Period
to 21 February 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 21 February 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
21 Feb 2018
Same period 2017 Same period 2016
Rank 20 14 12
Rank change year-on-year -6 -2 +4
Contract jobs citing Linux 564 594 650
As % of all contract IT jobs advertised in the City of London 7.95% 9.63% 9.80%
As % of the Operating Systems category 39.33% 45.45% 44.22%
Number of daily rates quoted 489 487 538
City of London median daily rate £525 £500 £496
Median daily rate % change year-on-year +5.00% +0.76% +4.47%
10th Percentile £409 £363 £313
90th Percentile £763 £668 £675
Central London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +0.53%
Number of hourly rates quoted 0 5 13
City of London median hourly rate - £27.50 £37.50
Median hourly rate % change year-on-year - -26.67% +9.71%
Central London median hourly rate £35.00 £27.50 £37.50
% change year-on-year +27.27% -26.67% +16.86%

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 1,434 1,307 1,470
As % of all contract IT jobs advertised in the City of London 20.20% 21.19% 22.16%
Number of daily rates quoted 1,150 1,036 1,141
City of London median daily rate £500 £460 £450
Median daily rate % change year-on-year +8.70% +2.22% +9.09%
10th Percentile £263 £303 £244
90th Percentile £675 £650 £638
Central London median daily rate £483 £450 £450
% change year-on-year +7.22% - +9.09%
Number of hourly rates quoted 49 25 44
City of London median hourly rate £15.00 £21.75 £20.00
Median hourly rate % change year-on-year -31.03% +8.75% +25.00%
10th Percentile £11.25 £13.05 £12.33
90th Percentile £23.35 £79.00 £36.13
Central London median hourly rate £17.15 £19.00 £19.50
% change year-on-year -9.74% -2.56% +27.87%

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 February 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 21 February 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.

1 214 (37.94%) Java
2 197 (34.93%) Finance
3 186 (32.98%) Unix
4 155 (27.48%) Windows
5 151 (26.77%) Agile Software Development
5 151 (26.77%) DevOps
6 143 (25.35%) Amazon AWS
7 138 (24.47%) Python
8 137 (24.29%) Banking
9 116 (20.57%) SQL
10 104 (18.44%) Ansible
11 97 (17.20%) Git (software)
12 93 (16.49%) JavaScript
13 90 (15.96%) Red Hat Enterprise Linux
13 90 (15.96%) Docker
14 81 (14.36%) HTML
15 77 (13.65%) Bash Shell
16 74 (13.12%) C++
17 72 (12.77%) Foreign Exchange (FX)
18 71 (12.59%) Jenkins
19 64 (11.35%) Puppet
20 62 (10.99%) Red Hat
21 59 (10.46%) Microsoft
21 59 (10.46%) Terraform
22 57 (10.11%) Shell Script
23 56 (9.93%) Oracle
23 56 (9.93%) CSS
24 55 (9.75%) TIBCO
24 55 (9.75%) Degree
24 55 (9.75%) Electronic Trading

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 25 (4.43%) Apache Spark
1 25 (4.43%) Tomcat
2 23 (4.08%) Apache
3 19 (3.37%) JBoss
4 15 (2.66%) nginx
5 12 (2.13%) WebSphere
6 10 (1.77%) MQSeries
