Period
to 21 September 2018

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 6 months to 21 September 2018 with a comparison to the same period in the previous 2 years.

Postfix
England > London
6 months to
21 Sep 2018
Same period 2017 Same period 2016
Rank 810 842 829
Rank change year-on-year +32 -13 +36
Permanent jobs citing Postfix 7 26 35
As % of all permanent IT jobs advertised in London 0.010% 0.035% 0.044%
As % of the System Software category 0.066% 0.26% 0.35%
Number of salaries quoted 7 8 23
London median annual salary £57,500 £47,500 £55,000
Median salary % change year-on-year +21.05% -13.64% +15.79%
10th Percentile £56,050 £39,500 £41,750
90th Percentile £58,750 £69,125 £67,250
England median annual salary £56,500 £40,000 £45,000
% change year-on-year +41.25% -11.11% -5.26%

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 London with a requirement for system software skills.

All System Software Skills
London
Permanent vacancies with a requirement for system software skills 10,623 9,937 9,894
As % of all permanent IT jobs advertised in London 15.45% 13.27% 12.48%
Number of salaries quoted 8,922 8,444 8,628
London median annual salary £60,000 £55,000 £50,000
Median salary % change year-on-year +9.09% +10.00% +11.11%
10th Percentile £29,000 £28,000 £26,500
90th Percentile £91,175 £85,000 £80,000
England median annual salary £50,000 £45,000 £42,500
% change year-on-year +11.11% +5.88% +6.25%

Postfix
Job Vacancy Trend in London

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

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

For the 6 months to 21 September 2018, IT jobs citing Postfix also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the London region with a requirement for Postfix.

1 7 (100.00%) Unix
1 7 (100.00%) Linux
1 7 (100.00%) Apache
1 7 (100.00%) CentOS
2 6 (85.71%) Open Source
2 6 (85.71%) OpenBSD
2 6 (85.71%) Subversion
2 6 (85.71%) VPN
2 6 (85.71%) Firewall
2 6 (85.71%) New Media
2 6 (85.71%) Problem-Solving
3 1 (14.29%) Red Hat Enterprise Linux
3 1 (14.29%) vSphere
3 1 (14.29%) Bash Shell
3 1 (14.29%) Puppet
3 1 (14.29%) MongoDB
3 1 (14.29%) Dovecot
3 1 (14.29%) High Availability
3 1 (14.29%) Load Balancing
3 1 (14.29%) Reverse Proxy
3 1 (14.29%) PostgreSQL
3 1 (14.29%) VMware
3 1 (14.29%) Clustering
3 1 (14.29%) Publishing
3 1 (14.29%) LAMP
3 1 (14.29%) Cisco
3 1 (14.29%) Active Directory
3 1 (14.29%) NetApp
3 1 (14.29%) Red Hat
3 1 (14.29%) Python

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 7 (100.00%) Apache
Communications & Networking
1 6 (85.71%) Firewall
1 6 (85.71%) VPN
2 1 (14.29%) Kerberos
2 1 (14.29%) Reverse Proxy
Database & Business Intelligence
1 1 (14.29%) MongoDB
1 1 (14.29%) MySQL
1 1 (14.29%) PostgreSQL
Development Applications
1 6 (85.71%) Subversion
General
1 1 (14.29%) Publishing
Job Titles
1 6 (85.71%) Administrator
1 6 (85.71%) Linux Administrator
1 6 (85.71%) Linux Systems Administrator
1 6 (85.71%) Systems Administrator
2 5 (71.43%) Unix Administrator
2 5 (71.43%) Unix Linux Systems Administrator
2 5 (71.43%) Unix Systems Administrator
3 1 (14.29%) Infrastructure Engineer
3 1 (14.29%) Linux Engineer
3 1 (14.29%) Linux Infrastructure Engineer
3 1 (14.29%) Storage Engineer
3 1 (14.29%) Unix Engineer
3 1 (14.29%) Unix Infrastructure Engineer
3 1 (14.29%) Unix Linux Engineer
Libraries, Frameworks & Software Standards
1 1 (14.29%) Anaconda
1 1 (14.29%) LAMP
1 1 (14.29%) LAPP Stack
1 1 (14.29%) LDAP
Miscellaneous
1 6 (85.71%) New Media
2 1 (14.29%) Clustering
Operating Systems
1 7 (100.00%) CentOS
1 7 (100.00%) Linux
1 7 (100.00%) Unix
2 6 (85.71%) OpenBSD
3 1 (14.29%) Red Hat Enterprise Linux
3 1 (14.29%) Solaris
Processes & Methodologies
1 6 (85.71%) Open Source
1 6 (85.71%) Problem-Solving
2 1 (14.29%) High Availability
2 1 (14.29%) Infrastructure Engineering
2 1 (14.29%) Load Balancing
Programming Languages
1 1 (14.29%) Bash Shell
1 1 (14.29%) Perl
1 1 (14.29%) Python
System Software
1 1 (14.29%) Active Directory
1 1 (14.29%) Dovecot
1 1 (14.29%) vSphere
Systems Management
1 1 (14.29%) Cobbler
1 1 (14.29%) Galera Cluster
1 1 (14.29%) HAProxy
1 1 (14.29%) Puppet
Vendors
1 1 (14.29%) Cisco
1 1 (14.29%) NetApp
1 1 (14.29%) Red Hat
1 1 (14.29%) VMware