Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire 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 November 2017 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
East of England > Hertfordshire
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 15 11 19
Rank change year-on-year -4 +8 -1
Contract jobs citing Linux 127 123 112
As % of all contract IT jobs advertised in Hertfordshire 8.04% 8.79% 7.02%
As % of the Operating Systems category 37.69% 41.41% 27.38%
Number of daily rates quoted 59 65 46
Hertfordshire median daily rate £430 £338 £350
Median daily rate % change year-on-year +27.41% -3.57% -14.37%
10th Percentile £231 £184 £280
90th Percentile £588 £475 £559
East of England median daily rate £425 £375 £400
% change year-on-year +13.33% -6.25% -
Number of hourly rates quoted 10 0 4
Hertfordshire median hourly rate £40.75 - £45.00
10th Percentile £28.78 - £40.73
90th Percentile £47.25 - £60.00
East of England median hourly rate £42.00 £35.00 £37.50
% change year-on-year +20.00% -6.67% -

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 Hertfordshire with a requirement for operating system skills.

All Operating Systems
Hertfordshire
Contract vacancies with a requirement for operating system skills 337 297 409
As % of all contract IT jobs advertised in Hertfordshire 21.33% 21.23% 25.64%
Number of daily rates quoted 159 156 200
Hertfordshire median daily rate £370 £368 £335
Median daily rate % change year-on-year +0.68% +9.70% -4.29%
10th Percentile £120 £169 £120
90th Percentile £550 £522 £488
East of England median daily rate £358 £350 £350
% change year-on-year +2.14% - +1.82%
Number of hourly rates quoted 53 18 48
Hertfordshire median hourly rate £14.50 £13.75 £15.00
Median hourly rate % change year-on-year +5.45% -8.33% +3.45%
10th Percentile £11.05 £10.00 £8.75
90th Percentile £47.00 £20.00 £38.75
East of England median hourly rate £18.00 £16.50 £17.50
% change year-on-year +9.09% -5.71% +6.06%

Linux
Job Vacancy Trend in Hertfordshire

Job postings citing Linux as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for Linux in Hertfordshire

Linux
Contractor Daily Rate Trend in Hertfordshire

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Linux in Hertfordshire.

Contractor daily rate trend for Linux in Hertfordshire

Linux
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing Linux in Hertfordshire over the 6 months to 22 November 2017.

Contractor daily rate histogram for Linux in Hertfordshire

Linux
Contractor Hourly Rate Trend in Hertfordshire

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Linux in Hertfordshire.

Contractor hourly rate trend for Linux in Hertfordshire

Linux
Contractor Hourly Rate Histogram in Hertfordshire

The hourly rate distribution of IT jobs citing Linux in Hertfordshire over the 6 months to 22 November 2017.

Contractor hourly rate histogram for Linux in Hertfordshire

Linux
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Linux within the Hertfordshire region over the 6 months to 22 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford -10 30 £525 +10.53% 5
Stevenage -14 12 - - 2
Hatfield +2 11 £550 +69.23% 7
Hemel Hempstead +4 10 £375 - 5
Rickmansworth 0 8 £525 +16.67% 1
Welwyn Garden City +8 7 £280 +86.67% 6
Hitchin +3 1 £350 -2.78% 1
St Albans -10 1 £463 +42.31% 4
Bishop's Stortford - 1 - - 1
Linux
East of England

For the 6 months to 22 November 2017, IT contractor jobs citing Linux also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Hertfordshire region with a requirement for Linux.

1 53 (41.73%) Windows
2 42 (33.07%) Unix
3 32 (25.20%) Python
4 30 (23.62%) SQL
5 29 (22.83%) Agile Software Development
6 27 (21.26%) MySQL
7 25 (19.69%) E-Commerce
8 24 (18.90%) Red Hat
9 23 (18.11%) Java
9 23 (18.11%) Perl
9 23 (18.11%) Ansible
10 22 (17.32%) Oracle
11 21 (16.54%) DevOps
12 19 (14.96%) Red Hat Enterprise Linux
13 18 (14.17%) Security Cleared
13 18 (14.17%) Amazon AWS
13 18 (14.17%) PHP
13 18 (14.17%) Solaris
13 18 (14.17%) Apache
13 18 (14.17%) VMware
14 17 (13.39%) Telecoms
14 17 (13.39%) Configuration Management
14 17 (13.39%) Puppet
14 17 (13.39%) Docker
14 17 (13.39%) Opscode Chef
15 16 (12.60%) JavaScript
15 16 (12.60%) Firewall
15 16 (12.60%) MVC
16 14 (11.02%) DB2
16 14 (11.02%) Bash Shell

