Period
to 25 November 2017

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for VoIP skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited VoIP over the 6 months to 25 November 2017 with a comparison to the same period in the previous 2 years.

Voice Over IP (VoIP)
Central London > City of London
6 months to
25 Nov 2017
Same period 2016 Same period 2015
Rank 241 225 262
Rank change year-on-year -16 +37 -26
Permanent jobs citing VoIP 74 132 164
As % of all permanent IT jobs advertised in the City of London 0.73% 1.14% 0.97%
As % of the Communications & Networking category 5.00% 7.45% 6.74%
Number of salaries quoted 69 123 161
City of London median annual salary £47,500 £55,000 £45,000
Median salary % change year-on-year -13.64% +22.22% -
10th Percentile £23,500 £30,000 £27,500
90th Percentile £70,250 £78,750 £73,750
Central London median annual salary £47,500 £50,000 £42,500
% change year-on-year -5.00% +17.65% -

VoIP is in the Communications and Computer Networking category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for communications or computer networking skills.

All Communications and Computer Networking Skills
City of London
Permanent vacancies with a requirement for communications or computer networking skills 1481 1773 2433
As % of all permanent IT jobs advertised in the City of London 14.57% 15.27% 14.33%
Number of salaries quoted 1329 1557 2091
City of London median annual salary £52,500 £55,000 £52,500
Median salary % change year-on-year -4.55% +4.76% +7.14%
10th Percentile £31,250 £30,750 £27,500
90th Percentile £80,000 £78,750 £80,000
Central London median annual salary £52,500 £52,500 £50,000
% change year-on-year - +5.00% +2.04%

VoIP
Job Vacancy Trend in the City of London

Job postings citing VoIP as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for VoIP in the City of London

VoIP
Salary Trend in the City of London

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

Salary trend for VoIP in the City of London

VoIP
Salary Histogram in the City of London

The salary distribution of IT jobs citing VoIP in the City of London over the 6 months to 25 November 2017.

Salary histogram for VoIP in the City of London

For the 6 months to 25 November 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 City of London region with a requirement for VoIP.

1 45 (60.81%) Active Directory
2 38 (51.35%) Windows
3 31 (41.89%) Cisco
3 31 (41.89%) Office 365
4 29 (39.19%) Microsoft
5 28 (37.84%) MS Exchange
6 25 (33.78%) VMware
7 24 (32.43%) Firewall
7 24 (32.43%) LAN
7 24 (32.43%) WAN
8 22 (29.73%) Windows Server
9 21 (28.38%) Microsoft Office
9 21 (28.38%) ITIL
10 19 (25.68%) Citrix
10 19 (25.68%) Microsoft Azure
10 19 (25.68%) Windows 10
11 17 (22.97%) Skype for Business
11 17 (22.97%) Skype
12 16 (21.62%) Exchange Server 2010
13 15 (20.27%) Unified Communications
13 15 (20.27%) VLAN
14 14 (18.92%) Finance
14 14 (18.92%) ITIL V3
14 14 (18.92%) Windows 7
14 14 (18.92%) Windows Server 2008
15 13 (17.57%) Amazon AWS
15 13 (17.57%) Wi-Fi
15 13 (17.57%) Wireless
15 13 (17.57%) Presales
16 12 (16.22%) TCP/IP

