Period
to 20 November 2017

The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for FreeSWITCH skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited FreeSWITCH over the 6 months to 20 November 2017 with a comparison to the same period in the previous 2 years.

FreeSWITCH
England > London
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 833 831 914
Rank change year-on-year -2 +83 +17
Permanent jobs citing FreeSWITCH 12 12 11
As % of all permanent IT jobs advertised in London 0.016% 0.016% 0.012%
As % of the Libraries, Frameworks & Software Standards category 0.041% 0.040% 0.033%
Number of salaries quoted 12 12 11
London median annual salary £67,500 £51,250 £45,000
Median salary % change year-on-year +31.71% +13.89% -10.00%
10th Percentile £60,125 £31,250 £30,000
90th Percentile £68,750 £62,000 £76,250
England median annual salary £65,000 £45,000 £43,250
% change year-on-year +44.44% +4.05% +15.33%

FreeSWITCH is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
London
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 29334 30022 33518
As % of all permanent IT jobs advertised in London 39.03% 40.11% 37.62%
Number of salaries quoted 23900 26436 28720
London median annual salary £60,000 £58,000 £55,000
Median salary % change year-on-year +3.45% +5.45% +4.76%
10th Percentile £36,250 £35,000 £34,500
90th Percentile £90,000 £86,250 £83,750
England median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -

FreeSWITCH
Job Vacancy Trend in London

Job postings citing FreeSWITCH as a percentage of all IT jobs advertised in London.

Job vacancy trend for FreeSWITCH in London

FreeSWITCH
Salary Trend in London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing FreeSWITCH in London.

Salary trend for FreeSWITCH in London

FreeSWITCH
Salary Histogram in London

The salary distribution of IT jobs citing FreeSWITCH in London over the 6 months to 20 November 2017.

Salary histogram for FreeSWITCH in London

FreeSWITCH
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing FreeSWITCH within the London region over the 6 months to 20 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London - 3 £62,500 -
South London - 1 £30,000 -
FreeSWITCH
England

For the 6 months to 20 November 2017, IT jobs citing FreeSWITCH 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 London region with a requirement for FreeSWITCH.

1 12 (100.00%) Linux
2 11 (91.67%) Python
2 11 (91.67%) VoIP
2 11 (91.67%) MySQL
2 11 (91.67%) Nagios
2 11 (91.67%) Git (software)
2 11 (91.67%) Puppet
2 11 (91.67%) DevOps
3 10 (83.33%) Cacti
3 10 (83.33%) Munin
3 10 (83.33%) Telecoms
3 10 (83.33%) Subversion
3 10 (83.33%) Perl
4 9 (75.00%) Bash Shell
5 8 (66.67%) nginx
5 8 (66.67%) HTTP
5 8 (66.67%) DNS
5 8 (66.67%) SSL
5 8 (66.67%) Configuration Management
5 8 (66.67%) HAProxy
5 8 (66.67%) Kamailio
5 8 (66.67%) LEMP Stack
6 7 (58.33%) Linux Command Line
6 7 (58.33%) PHP-FPM
6 7 (58.33%) Private Cloud
6 7 (58.33%) BIND 9
6 7 (58.33%) VMware ESXi
6 7 (58.33%) WSGI
6 7 (58.33%) MariaDB
6 7 (58.33%) uWSGI

