Period
to 12 November 2018

The following table provides summary statistics for permanent job vacancies advertised in Hertfordshire with a requirement for Open Source skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Open Source over the 6 months to 12 November 2018 with a comparison to the same period in the previous 2 years.

Open Source
East of England > Hertfordshire
6 months to
12 Nov 2018
Same period 2017 Same period 2016
Rank 129 97 127
Rank change year-on-year -32 +30 -24
Permanent jobs citing Open Source 79 125 94
As % of all permanent IT jobs advertised in Hertfordshire 2.01% 2.88% 2.11%
As % of the Processes & Methodologies category 2.23% 3.28% 2.34%
Number of salaries quoted 52 108 92
Hertfordshire median annual salary £60,000 £53,750 £60,000
Median salary % change year-on-year +11.63% -10.42% +14.29%
10th Percentile £32,500 £33,925 £38,750
90th Percentile £72,125 £70,750 £80,000
East of England median annual salary £52,500 £50,000 £55,000
% change year-on-year +5.00% -9.09% +10.00%

Open Source is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Hertfordshire with a requirement for process or methodology skills.

All Process and Methodology Skills
Hertfordshire
Permanent vacancies with a requirement for process or methodology skills 3,542 3,815 4,011
As % of all permanent IT jobs advertised in Hertfordshire 90.22% 87.84% 89.87%
Number of salaries quoted 2,743 3,221 3,301
Hertfordshire median annual salary £50,000 £47,500 £47,500
Median salary % change year-on-year +5.26% - +5.56%
10th Percentile £26,800 £27,000 £27,500
90th Percentile £75,000 £71,250 £72,500
East of England median annual salary £47,500 £45,500 £45,000
% change year-on-year +4.40% +1.11% -

Open Source
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for Open Source in Hertfordshire

Open Source
Salary Trend in Hertfordshire

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Open Source in Hertfordshire.

Salary trend for Open Source in Hertfordshire

Open Source
Salary Histogram in Hertfordshire

The salary distribution of IT jobs citing Open Source in Hertfordshire over the 6 months to 12 November 2018.

Salary histogram for Open Source in Hertfordshire

Open Source
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Open Source within the Hertfordshire region over the 6 months to 12 November 2018. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Welwyn Garden City -2 25 £55,000 +64.18%
Hatfield -11 21 £62,500 +4.17% 1
Watford -16 10 £70,000 +21.74% 5
Kings Langley - 5 £37,500 - 2
St Albans -11 4 £35,000 -10.26% 2
Hemel Hempstead +6 2 £40,500 -1.22%
Stevenage +6 1 £40,000 -13.98%
Radlett 0 1 £42,500 +13.33%
Open Source
East of England

For the 6 months to 12 November 2018, IT jobs citing Open Source 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 Hertfordshire region with a requirement for Open Source.

1 61 (77.22%) Agile Software Development
2 43 (54.43%) Python
3 34 (43.04%) Linux
3 34 (43.04%) Amazon AWS
4 30 (37.97%) Problem-Solving
5 27 (34.18%) DevOps
5 27 (34.18%) Software Engineering
6 26 (32.91%) Java
7 24 (30.38%) Continuous Improvement
8 21 (26.58%) Ruby
9 20 (25.32%) Microsoft Azure
10 19 (24.05%) C#
10 19 (24.05%) Retail
11 18 (22.78%) Security Architecture
11 18 (22.78%) SIEM
11 18 (22.78%) Vulnerability Management
11 18 (22.78%) .NET
11 18 (22.78%) SSCP
11 18 (22.78%) CEH
11 18 (22.78%) Google Cloud Platform
11 18 (22.78%) Kali Linux
11 18 (22.78%) CompTIA Security+
11 18 (22.78%) Security Operations
11 18 (22.78%) Security Operations Centre
12 17 (21.52%) Identity Access Management
12 17 (21.52%) Application Performance Monitoring
12 17 (21.52%) Kubernetes
12 17 (21.52%) Performance Monitoring
12 17 (21.52%) Unix
12 17 (21.52%) Go

