The following table provides summary statistics for contract job vacancies with a requirement for Postfix skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Postfix over the 3 months to 24 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.

Postfix
UK
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 594 612 634
Rank change year-on-year +18 +22  
Contract jobs citing Postfix 7 32 12
As % of all contract IT jobs advertised in the UK 0.015% 0.060% 0.021%
As % of the System Software category 0.14% 0.47% 0.20%
Number of daily rates quoted 1 19 8
Median daily rate £300 £340 £355
Median daily rate % change year-on-year -11.76% -4.22%  
UK excluding London median daily rate - £340 £355
% change year-on-year - -4.22%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Postfix is in the system software skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for system software skills.

Contract System Software Skills
UK
Contract job vacancies with a requirement for system software skills 5162 6772 5941
As % of all contract IT job vacancies advertised in the UK 11.16% 12.59% 10.59%
Number of daily rates quoted 3309 4180 3363
Median daily rate £401 £400 £350
Median daily rate % change year-on-year +0.31% +14.28%  
90% offered a daily rate of more than £180 £200 £180
10% offered a daily rate of more than £550 £550 £500
UK excluding London median daily rate £375 £350 £330
% change year-on-year +7.14% +6.06%  
Number of hourly rates quoted 304 471 626
Median hourly rate £17.00 £20.00 £17.50
Median hourly rate % change year-on-year -15.00% +14.28%  
90% offered a hourly rate of more than £11.15 £12.00 £11.00
10% offered a hourly rate of more than £47.50 £43.00 £40.00
UK excluding London median hourly rate £16.00 £21.50 £17.50
% change year-on-year -25.58% +22.85%  

Postfix
Job Vacancy Trend

The job posting trend of jobs advertised citing Postfix as a proportion of all contract or permanent IT jobs with a match in the System Software category.

Job vacancy trend for Postfix in the UK

Postfix
Contractor Daily Rate Trend

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

Contractor daily rate trend for Postfix in the UK

Postfix
Contractor Hourly Rate Trend

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

Contractor hourly rate trend for Postfix in the UK

Postfix
Top 3 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Postfix within the UK over the 3 months to 24 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 +25 7 £300 -11.76% 5
London +12 7 £300 -25.00%
Croydon - 6 - -

For the 6 months to 24 June 2017, IT contractor jobs citing Postfix 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 Postfix.

1 20 (100.00%) Linux
2 17 (85.00%) DNS
3 16 (80.00%) Squid
4 15 (75.00%) Service Management
4 15 (75.00%) Apache
4 15 (75.00%) Bash Shell
5 14 (70.00%) Ansible
6 13 (65.00%) OpenLDAP
6 13 (65.00%) VMware
7 12 (60.00%) PostgreSQL
7 12 (60.00%) Agile Software Development
7 12 (60.00%) Maven
7 12 (60.00%) Continuous Integration
7 12 (60.00%) Ant
7 12 (60.00%) Configuration Management
7 12 (60.00%) Git (software)
7 12 (60.00%) Amazon AWS
7 12 (60.00%) Puppet
7 12 (60.00%) Jenkins
7 12 (60.00%) Docker
7 12 (60.00%) DevOps
7 12 (60.00%) SonarQube
7 12 (60.00%) Continuous Delivery
8 11 (55.00%) Elastic Stack
8 11 (55.00%) Terraform
8 11 (55.00%) Sonatype
8 11 (55.00%) Sonatype Nexus
8 11 (55.00%) Liquibase
8 11 (55.00%) Kibana
8 11 (55.00%) logstash