FreeSWITCH
Co-occurring IT Skills in 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 8 (66.67%) nginx
2 7 (58.33%) Confluence
2 7 (58.33%) uWSGI
3 4 (33.33%) Apache
3 4 (33.33%) Tomcat
Cloud Services
1 4 (33.33%) Amazon AWS
2 3 (25.00%) Amazon EC2
2 3 (25.00%) Amazon ELB
2 3 (25.00%) Amazon S3
2 3 (25.00%) Microsoft Azure
3 1 (8.33%) IBM Cloud
3 1 (8.33%) SoftLayer
Communications & Networking
1 11 (91.67%) VoIP
2 8 (66.67%) DNS
2 8 (66.67%) HTTP
2 8 (66.67%) SSL
3 7 (58.33%) BGP
3 7 (58.33%) Cisco ASA
3 7 (58.33%) Cisco IOS
3 7 (58.33%) SMTP
3 7 (58.33%) SNMP
3 7 (58.33%) VLAN
4 3 (25.00%) Wireshark
5 2 (16.67%) Asterisk PBX
5 2 (16.67%) RTP
5 2 (16.67%) TCP/IP
6 1 (8.33%) LAN
6 1 (8.33%) Reverse Proxy
6 1 (8.33%) RTCP
6 1 (8.33%) SSH
6 1 (8.33%) STUN
6 1 (8.33%) WAN
Database & Business Intelligence
1 11 (91.67%) MySQL
2 7 (58.33%) MariaDB
3 3 (25.00%) InfluxDB
4 1 (8.33%) Amazon DynamoDB
4 1 (8.33%) Amazon Redshift
4 1 (8.33%) Couchbase
4 1 (8.33%) MongoDB
4 1 (8.33%) NoSQL
4 1 (8.33%) Redis
Development Applications
1 11 (91.67%) Git (software)
2 10 (83.33%) Subversion
3 7 (58.33%) JIRA
4 3 (25.00%) Jenkins
4 3 (25.00%) Maven
General
1 10 (83.33%) Telecoms
Job Titles
1 11 (91.67%) DevOps Engineer
2 7 (58.33%) Senior DevOps
2 7 (58.33%) Senior DevOps Engineer
3 5 (41.67%) DevOps Systems Engineer
3 5 (41.67%) Linux DevOps Engineer
3 5 (41.67%) Linux Engineer
3 5 (41.67%) Linux Systems Engineer
3 5 (41.67%) Linux/Unix DevOps
3 5 (41.67%) Systems Engineer
4 4 (33.33%) Senior Linux Engineer
4 4 (33.33%) Senior Linux Systems Engineer
4 4 (33.33%) Senior Systems Engineer
5 3 (25.00%) AWS DevOps
5 3 (25.00%) AWS DevOps Engineer
5 3 (25.00%) AWS Engineer
5 3 (25.00%) Azure DevOps
5 3 (25.00%) Azure DevOps Engineer
5 3 (25.00%) Azure Engineer
6 1 (8.33%) Cloud Engineer
6 1 (8.33%) Linux Scripter
Libraries, Frameworks & Software Standards
1 8 (66.67%) LEMP Stack
2 7 (58.33%) Django
2 7 (58.33%) PHP-FPM
2 7 (58.33%) WSGI
3 4 (33.33%) LAMP
4 3 (25.00%) Sensu
5 1 (8.33%) CCXML
5 1 (8.33%) Elastic Stack
5 1 (8.33%) Kafka
5 1 (8.33%) Memcached
5 1 (8.33%) VXML
Miscellaneous
1 7 (58.33%) Linux Command Line
1 7 (58.33%) Private Cloud
1 7 (58.33%) Replication
1 7 (58.33%) Wiki
2 1 (8.33%) Analytical Skills
2 1 (8.33%) Computer Science
2 1 (8.33%) Data Centre
2 1 (8.33%) Social Media
Operating Systems
1 12 (100.00%) Linux
2 7 (58.33%) Debian
2 7 (58.33%) Ubuntu
3 3 (25.00%) VMS
4 1 (8.33%) CentOS
4 1 (8.33%) CoreOS
Processes & Methodologies
1 11 (91.67%) DevOps
2 8 (66.67%) Configuration Management
3 7 (58.33%) BCP
3 7 (58.33%) Release Management
4 3 (25.00%) Continuous Integration
4 3 (25.00%) Open Source
4 3 (25.00%) Task Automation
5 1 (8.33%) High Availability
Programming Languages
1 11 (91.67%) Python
2 10 (83.33%) Perl
3 9 (75.00%) Bash Shell
4 7 (58.33%) PHP
5 4 (33.33%) Ruby
6 3 (25.00%) Erlang
6 3 (25.00%) SQL
Qualifications
1 2 (16.67%) Degree
2 1 (8.33%) Computer Science Degree
2 1 (8.33%) Master's Degree
System Software
1 8 (66.67%) Kamailio
2 7 (58.33%) BIND 9
2 7 (58.33%) Postfix
2 7 (58.33%) VMware ESXi
2 7 (58.33%) VMware Infrastructure
3 4 (33.33%) Docker
4 3 (25.00%) Virtual Machines
5 1 (8.33%) Apache ZooKeeper
5 1 (8.33%) OpenSIPS
5 1 (8.33%) Xen
Systems Management
1 11 (91.67%) Nagios
1 11 (91.67%) Puppet
2 10 (83.33%) Cacti
2 10 (83.33%) Munin
3 8 (66.67%) HAProxy
4 4 (33.33%) Grafana
4 4 (33.33%) Graphite
5 3 (25.00%) Opscode Chef
5 3 (25.00%) Salt
5 3 (25.00%) Terraform
6 1 (8.33%) Ansible
6 1 (8.33%) Consul
6 1 (8.33%) Icinga
6 1 (8.33%) Riemann
Vendors
1 7 (58.33%) Cisco
1 7 (58.33%) Dell
1 7 (58.33%) VMware
2 1 (8.33%) Rackspace