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 25 June 2017 with a comparison to the same period in the previous 2 years.

Voice Over IP (VoIP)
London / City of London
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 147 170 209
Rank change year-on-year +23 +39  
Permanent jobs citing VoIP 84 91 97
As % of all permanent IT jobs advertised in the City of London 1.63% 1.45% 0.94%
As % of the Communications & Networking category 10.06% 8.78% 6.29%
Number of salaries quoted 69 74 93
Median salary £55,000 £55,000 £46,500
Median salary % change year-on-year - +18.27%  
90% offered a salary of more than £29,000 £31,625 £29,250
10% offered a salary of more than £76,000 £70,000 £69,500
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 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 1036 1542
As % of all permanent IT job vacancies advertised in the City of London 16.22% 16.46% 14.90%
Number of salaries quoted 733 906 1335
Median salary £55,000 £55,000 £54,000
Median salary % change year-on-year - +1.85%  
90% offered a salary of more than £29,000 £33,000 £32,500
10% offered a salary of more than £75,000 £75,000 £70,000
UK excluding London median salary £42,500 £42,500 £42,000
% change year-on-year - +1.19%  

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 25 June 2017.

Salary histogram for VoIP in the City of London

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 City of London region with a requirement for VoIP.

1 80 (51.95%) Windows
2 70 (45.45%) Cisco
3 67 (43.51%) Active Directory
4 63 (40.91%) Microsoft
5 57 (37.01%) VMware
6 55 (35.71%) Firewall
7 50 (32.47%) Windows Server
8 41 (26.62%) Finance
9 39 (25.32%) MS Exchange
10 38 (24.68%) Citrix
11 37 (24.03%) WAN
12 35 (22.73%) VPN
12 35 (22.73%) Telecoms
13 34 (22.08%) TCP/IP
14 33 (21.43%) DNS
14 33 (21.43%) LAN
15 31 (20.13%) ITIL
16 30 (19.48%) Windows Server 2008
17 29 (18.83%) VMware Infrastructure
17 29 (18.83%) Cisco Certification
18 28 (18.18%) Windows Server 2012
19 27 (17.53%) Microsoft Office
20 26 (16.88%) SAN
21 23 (14.94%) SQL Server
21 23 (14.94%) CCNP
22 22 (14.29%) Skype for Business
23 21 (13.64%) SQL
24 20 (12.99%) CCNA
25 19 (12.34%) Microsoft Certification
25 19 (12.34%) Wireless

