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 28 March 2017 with a comparison to the same period in the previous 2 years.

Linux
London / City of London
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 13 17 14
Rank change year-on-year +4 -3  
Permanent jobs citing Linux 636 693 1095
As % of all permanent IT jobs advertised in the City of London 12.40% 9.71% 10.49%
As % of the Operating Systems category 48.15% 40.38% 39.32%
Number of salaries quoted 577 623 944
Median salary £60,000 £60,000 £55,000
Median salary % change year-on-year - +9.09%  
90% offered a salary of more than £37,500 £37,500 £37,500
10% offered a salary of more than £92,500 £84,500 £77,050
UK excluding London median salary £42,500 £42,500 £42,000
% change year-on-year - +1.19%  

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 1321 1716 2785
As % of all permanent IT job vacancies advertised in the City of London 25.77% 24.03% 26.68%
Number of salaries quoted 1209 1533 2420
Median salary £53,750 £52,500 £48,500
Median salary % change year-on-year +2.38% +8.24%  
90% offered a salary of more than £29,000 £30,000 £30,000
10% offered a salary of more than £81,250 £70,000 £80,000
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 28 March 2017.

Salary histogram for Linux in the City of London

For the 6 months to 28 March 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.

1 496 (38.66%) Finance
2 433 (33.75%) Windows
3 408 (31.80%) Python
4 375 (29.23%) Unix
5 373 (29.07%) Java
5 373 (29.07%) SQL
6 257 (20.03%) DevOps
7 237 (18.47%) Puppet
8 226 (17.61%) Banking
9 203 (15.82%) JavaScript
10 200 (15.59%) Agile Software Development
11 199 (15.51%) Degree
12 192 (14.96%) Red Hat Enterprise Linux
13 188 (14.65%) Amazon AWS
14 180 (14.03%) Red Hat
15 179 (13.95%) Jenkins
16 176 (13.72%) Oracle
17 174 (13.56%) Bash Shell
18 171 (13.33%) Perl
18 171 (13.33%) C++
19 170 (13.25%) Opscode Chef
20 169 (13.17%) Git (software)
21 156 (12.16%) MySQL
22 150 (11.69%) VMware
23 148 (11.54%) HTML
24 146 (11.38%) Ansible
25 141 (10.99%) Ruby
26 132 (10.29%) Configuration Management
27 126 (9.82%) Microsoft
28 124 (9.66%) Front Office

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
1 119 (9.28%) Apache
2 68 (5.30%) IIS
2 68 (5.30%) Tomcat
3 37 (2.88%) JBoss
3 37 (2.88%) OpenStack
4 31 (2.42%) nginx
5 28 (2.18%) Apache Spark
6 27 (2.10%) Elasticsearch
7 24 (1.87%) WebSphere
8 20 (1.56%) WebLogic
9 19 (1.48%) MS Exchange
10 18 (1.40%) Confluence
11 15 (1.17%) BizTalk Server
12 12 (0.94%) CMS
12 12 (0.94%) Drupal
13 10 (0.78%) Alfresco
13 10 (0.78%) Exchange Server 2010
14 9 (0.70%) Exchange Server 2013
15 8 (0.62%) Apache Pig
15 8 (0.62%) Cloud Foundry
Applications
1 39 (3.04%) MS Excel
2 17 (1.33%) Photoshop
3 8 (0.62%) MS Office
4 4 (0.31%) GNU Octave
5 3 (0.23%) MS PowerPoint
