Period
to 22 May 2018

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 22 May 2018 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
22 May 2018
Same period 2017 Same period 2016
Rank 21 10 12
Rank change year-on-year -11 +2 +7
Contract jobs citing Linux 549 611 625
As % of all contract IT jobs advertised in the City of London 7.94% 9.98% 9.67%
As % of the Operating Systems category 38.80% 46.25% 45.69%
Number of daily rates quoted 467 497 518
City of London median daily rate £538 £525 £475
Median daily rate % change year-on-year +2.38% +10.53% -
10th Percentile £398 £365 £330
90th Percentile £688 £650 £638
Central London median daily rate £530 £513 £475
% change year-on-year +3.41% +7.89% +0.26%
Number of hourly rates quoted 3 0 4
City of London median hourly rate £32.00 - £39.50
10th Percentile £23.20 - £20.90
90th Percentile £33.00 - £60.00
Central London median hourly rate £32.00 - £39.50

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 1,415 1,321 1,368
As % of all contract IT jobs advertised in the City of London 20.46% 21.57% 21.16%
Number of daily rates quoted 1,121 1,048 1,077
City of London median daily rate £500 £475 £463
Median daily rate % change year-on-year +5.26% +2.70% +8.82%
10th Percentile £225 £275 £263
90th Percentile £650 £641 £625
Central London median daily rate £500 £450 £450
% change year-on-year +11.11% - +5.88%
Number of hourly rates quoted 52 27 41
City of London median hourly rate £19.00 £17.00 £20.00
Median hourly rate % change year-on-year +11.76% -15.00% +11.95%
10th Percentile £12.10 £12.65 £12.50
90th Percentile £23.98 £69.50 £30.00
Central London median hourly rate £20.00 £17.85 £20.00
% change year-on-year +12.08% -10.78% +11.95%

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 22 May 2018.

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 22 May 2018, 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.

1 210 (38.25%) Java
2 195 (35.52%) Amazon AWS
3 186 (33.88%) Agile Software Development
4 180 (32.79%) Finance
5 173 (31.51%) DevOps
6 165 (30.05%) Unix
7 161 (29.33%) Python
8 158 (28.78%) Docker
9 135 (24.59%) Windows
10 121 (22.04%) Git (software)
11 110 (20.04%) Jenkins
12 103 (18.76%) Ansible
13 102 (18.58%) Banking
14 96 (17.49%) JavaScript
15 92 (16.76%) Bash Shell
16 85 (15.48%) SQL
17 77 (14.03%) Continuous Integration
17 77 (14.03%) MongoDB
17 77 (14.03%) Java 8
18 76 (13.84%) HTML
19 75 (13.66%) TDD
19 75 (13.66%) Puppet
20 72 (13.11%) Terraform
20 72 (13.11%) Red Hat
21 67 (12.20%) Red Hat Enterprise Linux
22 65 (11.84%) Microsoft Azure
23 64 (11.66%) Kubernetes
24 63 (11.48%) CSS
25 61 (11.11%) REST
26 59 (10.75%) 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 41 (7.47%) Apache Spark
2 34 (6.19%) Apache
3 24 (4.37%) Tomcat
4 20 (3.64%) Elasticsearch
5 18 (3.28%) nginx
6 16 (2.91%) Confluence
7 11 (2.00%) IIS
8 10 (1.82%) JBoss
