Period
to 25 September 2021

The following table provides summary statistics for permanent job vacancies advertised in 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 September 2021 with a comparison to the same period in the previous 2 years.

Voice Over IP (VoIP)
England > London
6 months to
25 Sep 2021
Same period 2020 Same period 2019
Rank 513 321 365
Rank change year-on-year -192 +44 +66
Permanent jobs citing VoIP 201 163 466
As % of all permanent jobs advertised in London 0.41% 0.81% 0.84%
As % of the Communications & Networking category 3.54% 5.93% 6.48%
Number of salaries quoted 174 151 400
10th Percentile £30,325 £36,250 £25,000
25th Percentile £37,000 £42,500 £29,750
Median annual salary (50th Percentile) £52,500 £50,000 £37,500
Median % change year-on-year +5.00% +33.33% -21.05%
75th Percentile £70,000 £62,500 £55,750
90th Percentile £85,000 £77,500 £69,775
England median annual salary £42,500 £46,000 £37,500
% change year-on-year -7.61% +22.67% -1.32%

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 London with a requirement for communications or computer networking skills.

All Communications and Computer Networking Skills
London
Permanent vacancies with a requirement for communications or computer networking skills 5,679 2,747 7,189
As % of all permanent IT jobs advertised in London 11.58% 13.67% 12.88%
Number of salaries quoted 3,717 2,286 5,891
10th Percentile £33,000 £36,250 £28,750
25th Percentile £46,250 £47,500 £37,500
Median annual salary (50th Percentile) £62,500 £65,000 £55,000
Median % change year-on-year -3.85% +18.18% -
75th Percentile £80,000 £80,000 £75,000
90th Percentile £95,000 £95,375 £87,500
England median annual salary £50,000 £52,500 £46,000
% change year-on-year -4.76% +14.13% -3.16%

VoIP
Job Vacancy Trend in London

Job postings citing VoIP as a proportion of all IT jobs advertised in London.

Job vacancy trend for VoIP in London

VoIP
Salary Trend in London

3-month moving average salary quoted in jobs citing VoIP in London.

Salary trend for VoIP in London

VoIP
Salary Histogram in London

Salary distribution for jobs citing VoIP in London over the 6 months to 25 September 2021.

Salary histogram for VoIP in London

VoIP
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing VoIP within the London region over the 6 months to 25 September 2021. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London -63 24 £57,500 +15.00% 14
West London -64 12 £37,500 -18.48% 13
South London -23 6 £70,000 +61.74% 2
East London -18 4 £32,163 -19.59% 3
VoIP
England

For the 6 months to 25 September 2021, IT jobs citing VoIP also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the London region with a requirement for VoIP.

1 96 (47.76%) Firewall
2 90 (44.78%) Windows
3 87 (43.28%) Microsoft 365
4 83 (41.29%) Cisco
4 83 (41.29%) Microsoft
5 68 (33.83%) Active Directory
6 66 (32.84%) LAN
6 66 (32.84%) Azure
7 63 (31.34%) VPN
8 60 (29.85%) WAN
9 57 (28.36%) Social Skills
10 48 (23.88%) Degree
11 46 (22.89%) Windows Server
12 45 (22.39%) DNS
13 43 (21.39%) Telecoms
14 42 (20.90%) Wi-Fi
15 39 (19.40%) PowerShell
16 38 (18.91%) Cisco Certification
17 35 (17.41%) DHCP
18 32 (15.92%) Linux
18 32 (15.92%) ITIL
18 32 (15.92%) Data Centre
19 30 (14.93%) TCP/IP
20 29 (14.43%) MPLS
21 28 (13.93%) BGP
21 28 (13.93%) Juniper
21 28 (13.93%) Python
22 27 (13.43%) Infrastructure Engineering
23 26 (12.94%) Microsoft Office
23 26 (12.94%) Mitel