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 39 (25.32%) MS Exchange
2 22 (14.29%) Skype for Business
3 15 (9.74%) Exchange Server 2010
4 11 (7.14%) SharePoint
5 10 (6.49%) Exchange Server 2013
6 6 (3.90%) Apache
6 6 (3.90%) Exchange Server 2007
6 6 (3.90%) Tomcat
7 5 (3.25%) Blackberry Enterprise Server
7 5 (3.25%) OpenStack
8 4 (2.60%) IIS
9 1 (0.65%) IBM Notes
Applications
1 27 (17.53%) Microsoft Office
2 5 (3.25%) Adobe Illustrator
2 5 (3.25%) InDesign
2 5 (3.25%) Photoshop
3 4 (2.60%) Microsoft Project
4 2 (1.30%) Microsoft Excel
4 2 (1.30%) Microsoft PowerPoint
Cloud Services
1 13 (8.44%) Amazon AWS
2 11 (7.14%) Microsoft Azure
3 7 (4.55%) Amazon EC2
4 6 (3.90%) Amazon ELB
4 6 (3.90%) Amazon S3
4 6 (3.90%) Google Cloud Platform
5 5 (3.25%) Adobe Creative Cloud
5 5 (3.25%) Office 365
6 2 (1.30%) Amazon Kinesis
7 1 (0.65%) IaaS
7 1 (0.65%) Mimecast
7 1 (0.65%) SaaS
Communications & Networking
1 55 (35.71%) Firewall
2 37 (24.03%) WAN
3 35 (22.73%) VPN
4 34 (22.08%) TCP/IP
5 33 (21.43%) DNS
5 33 (21.43%) LAN
6 26 (16.88%) SAN
7 19 (12.34%) Wireless
8 18 (11.69%) DHCP
8 18 (11.69%) MPLS
8 18 (11.69%) Skype
9 16 (10.39%) VLAN
10 15 (9.74%) Unified Communications
11 13 (8.44%) Cisco ASA
11 13 (8.44%) Ethernet
12 12 (7.79%) CTI
13 11 (7.14%) Wi-Fi
14 10 (6.49%) Cisco Nexus
14 10 (6.49%) Internet
15 9 (5.84%) Network Security
Database & Business Intelligence
1 23 (14.94%) SQL Server
2 7 (4.55%) MySQL
3 6 (3.90%) InfluxDB
4 2 (1.30%) Oracle Database
4 2 (1.30%) SQL Server 2012
5 1 (0.65%) SQL Server 2005
5 1 (0.65%) SQL Server 2008
5 1 (0.65%) SQL Server 2014
Development Applications
1 6 (3.90%) Git (software)
1 6 (3.90%) Jenkins
1 6 (3.90%) Maven
1 6 (3.90%) Subversion
2 3 (1.95%) Sonatype Nexus
3 2 (1.30%) JIRA
General
1 41 (26.62%) Finance
2 35 (22.73%) Telecoms
3 6 (3.90%) Banking
4 5 (3.25%) Publishing
5 2 (1.30%) Legal
6 1 (0.65%) Back Office
6 1 (0.65%) Law
6 1 (0.65%) Marketing
Job Titles
1 26 (16.88%) Infrastructure Engineer
1 26 (16.88%) Network Engineer
2 25 (16.23%) Analyst
3 13 (8.44%) Support Analyst
4 12 (7.79%) IT Support
5 11 (7.14%) Administrator
5 11 (7.14%) Senior Network Engineer
6 10 (6.49%) IT Manager
7 8 (5.19%) Infrastructure Specialist
7 8 (5.19%) Service Analyst
7 8 (5.19%) Service Desk Analyst
8 7 (4.55%) Consultant
8 7 (4.55%) Head of IT
8 7 (4.55%) Network Infrastructure Engineer
8 7 (4.55%) Senior Manager
8 7 (4.55%) Support Engineer
8 7 (4.55%) Unified Communications Engineer
9 6 (3.90%) DevOps Engineer
9 6 (3.90%) IT Analyst
9 6 (3.90%) IT Systems Administrator
Libraries, Frameworks & Software Standards
1 9 (5.84%) 802.1X
1 9 (5.84%) LAMP
2 6 (3.90%) Sensu
3 3 (1.95%) FreeSWITCH
4 2 (1.30%) Serverless Framework
5 1 (0.65%) FFmpeg
5 1 (0.65%) XMPP
Miscellaneous
1 19 (12.34%) Data Centre
1 19 (12.34%) IVR
2 16 (10.39%) Analytical Skills
3 10 (6.49%) Computer Science
4 4 (2.60%) Blackberry
4 4 (2.60%) Driving Licence
4 4 (2.60%) Fat Client
4 4 (2.60%) PMI
4 4 (2.60%) Thin Client
5 3 (1.95%) Distributed Denial-of-Service
5 3 (1.95%) iPhone
5 3 (1.95%) PKI
5 3 (1.95%) Replication
5 3 (1.95%) Video Conferencing
6 2 (1.30%) Clustering
6 2 (1.30%) Hedge funds
6 2 (1.30%) iPad
6 2 (1.30%) NHS
7 1 (0.65%) Smartphone
7 1 (0.65%) Streaming Media
Operating Systems
1 80 (51.95%) Windows
2 50 (32.47%) Windows Server
3 30 (19.48%) Windows Server 2008
4 28 (18.18%) Windows Server 2012
5 17 (11.04%) Linux
6 16 (10.39%) Windows 7
7 13 (8.44%) Windows 10
8 9 (5.84%) Windows Server 2003
9 6 (3.90%) Android