8 10 (1.82%) OpenStack
9 9 (1.64%) Apache Solr
10 8 (1.46%) MS Exchange
10 8 (1.46%) WebSphere
11 7 (1.28%) CMS
12 6 (1.09%) Cloud Foundry
12 6 (1.09%) SharePoint
13 5 (0.91%) Adobe Experience Manager
13 5 (0.91%) WebLogic
14 4 (0.73%) Drupal
14 4 (0.73%) Jupyter
14 4 (0.73%) MQSeries
Applications
1 5 (0.91%) Microsoft Excel
2 4 (0.73%) Spreadsheet
3 3 (0.55%) Microsoft Office
4 1 (0.18%) Microsoft PowerPoint
4 1 (0.18%) MS Visio
4 1 (0.18%) Stata
Business Applications
1 20 (3.64%) ION MarketView
2 5 (0.91%) Temenos T24
3 3 (0.55%) Kondor
3 3 (0.55%) RMDS
3 3 (0.55%) Summit
4 1 (0.18%) Endur
4 1 (0.18%) OpenLink RightAngle
4 1 (0.18%) Oracle Applications
4 1 (0.18%) Oracle Cash Management
4 1 (0.18%) Oracle EBS
4 1 (0.18%) WebTrends
Cloud Services
1 195 (35.52%) Amazon AWS
2 65 (11.84%) Microsoft Azure
3 39 (7.10%) GitHub
4 31 (5.65%) Heroku
5 27 (4.92%) AWS CloudFormation
6 25 (4.55%) Amazon EC2
7 23 (4.19%) PaaS
8 22 (4.01%) Route 53
9 21 (3.83%) Amazon S3
10 20 (3.64%) AWS Lambda
10 20 (3.64%) Serverless
11 19 (3.46%) Virtual Private Cloud
12 18 (3.28%) Amazon CloudWatch
12 18 (3.28%) IaaS
13 17 (3.10%) CloudFront
14 13 (2.37%) SaaS
15 12 (2.19%) Google Cloud Platform
16 11 (2.00%) Amazon ELB
17 10 (1.82%) Cloud Computing
17 10 (1.82%) OpenShift
Communications & Networking
1 55 (10.02%) SSL
2 52 (9.47%) TCP/IP
3 50 (9.11%) DNS
4 44 (8.01%) HTTP
5 38 (6.92%) Firewall
6 33 (6.01%) FTP
7 11 (2.00%) Kerberos
8 10 (1.82%) Internet
8 10 (1.82%) SAN
9 8 (1.46%) DHCP
10 7 (1.28%) VPN
11 6 (1.09%) Intrusion Detection
11 6 (1.09%) iSCSI
11 6 (1.09%) LAN
11 6 (1.09%) Network Security
12 5 (0.91%) Multicast
12 5 (0.91%) NAS
12 5 (0.91%) Software-Defined Networking
12 5 (0.91%) SWIFTNet
12 5 (0.91%) Wireshark
Database & Business Intelligence
1 77 (14.03%) MongoDB
2 58 (10.56%) PostgreSQL
3 39 (7.10%) Big Data
4 38 (6.92%) MySQL
5 34 (6.19%) SQL Server
6 31 (5.65%) Hadoop
7 28 (5.10%) NoSQL
7 28 (5.10%) Relational Database
8 25 (4.55%) Amazon RDS
9 20 (3.64%) Apache Hive
10 19 (3.46%) KDB
11 17 (3.10%) HBase
12 15 (2.73%) Redis
13 14 (2.55%) Apache Cassandra
14 10 (1.82%) RDBMS
15 9 (1.64%) Amazon Redshift
15 9 (1.64%) Oracle Database
16 8 (1.46%) Data Warehouse
17 6 (1.09%) Impala
17 6 (1.09%) Power BI
Development Applications
1 121 (22.04%) Git (software)
2 110 (20.04%) Jenkins
3 35 (6.38%) Gradle
4 34 (6.19%) JIRA
5 33 (6.01%) TeamCity
6 31 (5.65%) GitLab
7 27 (4.92%) Maven
8 23 (4.19%) Selenium
9 21 (3.83%) Cucumber
9 21 (3.83%) Spock
10 20 (3.64%) Gatling
10 20 (3.64%) Geb
10 20 (3.64%) gulp
11 15 (2.73%) JUnit
12 14 (2.55%) Octopus Deploy
13 12 (2.19%) Sonatype Nexus
14 11 (2.00%) Subversion
15 10 (1.82%) Artifactory
16 9 (1.64%) Atlassian Bamboo
17 7 (1.28%) IntelliJ
General
1 180 (32.79%) Finance
2 102 (18.58%) Banking
3 37 (6.74%) Front Office
4 32 (5.83%) Investment Banking
5 13 (2.37%) Financial Institution
6 10 (1.82%) Back Office
