The following table provides summary statistics for permanent job vacancies advertised in Croydon 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 23 June 2017 with a comparison to the same period in the previous 2 years.

Open Source
London / Croydon
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 19 36 41
Rank change year-on-year +17 +5  
Permanent jobs citing Open Source 19 10 2
As % of all permanent IT jobs advertised in Croydon 10.00% 4.02% 1.00%
As % of the Processes & Methodologies category 11.66% 4.46% 1.27%
Number of salaries quoted 3 5 2
Median salary £65,000 £42,500 £35,000
Median salary % change year-on-year +52.94% +21.42%  
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 Croydon with a requirement for process and methodology skills.

Process & Methodology Skills
Croydon
Permanent job vacancies with a requirement for process and methodology skills 163 224 157
As % of all permanent IT job vacancies advertised in Croydon 85.79% 89.96% 78.11%
Number of salaries quoted 119 206 142
Median salary £55,000 £50,000 £45,000
Median salary % change year-on-year +10.00% +11.11%  
90% offered a salary of more than £37,500 £32,500 £27,300
10% offered a salary of more than £67,500 £65,000 £62,500
UK excluding London median salary £45,000 £45,000 £44,000
% change year-on-year - +2.27%  

Open Source
Job Vacancy Trend in Croydon

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

Job vacancy trend for Open Source in Croydon

Open Source
Salary Trend in Croydon

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

Salary trend for Open Source in Croydon

For the 6 months to 23 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 Croydon region with a requirement for Open Source.

1 24 (72.73%) Agile Software Development
2 19 (57.58%) TDD
2 19 (57.58%) Java
2 19 (57.58%) Go
3 18 (54.55%) Continuous Integration
3 18 (54.55%) Security Cleared
4 17 (51.52%) SC Cleared
4 17 (51.52%) Scala
4 17 (51.52%) Node.js
4 17 (51.52%) JavaScript
5 16 (48.48%) GIS
5 16 (48.48%) Continuous Delivery
6 11 (33.33%) Secure Coding
7 10 (30.30%) QA
8 9 (27.27%) BDD
9 7 (21.21%) Test Automation
10 6 (18.18%) Puppet
10 6 (18.18%) User Stories
10 6 (18.18%) Finance
10 6 (18.18%) Linux
11 5 (15.15%) Jenkins
11 5 (15.15%) Test Strategy
11 5 (15.15%) Amazon AWS
12 4 (12.12%) Git (software)
12 4 (12.12%) Opscode Chef
12 4 (12.12%) Ansible
12 4 (12.12%) DevOps
12 4 (12.12%) Python
12 4 (12.12%) Perl
12 4 (12.12%) Configuration Management

Open Source
Co-occurring IT Skills in Croydon 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:

Cloud Services
1 5 (15.15%) Amazon AWS
2 3 (9.09%) Microsoft Azure
3 2 (6.06%) AWS CloudFormation
4 1 (3.03%) GitHub
4 1 (3.03%) SaaS
Communications & Networking
1 2 (6.06%) Asterisk PBX
1 2 (6.06%) LDAP
1 2 (6.06%) VoIP
Database & Business Intelligence
1 16 (48.48%) GIS
2 2 (6.06%) Big Data
Development Applications
1 5 (15.15%) Jenkins
2 4 (12.12%) Git (software)
3 2 (6.06%) Atlassian Bamboo
3 2 (6.06%) FitNesse
3 2 (6.06%) JUnit
3 2 (6.06%) NUnit
3 2 (6.06%) Selenium
3 2 (6.06%) SonarQube
4 1 (3.03%) Cucumber
4 1 (3.03%) Hudson
General
1 6 (18.18%) Finance
2 2 (6.06%) Marketing
2 2 (6.06%) Telecoms
Job Titles
1 17 (51.52%) Developer
2 16 (48.48%) Software Developer
3 11 (33.33%) Senior Developer
4 10 (30.30%) Senior Software Developer
5 6 (18.18%) JavaScript Developer
5 6 (18.18%) Junior
5 6 (18.18%) Junior Developer
5 6 (18.18%) Junior Software Developer
6 5 (15.15%) Scala Developer
7 4 (12.12%) Head of Delivery
7 4 (12.12%) Java Developer
7 4 (12.12%) Senior Java Developer
8 3 (9.09%) Java Software Developer
8 3 (9.09%) Junior JavaScript Developer
8 3 (9.09%) Senior Java Software Developer
8 3 (9.09%) Senior JavaScript Developer
8 3 (9.09%) Senior Scala Developer
8 3 (9.09%) Test Manager
9 2 (6.06%) Data Analytics Manager
9 2 (6.06%) DevOps Engineer
Libraries, Frameworks & Software Standards
1 17 (51.52%) Node.js
2 2 (6.06%) Apache CXF
2 2 (6.06%) REST
2 2 (6.06%) SOAP
2 2 (6.06%) Web Services
2 2 (6.06%) YAML
3 1 (3.03%) CSS
3 1 (3.03%) HTML
3 1 (3.03%) HTML5
Miscellaneous
1 2 (6.06%) Analytical Skills
1 2 (6.06%) Data Centre
1 2 (6.06%) Linux Command Line
2 1 (3.03%) Mobile App
2 1 (3.03%) User Experience
Operating Systems
1 6 (18.18%) Linux
2 2 (6.06%) AIX
2 2 (6.06%) CentOS
2 2 (6.06%) Red Hat Enterprise Linux
2 2 (6.06%) Solaris
2 2 (6.06%) Unix
Processes & Methodologies
1 24 (72.73%) Agile Software Development
2 19 (57.58%) TDD
3 18 (54.55%) Continuous Integration
4 16 (48.48%) Continuous Delivery
5 11 (33.33%) Secure Coding
6 9 (27.27%) BDD
7 7 (21.21%) Test Automation
8 6 (18.18%) User Stories
9 5 (15.15%) Test Strategy
10 4 (12.12%) Configuration Management
10 4 (12.12%) DevOps
11 3 (9.09%) Analytics
11 3 (9.09%) Biometrics
11 3 (9.09%) Data Analytics
11 3 (9.09%) DNA
11 3 (9.09%) Resource Allocation
11 3 (9.09%) Resource Management
11 3 (9.09%) Risk Analysis
11 3 (9.09%) Use Case
12 2 (6.06%) Digital Marketing
Programming Languages
1 19 (57.58%) Go
1 19 (57.58%) Java
2 17 (51.52%) JavaScript
2 17 (51.52%) Scala
3 4 (12.12%) Perl
3 4 (12.12%) Python
3 4 (12.12%) Ruby
4 2 (6.06%) Bash Shell
4 2 (6.06%) PHP
Qualifications
1 18 (54.55%) Security Cleared
2 17 (51.52%) SC Cleared
3 1 (3.03%) CITP
3 1 (3.03%) DV Cleared
3 1 (3.03%) ISTQB
3 1 (3.03%) ISTQB Advanced Certification
Quality Assurance & Compliance
1 10 (30.30%) QA
System Software
1 2 (6.06%) Docker
1 2 (6.06%) etcd
1 2 (6.06%) flannel
1 2 (6.06%) NFS
Systems Management
1 6 (18.18%) Puppet
2 4 (12.12%) Ansible
2 4 (12.12%) Opscode Chef
3 2 (6.06%) Cacti
3 2 (6.06%) CFEngine
3 2 (6.06%) Consul
3 2 (6.06%) Kubernetes
3 2 (6.06%) Nagios
3 2 (6.06%) Salt
3 2 (6.06%) Sysdig
3 2 (6.06%) Terraform
Vendors
1 2 (6.06%) VMware