Period
to 16 July 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 16 July 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
16 Jul 2018
Same period 2017 Same period 2016
Rank 19 12 12
Rank change year-on-year -7 0 +8
Contract jobs citing Linux 575 615 667
As % of all contract IT jobs advertised in the City of London 8.10% 9.52% 9.78%
As % of the Operating Systems category 39.12% 45.90% 45.97%
Number of daily rates quoted 489 504 561
City of London median daily rate £535 £525 £475
Median daily rate % change year-on-year +1.90% +10.53% -
10th Percentile £375 £375 £338
90th Percentile £700 £650 £663
Central London median daily rate £528 £525 £475
% change year-on-year +0.48% +10.53% +2.43%
Number of hourly rates quoted 3 0 1
City of London median hourly rate £32.00 - £22.00
10th Percentile £23.20 - £20.00
90th Percentile £33.00 - £24.00
Central London median hourly rate £32.00 - £22.00

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 1,470 1,340 1,451
As % of all contract IT jobs advertised in the City of London 20.72% 20.75% 21.29%
Number of daily rates quoted 1,150 1,051 1,177
City of London median daily rate £500 £475 £475
Median daily rate % change year-on-year +5.26% - +11.76%
10th Percentile £212 £250 £263
90th Percentile £655 £650 £625
Central London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 62 29 40
City of London median hourly rate £18.85 £17.00 £19.00
Median hourly rate % change year-on-year +10.88% -10.53% +0.80%
10th Percentile £14.08 £12.70 £11.25
90th Percentile £23.50 £26.23 £24.33
Central London median hourly rate £19.63 £17.50 £19.00
% change year-on-year +12.14% -7.89% +1.60%

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 16 July 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 16 July 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.

1 211 (36.70%) Amazon AWS
2 206 (35.83%) Agile Software Development
3 204 (35.48%) Java
4 187 (32.52%) Finance
5 180 (31.30%) DevOps
6 176 (30.61%) Docker
7 169 (29.39%) Python
8 159 (27.65%) Unix
9 129 (22.43%) Windows
10 119 (20.70%) Jenkins
11 114 (19.83%) Git (software)
12 104 (18.09%) Bash Shell
13 100 (17.39%) Ansible
14 97 (16.87%) JavaScript
15 96 (16.70%) Banking
16 86 (14.96%) MongoDB
17 85 (14.78%) Red Hat
18 83 (14.43%) SQL
19 82 (14.26%) Puppet
19 82 (14.26%) Kubernetes
20 81 (14.09%) Kafka
21 80 (13.91%) TDD
22 78 (13.57%) Continuous Integration
23 76 (13.22%) Terraform
24 73 (12.70%) Microsoft Azure
25 71 (12.35%) HTML
26 70 (12.17%) Java 8
27 69 (12.00%) Microservices
28 67 (11.65%) Red Hat Enterprise Linux
29 63 (10.96%) 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 50 (8.70%) Apache Spark
2 44 (7.65%) Apache
3 31 (5.39%) Elasticsearch
4 19 (3.30%) Confluence
5 18 (3.13%) Tomcat
6 13 (2.26%) JBoss
6 13 (2.26%) nginx
7 11 (1.91%) IIS
8 10 (1.74%) CMS
9 9 (1.57%) Apache Solr
9 9 (1.57%) MS Exchange
