Job Vacancy Trend Salary Trend Salary Histogram Job Locations Skill Sets
Period
to 14 May 2021

The following table provides summary statistics for permanent job vacancies advertised in England 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 14 May 2021 with a comparison to the same period in the previous 2 years.

Postfix
UK > England
6 months to
14 May 2021		 Same period 2020 Same period 2019
Rank 822 869 1016
Rank change year-on-year +47 +147 +109
Permanent jobs citing Postfix 32 21 57
As % of all permanent jobs advertised in England 0.040% 0.023% 0.043%
As % of the System Software category 0.21% 0.13% 0.26%
Number of salaries quoted 26 20 43
10th Percentile £33,750 £49,825 £48,750
25th Percentile £41,250 £60,000 £52,250
Median annual salary (50th Percentile) £43,750 £71,250 £60,000
Median % change year-on-year -38.60% +18.75% +20.00%
75th Percentile £64,063 £77,500 £63,750
90th Percentile £73,125 " £75,000
UK median annual salary £50,000 £70,000 £60,000
% change year-on-year -28.57% +16.67% +20.00%

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 England with a requirement for system software skills.

All System Software Skills
England
Permanent vacancies with a requirement for system software skills 15,245 15,646 22,347
As % of all permanent IT jobs advertised in England 18.97% 17.44% 16.71%
Number of salaries quoted 12,131 12,973 18,403
10th Percentile £30,000 £27,000 £26,000
25th Percentile £40,000 £36,250 £34,000
Median annual salary (50th Percentile) £55,000 £52,500 £50,000
Median % change year-on-year +4.76% +5.00% +5.26%
75th Percentile £75,000 £72,500 £68,750
90th Percentile £91,250 £87,500 £85,000
UK median annual salary £55,000 £52,500 £50,000
% change year-on-year +4.76% +5.00% +5.26%

Postfix
Job Vacancy Trend in England

Job postings citing Postfix as a proportion of all IT jobs advertised in England.

Job vacancy trend for Postfix in England

Postfix
Salary Trend in England

3-month moving average salary quoted in jobs citing Postfix in England.

Salary trend for Postfix in England

Postfix
Salary Histogram in England

Salary distribution for jobs citing Postfix in England over the 6 months to 14 May 2021.

Salary histogram for Postfix in England

Postfix
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Postfix within the England region over the 6 months to 14 May 2021. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year		 Matching
Permanent
IT Job Ads		 Median Salary
Past 6 Months		 Median Salary
% Change
on Same Period
Last Year		 Live
Job
Vacancies
London +73 23 £50,000 -33.33%
South East +39 5 £30,000 -54.72% 3
Midlands -12 2 £40,000 -46.67% 1
East Midlands - 2 £40,000 -
North of England -11 1 £52,500 -25.00% 1
East of England - 1 £70,000 -
North East - 1 £52,500 - 1
Postfix
UK

For the 6 months to 14 May 2021, 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 England region with a requirement for Postfix.

1 24 (75.00%) Linux
1 24 (75.00%) Bash Shell
2 21 (65.63%) Open Source
2 21 (65.63%) Continuous Integration
3 20 (62.50%) Apache
3 20 (62.50%) Ansible
4 18 (56.25%) Puppet
4 18 (56.25%) Microsoft
4 18 (56.25%) HP
5 17 (53.13%) Firewall
6 16 (50.00%) Windows
6 16 (50.00%) SQL Server
6 16 (50.00%) C
6 16 (50.00%) Perl
6 16 (50.00%) KVM
6 16 (50.00%) Data Centre
7 15 (46.88%) iptables
7 15 (46.88%) HAProxy
7 15 (46.88%) PHP
7 15 (46.88%) VPN
7 15 (46.88%) Debian
7 15 (46.88%) Internet
7 15 (46.88%) nginx
7 15 (46.88%) Degree
8 13 (40.63%) Load Balancing
8 13 (40.63%) Computer Science
8 13 (40.63%) SonicWALL
8 13 (40.63%) XMPP
8 13 (40.63%) Risk Assessment
8 13 (40.63%) Mitel

