The following table provides summary statistics for contract job vacancies advertised in the City of London 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 24 June 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
London / City of London
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 65 62 100
Rank change year-on-year -3 +38  
Contract jobs citing Open Source 111 115 116
As % of all contract IT jobs advertised in the City of London 3.40% 3.40% 1.99%
As % of the Processes & Methodologies category 3.86% 3.96% 2.46%
Number of daily rates quoted 93 92 97
Median daily rate £513 £475 £500
Median daily rate % change year-on-year +7.89% -5.00%  
90% offered a daily rate of more than £405 £400 £373
10% offered a daily rate of more than £600 £598 £625
UK excluding London median daily rate £475 £450 £400
% change year-on-year +5.55% +12.50%  
Number of hourly rates quoted 0 0 2
Median hourly rate - - £45.00
UK excluding London median hourly rate £47.50 £31.22 £40.00
% change year-on-year +52.13% -21.94%  

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 the City of London with a requirement for process and methodology skills.

Contract Process & Methodology Skills
City of London
Contract job vacancies with a requirement for process and methodology skills 2879 2907 4718
As % of all contract IT job vacancies advertised in the City of London 88.15% 85.93% 81.07%
Number of daily rates quoted 2210 2380 3714
Median daily rate £500 £475 £473
Median daily rate % change year-on-year +5.26% +0.52%  
90% offered a daily rate of more than £350 £335 £325
10% offered a daily rate of more than £650 £625 £625
UK excluding London median daily rate £415 £400 £380
% change year-on-year +3.75% +5.26%  
Number of hourly rates quoted 23 24 55
Median hourly rate £20.00 £19.00 £24.50
Median hourly rate % change year-on-year +5.26% -22.44%  
90% offered a hourly rate of more than £14.75 £12.50 £15.00
10% offered a hourly rate of more than £41.00 £31.50 £56.20
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

Open Source
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London 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 the City of London

Open Source
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Open Source in the City of London

Open Source
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Open Source in the City of London over the 3 months to 24 June 2017.

Contractor daily rate histogram for Open Source in the City of London

Open Source
Contractor Hourly Rate Trend in the City of London

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

Contractor hourly rate trend for Open Source in the City of London

For the 6 months to 24 June 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 City of London region with a requirement for Open Source.

1 86 (43.43%) Agile Software Development
2 78 (39.39%) DevOps
3 66 (33.33%) Java
3 66 (33.33%) Linux
4 53 (26.77%) TDD
5 46 (23.23%) Jenkins
6 45 (22.73%) Amazon AWS
7 40 (20.20%) JavaScript
8 39 (19.70%) Unix
8 39 (19.70%) Python
9 38 (19.19%) Puppet
10 37 (18.69%) Continuous Integration
10 37 (18.69%) HTML
11 35 (17.68%) Git (software)
12 33 (16.67%) Web Services
13 32 (16.16%) CSS
13 32 (16.16%) Spring
14 31 (15.66%) Finance
14 31 (15.66%) Node.js
14 31 (15.66%) Big Data
15 30 (15.15%) Microservices
15 30 (15.15%) NoSQL
16 27 (13.64%) Docker
17 26 (13.13%) Ansible
18 25 (12.63%) Opscode Chef
18 25 (12.63%) High Availability
19 24 (12.12%) REST
19 24 (12.12%) RESTful
20 23 (11.62%) OO
21 22 (11.11%) Apache Cassandra