7 9 (1.60%) Elasticsearch
8 8 (1.42%) Confluence
9 7 (1.24%) MS Exchange
9 7 (1.24%) OpenStack
10 6 (1.06%) Apache Solr
10 6 (1.06%) IIS
10 6 (1.06%) SharePoint
10 6 (1.06%) WildFly
11 5 (0.89%) WordPress
12 4 (0.71%) Drupal
12 4 (0.71%) WebLogic
13 3 (0.53%) Oracle Coherence
13 3 (0.53%) WebSphere Application Server
Applications
1 4 (0.71%) Microsoft Excel
1 4 (0.71%) Microsoft Office
1 4 (0.71%) MS Visio
2 3 (0.53%) Spreadsheet
3 1 (0.18%) Microsoft PowerPoint
3 1 (0.18%) Photoshop
Business Applications
1 27 (4.79%) ION MarketView
2 10 (1.77%) Temenos T24
3 6 (1.06%) Kondor
4 4 (0.71%) BusinessWorks
5 3 (0.53%) Summit
6 1 (0.18%) Endur
6 1 (0.18%) OpenLink RightAngle
6 1 (0.18%) Oracle Applications
6 1 (0.18%) Oracle Cash Management
6 1 (0.18%) Oracle EBS
6 1 (0.18%) RMDS
6 1 (0.18%) WebTrends
Cloud Services
1 143 (25.35%) Amazon AWS
2 44 (7.80%) Microsoft Azure
3 26 (4.61%) AWS CloudFormation
4 17 (3.01%) Heroku
5 15 (2.66%) GitHub
6 14 (2.48%) Google Cloud Platform
7 11 (1.95%) Amazon EC2
7 11 (1.95%) IaaS
8 9 (1.60%) Amazon S3
8 9 (1.60%) Route 53
9 6 (1.06%) Amazon CloudWatch
9 6 (1.06%) Virtual Private Cloud
10 5 (0.89%) Amazon SQS
10 5 (0.89%) CloudFront
10 5 (0.89%) OpenShift
10 5 (0.89%) PaaS
11 4 (0.71%) Amazon ELB
11 4 (0.71%) AWS Lambda
11 4 (0.71%) SaaS
11 4 (0.71%) Serverless
Communications & Networking
1 37 (6.56%) HTTP
2 36 (6.38%) DNS
2 36 (6.38%) SSL
2 36 (6.38%) TCP/IP
3 29 (5.14%) Firewall
4 19 (3.37%) FTP
5 13 (2.30%) SAN
6 11 (1.95%) Kerberos
7 10 (1.77%) Network Security
8 9 (1.60%) DHCP
9 8 (1.42%) Internet
10 7 (1.24%) Intranet
10 7 (1.24%) SSH
11 6 (1.06%) Wireshark
12 5 (0.89%) Intrusion Detection
12 5 (0.89%) SWIFTNet
13 4 (0.71%) BIG-IP
13 4 (0.71%) Fibre Channel
13 4 (0.71%) NAS
13 4 (0.71%) SMTP
Database & Business Intelligence
1 41 (7.27%) MongoDB
2 40 (7.09%) MySQL
3 39 (6.91%) KDB
3 39 (6.91%) SQL Server
4 35 (6.21%) Big Data
4 35 (6.21%) PostgreSQL
5 29 (5.14%) Relational Database
6 22 (3.90%) Hadoop
7 18 (3.19%) Apache Cassandra
8 15 (2.66%) NoSQL
9 14 (2.48%) HBase
9 14 (2.48%) RDBMS
10 11 (1.95%) Apache Hive
11 10 (1.77%) Data Warehouse
12 9 (1.60%) Amazon RDS
12 9 (1.60%) Oracle Database
13 7 (1.24%) Power BI
14 6 (1.06%) Impala
14 6 (1.06%) Redis
14 6 (1.06%) Sybase ASE
Development Applications
1 97 (17.20%) Git (software)
2 71 (12.59%) Jenkins
3 35 (6.21%) Maven
4 31 (5.50%) Gradle
5 30 (5.32%) TeamCity
6 28 (4.96%) JIRA
7 24 (4.26%) Subversion
8 21 (3.72%) gulp
9 18 (3.19%) GitLab
9 18 (3.19%) Spock
10 17 (3.01%) Cucumber
11 16 (2.84%) Gatling
11 16 (2.84%) Geb
12 15 (2.66%) Selenium
13 12 (2.13%) JUnit
14 7 (1.24%) Artifactory
14 7 (1.24%) webpack
15 6 (1.06%) Bitbucket
15 6 (1.06%) CMake
15 6 (1.06%) WebDriver
General
1 197 (34.93%) Finance
2 137 (24.29%) Banking
3 51 (9.04%) Front Office
4 36 (6.38%) Investment Banking
5 18 (3.19%) Retail Banking
