Period
to 20 November 2017

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 6 months to 20 November 2017 with a comparison to the same period in the previous 2 years.

Open Source
Central London > City of London
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 121 116 108
Rank change year-on-year -5 -8 +7
Permanent jobs citing Open Source 260 297 457
As % of all permanent IT jobs advertised in the City of London 2.55% 2.58% 2.67%
As % of the Processes & Methodologies category 2.83% 2.88% 2.99%
Number of salaries quoted 213 270 409
City of London median annual salary £65,000 £62,500 £60,000
Median salary % change year-on-year +4.00% +4.17% -
10th Percentile £37,500 £44,750 £37,500
90th Percentile £98,500 £86,250 £84,000
Central London median annual salary £65,000 £60,250 £60,000
% change year-on-year +7.88% +0.42% +4.35%

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

All Process and Methodology Skills
City of London
Permanent vacancies with a requirement for process or methodology skills 9200 10313 15272
As % of all permanent IT jobs advertised in the City of London 90.13% 89.43% 89.11%
Number of salaries quoted 8307 9399 13239
City of London median annual salary £60,000 £60,000 £57,500
Median salary % change year-on-year - +4.35% +4.55%
10th Percentile £36,250 £35,000 £33,750
90th Percentile £93,950 £90,000 £87,500
Central London median annual salary £60,000 £57,500 £57,500
% change year-on-year +4.35% - +4.55%

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 6 months to 20 November 2017.

Salary histogram for Open Source in the City of London

For the 6 months to 20 November 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.

1 126 (48.46%) Agile Software Development
2 98 (37.69%) JavaScript
3 91 (35.00%) Python
3 91 (35.00%) Finance
4 90 (34.62%) Java
5 73 (28.08%) Linux
6 68 (26.15%) Scrum
7 66 (25.38%) Continuous Integration
8 65 (25.00%) C#
9 64 (24.62%) SQL
10 59 (22.69%) .NET
11 55 (21.15%) TDD
12 54 (20.77%) HTML
13 50 (19.23%) CSS
14 47 (18.08%) Windows
14 47 (18.08%) Amazon AWS
15 46 (17.69%) Software Engineering
16 44 (16.92%) Node.js
17 43 (16.54%) AngularJS
18 41 (15.77%) DevOps
18 41 (15.77%) Git (software)
19 39 (15.00%) Degree
19 39 (15.00%) C++
19 39 (15.00%) SQL Server
20 37 (14.23%) Unix
21 36 (13.85%) Test Automation
22 34 (13.08%) RESTful
23 33 (12.69%) Computer Science
24 32 (12.31%) Algorithms
25 31 (11.92%) User Experience

