Period
to 23 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Welwyn Garden City with a requirement for Linux skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Linux over the 6 months to 23 November 2017 with a comparison to the same period in the previous 2 years.

Linux
Hertfordshire > Welwyn Garden City
6 months to
23 Nov 2017
Same period 2016 Same period 2015
Rank 12 8 30
Rank change year-on-year -4 +22 -15
Permanent jobs citing Linux 36 36 10
As % of all permanent IT jobs advertised in Welwyn Garden City 16.82% 16.51% 4.48%
As % of the Operating Systems category 41.86% 52.94% 17.24%
Number of salaries quoted 20 36 9
Welwyn Garden City median annual salary £50,000 £50,000 £57,500
Median salary % change year-on-year - -13.04% +43.75%
10th Percentile £31,625 £31,250 £31,250
90th Percentile £69,000 £68,750 £61,250
Hertfordshire median annual salary £52,500 £50,000 £45,000
% change year-on-year +5.00% +11.11% -

Linux is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Welwyn Garden City with a requirement for operating system skills.

All Operating Systems
Welwyn Garden City
Permanent vacancies with a requirement for operating system skills 86 68 58
As % of all permanent IT jobs advertised in Welwyn Garden City 40.19% 31.19% 26.01%
Number of salaries quoted 66 56 31
Welwyn Garden City median annual salary £32,000 £50,000 £47,500
Median salary % change year-on-year -36.00% +5.26% +46.15%
10th Percentile £25,500 £31,250 £28,000
90th Percentile £65,000 £68,750 £58,750
Hertfordshire median annual salary £42,500 £45,000 £42,500
% change year-on-year -5.56% +5.88% +6.25%

Linux
Job Vacancy Trend in Welwyn Garden City

Job postings citing Linux as a percentage of all IT jobs advertised in Welwyn Garden City.

Job vacancy trend for Linux in Welwyn Garden City

Linux
Salary Trend in Welwyn Garden City

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Linux in Welwyn Garden City.

Salary trend for Linux in Welwyn Garden City

Linux
Salary Histogram in Welwyn Garden City

The salary distribution of IT jobs citing Linux in Welwyn Garden City over the 6 months to 23 November 2017.

Salary histogram for Linux in Welwyn Garden City

For the 6 months to 23 November 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 Welwyn Garden City region with a requirement for Linux.

1 24 (66.67%) Windows
2 19 (52.78%) Data Centre
3 18 (50.00%) VMware
4 17 (47.22%) Public Cloud
5 15 (41.67%) The Twelve-Factor App
6 14 (38.89%) DevOps
7 13 (36.11%) Software Engineering
8 12 (33.33%) Python
8 12 (33.33%) DNS
8 12 (33.33%) Infrastructure Transformation
9 11 (30.56%) OpenStack
10 10 (27.78%) SIEM
11 9 (25.00%) Bash Shell
11 9 (25.00%) Stakeholder Management
11 9 (25.00%) TCP/IP
12 8 (22.22%) Microsoft
12 8 (22.22%) DHCP
12 8 (22.22%) Unix
12 8 (22.22%) HTML
12 8 (22.22%) Cybersecurity
13 7 (19.44%) Opscode Chef
13 7 (19.44%) Puppet
14 6 (16.67%) Continuous Improvement
14 6 (16.67%) Mentoring
14 6 (16.67%) JavaScript
14 6 (16.67%) Firewall
14 6 (16.67%) Two-Factor Authentication
14 6 (16.67%) Multi-Factor Authentication
14 6 (16.67%) vCenter Server
14 6 (16.67%) VMware NSX

