The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Linux skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Linux over the 3 months to 23 May 2017 with a comparison to the same period in the previous 2 years.

Linux
London / City of London
3 months to
23 May 2017
Same period 2016 Same period 2015
Rank 12 13 15
Rank change year-on-year +1 +2  
Permanent jobs citing Linux 713 796 1115
As % of all permanent IT jobs advertised in the City of London 13.65% 12.06% 11.01%
As % of the Operating Systems category 51.33% 45.41% 44.16%
Number of salaries quoted 640 719 984
Median salary £60,000 £60,000 £55,000
Median salary % change year-on-year - +9.09%  
90% offered a salary of more than £35,000 £37,500 £37,500
10% offered a salary of more than £92,500 £82,500 £75,000
UK excluding London median salary £42,500 £42,500 £41,000
% change year-on-year - +3.65%  

Linux is in the operating system skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for operating system skills.

Operating System Skills
City of London
Permanent job vacancies with a requirement for operating system skills 1389 1753 2525
As % of all permanent IT job vacancies advertised in the City of London 26.59% 26.56% 24.94%
Number of salaries quoted 1237 1607 2207
Median salary £52,500 £52,500 £49,000
Median salary % change year-on-year - +7.14%  
90% offered a salary of more than £30,000 £30,000 £30,000
10% offered a salary of more than £85,000 £70,000 £77,500
UK excluding London median salary £37,500 £37,500 £37,500

Linux
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Linux as a proportion of all permanent or contract IT jobs with a match in the Operating Systems category.

Job vacancy trend for Linux in the City of London

Linux
Salary Trend in the City of London

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

Salary trend for Linux in the City of London

Linux
Salary Histogram in the City of London

The salary distribution of IT jobs citing Linux in the City of London over the 3 months to 23 May 2017.

Salary histogram for Linux in the City of London

For the 6 months to 23 May 2017, IT jobs citing Linux also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for Linux.

1 522 (38.72%) Finance
2 488 (36.20%) Windows
3 452 (33.53%) Python
4 384 (28.49%) Unix
5 379 (28.12%) Java
6 373 (27.67%) SQL
7 279 (20.70%) DevOps
8 256 (18.99%) Puppet
9 228 (16.91%) Agile Software Development
10 219 (16.25%) Banking
11 214 (15.88%) Amazon AWS
12 210 (15.58%) Red Hat
13 191 (14.17%) Red Hat Enterprise Linux
13 191 (14.17%) Degree
14 186 (13.80%) Bash Shell
14 186 (13.80%) JavaScript
15 185 (13.72%) Ansible
16 184 (13.65%) Jenkins
17 182 (13.50%) Oracle
18 171 (12.69%) Perl
19 170 (12.61%) C++
19 170 (12.61%) MySQL
20 168 (12.46%) VMware
21 154 (11.42%) Opscode Chef
22 150 (11.13%) HTML
23 149 (11.05%) Fintech
24 146 (10.83%) Docker
25 142 (10.53%) Git (software)
26 134 (9.94%) Microsoft
27 130 (9.64%) Configuration Management

