The following table provides summary statistics for permanent job vacancies advertised in the City of London 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 3 months to 29 June 2017 with a comparison to the same period in the previous 2 years.

Open Source
London / City of London
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 106 95 102
Rank change year-on-year -11 +7  
Permanent jobs citing Open Source 135 209 274
As % of all permanent IT jobs advertised in the City of London 2.63% 3.29% 2.65%
As % of the Processes & Methodologies category 2.96% 3.63% 2.97%
Number of salaries quoted 113 192 238
Median salary £62,500 £60,000 £60,000
Median salary % change year-on-year +4.16% -  
90% offered a salary of more than £37,500 £38,053 £37,500
10% offered a salary of more than £102,500 £87,500 £85,750
UK excluding London median salary £47,500 £47,500 £45,000
% change year-on-year - +5.55%  

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 permanent job vacancies advertised in the City of London with a requirement for process and methodology skills.

Process & Methodology Skills
City of London
Permanent job vacancies with a requirement for process and methodology skills 4568 5755 9220
As % of all permanent IT job vacancies advertised in the City of London 89.10% 90.63% 89.20%
Number of salaries quoted 17053 23088 30281
Median salary £62,500 £60,000 £57,500
Median salary % change year-on-year +4.16% +4.34%  
90% offered a salary of more than £37,500 £37,500 £36,250
10% offered a salary of more than £90,000 £87,500 £87,500
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

Open Source
Job Vacancy Trend in the City of London

Job postings citing Open Source as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Open Source in the City of London

Open Source
Salary Trend in the City of London

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

Salary trend for Open Source in the City of London

Open Source
Salary Histogram in the City of London

The salary distribution of IT jobs citing Open Source in the City of London over the 3 months to 29 June 2017.

Salary histogram for Open Source in the City of London

For the 6 months to 29 June 2017, IT 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 job ads across the City of London region with a requirement for Open Source.

1 118 (38.69%) Agile Software Development
2 105 (34.43%) Java
3 103 (33.77%) Python
4 100 (32.79%) Finance
5 99 (32.46%) Linux
6 97 (31.80%) JavaScript
7 73 (23.93%) C#
8 70 (22.95%) DevOps
9 69 (22.62%) Continuous Integration
10 66 (21.64%) SQL
11 61 (20.00%) Scrum
12 54 (17.70%) .NET
13 52 (17.05%) Amazon AWS
13 52 (17.05%) NoSQL
14 46 (15.08%) Jenkins
15 44 (14.43%) C++
15 44 (14.43%) HTML
15 44 (14.43%) TDD
16 40 (13.11%) Banking
16 40 (13.11%) REST
16 40 (13.11%) Git (software)
17 38 (12.46%) Test Automation
17 38 (12.46%) Ruby
17 38 (12.46%) CSS
17 38 (12.46%) SOA
17 38 (12.46%) Microservices
18 37 (12.13%) SQL Server
18 37 (12.13%) Computer Science
19 36 (11.80%) Unix
20 35 (11.48%) Apache Spark