VoIP
Co-occurring IT Skills in the City of 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 28 (37.84%) MS Exchange
2 17 (22.97%) Skype for Business
3 16 (21.62%) Exchange Server 2010
4 8 (10.81%) SharePoint
5 2 (2.70%) Exchange Server 2013
6 1 (1.35%) Apache
6 1 (1.35%) Blackberry Enterprise Server
6 1 (1.35%) Exchange Server 2003
6 1 (1.35%) Exchange Server 2007
6 1 (1.35%) IIS
6 1 (1.35%) Tomcat
Applications
1 21 (28.38%) Microsoft Office
2 4 (5.41%) Microsoft Project
3 1 (1.35%) Microsoft Excel
Cloud Services
1 31 (41.89%) Office 365
2 19 (25.68%) Microsoft Azure
3 13 (17.57%) Amazon AWS
4 6 (8.11%) Mimecast
5 2 (2.70%) IaaS
5 2 (2.70%) SaaS
6 1 (1.35%) Amazon EC2
6 1 (1.35%) Amazon ELB
6 1 (1.35%) Amazon S3
6 1 (1.35%) G Suite
Communications & Networking
1 24 (32.43%) Firewall
1 24 (32.43%) LAN
1 24 (32.43%) WAN
2 17 (22.97%) Skype
3 15 (20.27%) Unified Communications
3 15 (20.27%) VLAN
4 13 (17.57%) Wi-Fi
4 13 (17.57%) Wireless
5 12 (16.22%) TCP/IP
6 11 (14.86%) SAN
7 8 (10.81%) DHCP
7 8 (10.81%) DNS
8 6 (8.11%) VPN
9 5 (6.76%) BGP
9 5 (6.76%) Cisco IOS
9 5 (6.76%) OSPF
10 4 (5.41%) Cisco Nexus
10 4 (5.41%) DMVPN
10 4 (5.41%) HSRP
10 4 (5.41%) Network Security
Database & Business Intelligence
1 10 (13.51%) SQL Server
2 6 (8.11%) SQL Server 2008
2 6 (8.11%) SQL Server 2012
3 2 (2.70%) MySQL
4 1 (1.35%) InfluxDB
Development Applications
1 1 (1.35%) Git (software)
1 1 (1.35%) Jenkins
1 1 (1.35%) Maven
1 1 (1.35%) Subversion
General
1 14 (18.92%) Finance
2 8 (10.81%) Telecoms
3 5 (6.76%) Law
4 1 (1.35%) Advertising
4 1 (1.35%) Back Office
4 1 (1.35%) Banking
4 1 (1.35%) Legal
Job Titles
1 18 (24.32%) Infrastructure Engineer
2 15 (20.27%) Analyst
3 10 (13.51%) IT Support
3 10 (13.51%) Support Analyst
3 10 (13.51%) Support Engineer
4 9 (12.16%) IT Analyst
4 9 (12.16%) IT Support Analyst
5 6 (8.11%) Network Engineer
5 6 (8.11%) Server Engineer
6 5 (6.76%) Wintel Analyst
7 4 (5.41%) IT Support Technician
7 4 (5.41%) IT Technician
7 4 (5.41%) Network Infrastructure Engineer
7 4 (5.41%) Network Manager
7 4 (5.41%) Presales Engineer
7 4 (5.41%) Project Manager
7 4 (5.41%) Support Technician
7 4 (5.41%) Wintel Support
7 4 (5.41%) Wintel Support Analyst
8 3 (4.05%) Team Leader
Libraries, Frameworks & Software Standards
1 4 (5.41%) XMPP
2 1 (1.35%) .NET
2 1 (1.35%) FreeSWITCH
2 1 (1.35%) LAMP
2 1 (1.35%) Sensu
Miscellaneous
1 8 (10.81%) Public Cloud
2 7 (9.46%) Data Centre
3 4 (5.41%) Computer Science
3 4 (5.41%) PMI
3 4 (5.41%) Video Conferencing
4 3 (4.05%) Analytical Skills
4 3 (4.05%) Driving Licence
5 2 (2.70%) Distributed Denial-of-Service
6 1 (1.35%) Blackberry
6 1 (1.35%) CCTV
6 1 (1.35%) iPad
6 1 (1.35%) iPhone
6 1 (1.35%) IVR
6 1 (1.35%) Management Information System
Operating Systems
1 38 (51.35%) Windows
2 22 (29.73%) Windows Server