7 6 (1.09%) Retail Banking
7 6 (1.09%) Telecoms
8 4 (0.73%) Mandarin Language
8 4 (0.73%) Marketing
8 4 (0.73%) Retail
8 4 (0.73%) Spanish Language
9 3 (0.55%) French Language
9 3 (0.55%) German Language
9 3 (0.55%) Publishing
10 2 (0.36%) Cantonese Language
10 2 (0.36%) Italian Language
10 2 (0.36%) Japanese Language
10 2 (0.36%) Law
10 2 (0.36%) Russian Language
Job Titles
1 178 (32.42%) Developer
2 114 (20.77%) DevOps Engineer
3 82 (14.94%) Java Developer
4 50 (9.11%) Senior Developer
5 49 (8.93%) AWS Engineer
6 41 (7.47%) AWS DevOps
7 35 (6.38%) Analyst
7 35 (6.38%) Linux Engineer
7 35 (6.38%) Senior Java Developer
8 34 (6.19%) AWS DevOps Engineer
9 25 (4.55%) Senior DevOps
10 22 (4.01%) Cloud Engineer
10 22 (4.01%) Data Engineer
11 21 (3.83%) Administrator
11 21 (3.83%) Agile Developer
12 20 (3.64%) Agile Java Developer
12 20 (3.64%) Architect
12 20 (3.64%) C++ Developer
13 18 (3.28%) Senior DevOps Engineer
14 16 (2.91%) Linux/Unix DevOps
Libraries, Frameworks & Software Standards
1 76 (13.84%) HTML
2 63 (11.48%) CSS
3 61 (11.11%) REST
4 59 (10.75%) Kafka
5 57 (10.38%) Node.js
6 55 (10.02%) AngularJS
7 45 (8.20%) HTML5
8 39 (7.10%) SOAP
9 36 (6.56%) Spring
10 31 (5.65%) OAuth
10 31 (5.65%) OAuth2
10 31 (5.65%) Web Services
11 30 (5.46%) React
12 27 (4.92%) Dropwizard
12 27 (4.92%) XML
13 23 (4.19%) FIX Protocol
13 23 (4.19%) Guice
13 23 (4.19%) Ratpack
13 23 (4.19%) WireMock
14 21 (3.83%) RESTful
Miscellaneous
1 41 (7.47%) Analytical Skills
2 28 (5.10%) Foreign Exchange (FX)
3 27 (4.92%) Fintech
4 23 (4.19%) Computer Science
5 19 (3.46%) Data Centre
6 17 (3.10%) Fixed Income
7 16 (2.91%) Greenfield Project
8 14 (2.55%) Device Driver
8 14 (2.55%) Hedge funds
9 13 (2.37%) Equities
10 12 (2.19%) Credit Risk
11 10 (1.82%) Linux Command Line
12 9 (1.64%) Derivative
12 9 (1.64%) Market Risk
12 9 (1.64%) User Experience
13 8 (1.46%) Cloud Native
13 8 (1.46%) Management Information System
13 8 (1.46%) Private Cloud
14 7 (1.28%) Algorithms
14 7 (1.28%) Virtual Team
Operating Systems
1 165 (30.05%) Unix
2 135 (24.59%) Windows
3 67 (12.20%) Red Hat Enterprise Linux
4 49 (8.93%) Ubuntu
5 45 (8.20%) CentOS
6 43 (7.83%) Windows Server
7 25 (4.55%) Solaris
8 16 (2.91%) Mac OS X
9 15 (2.73%) Windows Server 2008
10 9 (1.64%) Windows Server 2012
11 7 (1.28%) AIX
11 7 (1.28%) Debian
12 6 (1.09%) Mac OS
13 5 (0.91%) CoreOS
13 5 (0.91%) DC/OS
14 4 (0.73%) Windows 7
15 3 (0.55%) SUSE Linux Enterprise Server
16 2 (0.36%) Oracle Linux
16 2 (0.36%) Windows 10
16 2 (0.36%) Windows 8
Processes & Methodologies
1 186 (33.88%) Agile Software Development
2 173 (31.51%) DevOps
3 77 (14.03%) Continuous Integration
4 75 (13.66%) TDD
5 56 (10.20%) Microservices
6 53 (9.65%) Configuration Management
7 43 (7.83%) BDD
8 42 (7.65%) Test Automation
9 38 (6.92%) Analytics
9 38 (6.92%) Software Engineering
10 36 (6.56%) Open Source
11 32 (5.83%) Continuous Delivery
