The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for Open Source skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Open Source over the 3 months to 30 April 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.

Open Source
East of England / Hertfordshire
3 months to
30 Apr 2017
Same period 2016 Same period 2015
Rank 37 55 59
Rank change year-on-year +18 +4  
Contract jobs citing Open Source 18 6 13
As % of all contract IT jobs advertised in Hertfordshire 3.11% 0.80% 1.81%
As % of the Processes & Methodologies category 3.85% 1.03% 2.35%
Number of daily rates quoted 10 1 8
Median daily rate £544 £563 £394
Median daily rate % change year-on-year -3.33% +42.85%  
90% offered a daily rate of more than £493 £563 £306
10% offered a daily rate of more than £553 £563 £475
UK excluding London median daily rate £475 £450 £400
% change year-on-year +5.55% +12.50%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £42.50 £30.00 £45.00
% change year-on-year +41.66% -33.33%  

Open Source is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Hertfordshire
Contract job vacancies with a requirement for process and methodology skills 467 582 553
As % of all contract IT job vacancies advertised in Hertfordshire 80.66% 77.50% 77.02%
Number of daily rates quoted 234 308 280
Median daily rate £475 £425 £400
Median daily rate % change year-on-year +11.76% +6.25%  
90% offered a daily rate of more than £250 £300 £275
10% offered a daily rate of more than £600 £550 £525
UK excluding London median daily rate £415 £400 £390
% change year-on-year +3.75% +2.56%  
Number of hourly rates quoted 28 22 37
Median hourly rate £45.00 £38.00 £25.00
Median hourly rate % change year-on-year +18.42% +52.00%  
90% offered a hourly rate of more than £17.05 £8.50 £12.10
10% offered a hourly rate of more than £51.10 £50.00 £38.10
UK excluding London median hourly rate £36.00 £36.00 £30.50
% change year-on-year - +18.03%  

Open Source
Job Vacancy Trend in Hertfordshire

The job posting trend of jobs advertised in Hertfordshire citing Open Source as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for Open Source in Hertfordshire

Open Source
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for Open Source in Hertfordshire

Open Source
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing Open Source in Hertfordshire over the 3 months to 30 April 2017.

Contractor daily rate histogram for Open Source in Hertfordshire

Open Source
Contractor Hourly Rate Trend in Hertfordshire

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

Contractor hourly rate trend for Open Source in Hertfordshire

Open Source
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 Open Source within the Hertfordshire region over the 3 months to 30 April 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford - 9 £500 - 1
Hatfield -4 6 £550 - 2
Rickmansworth - 1 - -
Stevenage - 1 £425 -
Open Source
East of England

For the 6 months to 30 April 2017, IT contractor jobs citing Open Source 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 Open Source.

1 24 (85.71%) Java
2 21 (75.00%) Agile Software Development
3 15 (53.57%) TDD
3 15 (53.57%) DevOps
4 13 (46.43%) Spring
5 12 (42.86%) Continuous Delivery
6 11 (39.29%) OO
6 11 (39.29%) RESTful
7 9 (32.14%) Continuous Integration
7 9 (32.14%) JSON
7 9 (32.14%) BDD
7 9 (32.14%) XML
7 9 (32.14%) Scrum
8 8 (28.57%) Software Testing
8 8 (28.57%) Unix
8 8 (28.57%) Linux
8 8 (28.57%) IBM
8 8 (28.57%) Test Automation
8 8 (28.57%) Cucumber
8 8 (28.57%) Gherkin
8 8 (28.57%) ATDD
8 8 (28.57%) Automation Testing
8 8 (28.57%) Selenium
8 8 (28.57%) IBM Integration Bus
8 8 (28.57%) JBehave
8 8 (28.57%) WebDriver
9 7 (25.00%) Kanban
9 7 (25.00%) Atlassian
9 7 (25.00%) Test Strategy
10 6 (21.43%) High Availability

