The following table provides summary statistics for permanent job vacancies advertised in London 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 26 June 2017 with a comparison to the same period in the previous 2 years.

Postfix
England / London
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank 592 622 630
Rank change year-on-year +30 +8  
Permanent jobs citing Postfix 21 16 40
As % of all permanent IT jobs advertised in London 0.057% 0.041% 0.089%
As % of the System Software category 0.42% 0.31% 0.81%
Number of salaries quoted 5 7 39
Median salary £45,000 £50,000 £47,500
Median salary % change year-on-year -10.00% +5.26%  
90% offered a salary of more than £39,000 £36,000 £37,500
10% offered a salary of more than £60,000 £64,000 £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 advertised in London with a requirement for system software skills.

System Software Skills
London
Permanent job vacancies with a requirement for system software skills 5021 5098 4960
As % of all permanent IT job vacancies advertised in London 13.63% 12.92% 11.06%
Number of salaries quoted 4303 4474 4322
Median salary £55,000 £52,500 £47,500
Median salary % change year-on-year +4.76% +10.52%  
90% offered a salary of more than £30,000 £30,000 £29,500
10% offered a salary of more than £77,500 £72,500 £75,000
UK excluding London median salary £38,000 £39,000 £37,500
% change year-on-year -2.56% +4.00%  

Postfix
Job Vacancy Trend in London

The job posting trend of jobs advertised in London 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 London

Postfix
Salary Trend in London

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

Salary trend for Postfix in London

Postfix
Salary Histogram in London

The salary distribution of IT jobs citing Postfix in London over the 3 months to 26 June 2017.

Salary histogram for Postfix in London

Postfix
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Postfix within the London region over the 3 months to 26 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
City of London +25 1 £45,000 -10.00%
Postfix
England

For the 6 months to 26 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 across the London region with a requirement for Postfix.

1 17 (77.27%) Windows
1 17 (77.27%) SharePoint
1 17 (77.27%) MS Exchange
1 17 (77.27%) SMTP
1 17 (77.27%) Microsoft
1 17 (77.27%) Active Directory
1 17 (77.27%) Agile Software Development
1 17 (77.27%) Exchange Server 2010
2 16 (72.73%) Root Cause Analysis
2 16 (72.73%) PowerShell
2 16 (72.73%) Amazon AWS
2 16 (72.73%) Analytical Skills
2 16 (72.73%) Windows Server
2 16 (72.73%) Task Automation
2 16 (72.73%) Banking
2 16 (72.73%) Retail
2 16 (72.73%) Asset Management
2 16 (72.73%) Document Management
2 16 (72.73%) Investment Banking
2 16 (72.73%) SharePoint Server
2 16 (72.73%) Retail Banking
2 16 (72.73%) Wealth Management
2 16 (72.73%) Workflow
2 16 (72.73%) Finance
2 16 (72.73%) Microsoft Office
3 6 (27.27%) Linux
3 6 (27.27%) Apache
4 5 (22.73%) Unix
4 5 (22.73%) MySQL
4 5 (22.73%) Red Hat

