Period
to 19 November 2017

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Postfix skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Postfix over the 6 months to 19 November 2017 with a comparison to the same period in the previous 2 years.

Postfix
Central London > City of London
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 321 349 415
Rank change year-on-year +28 +66 +58
Permanent jobs citing Postfix 1 1 14
As % of all permanent IT jobs advertised in the City of London 0.010% 0.009% 0.081%
As % of the System Software category 0.069% 0.073% 0.84%
Number of salaries quoted 1 1 14
City of London median annual salary £45,000 £50,000 £70,000
Median salary % change year-on-year -10.00% -28.57% +16.67%
10th Percentile £42,500 £50,000 £45,225
90th Percentile £47,500 £50,000 £76,050
Central London median annual salary £45,000 £50,000 £70,000
% change year-on-year -10.00% -28.57% +16.67%

Postfix is in the System Software category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for system software skills.

All System Software Skills
City of London
Permanent vacancies with a requirement for system software skills 1451 1376 1674
As % of all permanent IT jobs advertised in the City of London 14.32% 11.84% 9.74%
Number of salaries quoted 1341 1253 1455
City of London median annual salary £55,000 £52,500 £47,000
Median salary % change year-on-year +4.76% +11.70% -1.05%
10th Percentile £30,000 £28,500 £26,250
90th Percentile £85,000 £78,750 £73,750
Central London median annual salary £55,000 £50,000 £45,000
% change year-on-year +10.00% +11.11% -

Postfix
Job Vacancy Trend in the City of London

Job postings citing Postfix as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Postfix in the City of London

Postfix
Salary Trend in the City of London

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

Salary trend for Postfix in the City of London

For the 6 months to 19 November 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 City of London region with a requirement for Postfix.

1 1 (100.00%) C
1 1 (100.00%) Perl
1 1 (100.00%) PHP
1 1 (100.00%) MySQL
1 1 (100.00%) Unix
1 1 (100.00%) Linux
1 1 (100.00%) Apache
1 1 (100.00%) FreeBSD
1 1 (100.00%) DNS
1 1 (100.00%) Red Hat
1 1 (100.00%) Nagios
1 1 (100.00%) Configuration Management
1 1 (100.00%) LAMP
1 1 (100.00%) VMware
1 1 (100.00%) Xen
1 1 (100.00%) VMware Infrastructure
1 1 (100.00%) CentOS
1 1 (100.00%) Red Hat Enterprise Linux
1 1 (100.00%) Munin
1 1 (100.00%) Puppet
1 1 (100.00%) MRTG
1 1 (100.00%) Analytics
1 1 (100.00%) KVM
1 1 (100.00%) oVirt
1 1 (100.00%) PowerDNS

Postfix
Co-occurring IT Skills in the City of 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 1 (100.00%) Apache
Communications & Networking
1 1 (100.00%) DNS
1 1 (100.00%) MRTG
Database & Business Intelligence
1 1 (100.00%) MySQL
Job Titles
1 1 (100.00%) Administrator
1 1 (100.00%) Systems Administrator
Libraries, Frameworks & Software Standards
1 1 (100.00%) LAMP
Operating Systems
1 1 (100.00%) CentOS
1 1 (100.00%) FreeBSD
1 1 (100.00%) Linux
1 1 (100.00%) Red Hat Enterprise Linux
1 1 (100.00%) Unix
Processes & Methodologies
1 1 (100.00%) Analytics
1 1 (100.00%) Configuration Management
Programming Languages
1 1 (100.00%) C
1 1 (100.00%) Perl
1 1 (100.00%) PHP
System Software
1 1 (100.00%) KVM
1 1 (100.00%) oVirt
1 1 (100.00%) PowerDNS
1 1 (100.00%) VMware Infrastructure
1 1 (100.00%) Xen
Systems Management
1 1 (100.00%) Munin
1 1 (100.00%) Nagios
1 1 (100.00%) Puppet
Vendors
1 1 (100.00%) Red Hat
1 1 (100.00%) VMware