Period
to 20 July 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 20 July 2018 with a comparison to the same period in the previous 2 years.

Postfix
England > London
6 months to
20 Jul 2018
Same period 2017 Same period 2016
Rank 816 813 869
Rank change year-on-year -3 +56 -7
Permanent jobs citing Postfix 9 23 45
As % of all permanent IT jobs advertised in London 0.013% 0.031% 0.054%
As % of the System Software category 0.083% 0.24% 0.43%
Number of salaries quoted 9 5 20
London median annual salary £57,500 £45,000 £53,750
Median salary % change year-on-year +27.78% -16.28% +13.16%
10th Percentile £56,150 £36,500 £40,000
90th Percentile £68,750 £61,000 £67,250
England median annual salary £50,000 £40,000 £47,500
% change year-on-year +25.00% -15.79% -

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 10,835 9,617 10,366
As % of all permanent IT jobs advertised in London 15.21% 13.14% 12.50%
Number of salaries quoted 9,026 8,207 9,074
London median annual salary £57,500 £55,000 £50,000
Median salary % change year-on-year +4.55% +10.00% +8.70%
10th Percentile £29,000 £27,750 £26,250
90th Percentile £90,000 £83,750 £77,500
England median annual salary £47,500 £44,000 £42,500
% change year-on-year +7.95% +3.53% +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 20 July 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 9 (100.00%) Linux
2 8 (88.89%) Subversion
3 7 (77.78%) CentOS
3 7 (77.78%) Apache
3 7 (77.78%) Unix
4 6 (66.67%) VPN
4 6 (66.67%) Firewall
4 6 (66.67%) OpenBSD
4 6 (66.67%) Open Source
4 6 (66.67%) New Media
4 6 (66.67%) Problem-Solving
5 3 (33.33%) VMware
5 3 (33.33%) Bash Shell
5 3 (33.33%) Puppet
5 3 (33.33%) Cisco
5 3 (33.33%) MySQL
5 3 (33.33%) Perl
5 3 (33.33%) Python
5 3 (33.33%) HAProxy
6 2 (22.22%) DevOps
6 2 (22.22%) PHP-FPM
6 2 (22.22%) Private Cloud
6 2 (22.22%) BIND 9
6 2 (22.22%) LEMP Stack
6 2 (22.22%) Kamailio
6 2 (22.22%) WSGI
6 2 (22.22%) MariaDB
6 2 (22.22%) uWSGI
6 2 (22.22%) Linux Command Line
6 2 (22.22%) PHP

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 (77.78%) Apache
2 2 (22.22%) Confluence
2 2 (22.22%) nginx
2 2 (22.22%) uWSGI
Communications & Networking
1 6 (66.67%) Firewall
1 6 (66.67%) VPN
2 2 (22.22%) BGP
2 2 (22.22%) Cisco ASA
2 2 (22.22%) Cisco IOS
2 2 (22.22%) DNS
2 2 (22.22%) HTTP
2 2 (22.22%) SMTP
2 2 (22.22%) SNMP
2 2 (22.22%) SSL
2 2 (22.22%) VLAN
2 2 (22.22%) VoIP
3 1 (11.11%) Kerberos
3 1 (11.11%) Reverse Proxy
Database & Business Intelligence
1 3 (33.33%) MySQL
2 2 (22.22%) MariaDB
3 1 (11.11%) MongoDB
3 1 (11.11%) PostgreSQL
Development Applications
1 8 (88.89%) Subversion
2 2 (22.22%) Git (software)
2 2 (22.22%) JIRA
General
1 2 (22.22%) Telecoms
2 1 (11.11%) Publishing
Job Titles
1 6 (66.67%) Administrator
1 6 (66.67%) Linux Administrator
1 6 (66.67%) Linux Systems Administrator
1 6 (66.67%) Systems Administrator
2 5 (55.56%) Unix Administrator
2 5 (55.56%) Unix Linux Systems Administrator
2 5 (55.56%) Unix Systems Administrator
3 3 (33.33%) Linux Engineer
4 2 (22.22%) DevOps Engineer
4 2 (22.22%) DevOps Systems Engineer
4 2 (22.22%) Linux DevOps Engineer
4 2 (22.22%) Linux Systems Engineer
4 2 (22.22%) Linux/Unix DevOps
4 2 (22.22%) Senior DevOps
4 2 (22.22%) Senior DevOps Engineer
4 2 (22.22%) Senior Linux Engineer
4 2 (22.22%) Senior Linux Systems Engineer
4 2 (22.22%) Senior Systems Engineer
4 2 (22.22%) Systems Engineer
5 1 (11.11%) Linux Infrastructure Engineer
Libraries, Frameworks & Software Standards
1 2 (22.22%) Django
1 2 (22.22%) FreeSWITCH
1 2 (22.22%) LEMP Stack
1 2 (22.22%) PHP-FPM
1 2 (22.22%) WSGI
2 1 (11.11%) Anaconda
2 1 (11.11%) LAMP
2 1 (11.11%) LAPP Stack
2 1 (11.11%) LDAP
Miscellaneous
1 6 (66.67%) New Media
2 2 (22.22%) Linux Command Line
2 2 (22.22%) Private Cloud
2 2 (22.22%) Replication
2 2 (22.22%) Wiki
3 1 (11.11%) Clustering
Operating Systems
1 9 (100.00%) Linux
2 7 (77.78%) CentOS
2 7 (77.78%) Unix
3 6 (66.67%) OpenBSD
4 2 (22.22%) Debian
4 2 (22.22%) Ubuntu
5 1 (11.11%) Red Hat Enterprise Linux
5 1 (11.11%) Solaris
Processes & Methodologies
1 6 (66.67%) Open Source
1 6 (66.67%) Problem-Solving
2 2 (22.22%) BCP
2 2 (22.22%) Configuration Management
2 2 (22.22%) DevOps
2 2 (22.22%) Release Management
3 1 (11.11%) High Availability
3 1 (11.11%) Load Balancing
Programming Languages
1 3 (33.33%) Bash Shell
1 3 (33.33%) Perl
1 3 (33.33%) Python
2 2 (22.22%) PHP
System Software
1 2 (22.22%) BIND 9
1 2 (22.22%) Kamailio
1 2 (22.22%) VMware ESXi
1 2 (22.22%) VMware Infrastructure
2 1 (11.11%) Active Directory
2 1 (11.11%) Dovecot
2 1 (11.11%) vSphere
Systems Management
1 3 (33.33%) HAProxy
1 3 (33.33%) Puppet
2 2 (22.22%) Cacti
2 2 (22.22%) Munin
2 2 (22.22%) Nagios
3 1 (11.11%) Cobbler
3 1 (11.11%) Galera Cluster
Vendors
1 3 (33.33%) Cisco
1 3 (33.33%) VMware
2 2 (22.22%) Dell
3 1 (11.11%) NetApp
3 1 (11.11%) Red Hat