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 30 March 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
30 Mar 2017
Same period 2016 Same period 2015
Rank 589 620 618
Rank change year-on-year +31 -2  
Contract jobs citing tcpdump 11 20 7
As % of all contract IT jobs advertised in the UK 0.024% 0.037% 0.013%
As % of the Communications & Networking category 0.17% 0.25% 0.088%
Number of daily rates quoted 5 13 6
Median daily rate £445 £538 £475
Median daily rate % change year-on-year -17.20% +13.15%  
90% offered a daily rate of more than £369 £320 £316
10% offered a daily rate of more than £511 £595 £525
UK excluding London median daily rate £420 £506 £475
% change year-on-year -17.03% +6.57%  
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 6563 7989 7930
As % of all contract IT job vacancies advertised in the UK 14.41% 14.76% 14.77%
Number of daily rates quoted 4035 4785 4336
Median daily rate £400 £383 £363
Median daily rate % change year-on-year +4.57% +5.51%  
90% offered a daily rate of more than £225 £235 £205
10% offered a daily rate of more than £550 £535 £500
UK excluding London median daily rate £375 £363 £347
% change year-on-year +3.44% +4.32%  
Number of hourly rates quoted 367 338 438
Median hourly rate £25.00 £30.00 £27.00
Median hourly rate % change year-on-year -16.66% +11.11%  
90% offered a hourly rate of more than £12.07 £13.00 £13.00
10% offered a hourly rate of more than £50.00 £50.00 £46.22
UK excluding London median hourly rate £22.50 £37.00 £29.50
% change year-on-year -39.18% +25.42%  

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 Daily Rate Histogram

The daily rate distribution of IT jobs citing tcpdump over the 3 months to 30 March 2017.

Contractor daily rate histogram 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 12 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 30 March 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 +37 9 £473 -12.09% 5
London +30 4 £481 -12.50% 3
South East +15 3 £500 -11.11%
Hampshire +13 3 £500 +25.78%
North West +28 2 £420 -4.00% 2
Cheshire - 2 £420 -
South Wales - 2 £335 -
Wales - 2 £335 -
City of London +12 1 £445 +69.52% 1
Warrington - 1 £420 -
Winchester - 1 £500 -
Cardiff - 1 - -

For the 6 months to 30 March 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 19 (79.17%) Linux
2 15 (62.50%) Perl
2 15 (62.50%) Red Hat
2 15 (62.50%) Red Hat Enterprise Linux
3 14 (58.33%) Bash Shell
4 12 (50.00%) Wireshark
5 10 (41.67%) Windows
5 10 (41.67%) Analytical Skills
6 9 (37.50%) DevOps
7 8 (33.33%) Docker
7 8 (33.33%) Low Latency
7 8 (33.33%) Multicast
7 8 (33.33%) Reuters
7 8 (33.33%) High Availability
8 7 (29.17%) Equities
8 7 (29.17%) Apache
8 7 (29.17%) Python
8 7 (29.17%) SLA
8 7 (29.17%) ITRS Geneos
8 7 (29.17%) Ansible
8 7 (29.17%) Thomson Reuters DACS
9 6 (25.00%) Amazon AWS
10 5 (20.83%) SC Cleared
10 5 (20.83%) Security Cleared
10 5 (20.83%) IaaS
10 5 (20.83%) Ruby
10 5 (20.83%) VLAN
10 5 (20.83%) Cisco
10 5 (20.83%) Juniper
10 5 (20.83%) LAN