Open Source
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 7 (8.86%) IIS
2 6 (7.59%) Apache
3 3 (3.80%) Elasticsearch
3 3 (3.80%) OpenStack
3 3 (3.80%) Tomcat
4 2 (2.53%) Jetty
5 1 (1.27%) Apache Pig
5 1 (1.27%) Apache Spark
5 1 (1.27%) NServiceBus
5 1 (1.27%) OpenWhisk
5 1 (1.27%) WebLogic
Cloud Services
1 34 (43.04%) Amazon AWS
2 20 (25.32%) Microsoft Azure
3 18 (22.78%) Google Cloud Platform
4 6 (7.59%) Cloud Computing
5 5 (6.33%) GitHub
6 4 (5.06%) Amazon EC2
6 4 (5.06%) AWS Lambda
6 4 (5.06%) Serverless
7 2 (2.53%) IaaS
7 2 (2.53%) PaaS
8 1 (1.27%) Amazon S3
8 1 (1.27%) Amazon SQS
8 1 (1.27%) AWS CloudFormation
8 1 (1.27%) Azure Active Directory
Communications & Networking
1 12 (15.19%) TCP/IP
2 10 (12.66%) SNMP
3 9 (11.39%) Firewall
3 9 (11.39%) HTTP
4 8 (10.13%) Internet
4 8 (10.13%) Wireless
5 6 (7.59%) DHCP
5 6 (7.59%) DNS
5 6 (7.59%) ICMP
5 6 (7.59%) VPN
6 2 (2.53%) Asterisk PBX
6 2 (2.53%) BGP
6 2 (2.53%) Cisco IOS
6 2 (2.53%) Junos
6 2 (2.53%) LAN
6 2 (2.53%) MPLS
6 2 (2.53%) OSPF
6 2 (2.53%) PBX
6 2 (2.53%) WAN
7 1 (1.27%) Network Security
Database & Business Intelligence
1 11 (13.92%) Apache Cassandra
2 9 (11.39%) NoSQL
3 7 (8.86%) PostgreSQL
4 5 (6.33%) MySQL
5 4 (5.06%) Amazon DynamoDB
5 4 (5.06%) MongoDB
5 4 (5.06%) SQL Server
6 3 (3.80%) Relational Database
7 2 (2.53%) BigQuery
7 2 (2.53%) Oracle Database
8 1 (1.27%) Apache Hive
8 1 (1.27%) Big Data
8 1 (1.27%) Couchbase
8 1 (1.27%) Data Warehouse
8 1 (1.27%) Hadoop
8 1 (1.27%) OLTP
8 1 (1.27%) Redis
Development Applications
1 12 (15.19%) Metasploit
2 4 (5.06%) Visual Studio Team System
3 3 (3.80%) Git (software)
3 3 (3.80%) Jenkins
3 3 (3.80%) NUnit
3 3 (3.80%) Selenium
3 3 (3.80%) Subversion
3 3 (3.80%) Team Foundation Server
3 3 (3.80%) TeamCity
3 3 (3.80%) Visual Studio
4 2 (2.53%) Cucumber
4 2 (2.53%) GitLab
4 2 (2.53%) Gradle
4 2 (2.53%) IntelliJ
4 2 (2.53%) JBehave
4 2 (2.53%) Maven
4 2 (2.53%) WebDriver
General
1 19 (24.05%) Retail
2 9 (11.39%) Finance
3 5 (6.33%) Publishing
4 3 (3.80%) Legal
5 2 (2.53%) Games
Job Titles
1 20 (25.32%) Developer
2 13 (16.46%) Software Engineer
3 12 (15.19%) Security Engineer
3 12 (15.19%) Vulnerability Management Engineer
4 9 (11.39%) C# Developer
5 7 (8.86%) .NET Developer
5 7 (8.86%) Analyst
6 6 (7.59%) SOC Analyst
7 5 (6.33%) Head of Development
7 5 (6.33%) Head of Software Development
8 4 (5.06%) Architect
8 4 (5.06%) Database Engineer
8 4 (5.06%) Infrastructure Engineer
8 4 (5.06%) Java Engineer
8 4 (5.06%) Java Software Engineer
9 3 (3.80%) C# .NET Developer
9 3 (3.80%) Cloud Engineer
9 3 (3.80%) Java Developer
9 3 (3.80%) Junior
9 3 (3.80%) Mobile Software Engineer
Libraries, Frameworks & Software Standards
1 18 (22.78%) .NET
2 13 (16.46%) Web Services
3 8 (10.13%) ASP.NET
3 8 (10.13%) Elastic Stack
3 8 (10.13%) HTML
4 7 (8.86%) CSS
4 7 (8.86%) React
5 5 (6.33%) Akka
5 5 (6.33%) AngularJS
5 5 (6.33%) Kafka
5 5 (6.33%) REST
6 4 (5.06%) JSON
6 4 (5.06%) Node.js
6 4 (5.06%) POSIX
6 4 (5.06%) XML
7 3 (3.80%) ASP.NET MVC
7 3 (3.80%) ASP.NET Web Forms
7 3 (3.80%) jQuery
7 3 (3.80%) WCF
8 2 (2.53%) RabbitMQ
Miscellaneous
1 18 (22.78%) Security Operations Centre
2 13 (16.46%) Public Cloud
3 12 (15.19%) Computer Science
