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 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
Voice Over IP (VoIP)
London / City of London
Rank 151 188 147
Rank change year-on-year +37 -41  
Permanent jobs citing VoIP 69 82 190
As % of all permanent IT jobs advertised in the City of London 1.38% 1.17% 1.88%
As % of the Communications & Networking category 8.26% 7.98% 9.45%
Number of salaries quoted 63 70 179
Median salary £45,000 £45,500 £50,000
Median salary % change year-on-year -1.09% -9.00%  
90% offered a salary of more than £27,500 £28,000 £33,900
10% offered a salary of more than £75,000 £63,500 £70,000
UK excluding London median salary £37,500 £40,000 £36,750
% change year-on-year -6.25% +8.84%  

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 the City of London with a requirement for communications and computer networking skills.

Communications & Computer Network Skills
City of London
Permanent job vacancies with a requirement for communications and computer networking skills 835 1027 2011
As % of all permanent IT job vacancies advertised in the City of London 16.67% 14.61% 19.88%
Number of salaries quoted 788 901 1682
Median salary £47,500 £52,500 £55,000
Median salary % change year-on-year -9.52% -4.54%  
90% offered a salary of more than £26,000 £32,500 £34,000
10% offered a salary of more than £75,000 £70,000 £80,000
UK excluding London median salary £40,000 £42,500 £41,000
% change year-on-year -5.88% +3.65%  

VoIP
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London 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 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 3 months to 23 March 2017.

Salary histogram for VoIP in the City of London

VoIP
Top 30 Related IT Skills in the City of London

For the 6 months to 23 March 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 68 (53.13%) Windows
2 63 (49.22%) Active Directory
3 62 (48.44%) Cisco
4 56 (43.75%) Firewall
5 55 (42.97%) Microsoft
6 49 (38.28%) VMware
7 42 (32.81%) Windows Server
8 34 (26.56%) VPN
9 31 (24.22%) Citrix
9 31 (24.22%) VMware Infrastructure
10 30 (23.44%) MS Exchange
10 30 (23.44%) WAN
11 28 (21.88%) DNS
11 28 (21.88%) Analytical Skills
12 27 (21.09%) LAN
13 25 (19.53%) MS Office
14 24 (18.75%) SAN
15 23 (17.97%) Cisco Certification
15 23 (17.97%) Finance
16 21 (16.41%) ITIL
16 21 (16.41%) TCP/IP
17 20 (15.63%) MS Excel
18 19 (14.84%) Windows 10
18 19 (14.84%) SQL Server
18 19 (14.84%) DHCP
18 19 (14.84%) Telecoms
19 18 (14.06%) Disaster Recovery
20 17 (13.28%) Wireless
20 17 (13.28%) CCNP
20 17 (13.28%) Windows Server 2003

