Period
to 12 December 2018

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 12 December 2018 with a comparison to the same period in the previous 2 years.

Linux
Hertfordshire > Welwyn Garden City
6 months to
12 Dec 2018
Same period 2017 Same period 2016
Rank 23 7 6
Rank change year-on-year -16 -1 +23
Permanent jobs citing Linux 45 45 43
As % of all permanent IT jobs advertised in Welwyn Garden City 10.90% 21.13% 19.11%
As % of the Operating Systems category 35.71% 50.56% 59.72%
Number of salaries quoted 5 19 43
Welwyn Garden City median annual salary £72,000 £50,000 £50,000
Median salary % change year-on-year +44.00% - -13.04%
10th Percentile £64,050 £31,750 £31,250
90th Percentile £80,550 £71,250 £74,000
Hertfordshire median annual salary £60,000 £52,500 £50,000
% change year-on-year +14.29% +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 126 89 72
As % of all permanent IT jobs advertised in Welwyn Garden City 30.51% 41.78% 32.00%
Number of salaries quoted 30 59 61
Welwyn Garden City median annual salary £46,250 £37,000 £50,000
Median salary % change year-on-year +25.00% -26.00% +5.26%
10th Percentile £21,925 £26,200 £31,250
90th Percentile £72,500 £65,000 £70,000
Hertfordshire median annual salary £45,000 £42,500 £45,000
% change year-on-year +5.88% -5.56% +5.88%

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

For the 6 months to 12 December 2018, IT 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 permanent job ads across the Welwyn Garden City region with a requirement for Linux.

1 36 (80.00%) Agile Software Development
2 34 (75.56%) Python
2 34 (75.56%) SSCP
2 34 (75.56%) SIEM
2 34 (75.56%) DevOps
3 31 (68.89%) Amazon AWS
4 29 (64.44%) Security Architecture
4 29 (64.44%) Performance Monitoring
4 29 (64.44%) Application Performance Monitoring
4 29 (64.44%) Identity Access Management
4 29 (64.44%) Security Operations
4 29 (64.44%) Security Operations Centre
5 26 (57.78%) DNS
6 24 (53.33%) Microsoft
6 24 (53.33%) Firewall
7 22 (48.89%) ICMP
7 22 (48.89%) GCIA
7 22 (48.89%) GSEC
7 22 (48.89%) GCIH
7 22 (48.89%) Information Security
7 22 (48.89%) Mac OS X
7 22 (48.89%) DHCP
7 22 (48.89%) HTTP
7 22 (48.89%) SNMP
7 22 (48.89%) TCP/IP
7 22 (48.89%) Java
7 22 (48.89%) Technical Analysis
7 22 (48.89%) Splunk
7 22 (48.89%) Degree
8 20 (44.44%) Microsoft Azure

