.11%) Linux Engineer
7 46 (7.62%) AWS Engineer
7 46 (7.62%) C++ Developer
8 41 (6.79%) Analyst
9 37 (6.13%) Administrator
9 37 (6.13%) AWS DevOps
10 34 (5.63%) AWS DevOps Engineer
11 26 (4.30%) Electronic Trading Developer
12 23 (3.81%) Electronic Trading Java Developer
12 23 (3.81%) Systems Administrator
13 22 (3.64%) Infrastructure Engineer
13 22 (3.64%) Linux/Unix DevOps
14 21 (3.48%) Linux DevOps Engineer
14 21 (3.48%) Senior DevOps
15 19 (3.15%) Architect
Libraries, Frameworks & Software Standards
1 53 (8.77%) FIX Protocol
1 53 (8.77%) HTML
2 47 (7.78%) Web Services
3 44 (7.28%) TIBCO EMS
3 44 (7.28%) XML
4 41 (6.79%) Middleware
5 34 (5.63%) RESTful
6 32 (5.30%) REST
7 31 (5.13%) Kafka
8 29 (4.80%) CSS
8 29 (4.80%) HTML5
8 29 (4.80%) Spring
9 27 (4.47%) JSON
10 24 (3.97%) SOAP
11 23 (3.81%) .NET
11 23 (3.81%) JMS
12 20 (3.31%) AngularJS
13 19 (3.15%) jQuery
14 18 (2.98%) Node.js
15 17 (2.81%) Elastic Stack
Miscellaneous
1 73 (12.09%) Foreign Exchange (FX)
2 52 (8.61%) Analytical Skills
3 36 (5.96%) Data Structures
4 26 (4.30%) Computer Science
5 24 (3.97%) Data Centre
5 24 (3.97%) Equities
6 23 (3.81%) Algorithms
7 20 (3.31%) Fixed Income
8 19 (3.15%) Greenfield Project
9 14 (2.32%) Derivative
10 12 (1.99%) Public Cloud
11 11 (1.82%) Linux Command Line
11 11 (1.82%) SWIFT
12 10 (1.66%) Credit Risk
12 10 (1.66%) Enterprise Software
12 10 (1.66%) Fintech
12 10 (1.66%) Private Cloud
12 10 (1.66%) Virtual Team
13 8 (1.32%) Clustering
14 7 (1.16%) Management Information System
Operating Systems
1 193 (31.95%) Unix
2 161 (26.66%) Windows
3 93 (15.40%) Red Hat Enterprise Linux
4 51 (8.44%) Solaris
5 47 (7.78%) Windows Server
6 25 (4.14%) CentOS
7 23 (3.81%) Ubuntu
8 15 (2.48%) Windows Server 2012
9 12 (1.99%) Windows Server 2008
10 9 (1.49%) AIX
11 7 (1.16%) Debian
12 4 (0.66%) CoreOS
12 4 (0.66%) SUSE
12 4 (0.66%) Windows 7
13 3 (0.50%) Mac OS X
13 3 (0.50%) Oracle Linux
14 2 (0.33%) HPUX
14 2 (0.33%) VMS
14 2 (0.33%) Windows Server 2003
14 2 (0.33%) Windows Vista
Processes & Methodologies
1 174 (28.81%) DevOps
2 159 (26.32%) Agile Software Development
3 73 (12.09%) Multithreading
4 63 (10.43%) Configuration Management
5 58 (9.60%) Continuous Integration
6 56 (9.27%) Low Latency
7 55 (9.11%) Electronic Trading
8 44 (7.28%) TDD
9 43 (7.12%) Analytics
10 39 (6.46%) Open Source
10 39 (6.46%) Software Engineering
11 37 (6.13%) OO
12 36 (5.96%) Scrum
13 35 (5.79%) SDLC
14 34 (5.63%) Test Automation
15 33 (5.46%) Continuous Delivery
16 31 (5.13%) Migration
17 29 (4.80%) Integration Testing
18 28 (4.64%) Algorithmic Trading
