The following table provides summary statistics for contract job vacancies 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 27 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
UK
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 598 612 630
Rank change year-on-year +14 +18  
Contract jobs citing tcpdump 12 42 12
As % of all contract IT jobs advertised in the UK 0.025% 0.078% 0.022%
As % of the Communications & Networking category 0.19% 0.48% 0.15%
Number of daily rates quoted 3 26 7
Median daily rate £410 £393 £325
Median daily rate % change year-on-year +4.45% +20.76%  
90% offered a daily rate of more than £402 £339 £274
10% offered a daily rate of more than £482 £421 £375
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 with a requirement for communications and computer networking skills.

Contract Communications & Computer Network Skills
UK
Contract job vacancies with a requirement for communications and computer networking skills 6447 8714 7937
As % of all contract IT job vacancies advertised in the UK 13.68% 16.14% 14.39%
Number of daily rates quoted 3816 5270 4473
Median daily rate £400 £390 £355
Median daily rate % change year-on-year +2.56% +9.85%  
90% offered a daily rate of more than £211 £240 £213
10% offered a daily rate of more than £550 £550 £500
UK excluding London median daily rate £375 £365 £340
% change year-on-year +2.73% +7.35%  
Number of hourly rates quoted 395 433 468
Median hourly rate £28.27 £28.50 £23.00
Median hourly rate % change year-on-year -0.82% +23.91%  
90% offered a hourly rate of more than £12.50 £13.00 £12.50
10% offered a hourly rate of more than £50.00 £47.83 £47.50
UK excluding London median hourly rate £30.00 £31.50 £24.00
% change year-on-year -4.76% +31.25%  

tcpdump
Job Vacancy Trend

The job posting trend of jobs advertised 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 the UK

tcpdump
Contractor Daily Rate Trend

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

Contractor daily rate trend for tcpdump in the UK

tcpdump
Contractor Hourly Rate Trend

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

Contractor hourly rate trend for tcpdump in the UK

tcpdump
Top 9 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing tcpdump within the UK over the 3 months to 27 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England -9 10 £405 +3.18% 5
North West +20 5 £405 -
London -4 5 - - 1
Cheshire - 4 £400 -
Cardiff - 2 £500 -
South Wales - 2 £500 -
Wales - 2 £500 -
Warrington - 1 £400 -
Manchester - 1 £410 -

For the 6 months to 27 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 with a requirement for tcpdump.

1 15 (65.22%) Linux
2 13 (56.52%) Perl
3 11 (47.83%) DevOps
4 10 (43.48%) Wireshark
5 9 (39.13%) Oracle
5 9 (39.13%) Unix
5 9 (39.13%) HTTP
5 9 (39.13%) DNS
6 8 (34.78%) Ant
6 8 (34.78%) Java
6 8 (34.78%) Red Hat
6 8 (34.78%) Firewall
6 8 (34.78%) Maven
6 8 (34.78%) Continuous Integration
6 8 (34.78%) Red Hat Enterprise Linux
6 8 (34.78%) Bash Shell
6 8 (34.78%) Continuous Delivery
7 7 (30.43%) Analytical Skills
7 7 (30.43%) Graphite
7 7 (30.43%) Ansible
7 7 (30.43%) NoSQL
7 7 (30.43%) Puppet
7 7 (30.43%) Hadoop
7 7 (30.43%) SSH
7 7 (30.43%) Windows
7 7 (30.43%) AIX
7 7 (30.43%) Python
8 6 (26.09%) Agile Software Development
8 6 (26.09%) Subversion
8 6 (26.09%) VPN