VoIP
Co-occurring IT Skills in 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 14 (6.97%) IIS
2 11 (5.47%) SharePoint
3 10 (4.98%) MS Exchange
3 10 (4.98%) Tomcat
4 6 (2.99%) Exchange Server 2013
4 6 (2.99%) SAS
5 5 (2.49%) Apache
6 4 (1.99%) CMS
6 4 (1.99%) nginx
7 3 (1.49%) Skype for Business
8 2 (1.00%) Confluence
9 1 (0.50%) Oracle SOA Suite
9 1 (0.50%) SharePoint 2010
Applications
1 26 (12.94%) Microsoft Office
2 6 (2.99%) Microsoft Excel
3 2 (1.00%) Microsoft PowerPoint
Business Applications
1 6 (2.99%) Unica
2 4 (1.99%) FastStats
3 3 (1.49%) Exchequer
3 3 (1.49%) Magento
3 3 (1.49%) Sage 300 ERP
3 3 (1.49%) Sage CRM
4 1 (0.50%) Oracle Receivables
4 1 (0.50%) Salesforce.com CRM
Cloud Services
1 87 (43.28%) Microsoft 365
2 66 (32.84%) Azure
3 24 (11.94%) AWS
4 15 (7.46%) Azure Active Directory
4 15 (7.46%) Mimecast
5 10 (4.98%) Cloudflare
5 10 (4.98%) SaaS
6 8 (3.98%) Azure Storage
6 8 (3.98%) Google Workspace
7 7 (3.48%) WhatsApp
8 6 (2.99%) PaaS
9 5 (2.49%) IaaS
10 3 (1.49%) Adobe Creative Cloud
10 3 (1.49%) Amazon S3
10 3 (1.49%) GCP
10 3 (1.49%) Route 53
11 2 (1.00%) OneDrive
12 1 (0.50%) Azure ExpressRoute
12 1 (0.50%) GitHub
12 1 (0.50%) Serverless
Communications & Networking
1 96 (47.76%) Firewall
2 66 (32.84%) LAN
3 63 (31.34%) VPN
4 60 (29.85%) WAN
5 45 (22.39%) DNS
6 42 (20.90%) Wi-Fi
7 35 (17.41%) DHCP
8 30 (14.93%) TCP/IP
9 29 (14.43%) MPLS
10 28 (13.93%) BGP
11 24 (11.94%) OSPF
12 22 (10.95%) SSL
13 21 (10.45%) SAN
14 20 (9.95%) VLAN
15 19 (9.45%) Asterisk PBX
15 19 (9.45%) Unified Communications
16 16 (7.96%) Broadband
16 16 (7.96%) SNMP
17 15 (7.46%) H.323
18 14 (6.97%) Internet
Database & Business Intelligence
1 22 (10.95%) SQL Server
2 4 (1.99%) SQL Server 2012
3 3 (1.49%) Crystal Reports
3 3 (1.49%) Data Vault
3 3 (1.49%) MS Access
3 3 (1.49%) SQLite
4 2 (1.00%) MySQL
4 2 (1.00%) SQL Server 2016
5 1 (0.50%) Azure SQL Database
5 1 (0.50%) SQL Server 2008
5 1 (0.50%) SQL Server Reporting Services
Development Applications
1 16 (7.96%) JIRA
2 7 (3.48%) GDB
2 7 (3.48%) Git (software)
2 7 (3.48%) Valgrind
3 1 (0.50%) Gerrit
3 1 (0.50%) Jenkins
3 1 (0.50%) Sonatype Nexus
3 1 (0.50%) Subversion
3 1 (0.50%) Visual Studio
General
1 57 (28.36%) Social Skills
2 43 (21.39%) Telecoms
3 20 (9.95%) Finance
4 16 (7.96%) Law
5 15 (7.46%) Analytical Skills
6 14 (6.97%) Marketing
7 11 (5.47%) Organisational Skills
8 5 (2.49%) Manufacturing
9 4 (1.99%) Legal
9 4 (1.99%) Retail
10 3 (1.49%) Inclusion and Diversity
10 3 (1.49%) Publishing
11 2 (1.00%) Banking
11 2 (1.00%) Games