19 27 (4.47%) E-Commerce
Programming Languages
1 220 (36.42%) Java
2 150 (24.83%) Python
3 115 (19.04%) SQL
4 88 (14.57%) C++
5 82 (13.58%) Bash Shell
6 78 (12.91%) JavaScript
7 61 (10.10%) Shell Script
8 55 (9.11%) Perl
9 46 (7.62%) Ruby
10 35 (5.79%) PowerShell
11 33 (5.46%) C#
12 28 (4.64%) PHP
13 21 (3.48%) PL/SQL
14 16 (2.65%) C
15 14 (2.32%) Scala
16 13 (2.15%) Groovy
17 9 (1.49%) Go
17 9 (1.49%) TypeScript
18 8 (1.32%) ES6
18 8 (1.32%) R
Qualifications
1 49 (8.11%) Degree
2 25 (4.14%) Security Cleared
3 22 (3.64%) PhD
4 16 (2.65%) Computer Science Degree
5 15 (2.48%) SC Cleared
6 8 (1.32%) GIAC
6 8 (1.32%) RHCE
6 8 (1.32%) SANS
7 7 (1.16%) AWS Certification
7 7 (1.16%) GCIA
7 7 (1.16%) GCIH
8 6 (0.99%) CISSP
9 4 (0.66%) Cisco Certification
9 4 (0.66%) DV Cleared
9 4 (0.66%) ITIL Certification
9 4 (0.66%) Microsoft Certification
10 3 (0.50%) CISA
10 3 (0.50%) CISM
10 3 (0.50%) RHCA
11 2 (0.33%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 20 (3.31%) QA
2 17 (2.81%) MiFID
3 9 (1.49%) ISO/IEC 27001
4 7 (1.16%) NIST 800
5 6 (0.99%) GCP
6 4 (0.66%) PCI DSS
7 3 (0.50%) SLA
8 2 (0.33%) AS 2805
8 2 (0.33%) GDPR
8 2 (0.33%) ISO 8583
8 2 (0.33%) TARGET2
9 1 (0.17%) Sarbanes-Oxley
System Software
1 90 (14.90%) Docker
2 21 (3.48%) VMware Infrastructure
3 19 (3.15%) Active Directory
4 11 (1.82%) HDFS
4 11 (1.82%) Virtual Machines
5 10 (1.66%) Hyper-V
5 10 (1.66%) VMware ESXi
6 9 (1.49%) vCloud
7 8 (1.32%) Apache ZooKeeper
7 8 (1.32%) LXC
8 6 (0.99%) KVM
9 5 (0.83%) iptables
9 5 (0.83%) NFS
9 5 (0.83%) vSphere
10 4 (0.66%) Apache Flume
10 4 (0.66%) Varnish
10 4 (0.66%) XenServer
11 3 (0.50%) etcd
12 2 (0.33%) RHEV
12 2 (0.33%) VirtualBox
Systems Management
1 135 (22.35%) Ansible
2 86 (14.24%) Puppet
3 66 (10.93%) Terraform
4 47 (7.78%) Kubernetes
5 45 (7.45%) Opscode Chef
6 18 (2.98%) Grafana
7 14 (2.32%) Packer
8 13 (2.15%) Kibana
9 12 (1.99%) Docker Swarm
10 11 (1.82%) Nagios
10 11 (1.82%) Prometheus
11 8 (1.32%) logstash
11 8 (1.32%) McAfee ePO
12 6 (0.99%) Salt
13 5 (0.83%) NetBackup
14 4 (0.66%) HAProxy
14 4 (0.66%) Mesos
14 4 (0.66%) Nessus
14 4 (0.66%) Oracle ZFS
14 4 (0.66%) SCCM
Vendors
1 68 (11.26%) Red Hat
2 64 (10.60%) VMware
3 62 (10.26%) Oracle
4 54 (8.94%) TIBCO
5 44 (7.28%) Microsoft
5 44 (7.28%) Sybase
6 40 (6.62%) IBM
7 26 (4.30%) Cisco
8 24 (3.97%) ION Trading
9 15 (2.48%) Splunk
10 14 (2.32%) Google
10 14 (2.32%) McAfee
10 14 (2.32%) SaltStack
11 11 (1.82%) CheckPoint
11 11 (1.82%) HP
11 11 (1.82%) Temenos
12 10 (1.66%) Bloomberg
12 10 (1.66%) Dell
13 9 (1.49%) Citrix
13 9 (1.49%) Reuters