Period
to 12 December 2018

The following table provides summary statistics for permanent job vacancies advertised in Hertfordshire 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 12 December 2018 with a comparison to the same period in the previous 2 years.

Voice Over IP (VoIP)
East of England > Hertfordshire
6 months to
12 Dec 2018
Same period 2017 Same period 2016
Rank 159 141 173
Rank change year-on-year -18 +32 +9
Permanent jobs citing VoIP 45 85 51
As % of all permanent IT jobs advertised in Hertfordshire 1.17% 1.92% 1.13%
As % of the Communications & Networking category 5.80% 9.25% 6.68%
Number of salaries quoted 38 58 40
Hertfordshire median annual salary £42,500 £42,500 £42,000
Median salary % change year-on-year - +1.19% -6.67%
10th Percentile £26,375 £25,500 £24,675
90th Percentile £58,250 £65,375 £54,375
East of England median annual salary £35,000 £42,500 £42,500
% change year-on-year -17.65% - +6.25%

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 Hertfordshire with a requirement for communications or computer networking skills.

All Communications and Computer Networking Skills
Hertfordshire
Permanent vacancies with a requirement for communications or computer networking skills 776 919 764
As % of all permanent IT jobs advertised in Hertfordshire 20.09% 20.77% 16.98%
Number of salaries quoted 534 762 604
Hertfordshire median annual salary £45,000 £46,500 £45,000
Median salary % change year-on-year -3.23% +3.33% -
10th Percentile £27,000 £25,000 £23,000
90th Percentile £72,350 £68,750 £65,000
East of England median annual salary £45,000 £45,000 £45,000

VoIP
Job Vacancy Trend in Hertfordshire

Job postings citing VoIP as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for VoIP in Hertfordshire

VoIP
Salary Trend in Hertfordshire

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

Salary trend for VoIP in Hertfordshire

VoIP
Salary Histogram in Hertfordshire

The salary distribution of IT jobs citing VoIP in Hertfordshire over the 6 months to 12 December 2018.

Salary histogram for VoIP in Hertfordshire

VoIP
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing VoIP within the Hertfordshire region over the 6 months to 12 December 2018. 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
Watford -6 17 £32,500 -50.00%
Hatfield +6 10 £45,000 +5.88% 5
Waltham Cross - 6 £55,000 - 1
Stevenage +15 3 £28,500 -48.18%
Potters Bar - 3 - -
VoIP
East of England

For the 6 months to 12 December 2018, 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 Hertfordshire region with a requirement for VoIP.

1 23 (51.11%) Windows
1 23 (51.11%) DHCP
2 22 (48.89%) Cisco
2 22 (48.89%) Linux
2 22 (48.89%) CCNA
2 22 (48.89%) Cisco Certification
3 19 (42.22%) TCP/IP
4 18 (40.00%) Telecoms
5 17 (37.78%) DNS
6 16 (35.56%) CCNP
7 15 (33.33%) Microsoft
7 15 (33.33%) Python
7 15 (33.33%) PBX
8 14 (31.11%) Internet
9 13 (28.89%) Active Directory
9 13 (28.89%) VMware
10 11 (24.44%) Firewall
10 11 (24.44%) Wireless
11 10 (22.22%) Data Centre
11 10 (22.22%) Network Security
11 10 (22.22%) Wireshark
12 9 (20.00%) Mitel
12 9 (20.00%) Juniper
12 9 (20.00%) IPv4
12 9 (20.00%) VoLTE
13 8 (17.78%) Analytical Skills
13 8 (17.78%) Windows 7
13 8 (17.78%) LAN
13 8 (17.78%) CCDA
13 8 (17.78%) CCDP