6 1 (0.078%) MS Visio
Business Applications
1 5 (0.39%) Dynamics CRM
2 4 (0.31%) Magento
2 4 (0.31%) Sage X3
2 4 (0.31%) Salerio
3 3 (0.23%) CSG Singleview
3 3 (0.23%) Eze OMS
3 3 (0.23%) RMDS
3 3 (0.23%) thinkFolio
4 2 (0.16%) Eikon
4 2 (0.16%) LatentZero
4 2 (0.16%) PeopleSoft CRM
4 2 (0.16%) SAP BPC
5 1 (0.078%) Bloomberg TOMS
5 1 (0.078%) Markit EDM
5 1 (0.078%) SAP Oil and Gas
5 1 (0.078%) Sentinel
Cloud Services
1 188 (14.65%) Amazon AWS
2 71 (5.53%) Microsoft Azure
3 27 (2.10%) SaaS
4 24 (1.87%) Office 365
5 16 (1.25%) Google Cloud Platform
6 15 (1.17%) AWS CloudFormation
6 15 (1.17%) IaaS
6 15 (1.17%) PaaS
7 12 (0.94%) Amazon S3
7 12 (0.94%) G Suite
7 12 (0.94%) GitHub
8 9 (0.70%) Amazon EC2
8 9 (0.70%) Amazon ELB
9 7 (0.55%) Route 53
10 6 (0.47%) Cloud Computing
11 5 (0.39%) Heroku
11 5 (0.39%) Virtual Private Cloud
12 4 (0.31%) Amazon CloudWatch
13 3 (0.23%) Bluemix
13 3 (0.23%) Datadog
Communications & Networking
1 119 (9.28%) Firewall
2 64 (4.99%) DNS
3 53 (4.13%) SAN
4 46 (3.59%) TCP/IP
5 45 (3.51%) DHCP
6 38 (2.96%) Internet
7 37 (2.88%) VPN
8 36 (2.81%) Network Security
9 32 (2.49%) NAS
10 31 (2.42%) WAN
11 26 (2.03%) HTTP
11 26 (2.03%) LDAP
12 24 (1.87%) Cisco ASA
13 23 (1.79%) BGP
14 22 (1.71%) OSPF
15 20 (1.56%) LAN
16 19 (1.48%) SSL
17 17 (1.33%) Intrusion Detection
17 17 (1.33%) Wireless
18 14 (1.09%) VoIP
Database & Business Intelligence
1 156 (12.16%) MySQL
2 122 (9.51%) SQL Server
3 71 (5.53%) Relational Database
4 69 (5.38%) NoSQL
5 58 (4.52%) MongoDB
6 52 (4.05%) PostgreSQL
7 49 (3.82%) KDB
8 48 (3.74%) Hadoop
8 48 (3.74%) Oracle Database
9 42 (3.27%) Big Data
10 38 (2.96%) Apache Cassandra
11 35 (2.73%) Kdb+
12 34 (2.65%) Redis
13 26 (2.03%) Oracle Database 11g
14 24 (1.87%) Data Warehouse
15 22 (1.71%) Apache Hive
16 21 (1.64%) RDBMS
17 18 (1.40%) SQL Server 2008
18 17 (1.33%) SQL Server Reporting Services
19 14 (1.09%) HBase
Development Applications
1 179 (13.95%) Jenkins
2 169 (13.17%) Git (software)
3 105 (8.18%) JIRA
4 89 (6.94%) Subversion
5 77 (6.00%) Maven
6 52 (4.05%) Gradle
6 52 (4.05%) JUnit
7 42 (3.27%) Atlassian Bamboo
8 23 (1.79%) git-flow
9 21 (1.64%) Selenium
10 17 (1.33%) SilkPerformer
10 17 (1.33%) SilkTest
10 17 (1.33%) TeamCity
11 16 (1.25%) Vagrant
12 15 (1.17%) Cucumber
13 13 (1.01%) RSpec
14 11 (0.86%) GitLab
15 9 (0.70%) Eclipse
15 9 (0.70%) FishEye
15 9 (0.70%) JMeter
General
1 496 (38.66%) Finance
2 226 (17.61%) Banking
3 124 (9.66%) Front Office
4 29 (2.26%) Investment Banking
5 25 (1.95%) Advertising
6 24 (1.87%) Games
7 21 (1.64%) Retail
7 21 (1.64%) Telecoms
8 20 (1.56%) Back Office
8 20 (1.56%) Marketing
9 17 (1.33%) Legal
10 13 (1.01%) Financial Institution
11 10 (0.78%) French Language
12 8 (0.62%) Publishing
13 5 (0.39%) Electronics
13 5 (0.39%) Turkish Language
14 4 (0.31%) Automotive
14 4 (0.31%) Law
14 4 (0.31%) Manufacturing