Open Source
Co-occurring IT Skills in the City of London 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 (5.56%) Confluence
2 10 (5.05%) Apache
3 9 (4.55%) Apache Spark
3 9 (4.55%) OpenStack
4 8 (4.04%) JBoss
4 8 (4.04%) nginx
5 5 (2.53%) Tomcat
6 4 (2.02%) CMS
6 4 (2.02%) IIS
6 4 (2.02%) WebSphere
7 3 (1.52%) Drupal
7 3 (1.52%) WebLogic
8 2 (1.01%) Apache Solr
8 2 (1.01%) Cloud Foundry
8 2 (1.01%) Hubot
8 2 (1.01%) Mule
8 2 (1.01%) Oracle SOA Suite
8 2 (1.01%) SAS
9 1 (0.51%) Adobe Experience Manager
9 1 (0.51%) CloudStack
Applications
1 1 (0.51%) MS Visio
1 1 (0.51%) Spreadsheet
1 1 (0.51%) SPSS
Business Applications
1 2 (1.01%) ION MarketView
2 1 (0.51%) SAP Oil and Gas
Cloud Services
1 45 (22.73%) Amazon AWS
2 13 (6.57%) Microsoft Azure
3 12 (6.06%) PaaS
4 8 (4.04%) IaaS
5 5 (2.53%) AWS CloudFormation
5 5 (2.53%) Bluemix
5 5 (2.53%) Cloud Computing
5 5 (2.53%) IBM Cloud
6 4 (2.02%) AWS Lambda
6 4 (2.02%) GitHub
6 4 (2.02%) SaaS
6 4 (2.02%) Slack
7 3 (1.52%) Amazon EC2
7 3 (1.52%) Amazon S3
7 3 (1.52%) Office 365
7 3 (1.52%) Salesforce Service Cloud
8 2 (1.01%) Akamai
8 2 (1.01%) Trello
9 1 (0.51%) Datadog
9 1 (0.51%) Google Cloud Platform
Communications & Networking
1 11 (5.56%) Internet
2 6 (3.03%) Firewall
3 5 (2.53%) LDAP
4 4 (2.02%) HTTP
5 2 (1.01%) DNS
5 2 (1.01%) Fibre Channel
5 2 (1.01%) LAN
5 2 (1.01%) Network Security
5 2 (1.01%) TCP/IP
6 1 (0.51%) BGP
6 1 (0.51%) Intranet
6 1 (0.51%) MPLS
6 1 (0.51%) OSPF
6 1 (0.51%) Software-Defined Networking
6 1 (0.51%) SSL
6 1 (0.51%) VLAN
6 1 (0.51%) VPN
Database & Business Intelligence
1 31 (15.66%) Big Data
2 30 (15.15%) NoSQL
3 22 (11.11%) Apache Cassandra
4 15 (7.58%) MongoDB
5 14 (7.07%) PostgreSQL
6 13 (6.57%) MySQL
7 12 (6.06%) Hadoop
8 11 (5.56%) SQL Server
9 8 (4.04%) Apache Hive
9 8 (4.04%) Relational Database
10 6 (3.03%) Data Warehouse
11 5 (2.53%) RDBMS
12 3 (1.52%) BusinessObjects
12 3 (1.52%) Redis
12 3 (1.52%) SQLite
13 2 (1.01%) CouchDB
13 2 (1.01%) Impala
13 2 (1.01%) Oracle ODI
13 2 (1.01%) QlikView
13 2 (1.01%) SQL Server 2008
Development Applications
1 46 (23.23%) Jenkins
2 35 (17.68%) Git (software)
3 18 (9.09%) JIRA
4 14 (7.07%) Maven
5 11 (5.56%) JUnit
6 8 (4.04%) Ant
6 8 (4.04%) Subversion
7 7 (3.54%) Cucumber
7 7 (3.54%) TeamCity
8 6 (3.03%) Eclipse
8 6 (3.03%) gulp
8 6 (3.03%) Mockito
8 6 (3.03%) Selenium
9 5 (2.53%) Gradle
9 5 (2.53%) Jasmine
10 4 (2.02%) Bundler
10 4 (2.02%) Vagrant
11 3 (1.52%) Bitbucket
11 3 (1.52%) Sonatype Nexus
11 3 (1.52%) Travis CI
General
1 31 (15.66%) Finance