11 2 (1.00%) Presentation Skills
12 1 (0.50%) Advertising
12 1 (0.50%) Documentation Skills
12 1 (0.50%) Fire and Rescue
12 1 (0.50%) Military
12 1 (0.50%) Public Sector
Job Titles
1 45 (22.39%) Network Engineer
2 17 (8.46%) Administrator
3 14 (6.97%) Analyst
3 14 (6.97%) Cisco Engineer
3 14 (6.97%) IT Support
3 14 (6.97%) Support Engineer
3 14 (6.97%) Systems Administrator
3 14 (6.97%) VoIP Engineer
4 13 (6.47%) Developer
4 13 (6.47%) Infrastructure Engineer
5 12 (5.97%) Infrastructure Manager
5 12 (5.97%) IT Manager
6 11 (5.47%) Principal Engineer
6 11 (5.47%) Principal Network Engineer
6 11 (5.47%) Support Analyst
7 10 (4.98%) Azure Administrator
7 10 (4.98%) IT Engineer
8 9 (4.48%) Unified Communications Engineer
9 8 (3.98%) IT Support Analyst
9 8 (3.98%) Storage Systems Administrator
Libraries, Frameworks & Software Standards
1 15 (7.46%) WebRTC
2 12 (5.97%) FreeSWITCH
3 8 (3.98%) 802.1X
4 7 (3.48%) Node.js
5 4 (1.99%) LDAP
5 4 (1.99%) XMPP
6 3 (1.49%) CSS
6 3 (1.49%) HTML
6 3 (1.49%) OAuth
7 2 (1.00%) GraphQL
7 2 (1.00%) LAMP
8 1 (0.50%) Apollo GraphQL
8 1 (0.50%) React
8 1 (0.50%) Web Services
Miscellaneous
1 32 (15.92%) Data Centre
2 20 (9.95%) Video Conferencing
3 10 (4.98%) Management Information System
4 7 (3.48%) Driving Licence
5 6 (2.99%) Smartphone
6 5 (2.49%) iPhone
6 5 (2.49%) Self-Motivation
6 5 (2.49%) User Experience
7 4 (1.99%) Digital Signage
7 4 (1.99%) EFT
7 4 (1.99%) Enterprise Cloud
7 4 (1.99%) IPTV
7 4 (1.99%) Mobile App
7 4 (1.99%) Public Cloud
8 3 (1.49%) Client/Server
8 3 (1.49%) Virtual Team
9 2 (1.00%) Cloud Native
9 2 (1.00%) EPoS
9 2 (1.00%) NHS
9 2 (1.00%) Thin Client
Operating Systems
1 90 (44.78%) Windows
2 46 (22.89%) Windows Server
3 32 (15.92%) Linux
4 18 (8.96%) Windows Server 2012
4 18 (8.96%) Windows Server 2016
5 17 (8.46%) Windows 10
6 12 (5.97%) Apple iOS
7 10 (4.98%) Mac OS
8 9 (4.48%) CentOS
8 9 (4.48%) Windows Server 2019
9 7 (3.48%) Android
10 6 (2.99%) VMS
10 6 (2.99%) Windows 7
11 5 (2.49%) Mac OS X
11 5 (2.49%) Windows Server 2008
12 4 (1.99%) Debian
13 3 (1.49%) Windows Server 2003
14 2 (1.00%) Unix
15 1 (0.50%) Embedded Linux
Processes & Methodologies
1 32 (15.92%) ITIL
2 27 (13.43%) Infrastructure Engineering
3 22 (10.95%) Computer Science
4 19 (9.45%) Service Delivery
5 17 (8.46%) Network Monitoring
6 15 (7.46%) Agile Software Development
6 15 (7.46%) Disaster Recovery
6 15 (7.46%) Migration
6 15 (7.46%) Procure-to-Pay
7 14 (6.97%) Change Management
8 13 (6.47%) Cost Reduction
9 12 (5.97%) ITSM
9 12 (5.97%) Network Design
10 11 (5.47%) Problem-Solving