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
1 115 (8.53%) Apache
2 71 (5.27%) Tomcat
3 57 (4.23%) IIS
4 32 (2.37%) JBoss
5 30 (2.23%) Elasticsearch
6 28 (2.08%) nginx
7 26 (1.93%) Apache Spark
8 25 (1.85%) OpenStack
9 22 (1.63%) WebLogic
10 18 (1.34%) MS Exchange
10 18 (1.34%) WebSphere
11 15 (1.11%) Confluence
12 14 (1.04%) CMS
13 13 (0.96%) WordPress
14 10 (0.74%) BizTalk Server
14 10 (0.74%) Exchange Server 2010
15 9 (0.67%) Drupal
16 8 (0.59%) Alfresco
16 8 (0.59%) Apache Pig
17 7 (0.52%) Cloud Foundry
Applications
1 11 (0.82%) Microsoft Office
2 7 (0.52%) Photoshop
3 6 (0.45%) Microsoft Excel
4 4 (0.30%) Microsoft PowerPoint
5 1 (0.074%) GNU Octave
5 1 (0.074%) MS Visio
Business Applications
1 7 (0.52%) Magento
2 4 (0.30%) Sage X3
2 4 (0.30%) SAP BPC
3 2 (0.15%) CSG Singleview
3 2 (0.15%) Dynamics CRM
3 2 (0.15%) Eze OMS
3 2 (0.15%) thinkFolio
4 1 (0.074%) Bloomberg TOMS
4 1 (0.074%) LatentZero
4 1 (0.074%) Markit EDM
4 1 (0.074%) OpenLink RightAngle
4 1 (0.074%) Oracle Applications
4 1 (0.074%) PeopleSoft CRM
4 1 (0.074%) RMDS
4 1 (0.074%) Salerio
4 1 (0.074%) SAP Oil and Gas
4 1 (0.074%) SAP SRM
4 1 (0.074%) Sentinel
Cloud Services
1 214 (15.88%) Amazon AWS
2 72 (5.34%) Microsoft Azure
3 33 (2.45%) SaaS
4 25 (1.85%) Amazon S3
5 22 (1.63%) AWS CloudFormation
6 18 (1.34%) Office 365
7 17 (1.26%) Amazon EC2
7 17 (1.26%) GitHub
8 16 (1.19%) Amazon ELB
9 14 (1.04%) Cloud Computing
9 14 (1.04%) Google Cloud Platform
10 11 (0.82%) IaaS
10 11 (0.82%) PaaS
11 10 (0.74%) G Suite
11 10 (0.74%) Route 53
12 9 (0.67%) Amazon SQS
12 9 (0.67%) AWS Lambda
12 9 (0.67%) Virtual Private Cloud
13 6 (0.45%) Amazon ElastiCache
14 5 (0.37%) Rackspace Cloud
Communications & Networking
1 129 (9.57%) Firewall
2 74 (5.49%) TCP/IP
3 71 (5.27%) SAN
4 63 (4.67%) DNS
5 46 (3.41%) DHCP
6 45 (3.34%) Network Security
7 39 (2.89%) WAN
8 38 (2.82%) Internet
8 38 (2.82%) LAN
8 38 (2.82%) NAS
9 37 (2.74%) VPN
10 32 (2.37%) Cisco ASA
11 29 (2.15%) HTTP
12 27 (2.00%) LDAP
13 24 (1.78%) Wireless
14 21 (1.56%) BGP
15 20 (1.48%) Intrusion Detection
16 19 (1.41%) OSPF
16 19 (1.41%) VLAN
17 18 (1.34%) SSL
Database & Business Intelligence
1 170 (12.61%) MySQL
2 126 (9.35%) SQL Server
3 65 (4.82%) Relational Database
4 63 (4.67%) NoSQL
5 53 (3.93%) Big Data
6 52 (3.86%) PostgreSQL
7 49 (3.64%) Hadoop
8 48 (3.56%) KDB
8 48 (3.56%) Oracle Database
9 43 (3.19%) MongoDB
10 34 (2.52%) Apache Cassandra
10 34 (2.52%) Kdb+
11 33 (2.45%) Redis
12 26 (1.93%) Oracle Database 11g
12 26 (1.93%) SQL Server 2008
13 24 (1.78%) RDBMS
14 18 (1.34%) Apache Hive
14 18 (1.34%) Data Warehouse
14 18 (1.34%) SQL Server Reporting Services
15 16 (1.19%) HBase
Development Applications
1 184 (13.65%) Jenkins
2 142 (10.53%) Git (software)
3 109 (8.09%) JIRA
4 82 (6.08%) Subversion
5 66 (4.90%) Maven
6 46 (3.41%) Atlassian Bamboo
7 45 (3.34%) JUnit
8 36 (2.67%) Gradle
9 31 (2.30%) Selenium
10 22 (1.63%) TeamCity
11 19 (1.41%) SilkPerformer
11 19 (1.41%) SilkTest