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 6 (21.43%) WebSphere
2 5 (17.86%) Confluence
2 5 (17.86%) Tomcat
3 2 (7.14%) BizTalk Server
4 1 (3.57%) Apache
4 1 (3.57%) OpenStack
Applications
1 3 (10.71%) MS Visio
2 2 (7.14%) Microsoft Excel
2 2 (7.14%) Microsoft PowerPoint
3 1 (3.57%) Microsoft Office
Business Applications
1 4 (14.29%) Dynamics CRM
1 4 (14.29%) SAP HCM
Cloud Services
1 4 (14.29%) Amazon AWS
1 4 (14.29%) Boomi
1 4 (14.29%) SuccessFactors
2 2 (7.14%) G Suite
3 1 (3.57%) GitHub
Database & Business Intelligence
1 6 (21.43%) NoSQL
2 5 (17.86%) Apache Cassandra
2 5 (17.86%) Big Data
3 1 (3.57%) Data Mining
Development Applications
1 8 (28.57%) Cucumber
1 8 (28.57%) JBehave
1 8 (28.57%) Selenium
1 8 (28.57%) WebDriver
2 5 (17.86%) Git (software)
2 5 (17.86%) JIRA
2 5 (17.86%) JUnit
2 5 (17.86%) Maven
2 5 (17.86%) SoapUI
3 4 (14.29%) Jenkins
4 3 (10.71%) Atlassian Bamboo
4 3 (10.71%) Mockito
4 3 (10.71%) Moq
4 3 (10.71%) TeamCity
5 1 (3.57%) FitNesse
5 1 (3.57%) Robot Framework
General
1 2 (7.14%) Finance
Job Titles
1 12 (42.86%) Developer
2 6 (21.43%) Java Developer
3 5 (17.86%) Analyst
3 5 (17.86%) Architect
3 5 (17.86%) Integration Developer
3 5 (17.86%) WebSphere Developer
4 4 (14.29%) Automation Tester
4 4 (14.29%) AWS DevOps
4 4 (14.29%) Senior Developer
4 4 (14.29%) Senior Java Developer
4 4 (14.29%) Tester
5 3 (10.71%) AWS Architect
5 3 (10.71%) AWS Developer
5 3 (10.71%) DevOps Developer
5 3 (10.71%) Java Architect
5 3 (10.71%) Senior DevOps
6 2 (7.14%) DevOps Architect
6 2 (7.14%) Java Automation Tester
6 2 (7.14%) Selenium Automation Tester
6 2 (7.14%) Selenium Tester
Libraries, Frameworks & Software Standards
1 13 (46.43%) Spring
2 11 (39.29%) RESTful
3 9 (32.14%) JSON
3 9 (32.14%) XML
4 8 (28.57%) Gherkin
4 8 (28.57%) IBM Integration Bus
5 6 (21.43%) .NET
5 6 (21.43%) WebSphere MQ
5 6 (21.43%) XSLT
6 5 (17.86%) Hibernate
7 3 (10.71%) REST
7 3 (10.71%) Spring Boot
8 2 (7.14%) Middleware
9 1 (3.57%) Oracle Fusion
Miscellaneous
1 6 (21.43%) DataPower
2 5 (17.86%) Client/Server
3 4 (14.29%) Mobile App
4 3 (10.71%) iPad
5 1 (3.57%) Computer Science
5 1 (3.57%) Linux Command Line
5 1 (3.57%) Smart Meter
5 1 (3.57%) User Experience
5 1 (3.57%) Wiki
Operating Systems
1 8 (28.57%) Linux
1 8 (28.57%) Unix
Processes & Methodologies
1 21 (75.00%) Agile Software Development
2 15 (53.57%) DevOps
2 15 (53.57%) TDD
3 12 (42.86%) Continuous Delivery
4 11 (39.29%) OO
5 9 (32.14%) BDD
5 9 (32.14%) Continuous Integration
5 9 (32.14%) Scrum
6 8 (28.57%) ATDD
6 8 (28.57%) Automation Testing
6 8 (28.57%) Software Testing
6 8 (28.57%) Test Automation
7 7 (25.00%) Kanban
7 7 (25.00%) Test Strategy
8 6 (21.43%) API Development
8 6 (21.43%) Configuration Management
8 6 (21.43%) High Availability
8 6 (21.43%) Mentoring
8 6 (21.43%) Non-Functional Testing
8 6 (21.43%) Release Management
Programming Languages
1 24 (85.71%) Java
2 6 (21.43%) JavaScript
3 2 (7.14%) Shell Script
4 1 (3.57%) C
4 1 (3.57%) C++
4 1 (3.57%) Perl
4 1 (3.57%) Python
4 1 (3.57%) Ruby
Qualifications
1 2 (7.14%) Degree
Quality Assurance & Compliance
1 3 (10.71%) QA
2 2 (7.14%) SDET
System Software
1 1 (3.57%) Docker
Systems Management
1 6 (21.43%) Opscode Chef
1 6 (21.43%) WebSphere Cast Iron
2 5 (17.86%) Puppet
3 1 (3.57%) Ansible
3 1 (3.57%) Packer
3 1 (3.57%) Terraform
Vendors
1 8 (28.57%) IBM
2 7 (25.00%) Atlassian
3 4 (14.29%) Dell
3 4 (14.29%) SAP
4 2 (7.14%) Google
4 2 (7.14%) MuleSoft
4 2 (7.14%) TIBCO
4 2 (7.14%) WSO2
5 1 (3.57%) Oracle