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 16 (6.15%) Apache Spark
2 15 (5.77%) Elasticsearch
3 14 (5.38%) Apache
4 9 (3.46%) Apache Solr
5 8 (3.08%) Tomcat
6 6 (2.31%) Confluence
7 5 (1.92%) CMS
8 3 (1.15%) Apache Pig
8 3 (1.15%) Drupal
8 3 (1.15%) OpenStack
9 2 (0.77%) Apache Geronimo
9 2 (0.77%) JBoss
9 2 (0.77%) Mule
9 2 (0.77%) SAS
9 2 (0.77%) WebLogic
9 2 (0.77%) WebSphere
9 2 (0.77%) WildFly
10 1 (0.38%) Moodle
10 1 (0.38%) MS Exchange
10 1 (0.38%) SharePoint
Applications
1 5 (1.92%) Microsoft Office
2 2 (0.77%) SPSS
3 1 (0.38%) HipChat
Business Applications
1 4 (1.54%) R3 Corda
2 3 (1.15%) Oracle Payables
3 1 (0.38%) Eikon
3 1 (0.38%) Salesforce.com CRM
Cloud Services
1 47 (18.08%) Amazon AWS
2 20 (7.69%) Microsoft Azure
3 15 (5.77%) Cloud Computing
4 13 (5.00%) GitHub
5 12 (4.62%) Amazon EC2
6 10 (3.85%) Amazon S3
6 10 (3.85%) AWS Lambda
6 10 (3.85%) Serverless
7 9 (3.46%) Google Play
8 8 (3.08%) Amazon ElastiCache
9 5 (1.92%) Amazon EMR
9 5 (1.92%) Datadog
9 5 (1.92%) PaaS
10 4 (1.54%) Amazon CloudWatch
10 4 (1.54%) Amazon Kinesis
10 4 (1.54%) Amazon SQS
10 4 (1.54%) AWS CloudFormation
11 3 (1.15%) IaaS
11 3 (1.15%) iTunes
11 3 (1.15%) OpenShift
Communications & Networking
1 12 (4.62%) DVB
2 9 (3.46%) Internet
3 7 (2.69%) TCP/IP
4 6 (2.31%) Firewall
4 6 (2.31%) HTTP
4 6 (2.31%) Wireshark
5 4 (1.54%) Ethernet
5 4 (1.54%) HbbTV
6 3 (1.15%) Cisco IOS
6 3 (1.15%) Network Security
7 2 (0.77%) DHCP
7 2 (0.77%) DKIM
7 2 (0.77%) DMARC
7 2 (0.77%) DNS
7 2 (0.77%) SAN
7 2 (0.77%) VoIP
8 1 (0.38%) Fibre Channel
8 1 (0.38%) Intranet
8 1 (0.38%) Peer-to-Peer Networking
8 1 (0.38%) WAN
Database & Business Intelligence
1 39 (15.00%) SQL Server
2 29 (11.15%) Big Data
3 22 (8.46%) Hadoop
4 19 (7.31%) Relational Database
5 18 (6.92%) MySQL
6 16 (6.15%) NoSQL
7 13 (5.00%) RDBMS
8 12 (4.62%) Amazon DynamoDB
9 11 (4.23%) PostgreSQL
10 10 (3.85%) MongoDB
11 9 (3.46%) Amazon RDS
11 9 (3.46%) Apache Hive
11 9 (3.46%) Blockchain
12 8 (3.08%) Amazon Redshift
12 8 (3.08%) SQLite
13 6 (2.31%) Apache Cassandra
14 5 (1.92%) Sqoop
15 4 (1.54%) Couchbase
15 4 (1.54%) HBase
15 4 (1.54%) SAP HANA
Development Applications
1 41 (15.77%) Git (software)
2 25 (9.62%) Jenkins
2 25 (9.62%) JUnit
3 23 (8.85%) TeamCity
4 22 (8.46%) JIRA
5 15 (5.77%) Subversion
6 14 (5.38%) Mockito
7 12 (4.62%) Selenium
8 11 (4.23%) Cucumber
9 9 (3.46%) Android Studio
9 9 (3.46%) Atlassian Bamboo
10 8 (3.08%) Hudson
10 8 (3.08%) NUnit
10 8 (3.08%) SpecFlow
10 8 (3.08%) Visual Studio
11 7 (2.69%) MSBuild
11 7 (2.69%) Octopus Deploy
11 7 (2.69%) WebDriver
12 6 (2.31%) Maven
12 6 (2.31%) Metasploit
General