12 18 (1.34%) Cucumber
13 16 (1.19%) Eclipse
13 16 (1.19%) Vagrant
14 12 (0.89%) Gatling
15 11 (0.82%) git-flow
16 8 (0.59%) Octopus Deploy
17 7 (0.52%) GitLab
17 7 (0.52%) Travis CI
General
1 522 (38.72%) Finance
2 219 (16.25%) Banking
3 123 (9.12%) Front Office
4 40 (2.97%) Investment Banking
5 37 (2.74%) Advertising
6 27 (2.00%) Telecoms
7 25 (1.85%) Games
8 24 (1.78%) Back Office
9 23 (1.71%) Legal
10 19 (1.41%) Marketing
11 16 (1.19%) Retail
12 14 (1.04%) Financial Institution
13 11 (0.82%) French Language
14 5 (0.37%) Electronics
15 4 (0.30%) Billing
15 4 (0.30%) Law
15 4 (0.30%) Manufacturing
15 4 (0.30%) Multimedia
16 3 (0.22%) Pharmaceutical
17 2 (0.15%) Automotive
Job Titles
1 377 (27.97%) Developer
2 161 (11.94%) DevOps Engineer
3 135 (10.01%) Analyst
4 107 (7.94%) Administrator
5 100 (7.42%) Java Developer
6 98 (7.27%) Linux Engineer
7 82 (6.08%) Support Engineer
8 67 (4.97%) C++ Developer
9 66 (4.90%) Applications Support
10 64 (4.75%) Senior Developer
11 55 (4.08%) Support Analyst
12 54 (4.01%) Linux Administrator
13 53 (3.93%) Systems Administrator
14 45 (3.34%) Front Office Developer
14 45 (3.34%) Infrastructure Engineer
14 45 (3.34%) Senior Java Developer
15 44 (3.26%) Systems Engineer
16 42 (3.12%) JavaScript Developer
17 41 (3.04%) Linux/Unix DevOps
18 39 (2.89%) Network Engineer
Libraries, Frameworks & Software Standards
1 150 (11.13%) HTML
2 109 (8.09%) CSS
3 91 (6.75%) Node.js
4 86 (6.38%) Web Services
5 75 (5.56%) jQuery
5 75 (5.56%) Spring
6 61 (4.53%) FIX Protocol
7 59 (4.38%) .NET
8 58 (4.30%) LAMP
8 58 (4.30%) XML
9 46 (3.41%) HTML5
9 46 (3.41%) React
10 41 (3.04%) Twitter Bootstrap
11 40 (2.97%) Hibernate
12 39 (2.89%) AngularJS
13 34 (2.52%) JDBC
14 31 (2.30%) REST
15 30 (2.23%) J2SE
16 28 (2.08%) CSS3
16 28 (2.08%) J2EE
Miscellaneous
1 149 (11.05%) Fintech
2 109 (8.09%) Computer Science
3 65 (4.82%) Analytical Skills
4 60 (4.45%) Data Centre
4 60 (4.45%) Equities
5 53 (3.93%) User Experience
6 51 (3.78%) Derivative
7 45 (3.34%) Linux Command Line
8 43 (3.19%) Algorithms
8 43 (3.19%) Greenfield Project
8 43 (3.19%) Hedge funds
9 39 (2.89%) Foreign Exchange (FX)
10 33 (2.45%) Management Information System
11 32 (2.37%) Fixed Income
12 31 (2.30%) Clustering
13 27 (2.00%) Replication
14 20 (1.48%) Data Structures
15 19 (1.41%) PKI
16 15 (1.11%) Equity Derivative
17 14 (1.04%) Enterprise Software
Operating Systems
1 488 (36.20%) Windows
2 384 (28.49%) Unix
3 191 (14.17%) Red Hat Enterprise Linux
4 123 (9.12%) Windows Server
5 105 (7.79%) CentOS
6 99 (7.34%) Ubuntu
7 83 (6.16%) Solaris
8 45 (3.34%) Debian
9 41 (3.04%) Windows Server 2008
10 32 (2.37%) Windows Server 2012
11 18 (1.34%) Android
12 12 (0.89%) Apple iOS
12 12 (0.89%) Mac OS X
13 11 (0.82%) Kali Linux
13 11 (0.82%) SUSE
14 10 (0.74%) AIX
14 10 (0.74%) Windows 7
15 9 (0.67%) Mac OS
15 9 (0.67%) VMS
16 8 (0.59%) NetWare
Processes & Methodologies
1 279 (20.70%) DevOps
2 228 (16.91%) Agile Software Development
