The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for tcpdump skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited tcpdump over the 3 months to 28 June 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.

tcpdump
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank - 164 204
Contract jobs citing tcpdump 0 1 1
As % of all contract IT jobs advertised in the City of London - 0.030% 0.017%
As % of the Communications & Networking category - 0.21% 0.14%
Number of daily rates quoted 0 1 0
Median daily rate - £500 -
UK excluding London median daily rate £410 £375 £310
% change year-on-year +9.33% +20.96%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

tcpdump is in the communications and computer networking skills category. The next 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 and computer networking skills.

Contract Communications & Computer Network Skills
City of London
Contract job vacancies with a requirement for communications and computer networking skills 340 471 737
As % of all contract IT job vacancies advertised in the City of London 10.42% 13.99% 12.84%
Number of daily rates quoted 675 1008 1569
Median daily rate £427 £469 £413
Median daily rate % change year-on-year -8.90% +13.63%  
90% offered a daily rate of more than £191 £269 £275
10% offered a daily rate of more than £625 £594 £550
UK excluding London median daily rate £375 £365 £340
% change year-on-year +2.73% +7.35%  
Number of hourly rates quoted 61 23 43
Median hourly rate £24.86 £19.00 £17.98
Median hourly rate % change year-on-year +30.84% +5.67%  
90% offered a hourly rate of more than £21.40 £16.25 £14.55
10% offered a hourly rate of more than £30.00 £25.20 £32.86
UK excluding London median hourly rate £27.50 £31.50 £23.50
% change year-on-year -12.69% +34.04%  

tcpdump
Job Vacancy Trend in the City of London

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

Job vacancy trend for tcpdump in the City of London

tcpdump
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 tcpdump in the City of London.

Contractor daily rate trend for tcpdump in the City of London

For the 6 months to 28 June 2017, IT contractor jobs citing tcpdump 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 tcpdump.

1 1 (100.00%) Perl
1 1 (100.00%) Linux
1 1 (100.00%) SLA
1 1 (100.00%) Red Hat
1 1 (100.00%) Reuters
1 1 (100.00%) Equities
1 1 (100.00%) Red Hat Enterprise Linux
1 1 (100.00%) Bash Shell
1 1 (100.00%) High Availability
1 1 (100.00%) Fixnetix
1 1 (100.00%) Low Latency
1 1 (100.00%) Multicast
1 1 (100.00%) ITRS Geneos
1 1 (100.00%) Analytical Skills
1 1 (100.00%) Thomson Reuters DACS

tcpdump
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:

Communications & Networking
1 1 (100.00%) Multicast
Job Titles
1 1 (100.00%) Data Engineer
1 1 (100.00%) Market Data Engineer
Miscellaneous
1 1 (100.00%) Analytical Skills
1 1 (100.00%) Equities
Operating Systems
1 1 (100.00%) Linux
1 1 (100.00%) Red Hat Enterprise Linux
Processes & Methodologies
1 1 (100.00%) High Availability
1 1 (100.00%) Low Latency
Programming Languages
1 1 (100.00%) Bash Shell
1 1 (100.00%) Perl
Quality Assurance & Compliance
1 1 (100.00%) SLA
Systems Management
1 1 (100.00%) ITRS Geneos
1 1 (100.00%) Thomson Reuters DACS
Vendors
1 1 (100.00%) Fixnetix
1 1 (100.00%) Red Hat
1 1 (100.00%) Reuters