10 11 (5.47%) Software Engineering
11 10 (4.98%) Business Continuity
11 10 (4.98%) CRM
12 9 (4.48%) DevOps
12 9 (4.48%) High Availability
12 9 (4.48%) Workflow
Programming Languages
1 39 (19.40%) PowerShell
2 28 (13.93%) Python
3 24 (11.94%) SQL
4 16 (7.96%) Bash Shell
5 12 (5.97%) C
6 9 (4.48%) Go
7 6 (2.99%) R
7 6 (2.99%) T-SQL
8 5 (2.49%) Apple Swift
8 5 (2.49%) VB
9 4 (1.99%) JavaScript
9 4 (1.99%) Objective-C
9 4 (1.99%) PHP
10 3 (1.49%) C++
11 2 (1.00%) Kotlin
11 2 (1.00%) Perl
11 2 (1.00%) TypeScript
12 1 (0.50%) Java
Qualifications
1 48 (23.88%) Degree
2 38 (18.91%) Cisco Certification
3 24 (11.94%) CCNA
4 23 (11.44%) CCNP
5 20 (9.95%) Computer Science Degree
6 12 (5.97%) CCIE
7 9 (4.48%) CCENT
7 9 (4.48%) JNCIA
7 9 (4.48%) Security Cleared
8 8 (3.98%) DV Cleared
8 8 (3.98%) SC Cleared
9 5 (2.49%) ITIL Certification
10 4 (1.99%) ITIL Foundation Certificate
10 4 (1.99%) Microsoft Certification
11 2 (1.00%) CCA
11 2 (1.00%) Citrix Certification
11 2 (1.00%) MCP
11 2 (1.00%) MCSA
11 2 (1.00%) MCSE
12 1 (0.50%) A+ Certification
Quality Assurance & Compliance
1 16 (7.96%) SLA
2 7 (3.48%) GDPR
3 6 (2.99%) ISO/IEC 27001
4 1 (0.50%) HIPAA
4 1 (0.50%) QA
4 1 (0.50%) SOC 2
System Software
1 68 (33.83%) Active Directory
2 26 (12.94%) Hyper-V
3 12 (5.97%) VMware Infrastructure
4 7 (3.48%) vSphere
5 6 (2.99%) OpenSIPS
6 5 (2.49%) Kamailio
6 5 (2.49%) Terminal Services
6 5 (2.49%) XenDesktop
7 4 (1.99%) iptables
7 4 (1.99%) KVM
7 4 (1.99%) QEMU
8 2 (1.00%) Firmware
8 2 (1.00%) MetaFrame
8 2 (1.00%) VMware ESXi
9 1 (0.50%) BitLocker
9 1 (0.50%) XenApp
Systems Management
1 15 (7.46%) Cisco CUCM
2 13 (6.47%) Cisco UCCX
3 12 (5.97%) Ansible
4 11 (5.47%) Nagios
5 9 (4.48%) Cisco Prime
5 9 (4.48%) Microsoft Intune
5 9 (4.48%) SCCM
6 8 (3.98%) FortiGate
7 6 (2.99%) Backup Exec
7 6 (2.99%) Symantec Endpoint Protection
8 4 (1.99%) Galera Cluster
8 4 (1.99%) HAProxy
8 4 (1.99%) Jamf Pro
8 4 (1.99%) ZABBIX
9 2 (1.00%) Kubernetes
10 1 (0.50%) McAfee ePO
10 1 (0.50%) NetBackup
10 1 (0.50%) Puppet
10 1 (0.50%) Single Sign-On
10 1 (0.50%) Trend Micro Deep Security
Vendors
1 83 (41.29%) Cisco
1 83 (41.29%) Microsoft
2 28 (13.93%) Juniper
3 26 (12.94%) Aruba
3 26 (12.94%) Mitel
4 22 (10.95%) Palo Alto
5 21 (10.45%) SonicWALL
6 20 (9.95%) VMware
7 19 (9.45%) Apple
8 16 (7.96%) Citrix
8 16 (7.96%) Dell
9 13 (6.47%) Ruckus Wireless
9 13 (6.47%) SolarWinds
10 12 (5.97%) HP
11 11 (5.47%) Nokia
12 10 (4.98%) Aerohive Networks
12 10 (4.98%) Sonus
12 10 (4.98%) Splunk
13 9 (4.48%) Red Hat
14 8 (3.98%) Sophos