3 130 (9.64%) Configuration Management
4 124 (9.20%) Continuous Integration
5 122 (9.05%) Electronic Trading
6 107 (7.94%) Open Source
7 96 (7.12%) Test Automation
8 95 (7.05%) ITIL
9 82 (6.08%) Low Latency
10 74 (5.49%) Mathematics
11 68 (5.04%) Multithreading
12 62 (4.60%) Microservices
12 62 (4.60%) SDLC
13 56 (4.15%) Disaster Recovery
13 56 (4.15%) Scrum
13 56 (4.15%) Software Engineering
14 55 (4.08%) TDD
15 54 (4.01%) OO
16 51 (3.78%) Analytics
16 51 (3.78%) High Availability
Programming Languages
1 452 (33.53%) Python
2 379 (28.12%) Java
3 373 (27.67%) SQL
4 186 (13.80%) Bash Shell
4 186 (13.80%) JavaScript
5 171 (12.69%) Perl
6 170 (12.61%) C++
7 127 (9.42%) Ruby
8 124 (9.20%) PHP
9 115 (8.53%) Shell Script
10 92 (6.82%) PowerShell
11 67 (4.97%) C#
12 55 (4.08%) C
13 32 (2.37%) Scala
14 27 (2.00%) Go
15 20 (1.48%) VB
16 16 (1.19%) T-SQL
17 13 (0.96%) PL/SQL
18 10 (0.74%) Erlang
18 10 (0.74%) Groovy
Qualifications
1 191 (14.17%) Degree
2 74 (5.49%) Cisco Certification
3 47 (3.49%) CCNP
4 45 (3.34%) Security Cleared
5 40 (2.97%) CCNA
6 31 (2.30%) ISEB
7 28 (2.08%) Microsoft Certification
8 27 (2.00%) RHCE
9 21 (1.56%) CISSP
9 21 (1.56%) SANS
10 20 (1.48%) CCSP
10 20 (1.48%) MCSE
11 18 (1.34%) CISM
11 18 (1.34%) GCIH
12 17 (1.26%) CCDP
12 17 (1.26%) GCIA
13 15 (1.11%) VMware Certified Professional (VCP)
14 14 (1.04%) CESG Certified Professional
15 13 (0.96%) DV Cleared
15 13 (0.96%) SC Cleared
Quality Assurance & Compliance
1 61 (4.53%) QA
2 33 (2.45%) ISO/IEC 27001
3 29 (2.15%) PCI DSS
4 23 (1.71%) SLA
5 8 (0.59%) MiFID
6 4 (0.30%) PMO
7 2 (0.15%) ISO27002
8 1 (0.074%) COBIT
8 1 (0.074%) EMIR
8 1 (0.074%) GCP
8 1 (0.074%) SEPA
System Software
1 146 (10.83%) Docker
2 101 (7.49%) VMware Infrastructure
3 93 (6.90%) Active Directory
4 36 (2.67%) Virtual Machines
5 34 (2.52%) vSphere
6 28 (2.08%) NFS
7 25 (1.85%) Hyper-V
8 21 (1.56%) VMware ESXi
9 19 (1.41%) XenApp
10 15 (1.11%) Snort
10 15 (1.11%) Virtual Servers
11 14 (1.04%) Veritas Cluster Server
12 13 (0.96%) KVM
13 12 (0.89%) Microsoft Virtual Server
14 10 (0.74%) pfSense
14 10 (0.74%) XenServer
15 9 (0.67%) HDFS
15 9 (0.67%) Xen
16 6 (0.45%) Samba
16 6 (0.45%) VirtualBox
Systems Management
1 256 (18.99%) Puppet
2 185 (13.72%) Ansible
3 154 (11.42%) Opscode Chef
4 57 (4.23%) Terraform
5 47 (3.49%) Kubernetes
6 41 (3.04%) Nagios
7 21 (1.56%) Salt
7 21 (1.56%) SCCM
8 18 (1.34%) Nessus
9 16 (1.19%) ITRS Geneos
10 15 (1.11%) Mesos
11 14 (1.04%) OSSEC
12 13 (0.96%) FortiGate
13 11 (0.82%) BMC PATROL
13 11 (0.82%) Control-M
14 10 (0.74%) McAfee ePO
14 10 (0.74%) Network Intrusion Detection System
15 9 (0.67%) Grafana
15 9 (0.67%) Simpana
16 8 (0.59%) AirWatch
Vendors
1 210 (15.58%) Red Hat
2 182 (13.50%) Oracle
3 168 (12.46%) VMware
4 134 (9.94%) Microsoft
5 105 (7.79%) Cisco
6 52 (3.86%) NetApp
7 49 (3.64%) HP
8 46 (3.41%) Citrix
9 44 (3.26%) Atlassian
10 41 (3.04%) Juniper
11 37 (2.74%) EMC
11 37 (2.74%) Twitter
12 36 (2.67%) CheckPoint
13 34 (2.52%) Sybase
14 33 (2.45%) Veritas