9 6 (3.90%) Apple iOS
9 6 (3.90%) VMS
9 6 (3.90%) Windows 8
10 4 (2.60%) Red Hat Enterprise Linux
10 4 (2.60%) Windows XP
11 2 (1.30%) CentOS
12 1 (0.65%) Ubuntu
12 1 (0.65%) Unix
Processes & Methodologies
1 31 (20.13%) ITIL
2 19 (12.34%) Kalman Filter
3 17 (11.04%) Presales
4 14 (9.09%) Disaster Recovery
5 12 (7.79%) High Availability
6 10 (6.49%) Project Management
7 7 (4.55%) Network Monitoring
8 6 (3.90%) Continuous Integration
8 6 (3.90%) Customer Requirements
8 6 (3.90%) DevOps
8 6 (3.90%) Incident Management
8 6 (3.90%) Open Source
8 6 (3.90%) Service Management
8 6 (3.90%) Task Automation
9 5 (3.25%) Business Continuity
9 5 (3.25%) PRINCE2
9 5 (3.25%) Problem Management
10 4 (2.60%) PRINCE
10 4 (2.60%) Risk Management
10 4 (2.60%) Service Delivery
Programming Languages
1 21 (13.64%) SQL
2 9 (5.84%) PowerShell
3 8 (5.19%) Python
4 7 (4.55%) Ruby
5 6 (3.90%) Erlang
5 6 (3.90%) Perl
6 2 (1.30%) Shell Script
7 1 (0.65%) C
7 1 (0.65%) Java
7 1 (0.65%) VB
7 1 (0.65%) VBScript
Qualifications
1 29 (18.83%) Cisco Certification
2 23 (14.94%) CCNP
3 20 (12.99%) CCNA
4 19 (12.34%) Microsoft Certification
5 13 (8.44%) ITIL Certification
6 12 (7.79%) Degree
7 9 (5.84%) MCSE
8 6 (3.90%) MCITP
9 5 (3.25%) EnCE
9 5 (3.25%) JNCIA
10 4 (2.60%) CCNP Voice
10 4 (2.60%) Citrix Certification
10 4 (2.60%) MCSA
10 4 (2.60%) PhD
10 4 (2.60%) PMI Certification
10 4 (2.60%) PRINCE2 Certification
11 3 (1.95%) CCIE
11 3 (1.95%) Computer Science Degree
11 3 (1.95%) VMware Certified Professional (VCP)
12 2 (1.30%) ECIH
Quality Assurance & Compliance
1 9 (5.84%) SLA
2 2 (1.30%) QA
3 1 (0.65%) ISO/IEC 27001
System Software
1 67 (43.51%) Active Directory
2 29 (18.83%) VMware Infrastructure
3 10 (6.49%) vSphere
4 7 (4.55%) Hyper-V
4 7 (4.55%) Virtual Machines
5 6 (3.90%) Docker
6 4 (2.60%) XenServer
7 2 (1.30%) Terminal Services
7 2 (1.30%) VMware ESXi
8 1 (0.65%) Snort
8 1 (0.65%) Xen
8 1 (0.65%) XenApp
Systems Management
1 16 (10.39%) Cisco CUCM
2 9 (5.84%) Backup Exec
2 9 (5.84%) Cacti
3 8 (5.19%) vCenter Server
4 7 (4.55%) Nagios
5 6 (3.90%) AirWatch
5 6 (3.90%) Grafana
5 6 (3.90%) Graphite
5 6 (3.90%) Munin
5 6 (3.90%) Opscode Chef
5 6 (3.90%) Puppet
5 6 (3.90%) Salt
5 6 (3.90%) Terraform
6 5 (3.25%) SCCM
7 4 (2.60%) WSUS
7 4 (2.60%) XenMobile
8 3 (1.95%) FortiGate
8 3 (1.95%) Norton AntiVirus
9 2 (1.30%) McAfee ePO
9 2 (1.30%) Trend Micro Deep Security
Vendors
1 70 (45.45%) Cisco
2 63 (40.91%) Microsoft
3 57 (37.01%) VMware
4 38 (24.68%) Citrix
5 16 (10.39%) Veeam
6 13 (8.44%) Juniper
6 13 (8.44%) Palo Alto
7 12 (7.79%) HP
7 12 (7.79%) NetApp
8 10 (6.49%) Mitel
9 8 (5.19%) Symantec
10 6 (3.90%) Blue Coat
10 6 (3.90%) Google
10 6 (3.90%) Oracle
11 5 (3.25%) Adobe
11 5 (3.25%) Avaya
11 5 (3.25%) Kaspersky
11 5 (3.25%) Red Hat
11 5 (3.25%) SonicWALL
12 4 (2.60%) Apple
City, London
The North Starr
Salary: £70000 - £80000 per annum + 20% commission
Posted: 3 days ago
City, London
Ashdown IT
Salary: £23000 per annum
Posted: 2 days ago
City, London
Senitor Associates
Salary: £37000 - £40000 per annum
Posted: 2 days ago
City, London
ANSON MCCADE
Salary: UKP 85000 per year
Posted: 4 days ago
City, London
ANSON MCCADE
Salary: UKP 60000 per year
Posted: 4 days ago
City, London
ANSON MCCADE
Salary: £70,000 - £85,000 + Car Allowance + Bonus + Benefits
Posted: 4 days ago
City, London
ANSON MCCADE
Salary: £45,000 - £60,000 + Bonus + Benefits
Posted: 4 days ago
City, London
Evolution Recruitment Solutions
Salary: 40,000-60,000
Posted: 6 days ago