The following table provides summary statistics for permanent job vacancies with a requirement for Postfix skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Postfix over the 3 months to 27 June 2017 with a comparison to the same period in the previous 2 years.

Postfix
UK
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 849 894 921
Rank change year-on-year +45 +27  
Permanent jobs citing Postfix 41 38 61
As % of all permanent IT jobs advertised in the UK 0.046% 0.039% 0.056%
As % of the System Software category 0.36% 0.30% 0.48%
Number of salaries quoted 24 26 56
Median salary £40,000 £45,000 £46,500
Median salary % change year-on-year -11.11% -3.22%  
90% offered a salary of more than £36,500 £32,500 £37,500
10% offered a salary of more than £80,500 £55,000 £70,000
UK excluding London median salary £40,000 £35,000 £45,000
% change year-on-year +14.28% -22.22%  

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

System Software Skills
UK
Permanent job vacancies with a requirement for system software skills 11479 12542 12812
As % of all permanent IT job vacancies advertised in the UK 12.88% 12.74% 11.71%
Number of salaries quoted 9736 10695 10605
Median salary £44,000 £42,500 £41,000
Median salary % change year-on-year +3.52% +3.65%  
90% offered a salary of more than £26,000 £25,000 £25,000
10% offered a salary of more than £70,000 £65,000 £67,500
UK excluding London median salary £38,000 £39,000 £37,500
% change year-on-year -2.56% +4.00%  

Postfix
Job Vacancy Trend

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

Job vacancy trend for Postfix in the UK

Postfix
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Postfix.

Salary trend for Postfix in the UK

Postfix
Salary Histogram

The salary distribution of IT jobs citing Postfix over the 3 months to 27 June 2017.

Salary histogram for Postfix in the UK

Postfix
Top 20 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Postfix 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
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +47 40 £40,000 -11.11% 4
London +39 21 £45,000 -10.00%
South West +3 8 £38,750 +10.71%
Gloucestershire +1 7 £40,000 +14.28%
Gloucester +7 6 £38,750 +10.71%
South East +38 5 £85,000 +112.50% 2
West Midlands - 5 £37,500 -
Berkshire +26 3 £90,000 +89.47%
Malvern - 3 £40,000 -
Slough - 3 £90,000 -
Worcestershire - 3 £40,000 -
Hampshire +10 2 £40,000 +14.28% 1
Southampton +7 2 £40,000 +14.28% 1
Coventry - 2 £36,500 -
City of London +29 1 £45,000 -10.00%
East of England -14 1 £30,000 -7.69% 1
Bath - 1 £30,000 -
Cheltenham - 1 £40,000 -
Somerset - 1 £30,000 -
Suffolk - 1 £30,000 -

For the 6 months to 27 June 2017, IT jobs citing Postfix also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for Postfix.

1 42 (71.19%) Linux
2 35 (59.32%) Windows
3 33 (55.93%) MySQL
4 31 (52.54%) Apache
4 31 (52.54%) Red Hat
5 28 (47.46%) Windows Server
6 27 (45.76%) Puppet
7 23 (38.98%) Bash Shell
7 23 (38.98%) Python
7 23 (38.98%) Perl
8 22 (37.29%) SharePoint
8 22 (37.29%) Active Directory
8 22 (37.29%) CentOS
9 21 (35.59%) Microsoft
9 21 (35.59%) SMTP
9 21 (35.59%) VMware
10 20 (33.90%) MS Exchange
10 20 (33.90%) Amazon AWS
11 19 (32.20%) nginx
11 19 (32.20%) Exchange Server 2010
11 19 (32.20%) Analytical Skills
11 19 (32.20%) Microsoft Office
12 18 (30.51%) DNS
12 18 (30.51%) Workflow
12 18 (30.51%) Agile Software Development
13 17 (28.81%) Banking
13 17 (28.81%) Retail
13 17 (28.81%) Asset Management
13 17 (28.81%) Investment Banking
13 17 (28.81%) Document Management