2 13 (6.57%) Banking
3 3 (1.52%) Front Office
3 3 (1.52%) Marketing
3 3 (1.52%) Retail
4 2 (1.01%) Advertising
4 2 (1.01%) Back Office
4 2 (1.01%) Financial Institution
4 2 (1.01%) Investment Banking
4 2 (1.01%) Publishing
5 1 (0.51%) Electronics
5 1 (0.51%) Legal
5 1 (0.51%) Manufacturing
5 1 (0.51%) Telecoms
Job Titles
1 84 (42.42%) Developer
2 36 (18.18%) Java Developer
3 31 (15.66%) DevOps Engineer
4 18 (9.09%) AWS DevOps
5 17 (8.59%) Architect
6 14 (7.07%) Senior Developer
7 12 (6.06%) DevOps Developer
8 11 (5.56%) AWS Developer
8 11 (5.56%) Full Stack Developer
8 11 (5.56%) Senior Java Developer
9 9 (4.55%) Analyst
9 9 (4.55%) Android Developer
9 9 (4.55%) Front End Developer (Client-Side Developer)
9 9 (4.55%) JavaScript Developer
9 9 (4.55%) Senior DevOps
10 8 (4.04%) AWS Engineer
10 8 (4.04%) Consultant
10 8 (4.04%) Node.js Developer
11 7 (3.54%) AWS DevOps Engineer
12 6 (3.03%) Linux Engineer
Libraries, Frameworks & Software Standards
1 37 (18.69%) HTML
2 33 (16.67%) Web Services
3 32 (16.16%) CSS
3 32 (16.16%) Spring
4 31 (15.66%) Node.js
5 24 (12.12%) REST
5 24 (12.12%) RESTful
6 22 (11.11%) AngularJS
6 22 (11.11%) React
7 17 (8.59%) HTML5
8 14 (7.07%) XML
9 13 (6.57%) SOAP
10 12 (6.06%) CSS3
11 11 (5.56%) RxJava
12 10 (5.05%) .NET
12 10 (5.05%) JSON
13 9 (4.55%) Redux
14 8 (4.04%) J2EE
15 6 (3.03%) Spring MVC
16 5 (2.53%) Java EE
Miscellaneous
1 19 (9.60%) User Experience
2 16 (8.08%) Client/Server
3 10 (5.05%) Analytical Skills
4 9 (4.55%) RIA
5 8 (4.04%) Mobile App
6 6 (3.03%) Algorithms
6 6 (3.03%) Enterprise Software
6 6 (3.03%) Foreign Exchange (FX)
7 5 (2.53%) Computer Science
7 5 (2.53%) Greenfield Project
8 4 (2.02%) Data Structures
8 4 (2.02%) Derivative
8 4 (2.02%) NHS
9 3 (1.52%) Blog
9 3 (1.52%) Data Centre
9 3 (1.52%) Equity Derivative
9 3 (1.52%) Fixed Income
9 3 (1.52%) N-Tier
10 2 (1.01%) Fintech
10 2 (1.01%) Virtual Team
Operating Systems
1 66 (33.33%) Linux
2 39 (19.70%) Unix
3 17 (8.59%) Android
4 11 (5.56%) Red Hat Enterprise Linux
4 11 (5.56%) Windows
5 4 (2.02%) Apple iOS
6 3 (1.52%) Windows Server
7 2 (1.01%) AIX
7 2 (1.01%) CoreOS
7 2 (1.01%) Solaris
8 1 (0.51%) CentOS
8 1 (0.51%) Debian
8 1 (0.51%) Fedora
8 1 (0.51%) Mac OS X
8 1 (0.51%) Ubuntu
Processes & Methodologies
1 86 (43.43%) Agile Software Development
2 78 (39.39%) DevOps
3 53 (26.77%) TDD
4 37 (18.69%) Continuous Integration
5 30 (15.15%) Microservices
6 25 (12.63%) High Availability
7 23 (11.62%) OO
8 21 (10.61%) Mentoring
8 21 (10.61%) Test Automation
9 20 (10.10%) Scrum
10 19 (9.60%) Service Design