VoIP
Top Related 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 30 (23.44%) MS Exchange
2 13 (10.16%) Skype for Business
3 10 (7.81%) Exchange Server 2007
3 10 (7.81%) Exchange Server 2013
4 7 (5.47%) IIS
5 4 (3.13%) OpenStack
6 3 (2.34%) Exchange Server 2010
6 3 (2.34%) SharePoint
7 2 (1.56%) SharePoint Server
8 1 (0.78%) Apache
8 1 (0.78%) Blackberry Enterprise Server
8 1 (0.78%) CMS
Applications
1 25 (19.53%) MS Office
2 20 (15.63%) MS Excel
3 1 (0.78%) 3ds Max
3 1 (0.78%) AutoCAD
3 1 (0.78%) MS Visio
3 1 (0.78%) Revit
Cloud Services
1 10 (7.81%) Amazon AWS
2 9 (7.03%) Office 365
3 5 (3.91%) Google Cloud Platform
3 5 (3.91%) Microsoft Azure
4 4 (3.13%) IBM Cloud
5 3 (2.34%) SaaS
6 2 (1.56%) Mimecast
7 1 (0.78%) AdWords
7 1 (0.78%) Amazon EC2
7 1 (0.78%) Google Analytics
Communications & Networking
1 56 (43.75%) Firewall
2 34 (26.56%) VPN
3 30 (23.44%) WAN
4 28 (21.88%) DNS
5 27 (21.09%) LAN
6 24 (18.75%) SAN
7 21 (16.41%) TCP/IP
8 19 (14.84%) DHCP
9 17 (13.28%) Wireless
10 16 (12.50%) Cisco ASA
11 15 (11.72%) MPLS
11 15 (11.72%) Unified Communications
12 14 (10.94%) DSL
12 14 (10.94%) Ethernet
13 11 (8.59%) Wi-Fi
14 10 (7.81%) ADSL
15 9 (7.03%) BGP
15 9 (7.03%) CTI
15 9 (7.03%) VLAN
16 7 (5.47%) Cisco Nexus
Database & Business Intelligence
1 19 (14.84%) SQL Server
2 2 (1.56%) Oracle Database
3 1 (0.78%) SQL Server 2005
3 1 (0.78%) SQL Server 2012
Development Applications
1 2 (1.56%) JIRA
General
1 23 (17.97%) Finance
2 19 (14.84%) Telecoms
3 8 (6.25%) Marketing
4 5 (3.91%) Retail
4 5 (3.91%) Turkish Language
5 4 (3.13%) Banking
6 1 (0.78%) Law
6 1 (0.78%) Legal
Job Titles
1 22 (17.19%) Infrastructure Engineer
2 20 (15.63%) IT Support
3 18 (14.06%) Support Engineer
4 16 (12.50%) Network Engineer
5 13 (10.16%) Analyst
6 12 (9.38%) IT Engineer
6 12 (9.38%) IT Support Engineer
7 10 (7.81%) Head of IT
7 10 (7.81%) Infrastructure Specialist
8 8 (6.25%) Administrator
8 8 (6.25%) Head of IT Operations
8 8 (6.25%) Head of Operations
9 7 (5.47%) IT Manager
9 7 (5.47%) Systems Administrator
9 7 (5.47%) VMware Specialist
10 6 (4.69%) Desktop Engineer
10 6 (4.69%) Senior Network Engineer
10 6 (4.69%) Service Analyst
10 6 (4.69%) Service Desk Analyst
11 5 (3.91%) Infrastructure Manager
Libraries, Frameworks & Software Standards
1 4 (3.13%) 802.1X
2 1 (0.78%) LAMP
2 1 (0.78%) XMPP
Miscellaneous
1 28 (21.88%) Analytical Skills
2 14 (10.94%) IVR
3 10 (7.81%) Driving Licence
4 9 (7.03%) Data Centre
5 7 (5.47%) Computer Science
6 6 (4.69%) Video Conferencing
7 5 (3.91%) Blackberry
7 5 (3.91%) PKI
8 4 (3.13%) Fat Client
8 4 (3.13%) iPhone
8 4 (3.13%) Thin Client
9 3 (2.34%) Clustering
10 2 (1.56%) Hedge funds
10 2 (1.56%) Internet of Things
10 2 (1.56%) Management Information System
10 2 (1.56%) Smartphone
10 2 (1.56%) Social Media
10 2 (1.56%) User Experience
11 1 (0.78%) Enterprise Cloud
11 1 (0.78%) Mobile App
Operating Systems
1 68 (53.13%) Windows
2 42 (32.81%) Windows Server
3 19 (14.84%) Windows 10
4 17 (13.28%) Windows Server 2003