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 31 (52.54%) Apache
2 22 (37.29%) SharePoint
3 20 (33.90%) MS Exchange
4 19 (32.20%) Exchange Server 2010
4 19 (32.20%) nginx
5 17 (28.81%) SharePoint Server
6 2 (3.39%) Elasticsearch
6 2 (3.39%) Exchange Server 2013
6 2 (3.39%) IIS
6 2 (3.39%) Skype for Business
6 2 (3.39%) Tomcat
7 1 (1.69%) Exchange Server 2007
7 1 (1.69%) JBoss
7 1 (1.69%) Jetty
7 1 (1.69%) lighttpd
7 1 (1.69%) SAS
Applications
1 19 (32.20%) Microsoft Office
Cloud Services
1 20 (33.90%) Amazon AWS
2 13 (22.03%) OpenShift
3 9 (15.25%) PaaS
4 4 (6.78%) SaaS
5 2 (3.39%) Google Cloud Platform
6 1 (1.69%) Microsoft Azure
Communications & Networking
1 21 (35.59%) SMTP
2 18 (30.51%) DNS
3 10 (16.95%) VPN
4 9 (15.25%) TCP/IP
5 8 (13.56%) Firewall
6 6 (10.17%) SSH
7 5 (8.47%) FTP
8 4 (6.78%) HTTPS
8 4 (6.78%) IMAP
8 4 (6.78%) Reverse Proxy
9 3 (5.08%) MRTG
9 3 (5.08%) Network Security
10 2 (3.39%) Cisco Nexus
10 2 (3.39%) DHCP
10 2 (3.39%) HTTP
10 2 (3.39%) Internet
10 2 (3.39%) SAN
10 2 (3.39%) Skype
10 2 (3.39%) Telnet
10 2 (3.39%) VLAN
Database & Business Intelligence
1 33 (55.93%) MySQL
2 6 (10.17%) MariaDB
3 4 (6.78%) PostgreSQL
3 4 (6.78%) Redis
4 1 (1.69%) Couchbase
4 1 (1.69%) InfluxDB
4 1 (1.69%) SQL Server
Development Applications
1 9 (15.25%) Git (software)
2 7 (11.86%) Jenkins
3 4 (6.78%) Subversion
4 3 (5.08%) TeamCity
5 1 (1.69%) Ant
5 1 (1.69%) Bitbucket
5 1 (1.69%) Maven
5 1 (1.69%) NUnit
5 1 (1.69%) Octopus Deploy
5 1 (1.69%) QUnit
5 1 (1.69%) Selenium
General
1 17 (28.81%) Banking
1 17 (28.81%) Finance
1 17 (28.81%) Investment Banking
1 17 (28.81%) Retail
1 17 (28.81%) Retail Banking
2 2 (3.39%) French Language
2 2 (3.39%) Telecoms
3 1 (1.69%) Marketing
Job Titles
1 23 (38.98%) Linux Engineer
2 17 (28.81%) Administrator
2 17 (28.81%) Systems Administrator
2 17 (28.81%) Team Leader
3 16 (27.12%) Linux Systems Engineer
3 16 (27.12%) Systems Engineer
4 13 (22.03%) Linux Administrator
4 13 (22.03%) Linux Systems Administrator
5 6 (10.17%) Linux/Unix DevOps
6 5 (8.47%) DevOps Engineer
7 4 (6.78%) Linux DevOps Engineer
8 3 (5.08%) DevOps Administrator
8 3 (5.08%) Linux DevOps Administrator
8 3 (5.08%) Senior Linux Administrator
8 3 (5.08%) Senior Linux Systems Administrator
8 3 (5.08%) Senior Systems Administrator
9 2 (3.39%) Senior Linux Engineer
9 2 (3.39%) Senior Systems Engineer
9 2 (3.39%) Unix Administrator
9 2 (3.39%) Unix Systems Administrator
Libraries, Frameworks & Software Standards
1 16 (27.12%) LAMP
2 11 (18.64%) LEMP Stack
3 2 (3.39%) HTML
3 2 (3.39%) RabbitMQ
4 1 (1.69%) .NET
4 1 (1.69%) Dropwizard
4 1 (1.69%) Java EE
4 1 (1.69%) JMX
4 1 (1.69%) LAPP Stack
4 1 (1.69%) Swagger
4 1 (1.69%) Web Services
Miscellaneous
1 19 (32.20%) Analytical Skills
2 3 (5.08%) Clustering
2 3 (5.08%) Linux Command Line
3 2 (3.39%) Data Centre
3 2 (3.39%) Replication
4 1 (1.69%) Digital Media
Operating Systems
1 42 (71.19%) Linux