15 3 (0.23%) Aerospace
Job Titles
1 403 (31.41%) Developer
2 147 (11.46%) DevOps Engineer
3 112 (8.73%) Java Developer
4 110 (8.57%) Analyst
5 85 (6.63%) Senior Developer
6 84 (6.55%) Administrator
6 84 (6.55%) C++ Developer
7 83 (6.47%) Linux Engineer
8 65 (5.07%) Support Engineer
9 64 (4.99%) Applications Support
9 64 (4.99%) Senior Java Developer
10 56 (4.36%) Front Office Developer
11 52 (4.05%) Linux Administrator
12 47 (3.66%) Support Analyst
12 47 (3.66%) Systems Administrator
13 46 (3.59%) Architect
13 46 (3.59%) Python Developer
14 41 (3.20%) Java Pricing Developer
15 40 (3.12%) JavaScript Developer
15 40 (3.12%) Systems Engineer
Libraries, Frameworks & Software Standards
1 148 (11.54%) HTML
2 118 (9.20%) CSS
3 111 (8.65%) Node.js
4 81 (6.31%) jQuery
5 79 (6.16%) Spring
6 66 (5.14%) Web Services
7 59 (4.60%) LAMP
7 59 (4.60%) XML
8 56 (4.36%) HTML5
9 53 (4.13%) .NET
10 50 (3.90%) FIX Protocol
11 49 (3.82%) JDBC
12 46 (3.59%) J2SE
12 46 (3.59%) React
13 42 (3.27%) AngularJS
13 42 (3.27%) Twitter Bootstrap
14 36 (2.81%) CSS3
14 36 (2.81%) Middleware
15 32 (2.49%) Hibernate
15 32 (2.49%) Ruby on Rails
Miscellaneous
1 121 (9.43%) Computer Science
2 120 (9.35%) Fintech
3 70 (5.46%) Equities
4 67 (5.22%) User Experience
5 60 (4.68%) Hedge funds
6 58 (4.52%) Analytical Skills
7 53 (4.13%) Data Centre
8 49 (3.82%) Derivative
9 44 (3.43%) Algorithms
9 44 (3.43%) Linux Command Line
10 39 (3.04%) Foreign Exchange (FX)
11 30 (2.34%) Fixed Income
12 24 (1.87%) Management Information System
13 23 (1.79%) Clustering
14 17 (1.33%) Data Structures
15 15 (1.17%) Enterprise Software
15 15 (1.17%) Replication
16 14 (1.09%) Public Cloud
17 13 (1.01%) Equity Derivative
17 13 (1.01%) Security Operations Centre
Operating Systems
1 433 (33.75%) Windows
2 375 (29.23%) Unix
3 192 (14.96%) Red Hat Enterprise Linux
4 115 (8.96%) Windows Server
5 86 (6.70%) Ubuntu
6 78 (6.08%) CentOS
7 65 (5.07%) Solaris
8 42 (3.27%) Windows Server 2012
9 38 (2.96%) Windows Server 2008
10 30 (2.34%) Debian
11 17 (1.33%) SUSE
12 16 (1.25%) Mac OS X
13 15 (1.17%) Android
14 13 (1.01%) Windows 7
15 11 (0.86%) AIX
16 10 (0.78%) NetWare
17 9 (0.70%) Mac OS
18 8 (0.62%) Windows 10
19 6 (0.47%) Apple iOS
20 4 (0.31%) VMS
Processes & Methodologies
1 257 (20.03%) DevOps
2 200 (15.59%) Agile Software Development
3 132 (10.29%) Configuration Management
4 121 (9.43%) Electronic Trading
5 107 (8.34%) Continuous Integration
6 103 (8.03%) Low Latency
7 98 (7.64%) Open Source
8 87 (6.78%) ITIL
9 86 (6.70%) Multithreading
10 76 (5.92%) Mathematics
11 67 (5.22%) Software Engineering
12 62 (4.83%) Analytics
13 59 (4.60%) OOD
14 56 (4.36%) Disaster Recovery
15 55 (4.29%) SDLC
15 55 (4.29%) TDD
16 45 (3.51%) Scrum
16 45 (3.51%) Visualisation
17 43 (3.35%) High Availability
17 43 (3.35%) OO
Programming Languages