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 5 (11.11%) Apache
1 5 (11.11%) IIS
2 2 (4.44%) OpenStack
2 2 (4.44%) SharePoint
2 2 (4.44%) Skype for Business
Cloud Services
1 31 (68.89%) Amazon AWS
2 20 (44.44%) Microsoft Azure
3 17 (37.78%) GitHub
4 5 (11.11%) Cloud Computing
4 5 (11.11%) Google Cloud Platform
Communications & Networking
1 26 (57.78%) DNS
2 24 (53.33%) Firewall
3 22 (48.89%) DHCP
3 22 (48.89%) HTTP
3 22 (48.89%) ICMP
3 22 (48.89%) SNMP
3 22 (48.89%) TCP/IP
4 5 (11.11%) Internet
4 5 (11.11%) VPN
4 5 (11.11%) Wireless
5 2 (4.44%) Cisco Nexus
5 2 (4.44%) FabricPath
5 2 (4.44%) Skype
5 2 (4.44%) VLAN
Database & Business Intelligence
1 6 (13.33%) Oracle Exadata
2 1 (2.22%) NoSQL
Development Applications
1 17 (37.78%) Jenkins
1 17 (37.78%) JIRA
2 12 (26.67%) Metasploit
3 4 (8.89%) Octopus Deploy
4 2 (4.44%) Vagrant
General
1 11 (24.44%) Retail
2 2 (4.44%) Finance
Job Titles
1 29 (64.44%) Security Engineer
2 12 (26.67%) Vulnerability Management Engineer
3 10 (22.22%) SIEM Engineer
3 10 (22.22%) SOC Engineer
4 6 (13.33%) Head of Engineering
4 6 (13.33%) Head of Infrastructure
5 5 (11.11%) Analyst
5 5 (11.11%) SOC Analyst
6 4 (8.89%) Technical Leader
7 1 (2.22%) C# Developer
7 1 (2.22%) C# Software Developer
7 1 (2.22%) Developer
7 1 (2.22%) Software Developer
Libraries, Frameworks & Software Standards
1 5 (11.11%) Elastic Stack
2 2 (4.44%) REST
3 1 (2.22%) .NET
3 1 (2.22%) .NET Core
3 1 (2.22%) ASP.NET Web API
Miscellaneous
1 29 (64.44%) Security Operations Centre
2 17 (37.78%) Analytical Skills
2 17 (37.78%) Management Information System
2 17 (37.78%) Self-Motivation
3 6 (13.33%) Mainframe
4 5 (11.11%) Cyber Kill Chain
4 5 (11.11%) Data Centre
4 5 (11.11%) Enterprise Software
4 5 (11.11%) Linux Command Line
5 2 (4.44%) Hybrid Cloud
Operating Systems
1 22 (48.89%) Mac OS X
2 17 (37.78%) Kali Linux
3 10 (22.22%) Windows
4 4 (8.89%) CentOS
4 4 (8.89%) Ubuntu
4 4 (8.89%) Windows Server
5 2 (4.44%) Windows Server 2003
5 2 (4.44%) Windows Server 2012
Processes & Methodologies
1 36 (80.00%) Agile Software Development
2 34 (75.56%) DevOps
2 34 (75.56%) SIEM
3 29 (64.44%) Application Performance Monitoring
3 29 (64.44%) Identity Access Management
3 29 (64.44%) Performance Monitoring
3 29 (64.44%) Security Architecture
3 29 (64.44%) Security Operations
4 22 (48.89%) Information Security
4 22 (48.89%) Technical Analysis
5 17 (37.78%) Analytical Thinking
5 17 (37.78%) Critical Thinking
5 17 (37.78%) Open Source
5 17 (37.78%) Vulnerability Management
6 12 (26.67%) Continuous Improvement
6 12 (26.67%) Penetration Testing
6 12 (26.67%) Problem-Solving
6 12 (26.67%) Secure Coding
6 12 (26.67%) Threat Modelling
7 11 (24.44%) Systems Engineering
Programming Languages
1 34 (75.56%) Python
2 22 (48.89%) Java
3 12 (26.67%) Go
3 12 (26.67%) Perl
3 12 (26.67%) PHP
3 12 (26.67%) Ruby
4 9 (20.00%) PowerShell
5 5 (11.11%) Bash Shell
6 2 (4.44%) JavaScript
7 1 (2.22%) C#
7 1 (2.22%) SQL
Qualifications
1 34 (75.56%) SSCP
2 22 (48.89%) Degree
2 22 (48.89%) GCIA
2 22 (48.89%) GCIH
2 22 (48.89%) GSEC
3 17 (37.78%) CEH
3 17 (37.78%) CompTIA Security+
4 12 (26.67%) CISA
4 12 (26.67%) CISM
4 12 (26.67%) CISSP
4 12 (26.67%) CSSLP
4 12 (26.67%) GIAC
4 12 (26.67%) SANS
5 5 (11.11%) A+ Certification
5 5 (11.11%) CCENT
5 5 (11.11%) CCNA
5 5 (11.11%) Cisco Certification
5 5 (11.11%) Network+ Certification
5 5 (11.11%) OSCP
Quality Assurance & Compliance
1 4 (8.89%) PCI DSS
System Software
1 9 (20.00%) Active Directory
2 4 (8.89%) VMware Infrastructure
2 4 (8.89%) VMware NSX
2 4 (8.89%) vSphere
3 3 (6.67%) Docker
4 2 (4.44%) NFS
Systems Management
1 12 (26.67%) Nessus
1 12 (26.67%) Nmap
2 5 (11.11%) QRadar
3 4 (8.89%) vRealize
3 4 (8.89%) vRealize Orchestrator
4 2 (4.44%) Docker Swarm
4 2 (4.44%) Grafana
4 2 (4.44%) Kubernetes
4 2 (4.44%) SCCM
4 2 (4.44%) SCOM
4 2 (4.44%) SCOrch
4 2 (4.44%) Terraform
4 2 (4.44%) vCenter Server
Vendors
1 24 (53.33%) Microsoft
2 22 (48.89%) Splunk
3 12 (26.67%) Netsparker
3 12 (26.67%) Qualys
4 4 (8.89%) VMware
5 2 (4.44%) Cisco
5 2 (4.44%) CommVault
5 2 (4.44%) EXTOL
5 2 (4.44%) HP
5 2 (4.44%) NetApp
5 2 (4.44%) SolarWinds