Linux
Co-occurring IT Skills in Hertfordshire 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 18 (14.17%) Apache
2 11 (8.66%) OpenStack
2 11 (8.66%) Tomcat
3 9 (7.09%) Confluence
4 7 (5.51%) Cloud Foundry
4 7 (5.51%) nginx
5 5 (3.94%) JBoss
5 5 (3.94%) MQSeries
5 5 (3.94%) MS Exchange
6 4 (3.15%) Elasticsearch
6 4 (3.15%) Exchange Server 2000
6 4 (3.15%) Exchange Server 2003
6 4 (3.15%) Exchange Server 5.5
7 2 (1.57%) IIS
7 2 (1.57%) WebSphere
7 2 (1.57%) WebSphere Application Server
8 1 (0.79%) CMS
8 1 (0.79%) Exchange Server 2010
8 1 (0.79%) IBM HTTP Server
8 1 (0.79%) SharePoint
Applications
1 6 (4.72%) HipChat
2 4 (3.15%) Microsoft Office
Business Applications
1 6 (4.72%) Magento
2 2 (1.57%) Payment Gateway
Cloud Services
1 18 (14.17%) Amazon AWS
2 11 (8.66%) Microsoft Azure
3 8 (6.30%) AWS CloudFormation
4 7 (5.51%) Google Cloud Platform
5 2 (1.57%) Amazon CloudWatch
5 2 (1.57%) Amazon ElastiCache
5 2 (1.57%) Amazon S3
5 2 (1.57%) AWS Lambda
5 2 (1.57%) PaaS
5 2 (1.57%) Route 53
5 2 (1.57%) Serverless
5 2 (1.57%) Virtual Private Cloud
6 1 (0.79%) Office 365
Communications & Networking
1 16 (12.60%) Firewall
2 11 (8.66%) Internet
3 8 (6.30%) LAN
3 8 (6.30%) SSL
4 6 (4.72%) TCP/IP
5 5 (3.94%) HTTP
5 5 (3.94%) SAN
5 5 (3.94%) VLAN
6 4 (3.15%) Diameter Protocol
6 4 (3.15%) IPsec
6 4 (3.15%) MVNO
6 4 (3.15%) SS7
6 4 (3.15%) Value-Added Service
6 4 (3.15%) VoLTE
6 4 (3.15%) VoWiFi
6 4 (3.15%) VPN
6 4 (3.15%) WAN
6 4 (3.15%) X.500
7 3 (2.36%) iSCSI
7 3 (2.36%) Wi-Fi
Database & Business Intelligence
1 27 (21.26%) MySQL
2 14 (11.02%) DB2
3 13 (10.24%) Relational Database
4 12 (9.45%) PostgreSQL
5 10 (7.87%) Oracle Database
6 9 (7.09%) MongoDB
7 8 (6.30%) RDBMS
7 8 (6.30%) SQL Server
8 5 (3.94%) DbVisualizer
8 5 (3.94%) Sybase ASE
9 3 (2.36%) Amazon RDS
9 3 (2.36%) Redis
10 2 (1.57%) NoSQL
11 1 (0.79%) Apache Cassandra
11 1 (0.79%) Jackrabbit
11 1 (0.79%) Oracle Database 11g
11 1 (0.79%) Oracle Database 12c
11 1 (0.79%) Oracle Exadata
11 1 (0.79%) SQL Server 2005
11 1 (0.79%) SQL Server 2008
Development Applications
1 12 (9.45%) Git (software)
2 9 (7.09%) JIRA
3 8 (6.30%) Jenkins
3 8 (6.30%) Maven
4 7 (5.51%) Bitbucket
4 7 (5.51%) JUnit
5 6 (4.72%) JMeter
5 6 (4.72%) Mockito
5 6 (4.72%) Subversion
6 5 (3.94%) Eclipse
6 5 (3.94%) LoadRunner
6 5 (3.94%) Log4j
6 5 (3.94%) The Grinder
7 4 (3.15%) Sonatype Nexus
7 4 (3.15%) Talend Open Studio
7 4 (3.15%) Vagrant
8 3 (2.36%) ClearQuest
8 3 (2.36%) Gradle
8 3 (2.36%) Mercurial
8 3 (2.36%) Selenium
General
1 17 (13.39%) Telecoms
2 12 (9.45%) Games
