The following table provides summary statistics for permanent job vacancies 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 25 June 2017 with a comparison to the same period in the previous 2 years.

FreeSWITCH
UK
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 862 906 965
Rank change year-on-year +44 +59  
Permanent jobs citing FreeSWITCH 10 18 6
As % of all permanent IT jobs advertised in the UK 0.011% 0.019% 0.005%
As % of the Libraries, Frameworks & Software Standards category 0.028% 0.048% 0.014%
Number of salaries quoted 9 16 6
Median salary £57,500 £37,500 £41,500
Median salary % change year-on-year +53.33% -9.63%  
UK excluding London median salary £40,000 £35,000 £41,500
% change year-on-year +14.28% -15.66%  

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 with a requirement for industry standards, technical specifications and software library and framework skills.

Software Library & Framework Skills
UK
Permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 36096 37770 42141
As % of all permanent IT job vacancies advertised in the UK 40.98% 38.91% 38.07%
Number of salaries quoted 30323 32819 36049
Median salary £47,000 £45,000 £45,000
Median salary % change year-on-year +4.44% -  
90% offered a salary of more than £32,500 £31,000 £30,000
10% offered a salary of more than £70,000 £65,000 £70,000
UK excluding London median salary £42,500 £40,000 £40,000
% change year-on-year +6.25% -  

FreeSWITCH
Job Vacancy Trend

The job posting trend of jobs advertised 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 the UK

FreeSWITCH
Salary Trend

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

Salary trend for FreeSWITCH in the UK

FreeSWITCH
Salary Histogram

The salary distribution of IT jobs citing FreeSWITCH over the 3 months to 25 June 2017.

Salary histogram for FreeSWITCH in the UK

FreeSWITCH
Top 6 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing FreeSWITCH within the UK over the 3 months to 25 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +44 10 £57,500 +53.33%
London +27 8 £60,000 -20.00%
Croydon - 3 £30,000 -
City of London - 3 £62,500 -
North West - 2 £40,000 -
Manchester - 1 £40,000 -

For the 6 months to 25 June 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 with a requirement for FreeSWITCH.

1 24 (100.00%) VoIP
2 20 (83.33%) Linux
3 15 (62.50%) Open Source
4 14 (58.33%) Telecoms
5 10 (41.67%) Asterisk PBX
6 9 (37.50%) TCP/IP
7 8 (33.33%) DNS
7 8 (33.33%) Python
7 8 (33.33%) Docker
7 8 (33.33%) Git (software)
8 7 (29.17%) BroadSoft
8 7 (29.17%) DevOps
9 6 (25.00%) Continuous Integration
9 6 (25.00%) LAN
9 6 (25.00%) SQL
9 6 (25.00%) WAN
9 6 (25.00%) Nagios
10 5 (20.83%) Windows
10 5 (20.83%) HTTP
10 5 (20.83%) MySQL
10 5 (20.83%) Apache
10 5 (20.83%) SSH
10 5 (20.83%) CentOS
10 5 (20.83%) Bash Shell
10 5 (20.83%) Microsoft Azure
10 5 (20.83%) CoreOS
10 5 (20.83%) Kamailio
10 5 (20.83%) OpenSIPS
10 5 (20.83%) Windows Server
11 4 (16.67%) Sensu