11 18 (9.09%) E-Commerce
12 17 (8.59%) Android Development
12 17 (8.59%) Continuous Delivery
12 17 (8.59%) Low Latency
13 16 (8.08%) Configuration Management
13 16 (8.08%) Unit Testing
14 14 (7.07%) Web Development
15 13 (6.57%) SOA
15 13 (6.57%) Software Engineering
Programming Languages
1 66 (33.33%) Java
2 40 (20.20%) JavaScript
3 39 (19.70%) Python
4 18 (9.09%) SQL
5 12 (6.06%) Ruby
6 11 (5.56%) Bash Shell
7 6 (3.03%) Perl
7 6 (3.03%) PowerShell
7 6 (3.03%) Scala
7 6 (3.03%) Shell Script
8 5 (2.53%) C#
8 5 (2.53%) C++
9 4 (2.02%) ES6
9 4 (2.02%) Go
9 4 (2.02%) Groovy
9 4 (2.02%) PHP
10 3 (1.52%) Apex Code
10 3 (1.52%) Objective-C
10 3 (1.52%) SOQL
10 3 (1.52%) SOSL
Qualifications
1 9 (4.55%) Degree
1 9 (4.55%) Security Cleared
2 6 (3.03%) ITIL Certification
3 5 (2.53%) RHCA
3 5 (2.53%) RHCE
3 5 (2.53%) SC Cleared
4 3 (1.52%) AWS Certification
5 2 (1.01%) Computer Science Degree
5 2 (1.01%) OCPJP
6 1 (0.51%) BPSS Clearance
6 1 (0.51%) CEH
6 1 (0.51%) CHECK Team Member
6 1 (0.51%) CISMP
6 1 (0.51%) CISSP
6 1 (0.51%) GIAC
6 1 (0.51%) Master's Degree
Quality Assurance & Compliance
1 7 (3.54%) QA
2 2 (1.01%) SLA
3 1 (0.51%) Data Quality
3 1 (0.51%) Disclosure Scotland
3 1 (0.51%) ISO/IEC 27001
3 1 (0.51%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
3 1 (0.51%) PCI DSS
System Software
1 27 (13.64%) Docker
2 5 (2.53%) Active Directory
3 3 (1.52%) VMware Infrastructure
4 1 (0.51%) HDFS
4 1 (0.51%) Hyper-V
4 1 (0.51%) KVM
4 1 (0.51%) Varnish
4 1 (0.51%) Virtual Machines
4 1 (0.51%) VirtualBox
4 1 (0.51%) vSphere
4 1 (0.51%) Xen
4 1 (0.51%) XenServer
Systems Management
1 38 (19.19%) Puppet
2 26 (13.13%) Ansible
3 25 (12.63%) Opscode Chef
4 17 (8.59%) Terraform
5 12 (6.06%) Kubernetes
6 4 (2.02%) Consul
6 4 (2.02%) Oozie
7 3 (1.52%) Mesos
7 3 (1.52%) MOM
8 2 (1.01%) Dollar Universe
8 2 (1.01%) Oracle Identity Manager
8 2 (1.01%) Rundeck
8 2 (1.01%) Tivoli Identity Manager
9 1 (0.51%) Grafana
9 1 (0.51%) HAProxy
9 1 (0.51%) Kibana
9 1 (0.51%) logstash
9 1 (0.51%) Marathon
9 1 (0.51%) Nagios
9 1 (0.51%) Packer
Vendors
1 12 (6.06%) Oracle
1 12 (6.06%) Red Hat
2 11 (5.56%) IBM
3 6 (3.03%) Microsoft
3 6 (3.03%) Splunk
3 6 (3.03%) VMware
4 5 (2.53%) Tableau
5 4 (2.02%) TIBCO
6 3 (1.52%) Informatica
6 3 (1.52%) Salesforce.com
6 3 (1.52%) ServiceNow
7 2 (1.01%) Atlassian
7 2 (1.01%) Citrix
7 2 (1.01%) Google
7 2 (1.01%) ION Trading
7 2 (1.01%) Perforce
8 1 (0.51%) Adobe
8 1 (0.51%) Cognizant
8 1 (0.51%) hybris
8 1 (0.51%) SAP
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