Postfix
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 15 (75.00%) Apache
2 11 (55.00%) Confluence
2 11 (55.00%) Elasticsearch
3 8 (40.00%) Tomcat
4 3 (15.00%) IIS
Applications
1 1 (5.00%) HipChat
Cloud Services
1 12 (60.00%) Amazon AWS
2 10 (50.00%) Amazon CloudWatch
2 10 (50.00%) Amazon EC2
2 10 (50.00%) Amazon ELB
2 10 (50.00%) Amazon S3
2 10 (50.00%) Virtual Private Cloud
3 1 (5.00%) IaaS
3 1 (5.00%) Office 365
3 1 (5.00%) PaaS
Communications & Networking
1 17 (85.00%) DNS
2 13 (65.00%) OpenLDAP
3 11 (55.00%) OpenVPN
3 11 (55.00%) SSH
4 10 (50.00%) HTTP
5 5 (25.00%) LDAP
6 1 (5.00%) Firewall
6 1 (5.00%) IPsec
6 1 (5.00%) LAN
6 1 (5.00%) SSL
6 1 (5.00%) TCP/IP
6 1 (5.00%) VLAN
6 1 (5.00%) VPN
6 1 (5.00%) WAN
Database & Business Intelligence
1 12 (60.00%) PostgreSQL
2 10 (50.00%) Amazon RDS
3 3 (15.00%) MySQL
4 1 (5.00%) Apache Cassandra
4 1 (5.00%) Hadoop
4 1 (5.00%) MongoDB
4 1 (5.00%) NoSQL
4 1 (5.00%) RDBMS
4 1 (5.00%) Relational Database
4 1 (5.00%) Riak
4 1 (5.00%) SQL Server
Development Applications
1 12 (60.00%) Ant
1 12 (60.00%) Git (software)
1 12 (60.00%) Jenkins
1 12 (60.00%) Maven
1 12 (60.00%) SonarQube
2 11 (55.00%) JIRA
2 11 (55.00%) JUnit
2 11 (55.00%) Liquibase
2 11 (55.00%) Sonatype Nexus
3 10 (50.00%) Bitbucket
4 2 (10.00%) GitLab
5 1 (5.00%) Arsenale Dataplane
5 1 (5.00%) Artifactory
5 1 (5.00%) GoCD
5 1 (5.00%) JIRA Agile
5 1 (5.00%) Team Foundation Server
Job Titles
1 11 (55.00%) DevOps Engineer
2 9 (45.00%) AWS DevOps
2 9 (45.00%) AWS DevOps Engineer
2 9 (45.00%) AWS Engineer
3 5 (25.00%) Linux Engineer
3 5 (25.00%) Linux Systems Engineer
3 5 (25.00%) Systems Engineer
4 3 (15.00%) Administrator
4 3 (15.00%) Systems Administrator
5 2 (10.00%) Linux Administrator
5 2 (10.00%) Linux Systems Administrator
6 1 (5.00%) Architect
6 1 (5.00%) Consultant
6 1 (5.00%) DevOps Consultant
6 1 (5.00%) Junior
6 1 (5.00%) Junior DevOps
6 1 (5.00%) Junior DevOps Engineer
6 1 (5.00%) Systems Architect
Libraries, Frameworks & Software Standards
1 11 (55.00%) Elastic Stack
1 11 (55.00%) MCollective
2 10 (50.00%) REST
3 5 (25.00%) Memcached
4 2 (10.00%) LAMP
5 1 (5.00%) .NET
5 1 (5.00%) Software Packaging
Miscellaneous
1 10 (50.00%) Linux Command Line
2 6 (30.00%) Data Centre
3 1 (5.00%) Fintech
Operating Systems
1 20 (100.00%) Linux
2 11 (55.00%) CentOS
3 1 (5.00%) Debian
3 1 (5.00%) Ubuntu
3 1 (5.00%) Windows
Processes & Methodologies
1 15 (75.00%) Service Management
2 12 (60.00%) Agile Software Development
2 12 (60.00%) Configuration Management
2 12 (60.00%) Continuous Delivery
2 12 (60.00%) Continuous Integration
2 12 (60.00%) DevOps
3 11 (55.00%) Scrum
3 11 (55.00%) Stakeholder Management
4 10 (50.00%) Coaching
4 10 (50.00%) Load Balancing
5 4 (20.00%) High Availability
6 3 (15.00%) Identity Management
7 1 (5.00%) Case Management
7 1 (5.00%) Continuous Deployment
7 1 (5.00%) Disaster Recovery
7 1 (5.00%) E-Commerce
7 1 (5.00%) Infrastructure Management
7 1 (5.00%) Microservices
7 1 (5.00%) Workflow
Programming Languages
1 15 (75.00%) Bash Shell
2 10 (50.00%) Groovy
2 10 (50.00%) Java
3 7 (35.00%) Perl
3 7 (35.00%) PHP
4 2 (10.00%) PowerShell
4 2 (10.00%) Python
5 1 (5.00%) Ruby
5 1 (5.00%) Shell Script
5 1 (5.00%) SQL
Qualifications
1 9 (45.00%) Security Cleared
2 8 (40.00%) SC Cleared
3 3 (15.00%) DV Cleared
4 1 (5.00%) BPSS Clearance
4 1 (5.00%) CTC Cleared
4 1 (5.00%) Degree
4 1 (5.00%) Master's Degree
Quality Assurance & Compliance
1 1 (5.00%) PCI DSS
System Software
1 16 (80.00%) Squid
2 12 (60.00%) Docker
3 11 (55.00%) vCloud
4 10 (50.00%) Virtual Machines
5 6 (30.00%) iptables
6 5 (25.00%) Varnish
7 2 (10.00%) Active Directory
8 1 (5.00%) Xen
Systems Management
1 14 (70.00%) Ansible
2 12 (60.00%) Puppet
3 11 (55.00%) Docker Swarm
3 11 (55.00%) Kibana
3 11 (55.00%) Kubernetes
3 11 (55.00%) logstash
3 11 (55.00%) Rancher
3 11 (55.00%) Terraform
3 11 (55.00%) ZABBIX
4 10 (50.00%) Rsyslog
4 10 (50.00%) Sysdig
5 5 (25.00%) Nagios
6 2 (10.00%) FreeIPA
6 2 (10.00%) HAProxy
6 2 (10.00%) Red Hat Spacewalk
7 1 (5.00%) Icinga
7 1 (5.00%) Opscode Chef
Vendors
1 13 (65.00%) VMware
2 11 (55.00%) Sonatype
3 3 (15.00%) Cisco
4 2 (10.00%) BT
4 2 (10.00%) SolarWinds
5 1 (5.00%) Fortinet
5 1 (5.00%) New Relic
5 1 (5.00%) Oracle