Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for ISDN skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ISDN over the 6 months to 22 November 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Integrated Service Digital Network (ISDN)
Central London > City of London
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 246 230 263
Rank change year-on-year -16 +33 +33
Contract jobs citing ISDN 11 14 8
As % of all contract IT jobs advertised in the City of London 0.15% 0.21% 0.089%
As % of the Communications & Networking category 1.46% 1.44% 0.73%
Number of daily rates quoted 9 7 5
City of London median daily rate £427 £382 £425
Median daily rate % change year-on-year +11.78% -10.12% -0.06%
10th Percentile £303 £159 £392
90th Percentile £454 £441 £505
Central London median daily rate £427 £392 £413
% change year-on-year +9.00% -5.03% -3.00%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

ISDN is in the Communications and Computer Networking category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for communications or computer networking skills.

All Communications and Computer Networking Skills
City of London
Contract vacancies with a requirement for communications or computer networking skills 754 970 1102
As % of all contract IT jobs advertised in the City of London 10.53% 14.48% 12.26%
Number of daily rates quoted 588 740 828
City of London median daily rate £450 £450 £425
Median daily rate % change year-on-year - +5.88% +6.12%
10th Percentile £213 £286 £263
90th Percentile £638 £588 £575
Central London median daily rate £450 £450 £425
% change year-on-year - +5.88% +6.25%
Number of hourly rates quoted 12 14 30
City of London median hourly rate £17.00 £19.00 £17.74
Median hourly rate % change year-on-year -10.53% +7.10% -9.03%
10th Percentile £11.68 £11.50 £14.03
90th Percentile £23.52 £48.63 £30.33
Central London median hourly rate £17.00 £19.00 £17.74
% change year-on-year -10.53% +7.10% -6.63%

ISDN
Job Vacancy Trend in the City of London

Job postings citing ISDN as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for ISDN in the City of London

ISDN
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing ISDN in the City of London.

Contractor daily rate trend for ISDN in the City of London

ISDN
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing ISDN in the City of London over the 6 months to 22 November 2017.

Contractor daily rate histogram for ISDN in the City of London

ISDN
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing ISDN in the City of London.

Contractor hourly rate trend for ISDN in the City of London

For the 6 months to 22 November 2017, IT contractor jobs citing ISDN also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for ISDN.

1 8 (72.73%) Cisco
2 6 (54.55%) Microsoft
2 6 (54.55%) TCP/IP
2 6 (54.55%) Firewall
2 6 (54.55%) Network Management
3 5 (45.45%) Unified Communications
3 5 (45.45%) VLAN
3 5 (45.45%) Cisco Certification
3 5 (45.45%) VoIP
4 4 (36.36%) PPP
4 4 (36.36%) SNMP
4 4 (36.36%) Cisco Prime
4 4 (36.36%) Avaya
4 4 (36.36%) TACACS
4 4 (36.36%) Q.931
4 4 (36.36%) QSIG
4 4 (36.36%) H.323
4 4 (36.36%) Telecoms
4 4 (36.36%) DPNSS
4 4 (36.36%) SolarWinds
4 4 (36.36%) Skype for Business
4 4 (36.36%) Office 365
4 4 (36.36%) HSRP
4 4 (36.36%) Skype
4 4 (36.36%) 802.1X
5 3 (27.27%) Network Security
5 3 (27.27%) Incident Management
5 3 (27.27%) Banking
5 3 (27.27%) CCNP
5 3 (27.27%) ITIL

ISDN
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 4 (36.36%) Skype for Business
Cloud Services
1 4 (36.36%) Office 365
Communications & Networking
1 6 (54.55%) Firewall
1 6 (54.55%) TCP/IP
2 5 (45.45%) Unified Communications
2 5 (45.45%) VLAN
2 5 (45.45%) VoIP
3 4 (36.36%) DPNSS
3 4 (36.36%) H.323
3 4 (36.36%) HSRP
3 4 (36.36%) PPP
3 4 (36.36%) Q.931
3 4 (36.36%) QSIG
3 4 (36.36%) Skype
3 4 (36.36%) SNMP
3 4 (36.36%) TACACS
4 3 (27.27%) Network Security
5 2 (18.18%) Cisco ASA
5 2 (18.18%) Cisco IOS
5 2 (18.18%) VPN
5 2 (18.18%) WAN
5 2 (18.18%) Wireless
General
1 4 (36.36%) Telecoms
2 3 (27.27%) Banking
3 1 (9.09%) Finance
Job Titles
1 5 (45.45%) Voice Engineer
2 4 (36.36%) Unified Communications Engineer
3 3 (27.27%) Network Engineer
4 2 (18.18%) Analyst
4 2 (18.18%) Network Analyst
4 2 (18.18%) Security Engineer
4 2 (18.18%) Senior Network Engineer
4 2 (18.18%) Senior Security Engineer
5 1 (9.09%) Network Systems Engineer
5 1 (9.09%) Systems Engineer
5 1 (9.09%) Voice Network Engineer
Libraries, Frameworks & Software Standards
1 4 (36.36%) 802.1X
Miscellaneous
1 2 (18.18%) Video Conferencing
Operating Systems
1 2 (18.18%) Windows
Processes & Methodologies
1 6 (54.55%) Network Management
2 3 (27.27%) Incident Management
2 3 (27.27%) ITIL
3 2 (18.18%) Migration
3 2 (18.18%) Network Design
3 2 (18.18%) Network Monitoring
Qualifications
1 5 (45.45%) Cisco Certification
2 3 (27.27%) CCNP
3 2 (18.18%) DV Cleared
3 2 (18.18%) Security Cleared
4 1 (9.09%) CCNA
4 1 (9.09%) CCVP
Quality Assurance & Compliance
1 1 (9.09%) COBIT
Systems Management
1 4 (36.36%) Cisco Prime
2 1 (9.09%) Cisco CUCM
2 1 (9.09%) Cisco UCCX
Vendors
1 8 (72.73%) Cisco
2 6 (54.55%) Microsoft
3 4 (36.36%) Avaya
3 4 (36.36%) SolarWinds
4 2 (18.18%) Citrix
4 2 (18.18%) Juniper