VoIP Jobs in the City of London

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
Location	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

VoIP
Top 30 Co-occurring IT Skills 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
Applications
Cloud Services
Communications & Networking
Database & Business Intelligence
Development Applications
General
Job Titles
Libraries, Frameworks & Software Standards
Miscellaneous
Operating Systems
Processes & Methodologies
Programming Languages
Qualifications
Quality Assurance & Compliance
System Software
Systems Management
Vendors

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