10 8 (1.39%) WebLogic
11 7 (1.22%) WebSphere
12 6 (1.04%) Cloud Foundry
12 6 (1.04%) OpenStack
13 5 (0.87%) Adobe Experience Manager
13 5 (0.87%) SharePoint
14 4 (0.70%) Drupal
14 4 (0.70%) Jupyter
14 4 (0.70%) Oracle SOA Suite
Applications
1 9 (1.57%) Microsoft Office
2 7 (1.22%) Microsoft Excel
3 4 (0.70%) Spreadsheet
4 2 (0.35%) Microsoft PowerPoint
4 2 (0.35%) Microsoft Project
5 1 (0.17%) MS Visio
5 1 (0.17%) Stata
Business Applications
1 27 (4.70%) ION MarketView
2 5 (0.87%) Salesforce.com CRM
3 3 (0.52%) RMDS
4 2 (0.35%) Kondor
4 2 (0.35%) Temenos T24
5 1 (0.17%) Bloomberg TOMS
5 1 (0.17%) Endur
5 1 (0.17%) OpenLink RightAngle
5 1 (0.17%) Oracle Applications
5 1 (0.17%) Oracle BPM
5 1 (0.17%) Oracle Cash Management
5 1 (0.17%) Oracle EBS
5 1 (0.17%) WebTrends
Cloud Services
1 211 (36.70%) Amazon AWS
2 73 (12.70%) Microsoft Azure
3 50 (8.70%) GitHub
4 32 (5.57%) Heroku
5 30 (5.22%) Amazon EC2
6 26 (4.52%) AWS CloudFormation
7 25 (4.35%) Amazon S3
7 25 (4.35%) PaaS
8 24 (4.17%) AWS Lambda
8 24 (4.17%) Serverless
9 23 (4.00%) Route 53
10 22 (3.83%) Virtual Private Cloud
11 20 (3.48%) Amazon CloudWatch
12 19 (3.30%) CloudFront
13 18 (3.13%) Google Cloud Platform
13 18 (3.13%) IaaS
14 16 (2.78%) SaaS
15 14 (2.43%) OpenShift
16 13 (2.26%) Cloud Computing
17 12 (2.09%) Amazon ELB
Communications & Networking
1 61 (10.61%) DNS
2 57 (9.91%) TCP/IP
3 55 (9.57%) SSL
4 45 (7.83%) HTTP
5 42 (7.30%) Firewall
6 35 (6.09%) FTP
7 12 (2.09%) DHCP
7 12 (2.09%) Internet
8 10 (1.74%) LAN
8 10 (1.74%) VPN
9 9 (1.57%) Network Security
10 8 (1.39%) Kerberos
10 8 (1.39%) SAN
11 7 (1.22%) AMQP
12 6 (1.04%) WAN
13 5 (0.87%) Intrusion Detection
13 5 (0.87%) IPsec
13 5 (0.87%) NAS
13 5 (0.87%) SSH
13 5 (0.87%) Wireshark
Database & Business Intelligence
1 86 (14.96%) MongoDB
2 50 (8.70%) PostgreSQL
3 43 (7.48%) SQL Server
4 41 (7.13%) MySQL
5 40 (6.96%) NoSQL
6 39 (6.78%) Big Data
6 39 (6.78%) Hadoop
7 31 (5.39%) Relational Database
8 27 (4.70%) Amazon RDS
9 24 (4.17%) Apache Cassandra
10 19 (3.30%) Apache Hive
11 18 (3.13%) HBase
11 18 (3.13%) KDB
12 16 (2.78%) Redis
13 10 (1.74%) Amazon Redshift
14 7 (1.22%) Oracle Database
15 6 (1.04%) Data Warehouse
16 5 (0.87%) Couchbase
16 5 (0.87%) RDBMS
16 5 (0.87%) SQL Server 2008
Development Applications
1 119 (20.70%) Jenkins
2 114 (19.83%) Git (software)
3 38 (6.61%) GitLab
4 37 (6.43%) JIRA
5 31 (5.39%) Gradle
6 25 (4.35%) TeamCity
7 23 (4.00%) Cucumber
8 21 (3.65%) JUnit
9 19 (3.30%) gulp
9 19 (3.30%) Selenium
10 18 (3.13%) Maven
11 14 (2.43%) Atlassian Bamboo
11 14 (2.43%) Gatling
11 14 (2.43%) Geb
11 14 (2.43%) Spock
12 13 (2.26%) Octopus Deploy
13 12 (2.09%) Sonatype Nexus
14 11 (1.91%) Mockito
15 9 (1.57%) IntelliJ
16 8 (1.39%) Artifactory
General
1 187 (32.52%) Finance
2 96 (16.70%) Banking
3 50 (8.70%) Front Office
4 26 (4.52%) Investment Banking
5 15 (2.61%) Back Office
6 12 (2.09%) Financial Institution