VoIP
Co-occurring IT Skills in Hertfordshire 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 5 (11.11%) MS Exchange
2 2 (4.44%) Skype for Business
3 1 (2.22%) Exchange Server 2010
Applications
1 4 (8.89%) Microsoft Office
2 3 (6.67%) Microsoft Excel
3 2 (4.44%) MS Visio
Business Applications
1 3 (6.67%) Payment Gateway
Cloud Services
1 4 (8.89%) Office 365
2 1 (2.22%) IaaS
2 1 (2.22%) Microsoft Azure
2 1 (2.22%) PaaS
Communications & Networking
1 23 (51.11%) DHCP
2 19 (42.22%) TCP/IP
3 17 (37.78%) DNS
4 15 (33.33%) PBX
5 14 (31.11%) Internet
6 11 (24.44%) Firewall
6 11 (24.44%) Wireless
7 10 (22.22%) Network Security
7 10 (22.22%) Wireshark
8 9 (20.00%) IPv4
8 9 (20.00%) VoLTE
9 8 (17.78%) LAN
9 8 (17.78%) WAN
10 6 (13.33%) HTTP
10 6 (13.33%) IGMP
10 6 (13.33%) RTCP
10 6 (13.33%) RTP
10 6 (13.33%) SNMP
10 6 (13.33%) VLAN
11 5 (11.11%) SS7
Database & Business Intelligence
1 7 (15.56%) SQL Server
2 5 (11.11%) MySQL
Development Applications
1 6 (13.33%) GDB
1 6 (13.33%) Subversion
1 6 (13.33%) Team Foundation Server
1 6 (13.33%) Valgrind
1 6 (13.33%) Visual Studio
2 3 (6.67%) Bitbucket
2 3 (6.67%) Git (software)
General
1 18 (40.00%) Telecoms
2 4 (8.89%) Retail
3 2 (4.44%) Back Office
4 1 (2.22%) Finance
Job Titles
1 20 (44.44%) Network Engineer
2 11 (24.44%) Voice Engineer
2 11 (24.44%) Voice Network Engineer
3 9 (20.00%) Developer
4 6 (13.33%) C Developer
4 6 (13.33%) Software Developer
4 6 (13.33%) Support Engineer
4 6 (13.33%) VoIP Developer
5 4 (8.89%) Analyst
5 4 (8.89%) Cisco Analyst
5 4 (8.89%) Cisco Network Analyst
5 4 (8.89%) Data Network Engineer
5 4 (8.89%) Network Analyst
5 4 (8.89%) PBX Engineer
6 3 (6.67%) Desktop Support
6 3 (6.67%) Infrastructure Analyst
6 3 (6.67%) Network Support
6 3 (6.67%) Network Support Engineer
6 3 (6.67%) PHP Developer
6 3 (6.67%) Senior Developer
Libraries, Frameworks & Software Standards
1 6 (13.33%) FreeSWITCH
1 6 (13.33%) XML
2 3 (6.67%) jQuery
3 2 (4.44%) CodeIgniter
3 2 (4.44%) CSS
3 2 (4.44%) HTML
3 2 (4.44%) HTML5
3 2 (4.44%) Twitter Bootstrap
4 1 (2.22%) Laravel
Miscellaneous
1 10 (22.22%) Data Centre
2 8 (17.78%) Analytical Skills
3 4 (8.89%) iSeries
3 4 (8.89%) Replication
4 2 (4.44%) Handset
4 2 (4.44%) Management Information System
4 2 (4.44%) Video Conferencing
5 1 (2.22%) Client/Server
5 1 (2.22%) Greenfield Project
Operating Systems
1 23 (51.11%) Windows
2 22 (48.89%) Linux
3 8 (17.78%) Windows 7
4 6 (13.33%) Windows Server
4 6 (13.33%) Windows Server 2012
5 5 (11.11%) Mac OS X
6 4 (8.89%) Windows 10
6 4 (8.89%) Windows 8
7 2 (4.44%) Ubuntu
7 2 (4.44%) Windows Server 2008
Processes & Methodologies
1 6 (13.33%) CRM
1 6 (13.33%) Information Security
1 6 (13.33%) Infrastructure Engineering
1 6 (13.33%) OO
2 5 (11.11%) Network Management
3 4 (8.89%) Data Privacy
3 4 (8.89%) Load Balancing
3 4 (8.89%) Migration
3 4 (8.89%) Network Design
3 4 (8.89%) Network Optimisation
3 4 (8.89%) Problem-Solving
4 3 (6.67%) Network Monitoring
4 3 (6.67%) Service Management
5 2 (4.44%) Business Continuity
5 2 (4.44%) Change Management
5 2 (4.44%) Disaster Recovery
5 2 (4.44%) ITIL V3
5 2 (4.44%) ITSM
5 2 (4.44%) MVC
5 2 (4.44%) Service Delivery
Programming Languages
1 15 (33.33%) Python
2 7 (15.56%) SQL
3 6 (13.33%) C
3 6 (13.33%) C++
3 6 (13.33%) Perl
4 3 (6.67%) PHP
5 1 (2.22%) C#
5 1 (2.22%) PowerShell
Qualifications
1 22 (48.89%) CCNA
1 22 (48.89%) Cisco Certification
2 16 (35.56%) CCNP
3 8 (17.78%) CCDA
3 8 (17.78%) CCDP
4 6 (13.33%) Degree
5 4 (8.89%) CCIE
6 2 (4.44%) ITIL Foundation Certificate
6 2 (4.44%) Microsoft Certification
6 2 (4.44%) SC Cleared
6 2 (4.44%) Security Cleared
7 1 (2.22%) CCVP
7 1 (2.22%) JNCIA
7 1 (2.22%) JNCIP
7 1 (2.22%) JNCIS
Quality Assurance & Compliance
1 4 (8.89%) SLA
2 2 (4.44%) ISO/IEC 27001
System Software
1 13 (28.89%) Active Directory
2 7 (15.56%) Hyper-V
3 6 (13.33%) KVM
3 6 (13.33%) VirtualBox
4 3 (6.67%) VMware Infrastructure
5 2 (4.44%) Firmware
5 2 (4.44%) Microsoft Virtual Server
5 2 (4.44%) Virtual Servers
6 1 (2.22%) Docker
6 1 (2.22%) VMware ESXi
Systems Management
1 4 (8.89%) Cisco CUCM
2 2 (4.44%) SCCM
3 1 (2.22%) Ansible
3 1 (2.22%) Cisco Prime
3 1 (2.22%) Kubernetes
3 1 (2.22%) vCenter Server
Vendors
1 22 (48.89%) Cisco
2 15 (33.33%) Microsoft
3 13 (28.89%) VMware
4 9 (20.00%) Juniper
4 9 (20.00%) Mitel
5 6 (13.33%) Fortinet
6 4 (8.89%) BroadSoft
6 4 (8.89%) EMC
6 4 (8.89%) Huawei
6 4 (8.89%) IBM
6 4 (8.89%) Salesforce.com
7 3 (6.67%) Avaya
7 3 (6.67%) BT
8 1 (2.22%) CheckPoint
8 1 (2.22%) Citrix
8 1 (2.22%) Ericsson