The following table provides summary statistics for permanent job vacancies advertised in Croydon with a requirement for VoIP skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited VoIP over the 3 months to 25 June 2017 with a comparison to the same period in the previous 2 years.

Voice Over IP (VoIP)
London / Croydon
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 27 37 22
Rank change year-on-year +10 -15  
Permanent jobs citing VoIP 13 8 20
As % of all permanent IT jobs advertised in Croydon 6.91% 3.25% 10.26%
As % of the Communications & Networking category 30.23% 11.59% 51.28%
Number of salaries quoted 12 8 16
Median salary £52,500 £27,500 £27,500
Median salary % change year-on-year +90.90% -  
UK excluding London median salary £38,000 £37,500 £39,500
% change year-on-year +1.33% -5.06%  

VoIP is in the communications and computer networking 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 communications and computer networking skills.

Communications & Computer Network Skills
Croydon
Permanent job vacancies with a requirement for communications and computer networking skills 43 69 39
As % of all permanent IT job vacancies advertised in Croydon 22.87% 28.05% 20.00%
Number of salaries quoted 34 66 30
Median salary £37,000 £47,500 £35,000
Median salary % change year-on-year -22.10% +35.71%  
90% offered a salary of more than £16,500 £27,350 £25,500
10% offered a salary of more than £52,500 £55,000 £55,750
UK excluding London median salary £42,500 £42,500 £42,000
% change year-on-year - +1.19%  

VoIP
Job Vacancy Trend in Croydon

The job posting trend of jobs advertised in Croydon citing VoIP as a proportion of all permanent or contract IT jobs with a match in the Communications & Networking category.

Job vacancy trend for VoIP in Croydon

VoIP
Salary Trend in Croydon

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

Salary trend for VoIP in Croydon

VoIP
Salary Histogram in Croydon

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

Salary histogram for VoIP in Croydon

For the 6 months to 25 June 2017, IT jobs citing VoIP 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 VoIP.

1 10 (40.00%) Telecoms
1 10 (40.00%) CCNP
1 10 (40.00%) Cisco Certification
2 9 (36.00%) Juniper
2 9 (36.00%) Cisco
2 9 (36.00%) OSPF
3 8 (32.00%) EIGRP
3 8 (32.00%) Firewall
3 8 (32.00%) Unified Communications
4 7 (28.00%) REST
4 7 (28.00%) User Stories
4 7 (28.00%) SDLC
4 7 (28.00%) Enterprise Architecture
4 7 (28.00%) Agile Software Development
4 7 (28.00%) BGP
4 7 (28.00%) ISEB
4 7 (28.00%) UML
4 7 (28.00%) SOA
4 7 (28.00%) LAN
4 7 (28.00%) WAN
5 6 (24.00%) Network Security
6 5 (20.00%) SonicWALL
6 5 (20.00%) CentOS
6 5 (20.00%) Cisco ASA
6 5 (20.00%) WatchGuard
6 5 (20.00%) Network Design
6 5 (20.00%) Bash Shell
6 5 (20.00%) VPN
6 5 (20.00%) CheckPoint
6 5 (20.00%) Linux

VoIP
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:

Application Platforms
1 2 (8.00%) Exchange Server 2010
1 2 (8.00%) Exchange Server 2013
1 2 (8.00%) MS Exchange
Applications
1 2 (8.00%) Microsoft Office
Cloud Services
1 1 (4.00%) SaaS
Communications & Networking
1 9 (36.00%) OSPF
2 8 (32.00%) EIGRP
2 8 (32.00%) Firewall
2 8 (32.00%) Unified Communications
3 7 (28.00%) BGP
3 7 (28.00%) LAN
3 7 (28.00%) WAN
4 6 (24.00%) Network Security
5 5 (20.00%) Cisco ASA
5 5 (20.00%) NetScreen
5 5 (20.00%) VPN
6 4 (16.00%) DNS
7 3 (12.00%) Cisco IOS
7 3 (12.00%) Cisco Nexus
7 3 (12.00%) HTTP
7 3 (12.00%) MPLS
7 3 (12.00%) SSH
7 3 (12.00%) SSL
7 3 (12.00%) TCP/IP
7 3 (12.00%) VPLS
Development Applications
1 2 (8.00%) Git (software)
General
1 10 (40.00%) Telecoms
2 1 (4.00%) Banking
2 1 (4.00%) Finance
Job Titles
1 12 (48.00%) Network Engineer
2 10 (40.00%) Analyst
3 7 (28.00%) Business Analyst
3 7 (28.00%) Business Systems Analyst
3 7 (28.00%) SDLC Business Analyst
3 7 (28.00%) Systems Analyst
3 7 (28.00%) Telecoms Analyst
3 7 (28.00%) Telecoms Business Analyst
4 4 (16.00%) 2nd Line Engineer
4 4 (16.00%) 2nd Line Network Engineer
5 3 (12.00%) Network Operations Engineer
5 3 (12.00%) Operations Engineer
6 2 (8.00%) 3rd Line Engineer
6 2 (8.00%) Active Directory Analyst
6 2 (8.00%) Active Directory Support
6 2 (8.00%) Exchange Support
6 2 (8.00%) Juniper Engineer
6 2 (8.00%) Nagios Administrator
6 2 (8.00%) Service Desk Support
6 2 (8.00%) Service Desk Support Analyst
Libraries, Frameworks & Software Standards
1 7 (28.00%) REST
2 3 (12.00%) FreeSWITCH
Miscellaneous
1 4 (16.00%) Analytical Skills
2 3 (12.00%) Data Centre
3 2 (8.00%) Social Media
Operating Systems
1 5 (20.00%) CentOS
1 5 (20.00%) Linux
2 3 (12.00%) CoreOS
3 2 (8.00%) Windows
3 2 (8.00%) Windows Server
3 2 (8.00%) Windows Server 2008
3 2 (8.00%) Windows Server 2012
3 2 (8.00%) Windows XP
Processes & Methodologies
1 7 (28.00%) Agile Software Development
1 7 (28.00%) Enterprise Architecture
1 7 (28.00%) SDLC
1 7 (28.00%) SOA
1 7 (28.00%) UML
1 7 (28.00%) User Stories
2 5 (20.00%) Network Design
3 2 (8.00%) Configuration Management
3 2 (8.00%) Open Source
4 1 (4.00%) B2B
4 1 (4.00%) Business Analysis
4 1 (4.00%) Business Development
4 1 (4.00%) Business Intelligence
4 1 (4.00%) CRM
4 1 (4.00%) Kalman Filter
4 1 (4.00%) People Management
4 1 (4.00%) Security Operations
4 1 (4.00%) Service Delivery
4 1 (4.00%) Telesales
4 1 (4.00%) Time Management
Programming Languages
1 5 (20.00%) Bash Shell
2 2 (8.00%) Perl
Qualifications
1 10 (40.00%) CCNP
1 10 (40.00%) Cisco Certification
2 7 (28.00%) ISEB
3 5 (20.00%) CCNA
4 3 (12.00%) Degree
5 2 (8.00%) JNCIP
5 2 (8.00%) JNCIS
6 1 (4.00%) CCDP
6 1 (4.00%) CCSA
6 1 (4.00%) CCSE
System Software
1 3 (12.00%) Docker
1 3 (12.00%) OpenSIPS
1 3 (12.00%) Xen
2 2 (8.00%) Active Directory
2 2 (8.00%) Virtual Servers
3 1 (4.00%) BIND 9
3 1 (4.00%) iptables
3 1 (4.00%) Kamailio
Systems Management
1 4 (16.00%) Nagios
2 3 (12.00%) FortiGate
2 3 (12.00%) HAProxy
3 2 (8.00%) Cacti
3 2 (8.00%) CFEngine
3 2 (8.00%) Opscode Chef
3 2 (8.00%) Puppet
Vendors
1 9 (36.00%) Cisco
1 9 (36.00%) Juniper
2 5 (20.00%) CheckPoint
2 5 (20.00%) SonicWALL
2 5 (20.00%) WatchGuard
3 4 (16.00%) HP
4 3 (12.00%) F5
4 3 (12.00%) Riverbed
4 3 (12.00%) SolarWinds
5 2 (8.00%) Fortinet
5 2 (8.00%) Microsoft
5 2 (8.00%) VMware
6 1 (4.00%) Dell
6 1 (4.00%) Extreme Networks
6 1 (4.00%) Meraki
6 1 (4.00%) Salesforce.com