2 35 (59.32%) Windows
3 28 (47.46%) Windows Server
4 22 (37.29%) CentOS
5 14 (23.73%) Red Hat Enterprise Linux
6 10 (16.95%) Ubuntu
7 9 (15.25%) Debian
8 8 (13.56%) Fedora
9 7 (11.86%) Unix
10 4 (6.78%) FreeBSD
11 3 (5.08%) Windows Server 2008
12 2 (3.39%) Windows 10
12 2 (3.39%) Windows 7
12 2 (3.39%) Windows 8
12 2 (3.39%) Windows Server 2012
13 1 (1.69%) Android
13 1 (1.69%) Apple iOS
13 1 (1.69%) OpenBSD
13 1 (1.69%) Windows Phone
Processes & Methodologies
1 18 (30.51%) Agile Software Development
1 18 (30.51%) Workflow
2 17 (28.81%) Asset Management
2 17 (28.81%) Document Management
2 17 (28.81%) Root Cause Analysis
2 17 (28.81%) Task Automation
2 17 (28.81%) Wealth Management
3 15 (25.42%) DevOps
4 11 (18.64%) Configuration Management
5 5 (8.47%) Change Control
5 5 (8.47%) ITIL
6 4 (6.78%) Network Design
7 3 (5.08%) Analytics
7 3 (5.08%) Cybersecurity
7 3 (5.08%) Line Management
7 3 (5.08%) Load Balancing
7 3 (5.08%) Server Hardening
7 3 (5.08%) Service Delivery
7 3 (5.08%) Stakeholder Management
8 2 (3.39%) Mentoring
Programming Languages
1 23 (38.98%) Bash Shell
1 23 (38.98%) Perl
1 23 (38.98%) Python
2 17 (28.81%) PowerShell
3 12 (20.34%) PHP
4 6 (10.17%) SQL
5 3 (5.08%) Shell Script
6 2 (3.39%) Java
7 1 (1.69%) C
7 1 (1.69%) C#
Qualifications
1 5 (8.47%) RHCE
2 2 (3.39%) RHCSA
2 2 (3.39%) SC Cleared
2 2 (3.39%) Security Cleared
2 2 (3.39%) VMware Certified Professional (VCP)
3 1 (1.69%) CCNA
3 1 (1.69%) Cisco Certification
3 1 (1.69%) CISM
3 1 (1.69%) CISSP
3 1 (1.69%) MCSE
3 1 (1.69%) Microsoft Certification
Quality Assurance & Compliance
1 1 (1.69%) GDPR
1 1 (1.69%) ISO/IEC 27001
1 1 (1.69%) PCI DSS
System Software
1 22 (37.29%) Active Directory
2 15 (25.42%) Dovecot
2 15 (25.42%) VMware Infrastructure
3 14 (23.73%) Docker
4 5 (8.47%) NFS
5 4 (6.78%) Ceph
5 4 (6.78%) Squid
6 3 (5.08%) Hyper-V
6 3 (5.08%) iptables
6 3 (5.08%) qmail
6 3 (5.08%) Sendmail
6 3 (5.08%) SpamAssassin
7 2 (3.39%) Microsoft Virtual Server
7 2 (3.39%) Virtual Servers
7 2 (3.39%) VMware ESXi
7 2 (3.39%) vSphere
8 1 (1.69%) oVirt
8 1 (1.69%) PowerDNS
8 1 (1.69%) Varnish
8 1 (1.69%) Xen
Systems Management
1 27 (45.76%) Puppet
2 14 (23.73%) Nagios
3 10 (16.95%) Ansible
4 9 (15.25%) HAProxy
5 6 (10.17%) Kubernetes
5 6 (10.17%) Opscode Chef
6 4 (6.78%) Galera Cluster
7 3 (5.08%) Munin
7 3 (5.08%) Red Hat Spacewalk
7 3 (5.08%) SELinux
8 2 (3.39%) Backup Exec
8 2 (3.39%) Cacti
8 2 (3.39%) logstash
8 2 (3.39%) SCCM
8 2 (3.39%) Simpana
9 1 (1.69%) Bacula
9 1 (1.69%) Business Desktop Deployment
9 1 (1.69%) Icinga
9 1 (1.69%) ZABBIX
Vendors
1 31 (52.54%) Red Hat
2 21 (35.59%) Microsoft
2 21 (35.59%) VMware
3 5 (8.47%) Cisco
4 4 (6.78%) Scality
5 3 (5.08%) Rackspace
6 2 (3.39%) CommVault
6 2 (3.39%) Dell
6 2 (3.39%) EMC
6 2 (3.39%) F5
6 2 (3.39%) Google
6 2 (3.39%) HP
6 2 (3.39%) NetApp
6 2 (3.39%) Veritas
7 1 (1.69%) New Relic
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