4 11 (13.92%) Data Centre
5 9 (11.39%) Mainframe
6 7 (8.86%) Enterprise Software
7 6 (7.59%) Cyber Kill Chain
7 6 (7.59%) Linux Command Line
8 5 (6.33%) Management Information System
9 4 (5.06%) Cloud Native
9 4 (5.06%) User Experience
10 3 (3.80%) Algorithms
10 3 (3.80%) Analytical Skills
10 3 (3.80%) Greenfield Project
10 3 (3.80%) Self-Motivation
11 2 (2.53%) Hybrid Cloud
11 2 (2.53%) N-Tier
11 2 (2.53%) Robotics
12 1 (1.27%) Analytical Mindset
12 1 (1.27%) Fintech
Operating Systems
1 34 (43.04%) Linux
2 18 (22.78%) Kali Linux
3 17 (21.52%) Unix
4 6 (7.59%) Android
4 6 (7.59%) Apple iOS
4 6 (7.59%) Mac OS X
5 5 (6.33%) Windows
6 2 (2.53%) AIX
6 2 (2.53%) Windows Server
7 1 (1.27%) Solaris
Processes & Methodologies
1 61 (77.22%) Agile Software Development
2 30 (37.97%) Problem-Solving
3 27 (34.18%) DevOps
3 27 (34.18%) Software Engineering
4 24 (30.38%) Continuous Improvement
5 18 (22.78%) Security Architecture
5 18 (22.78%) Security Operations
5 18 (22.78%) SIEM
5 18 (22.78%) Vulnerability Management
6 17 (21.52%) Application Performance Monitoring
6 17 (21.52%) Identity Access Management
6 17 (21.52%) Performance Monitoring
6 17 (21.52%) Test Automation
7 15 (18.99%) Scrum
8 13 (16.46%) Continuous Delivery
9 12 (15.19%) Penetration Testing
9 12 (15.19%) Secure Coding
9 12 (15.19%) Threat Modelling
10 11 (13.92%) Microservices
11 10 (12.66%) E-Commerce
Programming Languages
1 43 (54.43%) Python
2 26 (32.91%) Java
3 21 (26.58%) Ruby
4 19 (24.05%) C#
5 17 (21.52%) Go
6 13 (16.46%) Perl
6 13 (16.46%) PHP
7 11 (13.92%) Bash Shell
8 8 (10.13%) SQL
9 7 (8.86%) JavaScript
9 7 (8.86%) PowerShell
10 6 (7.59%) TypeScript
11 4 (5.06%) Java 8
12 3 (3.80%) VB.NET
13 2 (2.53%) C
13 2 (2.53%) Scala
13 2 (2.53%) Shell Script
14 1 (1.27%) PL/SQL
14 1 (1.27%) R
Qualifications
1 18 (22.78%) CEH
1 18 (22.78%) CompTIA Security+
1 18 (22.78%) SSCP
2 13 (16.46%) Degree
3 12 (15.19%) CISA
3 12 (15.19%) CISM
3 12 (15.19%) CISSP
3 12 (15.19%) CSSLP
3 12 (15.19%) GIAC
3 12 (15.19%) SANS
4 8 (10.13%) Cisco Certification
5 6 (7.59%) A+ Certification
5 6 (7.59%) CCENT
5 6 (7.59%) CCNA
5 6 (7.59%) GCIA
5 6 (7.59%) GCIH
5 6 (7.59%) GSEC
5 6 (7.59%) Network+ Certification
5 6 (7.59%) OSCP
6 4 (5.06%) Computer Science Degree
Quality Assurance & Compliance
1 3 (3.80%) QA
System Software
1 7 (8.86%) Active Directory
1 7 (8.86%) Docker
2 3 (3.80%) VMware Infrastructure
3 2 (2.53%) Ceph
4 1 (1.27%) Microsoft App-V
Systems Management
1 17 (21.52%) Kubernetes
2 14 (17.72%) Grafana
3 12 (15.19%) Nessus
3 12 (15.19%) Nmap
4 11 (13.92%) Prometheus
5 6 (7.59%) QRadar
6 3 (3.80%) Opscode Chef
6 3 (3.80%) Puppet
7 2 (2.53%) Ansible
7 2 (2.53%) Icinga
7 2 (2.53%) Kibana
7 2 (2.53%) logstash
7 2 (2.53%) Nagios
7 2 (2.53%) ZABBIX
8 1 (1.27%) OpenView
8 1 (1.27%) Salt
8 1 (1.27%) Terraform
8 1 (1.27%) Tivoli
Vendors
1 12 (15.19%) Netsparker
1 12 (15.19%) Qualys
2 10 (12.66%) Google
3 8 (10.13%) Microsoft
4 6 (7.59%) New Relic
4 6 (7.59%) PagerDuty
4 6 (7.59%) Splunk
5 5 (6.33%) Oracle
6 4 (5.06%) Aruba
6 4 (5.06%) Cisco
6 4 (5.06%) Juniper
7 3 (3.80%) VMware
8 2 (2.53%) Citrix
8 2 (2.53%) F5
8 2 (2.53%) Foundry
8 2 (2.53%) NetApp
9 1 (1.27%) BMC
9 1 (1.27%) IBM
9 1 (1.27%) Sun