5 14 (10.94%) Linux
5 14 (10.94%) Windows XP
6 11 (8.59%) Windows Server 2008
6 11 (8.59%) Windows Server 2012
7 8 (6.25%) Windows 7
8 3 (2.34%) Ubuntu
8 3 (2.34%) Windows 8
9 2 (1.56%) Android
9 2 (1.56%) Mac OS X
9 2 (1.56%) Red Hat Enterprise Linux
10 1 (0.78%) Apple iOS
10 1 (0.78%) CentOS
10 1 (0.78%) Unix
Processes & Methodologies
1 21 (16.41%) ITIL
2 18 (14.06%) Disaster Recovery
3 13 (10.16%) High Availability
4 11 (8.59%) Presales
5 9 (7.03%) Project Management
6 8 (6.25%) Problem Management
7 7 (5.47%) Kalman Filter
8 6 (4.69%) Business Continuity
9 5 (3.91%) Service Delivery
9 5 (3.91%) Software Testing
10 4 (3.13%) IT Strategy
10 4 (3.13%) Network Segmentation
10 4 (3.13%) Penetration Testing
10 4 (3.13%) Service Management
10 4 (3.13%) Time Management
11 3 (2.34%) Asset Management
11 3 (2.34%) Capacity Planning
11 3 (2.34%) Incident Management
11 3 (2.34%) Investment Management
11 3 (2.34%) Mentoring
Programming Languages
1 12 (9.38%) SQL
2 4 (3.13%) PowerShell
3 2 (1.56%) Bash Shell
3 2 (1.56%) Python
4 1 (0.78%) Shell Script
4 1 (0.78%) VB
4 1 (0.78%) VBScript
Qualifications
1 23 (17.97%) Cisco Certification
2 17 (13.28%) CCNP
3 14 (10.94%) CCNA
4 13 (10.16%) Microsoft Certification
5 10 (7.81%) Degree
5 10 (7.81%) PhD
6 9 (7.03%) ITIL Certification
7 7 (5.47%) MCSE
8 5 (3.91%) MCDST
9 4 (3.13%) JNCIA
9 4 (3.13%) MCP
10 2 (1.56%) CCIE
10 2 (1.56%) MCSA
11 1 (0.78%) CCENT
11 1 (0.78%) CCSA
11 1 (0.78%) CCVP
11 1 (0.78%) Microsoft Certified Architect
11 1 (0.78%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 10 (7.81%) SLA
2 3 (2.34%) ISO/IEC 27001
3 2 (1.56%) QA
System Software
1 63 (49.22%) Active Directory
2 31 (24.22%) VMware Infrastructure
3 10 (7.81%) XenServer
4 7 (5.47%) Hyper-V
5 4 (3.13%) Virtual Servers
5 4 (3.13%) VMware ESX
6 3 (2.34%) vSphere
7 2 (1.56%) VMware ESXi
8 1 (0.78%) Terminal Services
8 1 (0.78%) XenApp
Systems Management
1 11 (8.59%) Cisco CUCM
2 10 (7.81%) Backup Exec
2 10 (7.81%) XenMobile
3 5 (3.91%) FortiGate
4 4 (3.13%) BMC PATROL
4 4 (3.13%) Cisco UCCX
4 4 (3.13%) WSUS
5 1 (0.78%) Failover Clustering
5 1 (0.78%) Microsoft Clustering
Vendors
1 62 (48.44%) Cisco
2 55 (42.97%) Microsoft
3 49 (38.28%) VMware
4 31 (24.22%) Citrix
5 17 (13.28%) Palo Alto
6 14 (10.94%) HP
7 12 (9.38%) Mitel
8 11 (8.59%) Polycom
8 11 (8.59%) Veeam
9 10 (7.81%) EMC
9 10 (7.81%) IronPort
9 10 (7.81%) Juniper
9 10 (7.81%) NetApp
10 7 (5.47%) Avaya
11 6 (4.69%) Google
11 6 (4.69%) Oracle
12 4 (3.13%) BMC
12 4 (3.13%) Dell
12 4 (3.13%) LANDesk
13 3 (2.34%) CheckPoint
City, London
TJ Peel
Salary: From £60,000 to £80,000 per annum
Posted: Yesterday
City, London
Reed Technology
Salary: £27000 - £31000 per annum + Attractive Benefits
Posted: Yesterday
City, London
Harrington Starr
Salary: £50000 - £60000 per annum
Posted: 5 days ago
City, London
Statesman Travel Limited
Salary: Up to £35,000 per annum
Posted: 14 days ago
City, London
Praemium
Salary: From £45 to £50 per annum plus 9% non-contributory pension
Posted: 21 days ago