Postfix
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 17 (77.27%) Exchange Server 2010
1 17 (77.27%) MS Exchange
1 17 (77.27%) SharePoint
2 16 (72.73%) SharePoint Server
3 6 (27.27%) Apache
4 1 (4.55%) Exchange Server 2013
4 1 (4.55%) Jetty
4 1 (4.55%) Skype for Business
4 1 (4.55%) Tomcat
Applications
1 16 (72.73%) Microsoft Office
Cloud Services
1 16 (72.73%) Amazon AWS
Communications & Networking
1 17 (77.27%) SMTP
2 4 (18.18%) DNS
3 3 (13.64%) MRTG
3 3 (13.64%) VPN
4 2 (9.09%) Firewall
5 1 (4.55%) OpenVPN
5 1 (4.55%) Skype
5 1 (4.55%) VLAN
Database & Business Intelligence
1 5 (22.73%) MySQL
2 1 (4.55%) Couchbase
Development Applications
1 1 (4.55%) Bitbucket
1 1 (4.55%) Git (software)
1 1 (4.55%) Jenkins
1 1 (4.55%) Subversion
General
1 16 (72.73%) Banking
1 16 (72.73%) Finance
1 16 (72.73%) Investment Banking
1 16 (72.73%) Retail
1 16 (72.73%) Retail Banking
2 2 (9.09%) Telecoms
3 1 (4.55%) Marketing
Job Titles
1 16 (72.73%) Team Leader
2 4 (18.18%) Administrator
2 4 (18.18%) Systems Administrator
3 2 (9.09%) DevOps Administrator
3 2 (9.09%) Linux Administrator
3 2 (9.09%) Linux DevOps Administrator
3 2 (9.09%) Linux Systems Administrator
3 2 (9.09%) Linux/Unix DevOps
4 1 (4.55%) 2nd Line Support
4 1 (4.55%) Information Manager
4 1 (4.55%) Information Security Manager
4 1 (4.55%) Junior
4 1 (4.55%) Junior Systems Administrator
4 1 (4.55%) Security Manager
Libraries, Frameworks & Software Standards
1 2 (9.09%) LAMP
2 1 (4.55%) Dropwizard
2 1 (4.55%) Java EE
2 1 (4.55%) JMX
2 1 (4.55%) Swagger
Miscellaneous
1 16 (72.73%) Analytical Skills
2 1 (4.55%) Clustering
Operating Systems
1 17 (77.27%) Windows
2 16 (72.73%) Windows Server
3 6 (27.27%) Linux
4 5 (22.73%) Unix
5 3 (13.64%) FreeBSD
5 3 (13.64%) Red Hat Enterprise Linux
6 2 (9.09%) CentOS
7 1 (4.55%) Debian
7 1 (4.55%) OpenBSD
7 1 (4.55%) Ubuntu
7 1 (4.55%) Windows 10
7 1 (4.55%) Windows 7
7 1 (4.55%) Windows 8
Processes & Methodologies
1 17 (77.27%) Agile Software Development
2 16 (72.73%) Asset Management
2 16 (72.73%) Document Management
2 16 (72.73%) Root Cause Analysis
2 16 (72.73%) Task Automation
2 16 (72.73%) Wealth Management
2 16 (72.73%) Workflow
3 3 (13.64%) Analytics
3 3 (13.64%) DevOps
4 2 (9.09%) Open Source
5 1 (4.55%) Configuration Management
5 1 (4.55%) Data Protection
5 1 (4.55%) Digital Marketing
5 1 (4.55%) Information Security
5 1 (4.55%) Migration
5 1 (4.55%) Time Management
Programming Languages
1 16 (72.73%) PowerShell
2 1 (4.55%) Bash Shell
2 1 (4.55%) C
2 1 (4.55%) Java
2 1 (4.55%) Perl
2 1 (4.55%) PHP
2 1 (4.55%) Python
2 1 (4.55%) SQL
Qualifications
1 1 (4.55%) CISM
1 1 (4.55%) CISSP
Quality Assurance & Compliance
1 1 (4.55%) GDPR
1 1 (4.55%) ISO/IEC 27001
1 1 (4.55%) PCI DSS
System Software
1 17 (77.27%) Active Directory
2 2 (9.09%) Squid
2 2 (9.09%) VMware Infrastructure
3 1 (4.55%) Corosync
3 1 (4.55%) Hyper-V
3 1 (4.55%) KVM
3 1 (4.55%) Microsoft Virtual Server
3 1 (4.55%) NFS
3 1 (4.55%) oVirt
3 1 (4.55%) PowerDNS
3 1 (4.55%) Virtual Servers
3 1 (4.55%) vSphere
3 1 (4.55%) Xen
Systems Management
1 3 (13.64%) Munin
1 3 (13.64%) Nagios
1 3 (13.64%) Puppet
2 1 (4.55%) Backup Exec
2 1 (4.55%) Bacula
2 1 (4.55%) HAProxy
2 1 (4.55%) ZABBIX
Vendors
1 17 (77.27%) Microsoft
2 5 (22.73%) Red Hat
3 2 (9.09%) VMware
4 1 (4.55%) Cisco
4 1 (4.55%) Dell
4 1 (4.55%) EMC
4 1 (4.55%) HP
4 1 (4.55%) NetApp
4 1 (4.55%) Veritas