Period
to 14 April 2021

The following table provides summary statistics for permanent job vacancies with a requirement for Kamailio skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Kamailio over the 6 months to 14 April 2021 with a comparison to the same period in the previous 2 years.

Kamailio (formerly OpenSER)
UK
6 months to
14 Apr 2021
Same period 2020 Same period 2019
Rank 821 952 -
Rank change year-on-year +131 - +1157
Permanent jobs citing Kamailio 28 28 0
As % of all permanent jobs advertised in the UK 0.034% 0.025% -
As % of the System Software category 0.18% 0.14% -
Number of salaries quoted 27 27 0
Median annual salary (50th Percentile) £52,500 £62,500 -
Median % change year-on-year -16.00% - -
UK excluding London median annual salary £55,000 £62,500 -
% change year-on-year -12.00% - -

Kamailio is in the System Software category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for system software skills.

All System Software Skills
UK
Permanent vacancies with a requirement for system software skills 15,495 19,389 24,007
As % of all permanent IT jobs advertised in the UK 18.61% 17.14% 16.11%
Number of salaries quoted 12,605 15,975 19,662
10th Percentile £30,000 £26,250 £26,000
25th Percentile £38,750 £35,000 £33,750
Median annual salary (50th Percentile) £55,000 £50,000 £50,000
Median % change year-on-year +10.00% - +11.11%
75th Percentile £75,000 £70,000 £68,750
90th Percentile £90,000 £86,250 £83,750
UK excluding London median annual salary £47,500 £45,000 £42,500
% change year-on-year +5.56% +5.88% +6.25%

Kamailio
Job Vacancy Trend

Job postings citing Kamailio as a proportion of all IT jobs advertised.

Job vacancy trend for Kamailio in the UK

Kamailio
Salary Trend

3-month moving average salary quoted in jobs citing Kamailio.

Salary trend for Kamailio in the UK

Kamailio
Salary Histogram

Salary distribution for jobs citing Kamailio over the 6 months to 14 April 2021.

Salary histogram for Kamailio in the UK

Kamailio
Top 11 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Kamailio within the UK over the 6 months to 14 April 2021. 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
England +154 28 £52,500 -14.29% 2
London +128 21 £50,000 -9.09% 1
UK excluding London +104 7 £55,000 -12.00% 1
South East +91 6 £55,000 -12.00% 1
Midlands +36 6 £55,000 -12.00%
West Midlands - 6 £55,000 -
North of England - 4 £52,500 -
Work from Home -141 3 £52,500 -16.00% 1
East of England - 3 £52,500 -
Yorkshire - 3 £52,500 -
North East - 1 - -

For the 6 months to 14 April 2021, IT jobs citing Kamailio also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads with a requirement for Kamailio.

1 27 (96.43%) Asterisk PBX
2 25 (89.29%) Open Source
3 24 (85.71%) Linux
4 19 (67.86%) Debian
4 19 (67.86%) C
5 15 (53.57%) VoIP
5 15 (53.57%) WebRTC
6 14 (50.00%) Firewall
6 14 (50.00%) PBX
6 14 (50.00%) Internet
6 14 (50.00%) High Availability
6 14 (50.00%) Degree
7 12 (42.86%) Load Balancing
7 12 (42.86%) Computer Science
7 12 (42.86%) Games
7 12 (42.86%) XMPP
7 12 (42.86%) Risk Assessment
7 12 (42.86%) Mitel
7 12 (42.86%) Penetration Testing
7 12 (42.86%) GENBAND
7 12 (42.86%) FreeSWITCH
7 12 (42.86%) Puppet
7 12 (42.86%) Bash Shell
7 12 (42.86%) SonicWALL
7 12 (42.86%) Continuous Integration
7 12 (42.86%) ZABBIX
7 12 (42.86%) Postfix
7 12 (42.86%) nginx
7 12 (42.86%) BGP
7 12 (42.86%) Apache