3 8 (6.30%) Finance
4 4 (3.15%) Avionics
4 4 (3.15%) Billing
5 3 (2.36%) Automotive
5 3 (2.36%) Retail
6 2 (1.57%) Financial Institution
Job Titles
1 29 (22.83%) Developer
2 14 (11.02%) Administrator
3 12 (9.45%) Systems Administrator
4 10 (7.87%) Network Engineer
5 9 (7.09%) Consultant
6 8 (6.30%) Linux Administrator
6 8 (6.30%) Linux Systems Administrator
7 7 (5.51%) Analyst
7 7 (5.51%) DevOps Engineer
8 6 (4.72%) Lead Developer
8 6 (4.72%) Security Engineer
8 6 (4.72%) Senior Developer
9 5 (3.94%) Magento Developer
9 5 (3.94%) Performance Consultant
9 5 (3.94%) Technical Leader
9 5 (3.94%) Validation Engineer
10 4 (3.15%) Design Engineer
10 4 (3.15%) Java Developer
10 4 (3.15%) Network Design Engineer
10 4 (3.15%) Support Analyst
Libraries, Frameworks & Software Standards
1 13 (10.24%) HTML
2 12 (9.45%) LAMP
3 11 (8.66%) CSS
3 11 (8.66%) Web Services
4 9 (7.09%) LEMP Stack
4 9 (7.09%) XML
5 8 (6.30%) JSON
5 8 (6.30%) Spring
6 7 (5.51%) AngularJS
6 7 (5.51%) JSP
7 6 (4.72%) .NET
7 6 (4.72%) boto
7 6 (4.72%) J2EE
7 6 (4.72%) JMS
7 6 (4.72%) REST
7 6 (4.72%) Spring Boot
7 6 (4.72%) XHTML
8 5 (3.94%) HTML5
8 5 (3.94%) Laravel
8 5 (3.94%) Symfony
Miscellaneous
1 12 (9.45%) Analytical Skills
2 8 (6.30%) Computer Science
2 8 (6.30%) Management Information System
3 6 (4.72%) Linux Command Line
4 5 (3.94%) Distributed Denial-of-Service
5 4 (3.15%) Embedded Systems
5 4 (3.15%) Mobile App
6 3 (2.36%) Algorithms
6 3 (2.36%) Data Centre
6 3 (2.36%) Fintech
6 3 (2.36%) Greenfield Project
7 2 (1.57%) Client/Server
7 2 (1.57%) Clustering
7 2 (1.57%) Derivative
7 2 (1.57%) Public Cloud
8 1 (0.79%) CCTV
8 1 (0.79%) EMV
8 1 (0.79%) PDA
8 1 (0.79%) PKI
8 1 (0.79%) Smartcard
Operating Systems
1 53 (41.73%) Windows
2 42 (33.07%) Unix
3 19 (14.96%) Red Hat Enterprise Linux
4 18 (14.17%) Solaris
5 13 (10.24%) Windows Server
6 9 (7.09%) CentOS
6 9 (7.09%) HPUX
7 5 (3.94%) AIX
7 5 (3.94%) Ubuntu
7 5 (3.94%) Windows Server 2012
8 4 (3.15%) Windows 2000 Server
9 3 (2.36%) Windows 7
10 2 (1.57%) DC/OS
10 2 (1.57%) Kali Linux
10 2 (1.57%) Windows Server 2003
11 1 (0.79%) CoreOS
11 1 (0.79%) Debian
11 1 (0.79%) Mac OS X
11 1 (0.79%) Mac OS X Server
11 1 (0.79%) Windows Embedded Compact
Processes & Methodologies
1 29 (22.83%) Agile Software Development
2 25 (19.69%) E-Commerce
3 21 (16.54%) DevOps
4 17 (13.39%) Configuration Management
5 16 (12.60%) MVC
6 12 (9.45%) OO
6 12 (9.45%) Software Engineering
7 9 (7.09%) Cybersecurity
7 9 (7.09%) High Availability
7 9 (7.09%) Scrum
8 8 (6.30%) Continuous Integration