FreeSWITCH
Co-occurring IT Skills 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 5 (20.83%) Apache
2 4 (16.67%) Tomcat
3 1 (4.17%) IIS
Cloud Services
1 5 (20.83%) Microsoft Azure
2 4 (16.67%) Amazon AWS
2 4 (16.67%) Amazon EC2
2 4 (16.67%) Amazon ELB
2 4 (16.67%) Amazon S3
3 1 (4.17%) Office 365
Communications & Networking
1 24 (100.00%) VoIP
2 10 (41.67%) Asterisk PBX
3 9 (37.50%) TCP/IP
4 8 (33.33%) DNS
5 6 (25.00%) LAN
5 6 (25.00%) WAN
6 5 (20.83%) HTTP
6 5 (20.83%) SSH
7 4 (16.67%) RTCP
7 4 (16.67%) RTP
7 4 (16.67%) Softswitch
7 4 (16.67%) STUN
7 4 (16.67%) VoWiFi
7 4 (16.67%) Wireshark
8 3 (12.50%) 4G
8 3 (12.50%) Firewall
8 3 (12.50%) H.323
8 3 (12.50%) SSL
8 3 (12.50%) VoLTE
8 3 (12.50%) VPN
Database & Business Intelligence
1 5 (20.83%) MySQL
2 4 (16.67%) InfluxDB
3 1 (4.17%) PostgreSQL
3 1 (4.17%) SQL Server
Development Applications
1 8 (33.33%) Git (software)
2 4 (16.67%) Jenkins
2 4 (16.67%) Maven
2 4 (16.67%) Subversion
3 1 (4.17%) JIRA
3 1 (4.17%) Team Foundation Server
3 1 (4.17%) Visual Studio Team System
General
1 14 (58.33%) Telecoms
2 1 (4.17%) Billing
Job Titles
1 13 (54.17%) VoIP Engineer
2 4 (16.67%) DevOps Engineer
2 4 (16.67%) Linux Engineer
2 4 (16.67%) Network Engineer
2 4 (16.67%) Operations Engineer
3 3 (12.50%) AWS DevOps
3 3 (12.50%) AWS DevOps Engineer
3 3 (12.50%) AWS Engineer
3 3 (12.50%) Azure DevOps
3 3 (12.50%) Azure DevOps Engineer
3 3 (12.50%) Azure Engineer
3 3 (12.50%) Design Engineer
3 3 (12.50%) Network Operations Engineer
3 3 (12.50%) Open Source Engineer
4 2 (8.33%) 3rd Line Engineer
4 2 (8.33%) Administrator
4 2 (8.33%) Development Engineer
4 2 (8.33%) LAN Engineer
4 2 (8.33%) LAN/WAN Engineer
4 2 (8.33%) WAN Engineer
Libraries, Frameworks & Software Standards
1 4 (16.67%) LAMP
1 4 (16.67%) Sensu
2 1 (4.17%) LAPP Stack
Miscellaneous
1 4 (16.67%) Analytical Skills
1 4 (16.67%) Handset
2 2 (8.33%) Social Media
3 1 (4.17%) Data Centre
3 1 (4.17%) Mobile App
3 1 (4.17%) Replication
Operating Systems
1 20 (83.33%) Linux
2 5 (20.83%) CentOS
2 5 (20.83%) CoreOS
2 5 (20.83%) Windows
2 5 (20.83%) Windows Server
3 4 (16.67%) Unix
3 4 (16.67%) VMS
Processes & Methodologies
1 15 (62.50%) Open Source
2 7 (29.17%) DevOps
3 6 (25.00%) Continuous Integration
4 4 (16.67%) Configuration Management
4 4 (16.67%) Task Automation
5 3 (12.50%) A/B Testing
6 2 (8.33%) Continuous Deployment
6 2 (8.33%) CRM
6 2 (8.33%) Presales
6 2 (8.33%) PRINCE2
6 2 (8.33%) Project Management
7 1 (4.17%) Disaster Recovery
7 1 (4.17%) High Availability
7 1 (4.17%) Load Balancing
7 1 (4.17%) Network Design
Programming Languages
1 8 (33.33%) Python
2 6 (25.00%) SQL
3 5 (20.83%) Bash Shell
4 4 (16.67%) Erlang
4 4 (16.67%) Perl
4 4 (16.67%) Ruby
5 3 (12.50%) PHP
6 2 (8.33%) C#
6 2 (8.33%) Java
7 1 (4.17%) JavaScript
7 1 (4.17%) PowerShell
7 1 (4.17%) Shell Script
Qualifications
1 4 (16.67%) Degree
2 1 (4.17%) CCNP
2 1 (4.17%) Cisco Certification
Quality Assurance & Compliance
1 1 (4.17%) SLA
System Software
1 8 (33.33%) Docker
2 5 (20.83%) Kamailio
2 5 (20.83%) OpenSIPS
3 4 (16.67%) Virtual Machines
4 3 (12.50%) Xen
5 1 (4.17%) Active Directory
5 1 (4.17%) BIND 9
5 1 (4.17%) Hyper-V
5 1 (4.17%) iptables
Systems Management
1 6 (25.00%) Nagios
2 4 (16.67%) Cacti
2 4 (16.67%) Grafana
2 4 (16.67%) Graphite
2 4 (16.67%) Munin
2 4 (16.67%) Opscode Chef
2 4 (16.67%) Puppet
2 4 (16.67%) Salt
2 4 (16.67%) Terraform
3 1 (4.17%) Kubernetes
3 1 (4.17%) Prometheus
Vendors
1 7 (29.17%) BroadSoft
2 4 (16.67%) Ericsson
2 4 (16.67%) GENBAND
2 4 (16.67%) Oracle
2 4 (16.67%) Sonus
3 2 (8.33%) Salesforce.com
4 1 (4.17%) Huawei
4 1 (4.17%) Microsoft
4 1 (4.17%) Sage