7 10 (1.74%) Advertising
7 10 (1.74%) Telecoms
8 5 (0.87%) Publishing
9 4 (0.70%) Law
9 4 (0.70%) Legal
9 4 (0.70%) Mandarin Language
9 4 (0.70%) Marketing
9 4 (0.70%) Retail Banking
10 3 (0.52%) German Language
10 3 (0.52%) Spanish Language
11 2 (0.35%) Cantonese Language
11 2 (0.35%) French Language
11 2 (0.35%) Italian Language
11 2 (0.35%) Japanese Language
Job Titles
1 190 (33.04%) Developer
2 118 (20.52%) DevOps Engineer
3 93 (16.17%) Java Developer
4 57 (9.91%) Senior Developer
5 50 (8.70%) AWS Engineer
6 42 (7.30%) Senior Java Developer
7 39 (6.78%) AWS DevOps
8 37 (6.43%) Linux Engineer
9 34 (5.91%) AWS DevOps Engineer
10 31 (5.39%) Analyst
11 25 (4.35%) Administrator
12 23 (4.00%) Architect
13 21 (3.65%) Senior DevOps
14 20 (3.48%) Linux/Unix DevOps
15 19 (3.30%) Cloud Engineer
16 17 (2.96%) Python Developer
17 16 (2.78%) Agile Java Developer
17 16 (2.78%) Linux DevOps Engineer
17 16 (2.78%) Senior DevOps Engineer
17 16 (2.78%) Systems Administrator
Libraries, Frameworks & Software Standards
1 81 (14.09%) Kafka
2 71 (12.35%) HTML
3 61 (10.61%) AngularJS
4 58 (10.09%) Node.js
5 56 (9.74%) REST
6 55 (9.57%) CSS
7 49 (8.52%) HTML5
8 42 (7.30%) Spring
9 38 (6.61%) SOAP
10 35 (6.09%) Web Services
11 32 (5.57%) OAuth
11 32 (5.57%) OAuth2
12 28 (4.87%) XML
13 27 (4.70%) Dropwizard
14 26 (4.52%) React
15 24 (4.17%) Elastic Stack
15 24 (4.17%) Middleware
16 23 (4.00%) .NET
16 23 (4.00%) FIX Protocol
16 23 (4.00%) Guice
Miscellaneous
1 39 (6.78%) Analytical Skills
2 35 (6.09%) Foreign Exchange (FX)
3 34 (5.91%) Fintech
4 21 (3.65%) Device Driver
5 20 (3.48%) Data Centre
6 19 (3.30%) Fixed Income
7 18 (3.13%) Computer Science
8 17 (2.96%) Greenfield Project
8 17 (2.96%) User Experience
9 16 (2.78%) Linux Command Line
10 13 (2.26%) Hedge funds
11 11 (1.91%) Algorithms
11 11 (1.91%) Credit Risk
11 11 (1.91%) Equities
12 10 (1.74%) Cloud Native
13 8 (1.39%) Public Cloud
14 7 (1.22%) Virtual Team
15 6 (1.04%) Data Structures
15 6 (1.04%) Derivative
15 6 (1.04%) Private Cloud
Operating Systems
1 159 (27.65%) Unix
2 129 (22.43%) Windows
3 67 (11.65%) Red Hat Enterprise Linux
4 51 (8.87%) CentOS
5 46 (8.00%) Ubuntu
6 40 (6.96%) Windows Server
7 21 (3.65%) Solaris
8 15 (2.61%) Mac OS X
9 13 (2.26%) Windows Server 2008
10 10 (1.74%) Windows Server 2012
11 8 (1.39%) AIX
12 7 (1.22%) Mac OS
12 7 (1.22%) SUSE Linux Enterprise Server
13 6 (1.04%) DC/OS
13 6 (1.04%) Windows 7
14 5 (0.87%) Oracle Linux
15 4 (0.70%) CoreOS
15 4 (0.70%) Windows 10
16 2 (0.35%) VMS
16 2 (0.35%) Windows 8
Processes & Methodologies
1 206 (35.83%) Agile Software Development
2 180 (31.30%) DevOps
3 80 (13.91%) TDD
4 78 (13.57%) Continuous Integration
5 69 (12.00%) Microservices
6 63 (10.96%) Configuration Management
7 47 (8.17%) Test Automation
8 43 (7.48%) Open Source
9 41 (7.13%) Electronic Trading
10 40 (6.96%) Site Reliability Engineering