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 35 (11.48%) Apache Spark
2 28 (9.18%) Apache
3 12 (3.93%) Tomcat
4 10 (3.28%) CMS
5 8 (2.62%) OpenStack
6 7 (2.30%) WebSphere
7 6 (1.97%) Apache Solr
7 6 (1.97%) JBoss
8 5 (1.64%) Alfresco
8 5 (1.64%) Elasticsearch
8 5 (1.64%) Mule
8 5 (1.64%) WebLogic
8 5 (1.64%) WebSphere Application Server
9 3 (0.98%) Confluence
9 3 (0.98%) Drupal
9 3 (0.98%) nginx
10 2 (0.66%) IIS
11 1 (0.33%) Apache Pig
11 1 (0.33%) Moodle
Applications
1 1 (0.33%) Gephi
1 1 (0.33%) InVision
Business Applications
1 2 (0.66%) Oracle Payables
2 1 (0.33%) ION MarketView
Cloud Services
1 52 (17.05%) Amazon AWS
2 20 (6.56%) SaaS
3 18 (5.90%) GitHub
4 17 (5.57%) Microsoft Azure
5 12 (3.93%) Amazon EC2
5 12 (3.93%) Amazon S3
6 10 (3.28%) Amazon ELB
7 8 (2.62%) Cloud Computing
7 8 (2.62%) Google Play
7 8 (2.62%) iTunes
7 8 (2.62%) PaaS
8 6 (1.97%) IaaS
9 3 (0.98%) Amazon Kinesis
10 2 (0.66%) Google Cloud Platform
10 2 (0.66%) Office 365
10 2 (0.66%) OpenShift
11 1 (0.33%) Amazon EMR
11 1 (0.33%) AWS Elastic Beanstalk
11 1 (0.33%) DigitalOcean
11 1 (0.33%) Google Compute Engine
Communications & Networking
1 19 (6.23%) HTTP
2 16 (5.25%) Internet
3 14 (4.59%) DNS
4 11 (3.61%) AMQP
5 9 (2.95%) Firewall
6 6 (1.97%) VoIP
6 6 (1.97%) Wireshark
7 4 (1.31%) Network Security
7 4 (1.31%) TCP/IP
7 4 (1.31%) VPN
8 3 (0.98%) BGP
8 3 (0.98%) LAN
8 3 (0.98%) LDAP
8 3 (0.98%) MPLS
8 3 (0.98%) OSPF
8 3 (0.98%) WAN
8 3 (0.98%) Wireless
8 3 (0.98%) Wireless Security
9 2 (0.66%) DHCP
9 2 (0.66%) SAN
Database & Business Intelligence
1 52 (17.05%) NoSQL
2 37 (12.13%) SQL Server
3 34 (11.15%) Big Data
4 33 (10.82%) MySQL
5 32 (10.49%) Hadoop
6 18 (5.90%) Relational Database
7 16 (5.25%) PostgreSQL
8 14 (4.59%) MongoDB
9 13 (4.26%) Apache Hive
10 11 (3.61%) Apache Cassandra
10 11 (3.61%) SQL Server Integration Services
11 9 (2.95%) InfluxDB
12 8 (2.62%) RDBMS
13 7 (2.30%) SQLite
14 4 (1.31%) Couchbase
14 4 (1.31%) Data Lake
14 4 (1.31%) Data Warehouse
14 4 (1.31%) Redis
15 3 (0.98%) Amazon Redshift
15 3 (0.98%) Sqoop
Development Applications
1 46 (15.08%) Jenkins
2 40 (13.11%) Git (software)
3 23 (7.54%) Maven
4 19 (6.23%) Subversion
5 15 (4.92%) Selenium
6 12 (3.93%) TeamCity
7 11 (3.61%) JUnit
8 10 (3.28%) NUnit
8 10 (3.28%) Visual Studio
9 9 (2.95%) Mercurial
9 9 (2.95%) SpecFlow
10 8 (2.62%) Android Studio
10 8 (2.62%) Xcode
11 6 (1.97%) Mockito
12 5 (1.64%) Artifactory
13 4 (1.31%) Atlassian Bamboo
13 4 (1.31%) Burp Suite
13 4 (1.31%) FitNesse
13 4 (1.31%) JIRA
14 3 (0.98%) TestNG
General
1 100 (32.79%) Finance
2 40 (13.11%) Banking
3 15 (4.92%) Retail
4 13 (4.26%) Legal
5 12 (3.93%) Telecoms
6 9 (2.95%) Front Office
6 9 (2.95%) Marketing
7 6 (1.97%) Financial Institution
7 6 (1.97%) Investment Banking
8 3 (0.98%) Back Office
9 1 (0.33%) Games
9 1 (0.33%) Law
9 1 (0.33%) Wholesale Banking
Job Titles
1 114 (37.38%) Developer
2 28 (9.18%) Architect
2 28 (9.18%) DevOps Engineer
3 27 (8.85%) Java Developer
4 21 (6.89%) Senior Developer
5 20 (6.56%) Android Developer
5 20 (6.56%) C# Developer
6 18 (5.90%) Lead Developer
6 18 (5.90%) Software Engineer
7 17 (5.57%) .NET Developer
7 17 (5.57%) JavaScript Developer
8 16 (5.25%) Junior
9 15 (4.92%) Technical Architect
10 14 (4.59%) Senior Software Engineer
11 12 (3.93%) C# .NET Developer
11 12 (3.93%) C++ Software Engineer
11 12 (3.93%) Data Scientist
11 12 (3.93%) Senior C++ Software Engineer
11 12 (3.93%) Software Developer