tcpdump
Co-occurring IT Skills 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 (21.74%) Apache
2 4 (17.39%) Confluence
2 4 (17.39%) Elasticsearch
3 1 (4.35%) IIS
3 1 (4.35%) WebLogic
3 1 (4.35%) WebSphere
Business Applications
1 1 (4.35%) Remedy ITSM
Cloud Services
1 5 (21.74%) Amazon AWS
2 4 (17.39%) Amazon EC2
2 4 (17.39%) Microsoft Azure
3 2 (8.70%) GitHub
Communications & Networking
1 10 (43.48%) Wireshark
2 9 (39.13%) DNS
2 9 (39.13%) HTTP
3 8 (34.78%) Firewall
4 7 (30.43%) SSH
5 6 (26.09%) VPN
6 5 (21.74%) SSL
6 5 (21.74%) TCP/IP
7 4 (17.39%) FTP
7 4 (17.39%) Multicast
7 4 (17.39%) PuTTY
7 4 (17.39%) VLAN
7 4 (17.39%) WAN
8 3 (13.04%) BGP
8 3 (13.04%) Cisco ASA
8 3 (13.04%) LAN
8 3 (13.04%) MPLS
8 3 (13.04%) OSPF
8 3 (13.04%) VPLS
9 2 (8.70%) LDAP
Database & Business Intelligence
1 7 (30.43%) Hadoop
1 7 (30.43%) NoSQL
2 4 (17.39%) Apache Cassandra
2 4 (17.39%) MongoDB
2 4 (17.39%) MySQL
3 3 (13.04%) Big Data
4 2 (8.70%) SQL Server
5 1 (4.35%) PowerCenter
Development Applications
1 8 (34.78%) Ant
1 8 (34.78%) Maven
2 6 (26.09%) Git (software)
2 6 (26.09%) Subversion
3 4 (17.39%) Hudson
3 4 (17.39%) Jenkins
3 4 (17.39%) JIRA
4 2 (8.70%) Gradle
4 2 (8.70%) NuGet
4 2 (8.70%) Vagrant
Job Titles
1 8 (34.78%) DevOps Engineer
2 4 (17.39%) Data Engineer
2 4 (17.39%) Java Engineer
2 4 (17.39%) Market Data Engineer
3 3 (13.04%) Big Data Developer
3 3 (13.04%) Developer
3 3 (13.04%) Software Developer
4 2 (8.70%) Network Engineer
5 1 (4.35%) Architect
5 1 (4.35%) Hadoop Developer
5 1 (4.35%) Java Developer
5 1 (4.35%) Java Hadoop Developer
5 1 (4.35%) Java Software Developer
5 1 (4.35%) JIRA Engineer
5 1 (4.35%) Linux Developer
5 1 (4.35%) Migration Engineer
5 1 (4.35%) Network Architect
5 1 (4.35%) Platform Engineer
5 1 (4.35%) Senior Network Engineer
5 1 (4.35%) SQL Developer
Libraries, Frameworks & Software Standards
1 4 (17.39%) Ajax
1 4 (17.39%) CSS
1 4 (17.39%) JSON
1 4 (17.39%) Node.js
1 4 (17.39%) RabbitMQ
1 4 (17.39%) XML
1 4 (17.39%) X-Windows
2 3 (13.04%) Apache Avro
2 3 (13.04%) Elastic Stack
2 3 (13.04%) Kafka
3 1 (4.35%) .NET
Miscellaneous
1 7 (30.43%) Analytical Skills
2 4 (17.39%) Computer Science
2 4 (17.39%) Linux Command Line
2 4 (17.39%) Mainframe
2 4 (17.39%) PKI
3 3 (13.04%) Equities
4 2 (8.70%) Data Centre
5 1 (4.35%) Driving Licence
Operating Systems
1 15 (65.22%) Linux
2 9 (39.13%) Unix
3 8 (34.78%) Red Hat Enterprise Linux
4 7 (30.43%) AIX
4 7 (30.43%) Windows
Processes & Methodologies
1 11 (47.83%) DevOps
2 8 (34.78%) Continuous Delivery
2 8 (34.78%) Continuous Integration
3 6 (26.09%) Agile Software Development
4 5 (21.74%) Cryptography
5 4 (17.39%) Auto-Scaling
5 4 (17.39%) Configuration Management
5 4 (17.39%) High Availability
5 4 (17.39%) Low Latency
5 4 (17.39%) Microservices
5 4 (17.39%) OOP
5 4 (17.39%) Performance Tuning
5 4 (17.39%) Physics
5 4 (17.39%) Server Hardening
5 4 (17.39%) Statistics
5 4 (17.39%) The Twelve-Factor App
5 4 (17.39%) Virtual Environments
5 4 (17.39%) Workflow
6 3 (13.04%) Data Security
6 3 (13.04%) Open Source
Programming Languages
1 13 (56.52%) Perl
2 8 (34.78%) Bash Shell
2 8 (34.78%) Java
3 7 (30.43%) Python
4 5 (21.74%) JCL
4 5 (21.74%) SQL
5 4 (17.39%) Ruby
5 4 (17.39%) Shell Script
6 2 (8.70%) PowerShell
7 1 (4.35%) C
Qualifications
1 5 (21.74%) Degree
2 4 (17.39%) Master's Degree
2 4 (17.39%) SC Cleared
2 4 (17.39%) Security Cleared
3 1 (4.35%) AWS Certification
3 1 (4.35%) BPSS Clearance
Quality Assurance & Compliance
1 3 (13.04%) SLA
System Software
1 6 (26.09%) Docker
2 4 (17.39%) iptables
3 3 (13.04%) HDFS
4 2 (8.70%) NFS
Systems Management
1 7 (30.43%) Ansible
1 7 (30.43%) Graphite
1 7 (30.43%) Puppet
2 5 (21.74%) Opscode Chef
2 5 (21.74%) Salt
3 4 (17.39%) Docker Swarm
3 4 (17.39%) Icinga
3 4 (17.39%) Kubernetes
3 4 (17.39%) Mesos
3 4 (17.39%) Nagios
3 4 (17.39%) ZABBIX
4 3 (13.04%) Grafana
4 3 (13.04%) ITRS Geneos
4 3 (13.04%) Thomson Reuters DACS
5 1 (4.35%) Control-M
Vendors
1 9 (39.13%) Oracle
2 8 (34.78%) Red Hat
3 4 (17.39%) Dynatrace
3 4 (17.39%) IBM
3 4 (17.39%) Reuters
3 4 (17.39%) Splunk
4 3 (13.04%) Cisco
4 3 (13.04%) Fixnetix
4 3 (13.04%) Juniper
5 1 (4.35%) BMC
5 1 (4.35%) F5
5 1 (4.35%) Informatica
5 1 (4.35%) McAfee
5 1 (4.35%) Micro Focus
5 1 (4.35%) Remedy
5 1 (4.35%) Thunderhead