6 13 (2.30%) Financial Institution
7 9 (1.60%) Back Office
8 7 (1.24%) Retail
9 5 (0.89%) Marketing
9 5 (0.89%) Telecoms
10 4 (0.71%) Advertising
10 4 (0.71%) International Banking
10 4 (0.71%) Law
10 4 (0.71%) Publishing
11 3 (0.53%) Legal
11 3 (0.53%) Retail Finance
12 2 (0.35%) French Language
13 1 (0.18%) Digital Economy
13 1 (0.18%) Spanish Language
Job Titles
1 225 (39.89%) Developer
2 97 (17.20%) Java Developer
3 91 (16.13%) DevOps Engineer
4 64 (11.35%) Senior Developer
5 47 (8.33%) C++ Developer
6 45 (7.98%) Senior Java Developer
7 42 (7.45%) AWS DevOps
7 42 (7.45%) AWS Engineer
8 39 (6.91%) Linux Engineer
9 37 (6.56%) Analyst
10 36 (6.38%) AWS DevOps Engineer
11 31 (5.50%) Electronic Trading Developer
12 28 (4.96%) Administrator
12 28 (4.96%) Electronic Trading Java Developer
13 20 (3.55%) Senior DevOps
13 20 (3.55%) Systems Administrator
14 19 (3.37%) Linux/Unix DevOps
15 18 (3.19%) Agile Developer
15 18 (3.19%) Consultant
15 18 (3.19%) Security Engineer
Libraries, Frameworks & Software Standards
1 81 (14.36%) HTML
2 56 (9.93%) CSS
3 49 (8.69%) Web Services
4 46 (8.16%) FIX Protocol
5 45 (7.98%) TIBCO EMS
6 43 (7.62%) HTML5
7 41 (7.27%) Kafka
8 40 (7.09%) REST
9 38 (6.74%) Spring
10 36 (6.38%) Node.js
10 36 (6.38%) XML
11 31 (5.50%) AngularJS
12 30 (5.32%) Middleware
13 29 (5.14%) JSON
14 26 (4.61%) SOAP
15 25 (4.43%) RESTful
16 24 (4.26%) JMS
17 22 (3.90%) .NET
17 22 (3.90%) React
18 19 (3.37%) WireMock
Miscellaneous
1 72 (12.77%) Foreign Exchange (FX)
2 43 (7.62%) Analytical Skills
3 31 (5.50%) Computer Science
4 28 (4.96%) Data Structures
5 19 (3.37%) Equities
6 18 (3.19%) Algorithms
7 17 (3.01%) Data Centre
8 16 (2.84%) Fixed Income
9 13 (2.30%) Derivative
9 13 (2.30%) Management Information System
9 13 (2.30%) Market Risk
9 13 (2.30%) SWIFT
10 12 (2.13%) Credit Risk
10 12 (2.13%) Greenfield Project
11 11 (1.95%) Fintech
12 9 (1.60%) Virtual Team
13 8 (1.42%) Enterprise Software
13 8 (1.42%) Linux Command Line
13 8 (1.42%) Private Cloud
14 7 (1.24%) Public Cloud
Operating Systems
1 186 (32.98%) Unix
2 155 (27.48%) Windows
3 90 (15.96%) Red Hat Enterprise Linux
4 47 (8.33%) Windows Server
5 37 (6.56%) Solaris
6 27 (4.79%) Ubuntu
7 24 (4.26%) CentOS
8 20 (3.55%) Windows Server 2008
9 15 (2.66%) Windows Server 2012
10 14 (2.48%) Debian
11 9 (1.60%) Mac OS X
12 7 (1.24%) Windows 7
13 4 (0.71%) AIX
13 4 (0.71%) Mac OS
13 4 (0.71%) Windows 8
14 3 (0.53%) DC/OS
14 3 (0.53%) Oracle Linux
15 2 (0.35%) CoreOS
15 2 (0.35%) HPUX
15 2 (0.35%) Windows 10
Processes & Methodologies
1 151 (26.77%) Agile Software Development
1 151 (26.77%) DevOps
2 55 (9.75%) Electronic Trading
3 53 (9.40%) Continuous Integration
3 53 (9.40%) Multithreading
4 52 (9.22%) TDD
5 50 (8.87%) Configuration Management
6 44 (7.80%) Software Engineering
7 43 (7.62%) Low Latency
8 42 (7.45%) Analytics
9 39 (6.91%) SDLC
10 38 (6.74%) Integration Testing