12 10 (3.28%) Linux Engineer
Libraries, Frameworks & Software Standards
1 54 (17.70%) .NET
2 44 (14.43%) HTML
3 40 (13.11%) REST
4 38 (12.46%) CSS
5 29 (9.51%) Web Services
6 26 (8.52%) Node.js
6 26 (8.52%) XML
7 23 (7.54%) JMS
8 22 (7.21%) AngularJS
8 22 (7.21%) JSON
9 19 (6.23%) SOAP
10 18 (5.90%) ASP.NET
11 16 (5.25%) Kafka
12 13 (4.26%) iOS SDK
12 13 (4.26%) jQuery
12 13 (4.26%) RxJava
13 12 (3.93%) ASP.NET MVC
13 12 (3.93%) Spring
14 11 (3.61%) LAMP
14 11 (3.61%) Middleware
Miscellaneous
1 37 (12.13%) Computer Science
2 34 (11.15%) Algorithms
2 34 (11.15%) User Experience
3 21 (6.89%) Fintech
4 18 (5.90%) Analytical Skills
5 13 (4.26%) Public Cloud
6 11 (3.61%) Data Structures
7 10 (3.28%) Blog
8 9 (2.95%) Mobile App
9 8 (2.62%) CUDA
9 8 (2.62%) Hedge funds
9 8 (2.62%) Photography
10 7 (2.30%) Equities
10 7 (2.30%) Greenfield Project
11 6 (1.97%) Enterprise Software
11 6 (1.97%) Foreign Exchange (FX)
11 6 (1.97%) Social Media
12 5 (1.64%) Derivative
12 5 (1.64%) Xbox
13 4 (1.31%) Data Centre
Operating Systems
1 99 (32.46%) Linux
2 36 (11.80%) Unix
3 34 (11.15%) Android
4 30 (9.84%) Windows
5 17 (5.57%) Apple iOS
6 12 (3.93%) Red Hat Enterprise Linux
7 8 (2.62%) VMS
8 7 (2.30%) Mac OS X
9 6 (1.97%) CentOS
10 4 (1.31%) Ubuntu
10 4 (1.31%) Windows Server
11 2 (0.66%) AIX
11 2 (0.66%) Solaris
12 1 (0.33%) Debian
12 1 (0.33%) Kali Linux
12 1 (0.33%) Windows 7
Processes & Methodologies
1 118 (38.69%) Agile Software Development
2 70 (22.95%) DevOps
3 69 (22.62%) Continuous Integration
4 61 (20.00%) Scrum
5 44 (14.43%) TDD
6 38 (12.46%) Microservices
6 38 (12.46%) SOA
6 38 (12.46%) Test Automation
7 30 (9.84%) Android Development
8 28 (9.18%) Software Engineering
9 27 (8.85%) Analytics
10 26 (8.52%) OO
11 23 (7.54%) BDD
11 23 (7.54%) Kanban
12 22 (7.21%) Continuous Delivery
12 22 (7.21%) MVC
13 18 (5.90%) Translating Business Requirements
14 17 (5.57%) E-Commerce
14 17 (5.57%) Machine Learning
15 15 (4.92%) UML
Programming Languages
1 105 (34.43%) Java
2 103 (33.77%) Python
3 97 (31.80%) JavaScript
4 73 (23.93%) C#
5 66 (21.64%) SQL
6 44 (14.43%) C++
7 38 (12.46%) Ruby
8 23 (7.54%) Go
8 23 (7.54%) Perl
9 21 (6.89%) PHP
10 18 (5.90%) Scala
11 16 (5.25%) Bash Shell
12 15 (4.92%) C
13 14 (4.59%) Erlang
14 12 (3.93%) Objective-C
15 9 (2.95%) T-SQL
16 8 (2.62%) Apple Swift
16 8 (2.62%) Kotlin
17 7 (2.30%) R
17 7 (2.30%) TypeScript
Qualifications
1 33 (10.82%) Degree
2 19 (6.23%) Security Cleared
3 12 (3.93%) Computer Science Degree
4 8 (2.62%) Cisco Certification
4 8 (2.62%) PhD
5 7 (2.30%) DV Cleared
5 7 (2.30%) SC Cleared
6 6 (1.97%) Master's Degree
7 4 (1.31%) CCNA
7 4 (1.31%) RHCA
7 4 (1.31%) RHCE
8 3 (0.98%) CCNP
8 3 (0.98%) CISA
8 3 (0.98%) CISM
8 3 (0.98%) CISSP
8 3 (0.98%) GIAC
8 3 (0.98%) ISTQB
8 3 (0.98%) SANS
9 2 (0.66%) ISTQB Advanced Certification
10 1 (0.33%) AWS Certification
Quality Assurance & Compliance
1 8 (2.62%) QA
1 8 (2.62%) Sarbanes-Oxley
2 4 (1.31%) WCAG
3 2 (0.66%) ISO 20022
3 2 (0.66%) SLA
4 1 (0.33%) GCP
4 1 (0.33%) ISO 15022
4 1 (0.33%) ISO/IEC 27001
4 1 (0.33%) PCI DSS
System Software
1 28 (9.18%) Docker
2 15 (4.92%) Virtual Machines
3 3 (0.98%) Apache Flume
4 2 (0.66%) Apache ZooKeeper
4 2 (0.66%) Microsoft Virtual Server
4 2 (0.66%) NFS
4 2 (0.66%) Varnish
4 2 (0.66%) Virtual Servers
4 2 (0.66%) VMware Infrastructure
4 2 (0.66%) vSphere
5 1 (0.33%) Active Directory
5 1 (0.33%) HDFS
5 1 (0.33%) KVM
5 1 (0.33%) pfSense