Linux
Co-occurring IT Skills in Welwyn Garden City 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 11 (30.56%) OpenStack
2 3 (8.33%) MS Exchange
3 1 (2.78%) Apache
3 1 (2.78%) nginx
Applications
1 3 (8.33%) Microsoft Office
Cloud Services
1 5 (13.89%) Amazon AWS
1 5 (13.89%) Microsoft Azure
2 3 (8.33%) Akamai
2 3 (8.33%) Office 365
Communications & Networking
1 12 (33.33%) DNS
2 9 (25.00%) TCP/IP
3 8 (22.22%) DHCP
4 6 (16.67%) Firewall
5 4 (11.11%) SMTP
6 3 (8.33%) 802.11
6 3 (8.33%) BGP
6 3 (8.33%) DWDM
6 3 (8.33%) EIGRP
6 3 (8.33%) HTTP
6 3 (8.33%) HTTPS
6 3 (8.33%) IGRP
6 3 (8.33%) Internet
6 3 (8.33%) IPsec
6 3 (8.33%) LAN
6 3 (8.33%) SNMP
6 3 (8.33%) SSL
6 3 (8.33%) VPN
6 3 (8.33%) WAN
6 3 (8.33%) Wi-Fi
Database & Business Intelligence
1 1 (2.78%) MySQL
Development Applications
1 3 (8.33%) Git (software)
2 1 (2.78%) Eclipse
2 1 (2.78%) Subversion
General
1 4 (11.11%) Finance
2 3 (8.33%) Law
3 2 (5.56%) Retail
4 1 (2.78%) Electronics
Job Titles
1 14 (38.89%) Systems Engineer
2 7 (19.44%) Linux Engineer
3 6 (16.67%) Security Engineer
4 5 (13.89%) Linux Systems Engineer
4 5 (13.89%) Splunk Engineer
4 5 (13.89%) VMware Engineer
5 3 (8.33%) Engineering Manager
5 3 (8.33%) Head of Engineering
5 3 (8.33%) IT Engineer
5 3 (8.33%) IT Support
5 3 (8.33%) IT Support Engineer
5 3 (8.33%) Network Systems Engineer
5 3 (8.33%) Senior Systems Engineer
5 3 (8.33%) Support Engineer
5 3 (8.33%) Systems Engineering Manager
5 3 (8.33%) Systems Manager
6 2 (5.56%) Infrastructure Engineer
6 2 (5.56%) Software Engineer
7 1 (2.78%) Embedded Software Engineer
7 1 (2.78%) Senior Software Engineer
Libraries, Frameworks & Software Standards
1 8 (22.22%) HTML
2 5 (13.89%) CSS
3 3 (8.33%) 802.1X
3 3 (8.33%) XML
4 1 (2.78%) J2EE
4 1 (2.78%) Middleware
Miscellaneous
1 19 (52.78%) Data Centre
2 17 (47.22%) Public Cloud
3 3 (8.33%) Analytical Skills
4 1 (2.78%) Computer Science
4 1 (2.78%) Management Information System
Operating Systems
1 24 (66.67%) Windows
2 8 (22.22%) Unix
3 5 (13.89%) Windows Server 2008
4 3 (8.33%) Kali Linux
4 3 (8.33%) Mac OS X
5 1 (2.78%) Red Hat Enterprise Linux
5 1 (2.78%) Windows Server
Processes & Methodologies
1 15 (41.67%) The Twelve-Factor App
2 14 (38.89%) DevOps
3 13 (36.11%) Software Engineering
4 12 (33.33%) Infrastructure Transformation
5 10 (27.78%) SIEM
6 9 (25.00%) Stakeholder Management
7 8 (22.22%) Cybersecurity
8 6 (16.67%) Continuous Improvement
8 6 (16.67%) Mentoring
8 6 (16.67%) Multi-Factor Authentication
8 6 (16.67%) Two-Factor Authentication
9 5 (13.89%) Data Loss Prevention
9 5 (13.89%) Data Modelling
10 4 (11.11%) Network Management
11 3 (8.33%) Ethical Hacking
11 3 (8.33%) Load Balancing
11 3 (8.33%) Migration
11 3 (8.33%) Mobile Device Management
11 3 (8.33%) Open Source
11 3 (8.33%) WAN Optimisation
Programming Languages
1 12 (33.33%) Python
2 9 (25.00%) Bash Shell
3 6 (16.67%) JavaScript
4 3 (8.33%) PowerShell
5 1 (2.78%) Ada
5 1 (2.78%) C#
5 1 (2.78%) C++
5 1 (2.78%) Java
Qualifications
1 5 (13.89%) CISA
1 5 (13.89%) CISM
1 5 (13.89%) CISSP
1 5 (13.89%) CompTIA Security+
1 5 (13.89%) CSSLP
1 5 (13.89%) GIAC
1 5 (13.89%) SANS
1 5 (13.89%) Security+ Certification
1 5 (13.89%) SSCP
2 3 (8.33%) CCNP
2 3 (8.33%) Cisco Certification
3 1 (2.78%) Degree
3 1 (2.78%) VMware Certified Professional (VCP)
System Software
1 6 (16.67%) VMware NSX
2 3 (8.33%) Docker
2 3 (8.33%) LXC
2 3 (8.33%) VMware ESXi
3 1 (2.78%) Firmware
3 1 (2.78%) vSphere
Systems Management
1 7 (19.44%) Opscode Chef
1 7 (19.44%) Puppet
2 6 (16.67%) vCenter Server
3 5 (13.89%) Norton AntiVirus
4 3 (8.33%) Ansible
4 3 (8.33%) Kubernetes
4 3 (8.33%) vRealize
Vendors
1 18 (50.00%) VMware
2 8 (22.22%) Microsoft
3 5 (13.89%) Red Hat
3 5 (13.89%) Sophos
3 5 (13.89%) Splunk
3 5 (13.89%) Symantec
4 3 (8.33%) Apple
4 3 (8.33%) Aruba
4 3 (8.33%) Blue Coat
4 3 (8.33%) CheckPoint
4 3 (8.33%) Cisco
4 3 (8.33%) Citrix
4 3 (8.33%) F5
4 3 (8.33%) Facebook
4 3 (8.33%) Fortinet
4 3 (8.33%) Google
4 3 (8.33%) Juniper
4 3 (8.33%) Meraki
4 3 (8.33%) Riverbed
4 3 (8.33%) Tufin