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 7 (29.17%) Apache
2 5 (20.83%) WebLogic
3 2 (8.33%) Confluence
3 2 (8.33%) Tomcat
4 1 (4.17%) Elasticsearch
4 1 (4.17%) JBoss
4 1 (4.17%) Jetty
4 1 (4.17%) nginx
Business Applications
1 1 (4.17%) Remedy ITSM
Cloud Services
1 6 (25.00%) Amazon AWS
2 5 (20.83%) IaaS
3 1 (4.17%) Datadog
3 1 (4.17%) Google Cloud Platform
3 1 (4.17%) SaaS
Communications & Networking
1 12 (50.00%) Wireshark
2 8 (33.33%) Multicast
3 5 (20.83%) LAN
3 5 (20.83%) VLAN
3 5 (20.83%) WAN
4 4 (16.67%) Firewall
4 4 (16.67%) MPLS
4 4 (16.67%) SSH
4 4 (16.67%) TCP/IP
5 3 (12.50%) BGP
5 3 (12.50%) Cisco ASA
5 3 (12.50%) DNS
5 3 (12.50%) OSPF
5 3 (12.50%) SSL
5 3 (12.50%) VPLS
6 2 (8.33%) Junos
6 2 (8.33%) LDAP
6 2 (8.33%) VPN
7 1 (4.17%) ATM
7 1 (4.17%) ISDN
Database & Business Intelligence
1 2 (8.33%) SQL Server
2 1 (4.17%) Big Data
2 1 (4.17%) Hadoop
2 1 (4.17%) MariaDB
2 1 (4.17%) MySQL
2 1 (4.17%) NoSQL
2 1 (4.17%) PowerCenter
2 1 (4.17%) Redis
Development Applications
1 3 (12.50%) Git (software)
1 3 (12.50%) Jenkins
2 2 (8.33%) Ant
2 2 (8.33%) Hudson
2 2 (8.33%) JIRA
2 2 (8.33%) Maven
2 2 (8.33%) NuGet
2 2 (8.33%) Subversion
2 2 (8.33%) Vagrant
General
1 1 (4.17%) Italian Language
1 1 (4.17%) Marketing
Job Titles
1 8 (33.33%) Market Data Engineer
2 7 (29.17%) Data Engineer
3 5 (20.83%) Linux/Unix DevOps
4 4 (16.67%) Administrator
4 4 (16.67%) DevOps Administrator
4 4 (16.67%) DevOps Engineer
5 3 (12.50%) Linux Administrator
5 3 (12.50%) Linux DevOps Administrator
5 3 (12.50%) Linux Engineer
5 3 (12.50%) Linux Systems Administrator
5 3 (12.50%) Linux Systems Engineer
5 3 (12.50%) Platform Engineer
5 3 (12.50%) Systems Administrator
5 3 (12.50%) Systems Engineer
5 3 (12.50%) WebLogic Administrator
6 2 (8.33%) DevOps Systems Engineer
6 2 (8.33%) Linux DevOps Engineer
6 2 (8.33%) Network Engineer
7 1 (4.17%) LAN Engineer
7 1 (4.17%) Lead DevOps
Libraries, Frameworks & Software Standards
1 2 (8.33%) Kafka
2 1 (4.17%) 802.1X
2 1 (4.17%) Apache Avro
2 1 (4.17%) Elastic Stack
2 1 (4.17%) Java EE
2 1 (4.17%) LAMP
2 1 (4.17%) LEMP Stack
2 1 (4.17%) LINQ to SQL
2 1 (4.17%) X-Windows
Miscellaneous
1 10 (41.67%) Analytical Skills
2 7 (29.17%) Equities
3 2 (8.33%) PKI
4 1 (4.17%) Data Centre
4 1 (4.17%) Driving Licence
4 1 (4.17%) Linux Command Line
4 1 (4.17%) Mainframe
4 1 (4.17%) Replication
Operating Systems
1 19 (79.17%) Linux
2 15 (62.50%) Red Hat Enterprise Linux
3 10 (41.67%) Windows
4 4 (16.67%) AIX
5 1 (4.17%) Debian
5 1 (4.17%) Ubuntu
5 1 (4.17%) Unix
Processes & Methodologies
1 9 (37.50%) DevOps
2 8 (33.33%) High Availability
2 8 (33.33%) Low Latency
3 5 (20.83%) Server Building
4 2 (8.33%) Agile Software Development
4 2 (8.33%) Configuration Management
4 2 (8.33%) Continuous Delivery
4 2 (8.33%) Continuous Integration
4 2 (8.33%) Open Source
4 2 (8.33%) Performance Monitoring
4 2 (8.33%) Server Hardening
5 1 (4.17%) Analytics
5 1 (4.17%) Capacity Planning
5 1 (4.17%) Change Management
5 1 (4.17%) Cryptography
5 1 (4.17%) Data Security
5 1 (4.17%) Identity Management
5 1 (4.17%) Network Design
5 1 (4.17%) Problem Management
5 1 (4.17%) Statistics
Programming Languages
1 15 (62.50%) Perl
2 14 (58.33%) Bash Shell
3 7 (29.17%) Python
4 5 (20.83%) Ruby
5 3 (12.50%) SQL
6 2 (8.33%) Java
6 2 (8.33%) JCL
7 1 (4.17%) Shell Script
Qualifications
1 5 (20.83%) SC Cleared
1 5 (20.83%) Security Cleared
2 1 (4.17%) BPSS Clearance
2 1 (4.17%) CCIE
2 1 (4.17%) Cisco Certification
Quality Assurance & Compliance
1 7 (29.17%) SLA
System Software
1 8 (33.33%) Docker
2 2 (8.33%) iptables
2 2 (8.33%) NFS
3 1 (4.17%) Apache ZooKeeper
3 1 (4.17%) Gluster
3 1 (4.17%) HDFS
Systems Management
1 7 (29.17%) Ansible
1 7 (29.17%) ITRS Geneos
1 7 (29.17%) Thomson Reuters DACS
2 1 (4.17%) Cisco Prime
2 1 (4.17%) Control-M
2 1 (4.17%) Grafana
2 1 (4.17%) Graphite
2 1 (4.17%) HAProxy
2 1 (4.17%) Kubernetes
2 1 (4.17%) Nagios
2 1 (4.17%) Opscode Chef
2 1 (4.17%) Puppet
2 1 (4.17%) Salt
2 1 (4.17%) Sysdig
Vendors
1 15 (62.50%) Red Hat
2 8 (33.33%) Reuters
3 5 (20.83%) Cisco
3 5 (20.83%) Fixnetix
3 5 (20.83%) Juniper
4 2 (8.33%) Oracle
5 1 (4.17%) Apple
5 1 (4.17%) Blue Coat
5 1 (4.17%) BMC
5 1 (4.17%) CheckPoint
5 1 (4.17%) F5
5 1 (4.17%) Google
5 1 (4.17%) IBM
5 1 (4.17%) Informatica
5 1 (4.17%) Intel Security
5 1 (4.17%) Micro Focus
5 1 (4.17%) Percona
5 1 (4.17%) Remedy
5 1 (4.17%) Thunderhead