11 32 (5.83%) OWASP
11 32 (5.83%) Problem-Solving
12 31 (5.65%) Deployment Automation
12 31 (5.65%) Electronic Trading
13 30 (5.46%) Migration
14 28 (5.10%) High Availability
15 26 (4.74%) Domain-Driven Design
16 23 (4.19%) Low Latency
Programming Languages
1 210 (38.25%) Java
2 161 (29.33%) Python
3 96 (17.49%) JavaScript
4 92 (16.76%) Bash Shell
5 85 (15.48%) SQL
6 77 (14.03%) Java 8
7 56 (10.20%) Ruby
8 42 (7.65%) Shell Script
9 40 (7.29%) Scala
10 33 (6.01%) Groovy
10 33 (6.01%) TypeScript
11 31 (5.65%) C#
12 29 (5.28%) C++
12 29 (5.28%) ES6
12 29 (5.28%) Go
12 29 (5.28%) Perl
13 23 (4.19%) PowerShell
14 14 (2.55%) PHP
15 12 (2.19%) PL/SQL
16 9 (1.64%) C
Qualifications
1 40 (7.29%) Security Cleared
2 32 (5.83%) Degree
3 28 (5.10%) SC Cleared
4 13 (2.37%) Computer Science Degree
5 12 (2.19%) AWS Certification
6 11 (2.00%) CISSP
7 7 (1.28%) DV Cleared
8 6 (1.09%) CISM
8 6 (1.09%) RHCE
9 5 (0.91%) CEH
9 5 (0.91%) Master's Degree
10 4 (0.73%) SANS
11 3 (0.55%) CISA
11 3 (0.55%) Cisco Certification
11 3 (0.55%) HP ASE
11 3 (0.55%) Oracle Certification
12 2 (0.36%) CCNA
12 2 (0.36%) ITIL Certification
12 2 (0.36%) OCA
12 2 (0.36%) RHCA
Quality Assurance & Compliance
1 15 (2.73%) QA
2 9 (1.64%) GCP
3 6 (1.09%) TARGET2
4 5 (0.91%) Data Quality
4 5 (0.91%) MiFID
4 5 (0.91%) SLA
5 3 (0.55%) Basel III
5 3 (0.55%) EMIR
5 3 (0.55%) FATCA
5 3 (0.55%) GDPR
5 3 (0.55%) ISO/IEC 27001
5 3 (0.55%) Solvency II
6 2 (0.36%) PCI DSS
6 2 (0.36%) SEPA
7 1 (0.18%) ISO 20022
7 1 (0.18%) ISO 8583
System Software
1 158 (28.78%) Docker
2 25 (4.55%) Active Directory
3 19 (3.46%) VMware ESXi
4 18 (3.28%) HDFS
5 17 (3.10%) VMware Infrastructure
6 9 (1.64%) vSphere
7 8 (1.46%) Apache ZooKeeper
8 7 (1.28%) vCloud
8 7 (1.28%) Virtual Machines
9 6 (1.09%) Apache Flume
9 6 (1.09%) Hyper-V
10 5 (0.91%) NFS
11 4 (0.73%) Oracle RAC
11 4 (0.73%) VirtualBox
12 3 (0.55%) Firmware
12 3 (0.55%) KVM
13 2 (0.36%) Ceph
13 2 (0.36%) iptables
13 2 (0.36%) Xen
13 2 (0.36%) XenApp
Systems Management
1 103 (18.76%) Ansible
2 75 (13.66%) Puppet
3 72 (13.11%) Terraform
4 64 (11.66%) Kubernetes
5 36 (6.56%) Opscode Chef
6 33 (6.01%) Docker Swarm
7 26 (4.74%) Grafana
8 18 (3.28%) Prometheus
9 17 (3.10%) Nagios
10 14 (2.55%) Icinga
10 14 (2.55%) Kibana
10 14 (2.55%) Mesos
11 13 (2.37%) Salt
12 11 (2.00%) Marathon
13 10 (1.82%) Oozie
14 9 (1.64%) logstash
14 9 (1.64%) PingFederate
15 7 (1.28%) Hadoop YARN
15 7 (1.28%) Nessus
16 6 (1.09%) Sysdig
Vendors
1 72 (13.11%) Red Hat
2 49 (8.93%) VMware
3 48 (8.74%) Oracle
4 45 (8.20%) Microsoft
5 29 (5.28%) Google
6 26 (4.74%) Splunk
7 24 (4.37%) Sybase
7 24 (4.37%) TIBCO
8 21 (3.83%) ION Trading
9 18 (3.28%) Cisco
10 14 (2.55%) Atlassian
10 14 (2.55%) IBM
10 14 (2.55%) SaltStack
11 12 (2.19%) Cloudera
11 12 (2.19%) Hortonworks
12 11 (2.00%) HP
13 9 (1.64%) EMC
14 8 (1.46%) Qualys
14 8 (1.46%) Tableau
14 8 (1.46%) Veritas