The following table provides summary statistics for contract job vacancies advertised in 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 April 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
England / London
3 months to
28 Apr 2017
Same period 2016 Same period 2015
Rank 407 423 -
Rank change year-on-year +16 -  
Contract jobs citing tcpdump 2 12 0
As % of all contract IT jobs advertised in London 0.010% 0.052% -
As % of the Communications & Networking category 0.084% 0.41% -
Number of daily rates quoted 0 9 0
Median daily rate - £393 -
UK excluding London median daily rate £420 £453 £475
% change year-on-year -7.18% -4.73%  
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 London with a requirement for communications and computer networking skills.

Contract Communications & Computer Network Skills
London
Contract job vacancies with a requirement for communications and computer networking skills 2377 2936 2968
As % of all contract IT job vacancies advertised in London 11.55% 12.76% 13.26%
Number of daily rates quoted 1576 2033 1895
Median daily rate £450 £425 £375
Median daily rate % change year-on-year +5.88% +13.33%  
90% offered a daily rate of more than £250 £250 £225
10% offered a daily rate of more than £575 £550 £550
UK excluding London median daily rate £388 £364 £342
% change year-on-year +6.45% +6.43%  
Number of hourly rates quoted 68 44 82
Median hourly rate £25.00 £21.34 £24.25
Median hourly rate % change year-on-year +17.15% -12.00%  
90% offered a hourly rate of more than £17.00 £12.50 £14.00
10% offered a hourly rate of more than £50.00 £30.00 £50.00
UK excluding London median hourly rate £25.00 £30.00 £30.00
% change year-on-year -16.66% -  

tcpdump
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing tcpdump as a proportion of all contract or permanent IT jobs with a match in the Communications & Networking category.

Job vacancy trend for tcpdump in London

tcpdump
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for tcpdump in London

tcpdump
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for tcpdump in London

For the 6 months to 28 April 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 London region with a requirement for tcpdump.

1 13 (100.00%) Perl
1 13 (100.00%) Bash Shell
2 11 (84.62%) Red Hat Enterprise Linux
2 11 (84.62%) Linux
2 11 (84.62%) Red Hat
3 8 (61.54%) Reuters
3 8 (61.54%) High Availability
3 8 (61.54%) Multicast
3 8 (61.54%) Analytical Skills
3 8 (61.54%) Low Latency
4 7 (53.85%) Thomson Reuters DACS
4 7 (53.85%) ITRS Geneos
4 7 (53.85%) SLA
4 7 (53.85%) Equities
5 5 (38.46%) Apache
5 5 (38.46%) Python
5 5 (38.46%) Amazon AWS
5 5 (38.46%) Ruby
5 5 (38.46%) Wireshark
5 5 (38.46%) Ansible
5 5 (38.46%) Docker
5 5 (38.46%) Fixnetix
5 5 (38.46%) DevOps
6 3 (23.08%) IaaS
6 3 (23.08%) Windows
6 3 (23.08%) WebLogic
6 3 (23.08%) Server Building
7 2 (15.38%) Dynatrace
7 2 (15.38%) Virtual Environments
7 2 (15.38%) The Twelve-Factor App

tcpdump
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 5 (38.46%) Apache
2 3 (23.08%) WebLogic
3 2 (15.38%) Elasticsearch
Cloud Services
1 5 (38.46%) Amazon AWS
2 3 (23.08%) IaaS
3 2 (15.38%) Amazon EC2
3 2 (15.38%) Microsoft Azure
Communications & Networking
1 8 (61.54%) Multicast
2 5 (38.46%) Wireshark
3 2 (15.38%) DNS
3 2 (15.38%) Firewall
3 2 (15.38%) HTTP
3 2 (15.38%) VPN
Database & Business Intelligence
1 2 (15.38%) Apache Cassandra
1 2 (15.38%) Hadoop
1 2 (15.38%) MongoDB
1 2 (15.38%) MySQL
1 2 (15.38%) NoSQL
Development Applications
1 2 (15.38%) Ant
1 2 (15.38%) Git (software)
1 2 (15.38%) Maven
1 2 (15.38%) Subversion
Job Titles
1 8 (61.54%) Market Data Engineer
2 7 (53.85%) Data Engineer
3 4 (30.77%) DevOps Engineer
4 3 (23.08%) Linux/Unix DevOps
4 3 (23.08%) Platform Engineer
5 2 (15.38%) DevOps Systems Engineer
5 2 (15.38%) Java Engineer
5 2 (15.38%) Linux DevOps Engineer
5 2 (15.38%) Linux Engineer
5 2 (15.38%) Linux Systems Engineer
5 2 (15.38%) Systems Engineer
6 1 (7.69%) Administrator
6 1 (7.69%) DevOps Administrator
6 1 (7.69%) Linux Administrator
6 1 (7.69%) Linux DevOps Administrator
6 1 (7.69%) Linux Systems Administrator
6 1 (7.69%) Systems Administrator
6 1 (7.69%) WebLogic Administrator
Libraries, Frameworks & Software Standards
1 2 (15.38%) Ajax
1 2 (15.38%) CSS
1 2 (15.38%) JSON
1 2 (15.38%) Node.js
1 2 (15.38%) RabbitMQ
1 2 (15.38%) XML
Miscellaneous
1 8 (61.54%) Analytical Skills
2 7 (53.85%) Equities
3 2 (15.38%) Computer Science
Operating Systems
1 11 (84.62%) Linux
1 11 (84.62%) Red Hat Enterprise Linux
2 3 (23.08%) Windows
3 2 (15.38%) Unix
Processes & Methodologies
1 8 (61.54%) High Availability
1 8 (61.54%) Low Latency
2 5 (38.46%) DevOps
3 3 (23.08%) Server Building
4 2 (15.38%) Auto-Scaling
4 2 (15.38%) Continuous Delivery
4 2 (15.38%) Continuous Integration
4 2 (15.38%) Cryptography
4 2 (15.38%) Microservices
4 2 (15.38%) OOP
4 2 (15.38%) Performance Tuning
4 2 (15.38%) Physics
4 2 (15.38%) The Twelve-Factor App
4 2 (15.38%) Virtual Environments
4 2 (15.38%) Workflow
Programming Languages
1 13 (100.00%) Bash Shell
1 13 (100.00%) Perl
2 5 (38.46%) Python
2 5 (38.46%) Ruby
3 2 (15.38%) Java
Qualifications
1 2 (15.38%) Degree
2 1 (7.69%) BPSS Clearance
2 1 (7.69%) SC Cleared
2 1 (7.69%) Security Cleared
Quality Assurance & Compliance
1 7 (53.85%) SLA
System Software
1 5 (38.46%) Docker
Systems Management
1 7 (53.85%) ITRS Geneos
1 7 (53.85%) Thomson Reuters DACS
2 5 (38.46%) Ansible
3 2 (15.38%) Docker Swarm
3 2 (15.38%) Graphite
3 2 (15.38%) Icinga
3 2 (15.38%) Kubernetes
3 2 (15.38%) Mesos
3 2 (15.38%) Nagios
3 2 (15.38%) Opscode Chef
3 2 (15.38%) Puppet
3 2 (15.38%) Salt
3 2 (15.38%) ZABBIX
Vendors
1 11 (84.62%) Red Hat
2 8 (61.54%) Reuters
3 5 (38.46%) Fixnetix
4 2 (15.38%) Dynatrace
4 2 (15.38%) Oracle
4 2 (15.38%) Splunk