1 91 (35.00%) Finance
2 28 (10.77%) Banking
3 19 (7.31%) Retail
4 17 (6.54%) Front Office
5 11 (4.23%) Advertising
6 10 (3.85%) Marketing
7 8 (3.08%) Multimedia
8 7 (2.69%) Law
8 7 (2.69%) Publishing
9 6 (2.31%) Legal
10 4 (1.54%) Games
10 4 (1.54%) Investment Banking
11 3 (1.15%) Telecoms
12 1 (0.38%) Back Office
12 1 (0.38%) Electronics
12 1 (0.38%) Wholesale Banking
Job Titles
1 94 (36.15%) Developer
2 24 (9.23%) .NET Developer
2 24 (9.23%) C# Developer
3 23 (8.85%) Software Engineer
4 22 (8.46%) Lead Developer
5 20 (7.69%) DevOps Engineer
6 18 (6.92%) C# .NET Developer
7 15 (5.77%) Analyst
7 15 (5.77%) Architect
7 15 (5.77%) Senior Developer
8 14 (5.38%) Java Developer
9 13 (5.00%) C++ Software Engineer
10 11 (4.23%) Support Engineer
11 10 (3.85%) Android Developer
11 10 (3.85%) Graduate
11 10 (3.85%) JavaScript Developer
12 9 (3.46%) Junior
12 9 (3.46%) Lead .NET Developer
12 9 (3.46%) Senior Software Engineer
12 9 (3.46%) Tester
Libraries, Frameworks & Software Standards
1 59 (22.69%) .NET
2 54 (20.77%) HTML
3 50 (19.23%) CSS
4 44 (16.92%) Node.js
5 43 (16.54%) AngularJS
6 34 (13.08%) RESTful
7 30 (11.54%) Web Services
8 24 (9.23%) HTML5
9 23 (8.85%) React
10 22 (8.46%) ASP.NET
11 19 (7.31%) ASP.NET Web API
12 14 (5.38%) jQuery
13 13 (5.00%) ASP.NET MVC
13 13 (5.00%) CSS3
14 12 (4.62%) D-Bus
14 12 (4.62%) Kafka
15 11 (4.23%) J2EE
15 11 (4.23%) OpenGL
15 11 (4.23%) Spring
16 10 (3.85%) Sass
Miscellaneous
1 33 (12.69%) Computer Science
2 32 (12.31%) Algorithms
3 31 (11.92%) User Experience
4 24 (9.23%) BBC
4 24 (9.23%) STB
5 12 (4.62%) Digital TV
5 12 (4.62%) IPTV
6 11 (4.23%) Greenfield Project
7 10 (3.85%) Analytical Skills
7 10 (3.85%) Blog
8 8 (3.08%) Data Structures
8 8 (3.08%) Fintech
8 8 (3.08%) Media Streaming
8 8 (3.08%) Mobile App
8 8 (3.08%) MPEG
9 7 (2.69%) Hedge funds
9 7 (2.69%) Online Banking
10 6 (2.31%) Derivative
11 5 (1.92%) Enterprise Software
11 5 (1.92%) Linux Command Line
Operating Systems
1 73 (28.08%) Linux
2 47 (18.08%) Windows
3 37 (14.23%) Unix
4 20 (7.69%) Android
5 10 (3.85%) Apple iOS
5 10 (3.85%) CentOS
5 10 (3.85%) Ubuntu
6 8 (3.08%) Embedded Linux
6 8 (3.08%) Mac OS X
7 6 (2.31%) Windows 7
8 4 (1.54%) Fedora
9 3 (1.15%) VMS
9 3 (1.15%) Windows 8
10 2 (0.77%) Red Hat Enterprise Linux
10 2 (0.77%) Solaris
11 1 (0.38%) Kali Linux
11 1 (0.38%) Windows 10
Processes & Methodologies
1 126 (48.46%) Agile Software Development
2 68 (26.15%) Scrum
3 66 (25.38%) Continuous Integration
4 55 (21.15%) TDD
5 46 (17.69%) Software Engineering
6 41 (15.77%) DevOps
7 36 (13.85%) Test Automation
8 31 (11.92%) BDD
9 30 (11.54%) Microservices
10 29 (11.15%) E-Commerce