Kamailio
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 12 (42.86%) Apache
1 12 (42.86%) ejabberd
1 12 (42.86%) IIS
1 12 (42.86%) nginx
1 12 (42.86%) Tomcat
Cloud Services
1 7 (25.00%) AWS
2 3 (10.71%) SaaS
Communications & Networking
1 27 (96.43%) Asterisk PBX
2 15 (53.57%) VoIP
3 14 (50.00%) Firewall
3 14 (50.00%) Internet
3 14 (50.00%) PBX
4 12 (42.86%) BGP
4 12 (42.86%) Diameter Protocol
4 12 (42.86%) LAN
4 12 (42.86%) SNMP
4 12 (42.86%) VPN
5 10 (35.71%) RTP
6 3 (10.71%) STUN
7 1 (3.57%) Softswitch
Database & Business Intelligence
1 12 (42.86%) SQL Server
General
1 12 (42.86%) Games
2 3 (10.71%) Telecoms
3 1 (3.57%) Billing
Job Titles
1 15 (53.57%) Systems Engineer
2 12 (42.86%) Network Engineer
2 12 (42.86%) Network Systems Engineer
3 11 (39.29%) VoIP Engineer
4 4 (14.29%) Developer
4 4 (14.29%) Software Developer
4 4 (14.29%) Software Engineer
4 4 (14.29%) VoIP Developer
5 3 (10.71%) Applications Engineer
5 3 (10.71%) Design Engineer
5 3 (10.71%) DevOps Engineer
5 3 (10.71%) DevOps Systems Engineer
5 3 (10.71%) Open Source Engineer
5 3 (10.71%) Unified Communications Engineer
Libraries, Frameworks & Software Standards
1 15 (53.57%) WebRTC
2 12 (42.86%) FreeSWITCH
2 12 (42.86%) XMPP
3 7 (25.00%) CSS
3 7 (25.00%) HTML
Miscellaneous
1 12 (42.86%) Analytical Skills
1 12 (42.86%) Data Centre
2 7 (25.00%) Media Streaming
Operating Systems
1 24 (85.71%) Linux
2 19 (67.86%) Debian
3 12 (42.86%) Windows
4 7 (25.00%) CentOS
4 7 (25.00%) Red Hat Enterprise Linux
Processes & Methodologies
1 25 (89.29%) Open Source
2 14 (50.00%) High Availability
3 12 (42.86%) Architectural Design
3 12 (42.86%) Computer Science
3 12 (42.86%) Continuous Integration
3 12 (42.86%) Load Balancing
3 12 (42.86%) Penetration Testing
3 12 (42.86%) Risk Assessment
4 8 (28.57%) Software Engineering
5 7 (25.00%) Agile Software Development
5 7 (25.00%) Functional Testing
5 7 (25.00%) Secure Coding
5 7 (25.00%) Test Automation
6 3 (10.71%) DevOps
7 2 (7.14%) Capacity Planning
8 1 (3.57%) Web Development
Programming Languages
1 19 (67.86%) C
2 12 (42.86%) Bash Shell
2 12 (42.86%) Perl
2 12 (42.86%) PHP
3 7 (25.00%) C++
3 7 (25.00%) JavaScript
3 7 (25.00%) Lua
4 4 (14.29%) Python
5 1 (3.57%) Assembly Language
Qualifications
1 14 (50.00%) Degree
2 12 (42.86%) Computer Science Degree
System Software
1 12 (42.86%) iptables
1 12 (42.86%) KVM
1 12 (42.86%) Postfix
1 12 (42.86%) QEMU
2 9 (32.14%) OpenSIPS
Systems Management
1 12 (42.86%) Ansible
1 12 (42.86%) Galera Cluster
1 12 (42.86%) HAProxy
1 12 (42.86%) Puppet
1 12 (42.86%) ZABBIX
Vendors
1 12 (42.86%) Cisco
1 12 (42.86%) GENBAND
1 12 (42.86%) HP
1 12 (42.86%) Juniper
1 12 (42.86%) Microsoft
1 12 (42.86%) Mitel
1 12 (42.86%) Nortel
1 12 (42.86%) Percona
1 12 (42.86%) SonicWALL
2 2 (7.14%) Sonus
2 2 (7.14%) Yealink