5 1 (0.33%) Snort
5 1 (0.33%) vCloud
5 1 (0.33%) Virtual Desktop
5 1 (0.33%) Xen
Systems Management
1 33 (10.82%) Puppet
2 21 (6.89%) Opscode Chef
3 17 (5.57%) Ansible
4 10 (3.28%) MOM
4 10 (3.28%) Terraform
5 9 (2.95%) Cacti
5 9 (2.95%) Grafana
5 9 (2.95%) Graphite
5 9 (2.95%) Kubernetes
5 9 (2.95%) Munin
5 9 (2.95%) Nagios
5 9 (2.95%) Salt
6 5 (1.64%) Mesos
7 3 (0.98%) Nessus
8 2 (0.66%) logstash
9 1 (0.33%) AirWatch
9 1 (0.33%) Consul
9 1 (0.33%) Kibana
9 1 (0.33%) Marathon
9 1 (0.33%) Prometheus
Vendors
1 28 (9.18%) Microsoft
2 20 (6.56%) Oracle
3 15 (4.92%) Google
4 10 (3.28%) Red Hat
5 8 (2.62%) Apigee
5 8 (2.62%) New Relic
6 7 (2.30%) TIBCO
7 6 (1.97%) Cisco
8 4 (1.31%) Huawei
8 4 (1.31%) Juniper
8 4 (1.31%) Sybase
8 4 (1.31%) VMware
9 3 (0.98%) Cloudera
9 3 (0.98%) Facebook
9 3 (0.98%) SaltStack
9 3 (0.98%) Twitter
10 2 (0.66%) Brocade
10 2 (0.66%) MuleSoft
10 2 (0.66%) Tableau
10 2 (0.66%) Zend
City, London
Linux Recruit
Salary: £35000 - £40000 per annum
Posted: Yesterday
City, London
Finsbury Digital
Posted: 2 days ago
City, London
Senitor Associates
Salary: Excellent Benefits
Posted: 2 days ago
City, London
Venturi
Salary: £40000 - £45000 per annum + benefits
Posted: 2 days ago
City, London
ANSON MCCADE
Salary: £42,000 - £60,000 and strong benefits
Posted: 2 days ago
City, London
TEKsystems
Salary: £60000 - £80000 per annum + benefits
Posted: Yesterday
City, London
TEKsystems
Salary: £50000 - £90000 per annum + Annual Benefits
Posted: 3 days ago
City, London
Quant Capital
Salary: Up to £65,000 per annum Bonus Medical Pension
Posted: Yesterday
City, London
ANSON MCCADE
Salary: UKP 100000 per year
Posted: 2 days ago
City, London
Total Recruitment Specialists Limited / TRG / Total recruitment group
Salary: £50000 - £65000 Per Annum
Posted: 3 days ago
City, London
Vadis People
Salary: circ £50,000 to £65,000
Posted: 5 days ago
City, London
ANSON MCCADE
Salary: UKP 80000 per year
Posted: 2 days ago
City, London
Harrington Starr
Salary: £70000 - £90000 per annum
Posted: 3 days ago
City, London
Sogeti
Salary: Competitive salary + benefits
Posted: 5 days ago
City, London
TEKsystems
Salary: £50000 - £90000 per annum + benefits
Posted: 4 days ago
City, London
Big Wednesday Digital Ltd
Salary: £45000 - £85000 per annum + Negotiable
Posted: 5 days ago
City, London
ANSON MCCADE
Salary: £60,000 - £78,000 and expansive benefits
Posted: 6 days ago
City, London
Client Server
Salary: £95k to £120k + bonus + benefits
Posted: 6 days ago
City, London
ANSON MCCADE
Salary: £85,000 - £105,000 (+ top tier package including award winning pension
Posted: 6 days ago
City, London
Franklin Fitch Limited
Salary: Up to £50,000 per annum
Posted: 6 days ago
City, London
Quant Capital
Salary: Up to £85,000 per annum + benefits and bonus
Posted: 2 days ago
City, London
Deerfoot IT Resources Ltd
Salary: £70000 - £120000 per annum
Posted: 6 days ago
City, London
Burns Sheehan
Salary: £50000 - £60000 per annum + Bonus
Posted: 5 days ago
City, London
Hotels.com
Salary: Competitive
Posted: 20 days ago
City, London
Hotels.com
Salary: Competitive
Posted: 20 days ago
City, London
Hotels.com
Salary: Competitive
Posted: 20 days ago
City, London
Parallel Consulting
Salary: £60000 - £65000 per annum + excellent benefits
Posted: 4 days ago
City, London
Charles Taylor plc
Salary: Market related
Posted: 13 days ago
City, London
Yoti ltd
Posted: 14 days ago
City, London
Yoti ltd
Posted: 14 days ago