15 32 (2.37%) F5
16 29 (2.15%) Google
17 28 (2.08%) TIBCO
18 27 (2.00%) Brocade
18 27 (2.00%) McAfee
City, London
Digitech Resourcing Ltd
Salary: From £50,000 to £65,000 per annum
Posted: 16 hours ago
City, London
Harrington Starr
Salary: £60000 - £80000 per annum
Posted: 16 hours ago
City, London
Client Server
Salary: £55k to £70k + bonus + benefits
Posted: 21 hours ago
City, London
Understanding Recruitment
Salary: £25000.00 - £30000.00 per annum + Benefits
Posted: Yesterday
City, London
Client Server
Salary: £55k to £70k + benefits
Posted: 17 hours ago
City, London
Digitech Resourcing Ltd
Salary: From £45,000 to £55,000 per annum
Posted: Yesterday
City, London
Understanding Recruitment
Salary: £30000 - £33000 per annum + Bens - Pens, Health
Posted: Yesterday
City, London
Digital Pursuit Ltd
Salary: From £50,000 to £65,000 per annum Remote working, flexible hours, Holi
Posted: 22 hours ago
City, London
Salt
Salary: £40000 - £47000 per annum + Benefits
Posted: Yesterday
City, London
I.T. Skillfinder
Salary: competitive
Posted: 20 hours ago
City, London
Spencer Rose
Salary: From £30,000 to £50,000 per annum Bonus + Benefits Package
Posted: 3 days ago
City, London
Quant Capital
Salary: Up to £40,000 per annum + bonus and benefits
Posted: 22 hours ago
City, London
Quant Capital
Salary: Up to £95,000 per annum Bonus Medical Pension
Posted: 23 hours ago
City, London
TEKsystems
Salary: £75000 - £85000 per annum + Excellent Package
Posted: 3 days ago
City, London
Tec Partners
Salary: £45000.00 - £60000.00 per annum
Posted: 5 days ago
City, London
Miller Maxwell Ltd
Salary: From £45,000 to £55,000 per annum + Bonus & Benefits
Posted: Yesterday
City, London
Harrington Starr
Salary: £50000 - £60000 per annum
Posted: 3 days ago
City, London
Energon People
Salary: £40000 - £55000 per annum + Amazing Package
Posted: 16 hours ago
City, London
Harrington Starr
Salary: £65000 - £75000 per annum
Posted: 3 days ago
City, London
TEKsystems
Salary: £50000 - £120000 per annum
Posted: 3 days ago
City, London
Harrington Starr
Salary: £70000 - £90000 per annum
Posted: 3 days ago
City, London
Client Server
Salary: £45k to £50k + bonus + benefits
Posted: 18 hours ago
City, London
Senitor Associates
Salary: Excellent Benefits
Posted: 3 days ago
City, London
Harrington Starr
Salary: £70000 - £90000 per annum + Bonus + Benefits + Training
Posted: 2 days ago
City, London
Harrington Starr
Salary: £50000 - £60000 per annum
Posted: 3 days ago
City, London
Total Recruitment Specialists Limited / TRG / Total recruitment group
Salary: £50000 - £65000 Per Annum Benefits
Posted: Yesterday
City, London
Client Server
Salary: £60k to £85k + bonus + benefits
Posted: 6 days ago
City, London
onezeero.
Salary: £45000 - £60000 per annum
Posted: 5 days ago
City, London
Client Server
Salary: £70k to £85k + benefits
Posted: 5 days ago
City, London
Senitor Associates
Salary: £40000 - £45000 per annum + Excellent Benefits Package
Posted: 3 days ago