1 408 (31.80%) Python
2 373 (29.07%) Java
2 373 (29.07%) SQL
3 203 (15.82%) JavaScript
4 174 (13.56%) Bash Shell
5 171 (13.33%) C++
5 171 (13.33%) Perl
6 141 (10.99%) Ruby
7 111 (8.65%) PHP
8 103 (8.03%) Shell Script
9 78 (6.08%) PowerShell
10 60 (4.68%) C#
11 54 (4.21%) C
12 53 (4.13%) Scala
13 20 (1.56%) PL/SQL
14 16 (1.25%) Go
15 15 (1.17%) VB
16 12 (0.94%) T-SQL
17 9 (0.70%) R
18 8 (0.62%) Objective-C
Qualifications
1 199 (15.51%) Degree
2 82 (6.39%) Cisco Certification
3 48 (3.74%) CCNA
4 44 (3.43%) CCNP
5 33 (2.57%) Microsoft Certification
6 27 (2.10%) RHCE
7 25 (1.95%) MCSE
8 24 (1.87%) Security Cleared
9 23 (1.79%) ISEB
10 19 (1.48%) SANS
11 17 (1.33%) CISSP
11 17 (1.33%) GCIA
11 17 (1.33%) GCIH
12 15 (1.17%) CISM
12 15 (1.17%) RHCA
13 12 (0.94%) CCSP
14 11 (0.86%) GIAC
14 11 (0.86%) JNCIS
14 11 (0.86%) SC Cleared
14 11 (0.86%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 55 (4.29%) QA
2 19 (1.48%) ISO/IEC 27001
2 19 (1.48%) SLA
3 18 (1.40%) PCI DSS
4 7 (0.55%) PMO
5 5 (0.39%) MiFID
6 3 (0.23%) GCP
7 2 (0.16%) COBIT
7 2 (0.16%) JTAG
8 1 (0.078%) EMIR
8 1 (0.078%) Sarbanes-Oxley
8 1 (0.078%) SDET
System Software
1 113 (8.81%) Docker
2 97 (7.56%) Active Directory
3 94 (7.33%) VMware Infrastructure
4 30 (2.34%) vSphere
5 29 (2.26%) Virtual Machines
6 26 (2.03%) Hyper-V
7 25 (1.95%) Virtual Servers
8 23 (1.79%) NFS
9 21 (1.64%) XenApp
10 14 (1.09%) Microsoft Virtual Server
10 14 (1.09%) VMware ESX
11 13 (1.01%) Veritas Cluster Server
12 11 (0.86%) HDFS
12 11 (0.86%) KVM
13 10 (0.78%) Xen
14 8 (0.62%) XenServer
15 7 (0.55%) Snort
16 6 (0.47%) VMware ESXi
17 5 (0.39%) Samba
18 4 (0.31%) VirtualBox
Systems Management
1 237 (18.47%) Puppet
2 170 (13.25%) Opscode Chef
3 146 (11.38%) Ansible
4 45 (3.51%) Nagios
5 40 (3.12%) Terraform
6 35 (2.73%) Kubernetes
7 27 (2.10%) SCCM
8 19 (1.48%) Salt
9 14 (1.09%) FortiGate
9 14 (1.09%) Mesos
10 11 (0.86%) Nessus
10 11 (0.86%) WSUS
11 10 (0.78%) Cisco CUCM
11 10 (0.78%) EMC VPLEX
11 10 (0.78%) NetIQ Identity Manager
11 10 (0.78%) Simpana
12 8 (0.62%) Cisco UCCX
12 8 (0.62%) McAfee ePO
12 8 (0.62%) Network Intrusion Detection System
12 8 (0.62%) Red Hat Satellite
Vendors
1 180 (14.03%) Red Hat
2 176 (13.72%) Oracle
3 150 (11.69%) VMware
4 126 (9.82%) Microsoft
5 100 (7.79%) Cisco
6 54 (4.21%) Atlassian
7 40 (3.12%) Citrix
8 39 (3.04%) EMC
9 38 (2.96%) NetApp
10 37 (2.88%) Veritas
11 34 (2.65%) Twitter
12 33 (2.57%) HP
13 31 (2.42%) IBM
14 29 (2.26%) Google
14 29 (2.26%) Juniper
15 28 (2.18%) TIBCO
16 27 (2.10%) CheckPoint
17 23 (1.79%) Dell
18 21 (1.64%) F5
19 20 (1.56%) Intel Security
City, London
Talent Point Ltd
Salary: £40000.00 - £60000.00 per annum
Posted: 19 hours ago
City, London
Digitech Resourcing Ltd
Salary: From £70,000 to £85,000 per annum plus 15% bonus and benefits
Posted: 17 hours ago
City, London
onezeero.