11 39 (6.78%) Deployment Automation
12 38 (6.61%) BDD
12 38 (6.61%) Continuous Delivery
13 37 (6.43%) Software Engineering
14 35 (6.09%) Analytics
14 35 (6.09%) High Availability
15 32 (5.57%) OWASP
16 27 (4.70%) Domain-Driven Design
17 26 (4.52%) ITIL
17 26 (4.52%) Migration
Programming Languages
1 204 (35.48%) Java
2 169 (29.39%) Python
3 104 (18.09%) Bash Shell
4 97 (16.87%) JavaScript
5 83 (14.43%) SQL
6 70 (12.17%) Java 8
7 52 (9.04%) Ruby
8 39 (6.78%) Go
9 38 (6.61%) Shell Script
10 37 (6.43%) TypeScript
11 32 (5.57%) Scala
12 30 (5.22%) ES6
13 28 (4.87%) C++
13 28 (4.87%) Groovy
14 26 (4.52%) C#
14 26 (4.52%) Perl
15 23 (4.00%) PowerShell
16 18 (3.13%) PHP
17 13 (2.26%) C
18 12 (2.09%) R
Qualifications
1 37 (6.43%) Security Cleared
2 23 (4.00%) SC Cleared
3 21 (3.65%) Degree
4 13 (2.26%) AWS Certification
5 10 (1.74%) CISSP
6 9 (1.57%) Computer Science Degree
7 7 (1.22%) DV Cleared
7 7 (1.22%) Microsoft Certification
8 6 (1.04%) CEH
8 6 (1.04%) RHCE
9 4 (0.70%) CISM
9 4 (0.70%) MCSA
9 4 (0.70%) SANS
10 3 (0.52%) CCNA
10 3 (0.52%) Cisco Certification
10 3 (0.52%) MCSE
11 2 (0.35%) A+ Certification
11 2 (0.35%) CompTIA Security+
11 2 (0.35%) HP ASE
11 2 (0.35%) MCP
Quality Assurance & Compliance
1 10 (1.74%) GCP
1 10 (1.74%) QA
2 6 (1.04%) SLA
3 5 (0.87%) Data Quality
3 5 (0.87%) ISO/IEC 27001
4 4 (0.70%) GDPR
5 3 (0.52%) PCI DSS
5 3 (0.52%) TARGET2
6 2 (0.35%) MiFID
6 2 (0.35%) SEPA
7 1 (0.17%) FISMA
7 1 (0.17%) HIPAA
7 1 (0.17%) ISO 20022
7 1 (0.17%) ISO 8583
7 1 (0.17%) Sarbanes-Oxley
System Software
1 176 (30.61%) Docker
2 31 (5.39%) Active Directory
3 24 (4.17%) VMware Infrastructure
4 19 (3.30%) HDFS
5 14 (2.43%) VMware ESXi
6 9 (1.57%) Apache ZooKeeper
7 8 (1.39%) vSphere
8 7 (1.22%) Apache Flume
8 7 (1.22%) VirtualBox
9 6 (1.04%) Hyper-V
10 5 (0.87%) NFS
10 5 (0.87%) Virtual Machines
11 4 (0.70%) Oracle RAC
11 4 (0.70%) vCloud
12 3 (0.52%) Firmware
12 3 (0.52%) KVM
13 2 (0.35%) Ceph
13 2 (0.35%) iptables
13 2 (0.35%) Xen
13 2 (0.35%) XenServer
Systems Management
1 100 (17.39%) Ansible
2 82 (14.26%) Kubernetes
2 82 (14.26%) Puppet
3 76 (13.22%) Terraform
4 42 (7.30%) Opscode Chef
5 35 (6.09%) Grafana
6 30 (5.22%) Docker Swarm
7 27 (4.70%) Prometheus
8 26 (4.52%) Nagios
9 21 (3.65%) Icinga
10 18 (3.13%) Kibana
11 16 (2.78%) Mesos
12 13 (2.26%) logstash
13 12 (2.09%) Marathon
14 11 (1.91%) Hadoop YARN
15 9 (1.57%) Oozie
16 8 (1.39%) Salt
16 8 (1.39%) SCCM
16 8 (1.39%) Sysdig
17 7 (1.22%) Packer
Vendors
1 85 (14.78%) Red Hat
2 48 (8.35%) VMware
3 41 (7.13%) Google
4 40 (6.96%) Microsoft
5 39 (6.78%) Oracle
6 34 (5.91%) Splunk
7 28 (4.87%) ION Trading
8 26 (4.52%) TIBCO
9 25 (4.35%) Sybase
10 21 (3.65%) Cisco
11 16 (2.78%) Atlassian
12 15 (2.61%) Hortonworks
13 13 (2.26%) IBM
14 11 (1.91%) Cloudera
14 11 (1.91%) EMC
15 10 (1.74%) HP
16 9 (1.57%) AppDynamics
16 9 (1.57%) Salesforce.com
17 8 (1.39%) Qualys
18 7 (1.22%) Hitachi