9 7 (5.51%) Disaster Recovery
9 7 (5.51%) Open Source
9 7 (5.51%) Penetration Testing
9 7 (5.51%) Risk Management
9 7 (5.51%) SIEM
9 7 (5.51%) Validation
10 6 (4.72%) Kanban
10 6 (4.72%) Network Design
10 6 (4.72%) TDD
Programming Languages
1 32 (25.20%) Python
2 30 (23.62%) SQL
3 23 (18.11%) Java
3 23 (18.11%) Perl
4 18 (14.17%) PHP
5 16 (12.60%) JavaScript
6 14 (11.02%) Bash Shell
7 11 (8.66%) C
8 10 (7.87%) Ruby
8 10 (7.87%) Shell Script
9 9 (7.09%) PowerShell
10 6 (4.72%) AWK
11 4 (3.15%) PL/SQL
12 3 (2.36%) C++
13 2 (1.57%) C#
13 2 (1.57%) ES6
13 2 (1.57%) Go
13 2 (1.57%) T-SQL
14 1 (0.79%) ANSI C
14 1 (0.79%) Scala
Qualifications
1 18 (14.17%) Security Cleared
2 10 (7.87%) Degree
3 7 (5.51%) CISSP
3 7 (5.51%) SC Cleared
4 5 (3.94%) CISM
4 5 (3.94%) CompTIA Security+
4 5 (3.94%) DV Cleared
4 5 (3.94%) Security+ Certification
5 4 (3.15%) HNC
6 3 (2.36%) HND
6 3 (2.36%) ITIL Certification
6 3 (2.36%) RHCE
7 2 (1.57%) RHCA
8 1 (0.79%) CCNA
8 1 (0.79%) CCNP
8 1 (0.79%) Cisco Certification
8 1 (0.79%) Computer Science Degree
8 1 (0.79%) DBS Check
Quality Assurance & Compliance
1 7 (5.51%) ISO/IEC 27001
2 6 (4.72%) GCP
3 2 (1.57%) ECSS
3 2 (1.57%) Sarbanes-Oxley
4 1 (0.79%) AS 2805
4 1 (0.79%) ISO 8583
4 1 (0.79%) PCI DSS
4 1 (0.79%) PMO
4 1 (0.79%) QA
System Software
1 17 (13.39%) Docker
2 10 (7.87%) VMware Infrastructure
3 8 (6.30%) Active Directory
4 6 (4.72%) Virtual Servers
5 4 (3.15%) iptables
5 4 (3.15%) Samba
6 3 (2.36%) Cygwin
6 3 (2.36%) Virtual Desktop
6 3 (2.36%) VMware ESXi
6 3 (2.36%) Xen
6 3 (2.36%) XenApp
6 3 (2.36%) XenDesktop
7 2 (1.57%) VMware NSX
7 2 (1.57%) vSphere
8 1 (0.79%) Hyper-V
8 1 (0.79%) LXC
8 1 (0.79%) Oracle RAC
Systems Management
1 23 (18.11%) Ansible
2 17 (13.39%) Opscode Chef
2 17 (13.39%) Puppet
3 12 (9.45%) Kubernetes
4 9 (7.09%) Mesos
5 7 (5.51%) Terraform
6 6 (4.72%) Docker Swarm
6 6 (4.72%) Rancher
7 5 (3.94%) Grafana
7 5 (3.94%) Symantec Endpoint Protection
8 4 (3.15%) Red Hat Satellite
8 4 (3.15%) WSUS
9 3 (2.36%) SCCM
10 2 (1.57%) Marathon
10 2 (1.57%) Nessus
11 1 (0.79%) Data Guard
11 1 (0.79%) vCenter Server
11 1 (0.79%) WMI
11 1 (0.79%) yum
11 1 (0.79%) ZABBIX
Vendors
1 24 (18.90%) Red Hat
2 22 (17.32%) Oracle
3 18 (14.17%) VMware
4 10 (7.87%) Atlassian
4 10 (7.87%) Microsoft
5 9 (7.09%) Cisco
6 7 (5.51%) Citrix
6 7 (5.51%) IBM
7 6 (4.72%) Sun
7 6 (4.72%) Sybase
7 6 (4.72%) Zend
8 5 (3.94%) AppDynamics
8 5 (3.94%) Dynatrace
8 5 (3.94%) HP
8 5 (3.94%) New Relic
8 5 (3.94%) Symantec
9 4 (3.15%) NetApp
9 4 (3.15%) Nokia
9 4 (3.15%) Talend
9 4 (3.15%) Tekelec