Postfix
Co-occurring IT Skills in England 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 20 (62.50%) Apache
2 15 (46.88%) nginx
3 13 (40.63%) ejabberd
3 13 (40.63%) IIS
3 13 (40.63%) Tomcat
4 2 (6.25%) JBoss
Cloud Services
1 13 (40.63%) AWS
2 8 (25.00%) Amazon EC2
3 5 (15.63%) Azure
4 3 (9.38%) Amazon SQS
4 3 (9.38%) AWS KMS
4 3 (9.38%) Datadog
4 3 (9.38%) IaaS
4 3 (9.38%) Slack
Communications & Networking
1 17 (53.13%) Firewall
2 15 (46.88%) Internet
2 15 (46.88%) VPN
3 13 (40.63%) Asterisk PBX
3 13 (40.63%) BGP
3 13 (40.63%) Diameter Protocol
3 13 (40.63%) LAN
3 13 (40.63%) PBX
3 13 (40.63%) SNMP
4 9 (28.13%) DNS
5 5 (15.63%) NAS
5 5 (15.63%) SAN
5 5 (15.63%) TCP/IP
6 4 (12.50%) DHCP
7 3 (9.38%) FTP
7 3 (9.38%) SSL
8 2 (6.25%) HTTPS
8 2 (6.25%) Network Security
8 2 (6.25%) Reverse Proxy
Database & Business Intelligence
1 16 (50.00%) SQL Server
2 11 (34.38%) PostgreSQL
3 3 (9.38%) Amazon RDS
4 2 (6.25%) RDBMS
4 2 (6.25%) Redis
4 2 (6.25%) Relational Database
Development Applications
1 10 (31.25%) Git (software)
2 8 (25.00%) DbUnit
2 8 (25.00%) Jenkins
2 8 (25.00%) jMock
2 8 (25.00%) JUnit
2 8 (25.00%) Maven
2 8 (25.00%) Mockito
2 8 (25.00%) SonarQube
3 3 (9.38%) Atlassian Bamboo
3 3 (9.38%) JIRA
General
1 13 (40.63%) Analytical Skills
1 13 (40.63%) Games
1 13 (40.63%) Organisational Skills
2 5 (15.63%) Public Sector
3 3 (9.38%) Retail
4 2 (6.25%) Local Government
4 2 (6.25%) Social Skills
Job Titles
1 13 (40.63%) Network Engineer
1 13 (40.63%) Network Systems Engineer
1 13 (40.63%) Systems Engineer
2 8 (25.00%) Developer
2 8 (25.00%) Java Developer
3 4 (12.50%) Linux Engineer
4 3 (9.38%) Full Stack Developer
4 3 (9.38%) Infrastructure Engineer
4 3 (9.38%) Linux Infrastructure Engineer
5 2 (6.25%) Administrator
5 2 (6.25%) Junior
5 2 (6.25%) Linux Administrator
5 2 (6.25%) Linux Systems Administrator
5 2 (6.25%) Platform Engineer
5 2 (6.25%) SC Cleared Java Developer
5 2 (6.25%) Systems Administrator
5 2 (6.25%) Unix Engineer
5 2 (6.25%) Unix Infrastructure Engineer
5 2 (6.25%) Unix Linux Engineer
6 1 (3.13%) Senior Linux Engineer
Libraries, Frameworks & Software Standards
1 13 (40.63%) XMPP
2 8 (25.00%) ActiveMQ
2 8 (25.00%) AngularJS
2 8 (25.00%) Hibernate
2 8 (25.00%) PowerMock
2 8 (25.00%) REST
2 8 (25.00%) RESTful
2 8 (25.00%) SOAP
2 8 (25.00%) Spring
2 8 (25.00%) Spring Cloud
2 8 (25.00%) Web Services
3 5 (15.63%) React
4 3 (9.38%) JPA
4 3 (9.38%) LDAP
5 2 (6.25%) LAMP
Miscellaneous
1 16 (50.00%) Data Centre
2 3 (9.38%) Device Driver
