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 3 months to 23 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
23 Mar 2017
Same period 2016 Same period 2015
FreeSWITCH
England / London
Rank 560 631 -
Rank change year-on-year +71 -  
Permanent jobs citing FreeSWITCH 7 14 0
As % of all permanent IT jobs advertised in London 0.021% 0.034% -
As % of the Libraries, Frameworks & Software Standards category 0.053% 0.085% -
Number of salaries quoted 4 14 0
Median salary £32,500 £45,000 -
Median salary % change year-on-year -27.77% -  
UK excluding London median salary £50,000 £35,000 £43,250
% change year-on-year +42.85% -19.07%  

FreeSWITCH is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for industry standards, technical specifications and software library and framework skills.

Software Library & Framework Skills
London
Permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 13261 16568 15378
As % of all permanent IT job vacancies advertised in London 39.94% 39.91% 36.84%
Number of salaries quoted 11417 14467 13029
Median salary £57,500 £55,000 £55,000
Median salary % change year-on-year +4.54% -  
90% offered a salary of more than £37,500 £37,500 £36,000
10% offered a salary of more than £80,000 £72,500 £77,500
UK excluding London median salary £40,000 £42,500 £40,000
% change year-on-year -5.88% +6.25%  

FreeSWITCH
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing FreeSWITCH as a proportion of all permanent or contract IT jobs with a match in the Libraries, Frameworks & Software Standards category.

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
Top 30 Related IT Skills in London

For the 6 months to 23 March 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 11 (100.00%) VoIP
2 8 (72.73%) Asterisk PBX
3 7 (63.64%) Telecoms
4 6 (54.55%) Linux
5 5 (45.45%) PHP
6 4 (36.36%) JavaScript
6 4 (36.36%) TCP/IP
7 3 (27.27%) Java
7 3 (27.27%) SQL
7 3 (27.27%) MySQL
7 3 (27.27%) H.323
7 3 (27.27%) JIRA
7 3 (27.27%) Git (software)
7 3 (27.27%) Open Source
7 3 (27.27%) 4G
7 3 (27.27%) DevOps
7 3 (27.27%) A/B Testing
8 2 (18.18%) Continuous Deployment
8 2 (18.18%) Linux Command Line
8 2 (18.18%) Bash Shell
8 2 (18.18%) OpenSIPS
8 2 (18.18%) CoreOS
8 2 (18.18%) Presales
8 2 (18.18%) Continuous Integration
8 2 (18.18%) CentOS
8 2 (18.18%) SSH
8 2 (18.18%) STUN
8 2 (18.18%) RTCP
8 2 (18.18%) RTP
8 2 (18.18%) Project Management

FreeSWITCH
Top Related 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:

Cloud Services
1 1 (9.09%) Amazon AWS
Communications & Networking
1 11 (100.00%) VoIP
2 8 (72.73%) Asterisk PBX
3 4 (36.36%) TCP/IP
4 3 (27.27%) 4G
4 3 (27.27%) H.323
5 2 (18.18%) DNS
5 2 (18.18%) Firewall
5 2 (18.18%) HTTP
5 2 (18.18%) LAN
5 2 (18.18%) RTCP
5 2 (18.18%) RTP
5 2 (18.18%) SSH
5 2 (18.18%) STUN
5 2 (18.18%) VPN
5 2 (18.18%) WAN
6 1 (9.09%) Internet
6 1 (9.09%) PSTN
Database & Business Intelligence
1 3 (27.27%) MySQL
Development Applications
1 3 (27.27%) Git (software)
1 3 (27.27%) JIRA
General
1 7 (63.64%) Telecoms
Job Titles
1 5 (45.45%) VoIP Engineer
2 2 (18.18%) 3rd Line Engineer
2 2 (18.18%) Administrator
2 2 (18.18%) Analyst
2 2 (18.18%) Applications Support
2 2 (18.18%) Applications Support Analyst
2 2 (18.18%) Development Engineer
2 2 (18.18%) Implementation Engineer
2 2 (18.18%) Support Analyst
3 1 (9.09%) 2nd Line Support
3 1 (9.09%) 2nd Line Technical Support
3 1 (9.09%) 3rd Line Support
3 1 (9.09%) Developer
3 1 (9.09%) Full Stack Developer
3 1 (9.09%) LAN Engineer
3 1 (9.09%) LAN/WAN Engineer
3 1 (9.09%) SQL Support Analyst
3 1 (9.09%) Support Engineer
3 1 (9.09%) Technical Support
3 1 (9.09%) WAN Engineer
Libraries, Frameworks & Software Standards
1 1 (9.09%) WebRTC
Miscellaneous
1 2 (18.18%) Linux Command Line
2 1 (9.09%) Analytical Skills
2 1 (9.09%) Mobile App
Operating Systems
1 6 (54.55%) Linux
2 2 (18.18%) CentOS
2 2 (18.18%) CoreOS
Processes & Methodologies
1 3 (27.27%) A/B Testing
1 3 (27.27%) DevOps
1 3 (27.27%) Open Source
2 2 (18.18%) Continuous Deployment
2 2 (18.18%) Continuous Integration
2 2 (18.18%) CRM
2 2 (18.18%) Presales
2 2 (18.18%) PRINCE2
2 2 (18.18%) Project Management
Programming Languages
1 5 (45.45%) PHP
2 4 (36.36%) JavaScript
3 3 (27.27%) Java
3 3 (27.27%) SQL
4 2 (18.18%) Bash Shell
4 2 (18.18%) C#
4 2 (18.18%) Python
5 1 (9.09%) C
5 1 (9.09%) Go
Qualifications
1 1 (9.09%) Degree
Quality Assurance & Compliance
1 1 (9.09%) SLA
System Software
1 2 (18.18%) OpenSIPS
2 1 (9.09%) Docker
Systems Management
1 1 (9.09%) Kubernetes
Vendors
1 2 (18.18%) Salesforce.com