11 24 (9.23%) Analytics
12 23 (8.85%) OO
13 21 (8.08%) MVC
14 20 (7.69%) Multithreading
15 19 (7.31%) Mentoring
16 18 (6.92%) Configuration Management
16 18 (6.92%) Continuous Delivery
17 16 (6.15%) Unit Testing
18 15 (5.77%) Kanban
19 14 (5.38%) Domain-Driven Design
Programming Languages
1 98 (37.69%) JavaScript
2 91 (35.00%) Python
3 90 (34.62%) Java
4 65 (25.00%) C#
5 64 (24.62%) SQL
6 39 (15.00%) C++
7 28 (10.77%) Ruby
8 22 (8.46%) C
9 20 (7.69%) PHP
10 19 (7.31%) Scala
11 18 (6.92%) Bash Shell
12 17 (6.54%) Go
12 17 (6.54%) Perl
13 14 (5.38%) TypeScript
14 13 (5.00%) Clojure
15 10 (3.85%) PowerShell
16 9 (3.46%) Objective-C
17 8 (3.08%) F#
17 8 (3.08%) R
18 7 (2.69%) Erlang
Qualifications
1 39 (15.00%) Degree
2 12 (4.62%) Computer Science Degree
3 7 (2.69%) Security Cleared
4 5 (1.92%) Master's Degree
4 5 (1.92%) PhD
5 4 (1.54%) CREST Certified
5 4 (1.54%) ISTQB
5 4 (1.54%) OSCP
6 3 (1.15%) CHECK Team Leader
6 3 (1.15%) DV Cleared
6 3 (1.15%) GPEN
6 3 (1.15%) GXPN
6 3 (1.15%) ITIL Certification
6 3 (1.15%) OSCE
6 3 (1.15%) SANS
7 2 (0.77%) AAT
7 2 (0.77%) BPSS Clearance
7 2 (0.77%) Cisco Certification
7 2 (0.77%) CISSP
7 2 (0.77%) SC Cleared
Quality Assurance & Compliance
1 14 (5.38%) QA
2 4 (1.54%) OIPF
3 2 (0.77%) ISO/IEC 27001
3 2 (0.77%) WAI
4 1 (0.38%) GCP
4 1 (0.38%) GDPR
4 1 (0.38%) Sarbanes-Oxley
System Software
1 24 (9.23%) Docker
2 8 (3.08%) VMware Infrastructure
3 6 (2.31%) Active Directory
4 5 (1.92%) Apache Flume
4 5 (1.92%) Virtual Machines
5 3 (1.15%) HDFS
5 3 (1.15%) KVM
5 3 (1.15%) Virtual Desktop
6 2 (0.77%) Hyper-V
6 2 (0.77%) NFS
7 1 (0.38%) Apache ZooKeeper
7 1 (0.38%) Cygwin
7 1 (0.38%) Firmware
7 1 (0.38%) Microsoft App-V
7 1 (0.38%) vCloud
7 1 (0.38%) VMware ESXi
7 1 (0.38%) vSphere
7 1 (0.38%) XenApp
7 1 (0.38%) XenDesktop
Systems Management
1 22 (8.46%) Ansible
2 21 (8.08%) Puppet
3 19 (7.31%) Opscode Chef
4 13 (5.00%) Terraform
5 7 (2.69%) Kubernetes
6 6 (2.31%) Nessus
7 5 (1.92%) Graphite
7 5 (1.92%) vCenter Server
8 4 (1.54%) Mesos
8 4 (1.54%) systemd
9 3 (1.15%) Kibana
9 3 (1.15%) logstash
9 3 (1.15%) Nmap
9 3 (1.15%) Salt
9 3 (1.15%) SCCM
10 2 (0.77%) Cacti
10 2 (0.77%) Munin
10 2 (0.77%) Nagios
10 2 (0.77%) NetBackup
10 2 (0.77%) SCOM
Vendors
1 28 (10.77%) Microsoft
2 24 (9.23%) Arqiva
2 24 (9.23%) BT
3 23 (8.85%) Oracle
4 11 (4.23%) Google
5 10 (3.85%) Sybase
6 9 (3.46%) VMware
7 8 (3.08%) Apple
7 8 (3.08%) CA
7 8 (3.08%) New Relic
7 8 (3.08%) Red Hat
8 7 (2.69%) Citrix
9 5 (1.92%) Cisco
9 5 (1.92%) SAP
10 4 (1.54%) Broadcom
10 4 (1.54%) IBM
10 4 (1.54%) TIBCO
10 4 (1.54%) Wyse
11 3 (1.15%) Cloudera
11 3 (1.15%) Palo Alto