2 3 (9.38%) Linux Command Line
2 3 (9.38%) NHS
Operating Systems
1 24 (75.00%) Linux
2 16 (50.00%) Windows
3 15 (46.88%) Debian
4 7 (21.88%) Unix
5 5 (15.63%) CentOS
5 5 (15.63%) Red Hat Enterprise Linux
6 4 (12.50%) Ubuntu
7 3 (9.38%) VMS
8 2 (6.25%) Fedora
8 2 (6.25%) Solaris
8 2 (6.25%) Windows Server
8 2 (6.25%) Windows Server 2012
8 2 (6.25%) Windows Server 2016
9 1 (3.13%) Oracle Linux
Processes & Methodologies
1 21 (65.63%) Continuous Integration
1 21 (65.63%) Open Source
2 13 (40.63%) Architectural Design
2 13 (40.63%) Computer Science
2 13 (40.63%) High Availability
2 13 (40.63%) Load Balancing
2 13 (40.63%) Penetration Testing
2 13 (40.63%) Risk Assessment
3 11 (34.38%) Agile Software Development
3 11 (34.38%) Migration
4 8 (25.00%) BDD
4 8 (25.00%) BPMN
4 8 (25.00%) DevOps
4 8 (25.00%) Microservices
4 8 (25.00%) Scrum
4 8 (25.00%) TDD
5 5 (15.63%) Problem-Solving
6 3 (9.38%) Infrastructure Engineering
6 3 (9.38%) Runbook
6 3 (9.38%) Tech Ops
Programming Languages
1 24 (75.00%) Bash Shell
2 16 (50.00%) C
2 16 (50.00%) Perl
3 15 (46.88%) PHP
4 8 (25.00%) Java
4 8 (25.00%) Python
5 5 (15.63%) SQL
6 3 (9.38%) AWK
6 3 (9.38%) PowerShell
6 3 (9.38%) sed
7 2 (6.25%) Ruby
Qualifications
1 15 (46.88%) Degree
2 13 (40.63%) Computer Science Degree
3 9 (28.13%) Security Cleared
4 7 (21.88%) SC Cleared
5 3 (9.38%) RHCE
5 3 (9.38%) RHCSA
6 2 (6.25%) DBS Check
Quality Assurance & Compliance
1 3 (9.38%) SLA
2 2 (6.25%) ISO/IEC 27001
System Software
1 16 (50.00%) KVM
2 15 (46.88%) iptables
3 13 (40.63%) Kamailio
3 13 (40.63%) QEMU
4 8 (25.00%) VMware Infrastructure
5 5 (15.63%) Docker
5 5 (15.63%) Sendmail
6 3 (9.38%) Firmware
6 3 (9.38%) OCFS2
6 3 (9.38%) Oracle RAC
6 3 (9.38%) qmail
6 3 (9.38%) Samba
6 3 (9.38%) Veritas Cluster Server
6 3 (9.38%) Veritas Volume Manager
6 3 (9.38%) Virtual Machines
6 3 (9.38%) Xen
7 2 (6.25%) NFS
Systems Management
1 20 (62.50%) Ansible
2 18 (56.25%) Puppet
3 15 (46.88%) HAProxy
4 13 (40.63%) Galera Cluster
4 13 (40.63%) ZABBIX
5 3 (9.38%) Failover Clustering
5 3 (9.38%) Kubernetes
5 3 (9.38%) SELinux
5 3 (9.38%) Terraform
6 2 (6.25%) HP Data Protector
6 2 (6.25%) Opscode Chef
6 2 (6.25%) Oracle Enterprise Manager
Vendors
1 18 (56.25%) HP
1 18 (56.25%) Microsoft
2 13 (40.63%) Cisco
2 13 (40.63%) GENBAND
2 13 (40.63%) Juniper
2 13 (40.63%) Mitel
2 13 (40.63%) Nortel
2 13 (40.63%) Percona
2 13 (40.63%) SonicWALL
3 9 (28.13%) Red Hat
4 8 (25.00%) VMware
5 6 (18.75%) Oracle
6 3 (9.38%) Black Duck
7 2 (6.25%) NEC
7 2 (6.25%) NetApp
7 2 (6.25%) Northgate