Salary: £45000 - £60000 per annum
Posted: 12 hours ago
City, London
Miller Maxwell Ltd
Salary: From £90,000 to £125,000 per annum + Bonus + Benefits
Posted: 17 hours ago
City, London
Hanover Recruitment
Salary: £55000 - £65000.00 per annum + great bonus, benefits & culture
Posted: 12 hours ago
City, London
Digital Gurus
Salary: £65000 per annum
Posted: 10 hours ago
City, London
Digital Gurus
Salary: £65000 Per Annum
Posted: 10 hours ago
City, London
Digitech Resourcing Ltd
Salary: From £50,000 to £70,000 per annum plus benefits
Posted: 17 hours ago
City, London
Harrington Starr
Salary: £45000 per annum + Bonus + Benefits
Posted: Yesterday
City, London
Sogeti
Salary: Competitive salary + benefits
Posted: 12 hours ago
City, London
set2recruit
Salary: From £35,000 to £45,000 per annum DOE
Posted: 16 hours ago
City, London
Harvey Nash plc
Salary: £80000 - £90000 per annum
Posted: 11 hours ago
City, London
Absolute Solution Limited
Salary: From £35,000 to £45,000 per annum
Posted: 11 hours ago
City, London
Real Time Recruitment Solutions
Salary: 40,000 to 50,000
Posted: 17 hours ago
City, London
Understanding Recruitment
Salary: £25000.00 - £30000.00 per annum + Benefits
Posted: Yesterday
City, London
Senitor Associates
Salary: £30000 - £35000 per annum
Posted: Yesterday
City, London
Quant Capital
Salary: Up to £70,000 per annum Bonus Medical Pension
Posted: 18 hours ago
City, London
Marcus Donald People
Salary: £45000 - £50000 per annum, Benefits Company Benefits
Posted: 14 hours ago
City, London
Mortimer Spinks
Posted: Yesterday
City, London
GridCell
Salary: From £40,000 to £50,000 per annum Bonuses, Pension, Training Allowance
Posted: 7 hours ago
City, London
Searchability
Salary: £35000 - £40000 per annum
Posted: 10 hours ago
City, London
Itecco
Salary: £15000 - £20000 per annum + Extensive Training
Posted: 13 hours ago
City, London
Miller Maxwell Ltd
Salary: Up to £65,000 per annum
Posted: 14 hours ago
City, London
Senitor Associates
Salary: £45000 - £50000 per annum
Posted: Yesterday
City, London
Energon People
Salary: £40000.00 - £55000.00 per annum + benefits + bonus
Posted: Yesterday
City, London
Understanding Recruitment
Salary: £30000 - £33000 per annum + Bens - Pens, Health
Posted: 2 days ago
City, London
Marcus Donald People
Salary: £45000 - £50000 per annum
Posted: Yesterday
City, London
JM
Salary: £40000 - £60000 per annum + Benefits and bonus package
Posted: 11 hours ago
City, London
TEKsystems
Salary: £500 - £600 per day
Posted: 12 hours ago
City, London
Quant Capital
Salary: Up to £70,000 per annum Bonus Medical Pension
Posted: 18 hours ago