11 37 (6.56%) Open Source
12 36 (6.38%) OO
12 36 (6.38%) Test Automation
13 35 (6.21%) BDD
13 35 (6.21%) Scrum
14 30 (5.32%) Migration
15 26 (4.61%) Microservices
16 25 (4.43%) Change Management
Programming Languages
1 214 (37.94%) Java
2 138 (24.47%) Python
3 116 (20.57%) SQL
4 93 (16.49%) JavaScript
5 77 (13.65%) Bash Shell
6 74 (13.12%) C++
7 57 (10.11%) Shell Script
8 48 (8.51%) Ruby
9 43 (7.62%) Perl
10 41 (7.27%) C#
11 37 (6.56%) Scala
12 30 (5.32%) PHP
13 29 (5.14%) Groovy
14 28 (4.96%) TypeScript
15 24 (4.26%) PowerShell
16 23 (4.08%) PL/SQL
17 22 (3.90%) ES6
18 9 (1.60%) C
18 9 (1.60%) XPath
19 7 (1.24%) Go
Qualifications
1 55 (9.75%) Degree
2 23 (4.08%) Security Cleared
3 18 (3.19%) Computer Science Degree
4 14 (2.48%) PhD
5 13 (2.30%) SC Cleared
6 8 (1.42%) AWS Certification
6 8 (1.42%) CISSP
7 7 (1.24%) Master's Degree
8 6 (1.06%) CISM
8 6 (1.06%) DV Cleared
8 6 (1.06%) RHCE
9 5 (0.89%) Cisco Certification
10 4 (0.71%) CISA
10 4 (0.71%) ITIL Certification
10 4 (0.71%) Microsoft Certification
11 3 (0.53%) HP ASE
12 2 (0.35%) (ISC)2 CCSP
12 2 (0.35%) OCA
12 2 (0.35%) Oracle Certification
12 2 (0.35%) VCP5
Quality Assurance & Compliance
1 20 (3.55%) MiFID
1 20 (3.55%) QA
2 11 (1.95%) GCP
3 6 (1.06%) TARGET2
4 5 (0.89%) SLA
5 4 (0.71%) ISO/IEC 27001
6 3 (0.53%) Basel III
6 3 (0.53%) EMIR
6 3 (0.53%) FATCA
6 3 (0.53%) PCI DSS
6 3 (0.53%) Solvency II
7 2 (0.35%) GDPR
7 2 (0.35%) ISO 8583
7 2 (0.35%) SEPA
8 1 (0.18%) AS 2805
8 1 (0.18%) ISO 20022
8 1 (0.18%) Sarbanes-Oxley
System Software
1 90 (15.96%) Docker
2 27 (4.79%) Active Directory
3 18 (3.19%) VMware ESXi
3 18 (3.19%) VMware Infrastructure
4 14 (2.48%) HDFS
5 12 (2.13%) Apache ZooKeeper
6 8 (1.42%) vSphere
7 7 (1.24%) Hyper-V
8 6 (1.06%) Apache Flume
8 6 (1.06%) vCloud
8 6 (1.06%) Virtual Machines
9 5 (0.89%) Firmware
10 4 (0.71%) KVM
10 4 (0.71%) LXC
10 4 (0.71%) Varnish
11 3 (0.53%) etcd
11 3 (0.53%) iptables
11 3 (0.53%) VirtualBox
12 2 (0.35%) XenApp
13 1 (0.18%) XenDesktop
Systems Management
1 104 (18.44%) Ansible
2 64 (11.35%) Puppet
3 59 (10.46%) Terraform
4 44 (7.80%) Kubernetes
5 41 (7.27%) Opscode Chef
6 22 (3.90%) Docker Swarm
7 14 (2.48%) Grafana
8 10 (1.77%) Kibana
9 9 (1.60%) Oozie
9 9 (1.60%) Salt
10 8 (1.42%) Mesos
11 7 (1.24%) logstash
11 7 (1.24%) Nagios
11 7 (1.24%) Nessus
12 6 (1.06%) Single Sign-On
13 5 (0.89%) Backup Exec
13 5 (0.89%) NetBackup
13 5 (0.89%) Prometheus
13 5 (0.89%) SCCM
13 5 (0.89%) vCenter Server
Vendors
1 62 (10.99%) Red Hat
2 59 (10.46%) Microsoft
3 56 (9.93%) Oracle
4 55 (9.75%) TIBCO
5 49 (8.69%) VMware
6 46 (8.16%) Sybase
7 29 (5.14%) ION Trading
8 27 (4.79%) IBM
9 18 (3.19%) Cisco
10 16 (2.84%) HP
11 14 (2.48%) Splunk
12 13 (2.30%) Google
13 12 (2.13%) SaltStack
14 10 (1.77%) CyberArk
14 10 (1.77%) Reuters
15 9 (1.60%) EMC
15 9 (1.60%) Qualys
15 9 (1.60%) Temenos
16 8 (1.42%) Tableau
17 7 (1.24%) Cloudera