3 19 (25.68%) Windows 10
4 14 (18.92%) Windows 7
4 14 (18.92%) Windows Server 2008
5 7 (9.46%) Windows Server 2012
6 6 (8.11%) Windows 8
7 5 (6.76%) Linux
8 2 (2.70%) Mac OS X
8 2 (2.70%) Unix
8 2 (2.70%) Windows Server 2003
9 1 (1.35%) Mac OS
9 1 (1.35%) Ubuntu
9 1 (1.35%) VMS
9 1 (1.35%) Windows XP
Processes & Methodologies
1 21 (28.38%) ITIL
2 14 (18.92%) ITIL V3
3 13 (17.57%) Presales
4 10 (13.51%) Customer Requirements
5 9 (12.16%) PRINCE2
5 9 (12.16%) Service Management
6 8 (10.81%) Project Management
6 8 (10.81%) Service Design
7 6 (8.11%) Kalman Filter
8 5 (6.76%) Migration
8 5 (6.76%) Network Monitoring
9 4 (5.41%) CRM
9 4 (5.41%) Document Management
9 4 (5.41%) Facilities Management
9 4 (5.41%) Network Virtualisation
9 4 (5.41%) PRINCE
9 4 (5.41%) Problem Management
9 4 (5.41%) Risk Management
9 4 (5.41%) WAN Optimisation
10 3 (4.05%) Proactive Monitoring
Programming Languages
1 4 (5.41%) SQL
2 3 (4.05%) PowerShell
3 1 (1.35%) C
3 1 (1.35%) Erlang
3 1 (1.35%) Perl
3 1 (1.35%) Python
3 1 (1.35%) Ruby
3 1 (1.35%) VB
3 1 (1.35%) VB.NET
3 1 (1.35%) VB6
3 1 (1.35%) VBA
Qualifications
1 9 (12.16%) Cisco Certification
2 6 (8.11%) CCNA
2 6 (8.11%) VMware Certified Professional (VCP)
3 4 (5.41%) Microsoft Certification
3 4 (5.41%) PMI Certification
3 4 (5.41%) PRINCE2 Certification
4 3 (4.05%) CCNP
4 3 (4.05%) CEH
4 3 (4.05%) CISA
4 3 (4.05%) CISM
4 3 (4.05%) CISSP
4 3 (4.05%) Degree
4 3 (4.05%) ECIH
4 3 (4.05%) MCSE
4 3 (4.05%) PRINCE2 Practitioner
5 2 (2.70%) CCIE
5 2 (2.70%) MCITP
6 1 (1.35%) CCIE Routing and Switching
6 1 (1.35%) Computer Science Degree
6 1 (1.35%) MCDST
Quality Assurance & Compliance
1 8 (10.81%) SLA
2 2 (2.70%) ISO/IEC 27001
3 1 (1.35%) COBIT
3 1 (1.35%) MiFID
3 1 (1.35%) Sarbanes-Oxley
3 1 (1.35%) Solvency II
System Software
1 45 (60.81%) Active Directory
2 12 (16.22%) VMware Infrastructure
3 10 (13.51%) XenApp
4 8 (10.81%) Hyper-V
5 6 (8.11%) Microsoft App-V
6 1 (1.35%) Docker
6 1 (1.35%) iptables
6 1 (1.35%) Virtual Machines
6 1 (1.35%) vSphere
Systems Management
1 9 (12.16%) SCCM
2 5 (6.76%) Cisco CUCM
2 5 (6.76%) Nagios
3 3 (4.05%) AirWatch
4 2 (2.70%) SCOM
5 1 (1.35%) Backup Exec
5 1 (1.35%) Cacti
5 1 (1.35%) FortiGate
5 1 (1.35%) Grafana
5 1 (1.35%) Graphite
5 1 (1.35%) Munin
5 1 (1.35%) Norton AntiVirus
5 1 (1.35%) Opscode Chef
5 1 (1.35%) Puppet
5 1 (1.35%) Salt
5 1 (1.35%) Terraform
Vendors
1 31 (41.89%) Cisco
2 29 (39.19%) Microsoft
3 25 (33.78%) VMware
4 19 (25.68%) Citrix
5 10 (13.51%) Apple
6 7 (9.46%) Dell
7 6 (8.11%) Dell Compellent
7 6 (8.11%) Mitel
8 5 (6.76%) Juniper
8 5 (6.76%) McAfee
8 5 (6.76%) Palo Alto
9 4 (5.41%) MobileIron
9 4 (5.41%) Riverbed
9 4 (5.41%) SolarWinds
9 4 (5.41%) Veeam
10 3 (4.05%) Barracuda Networks
10 3 (4.05%) ForeScout
10 3 (4.05%) HP
10 3 (4.05%) Meraki
10 3 (4.05%) Qualys