Period
to 20 April 2021

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

Postfix
UK
6 months to
20 Apr 2021
Same period 2020 Same period 2019
Rank 818 933 1062
Rank change year-on-year +115 +129 +130
Permanent jobs citing Postfix 34 22 66
As % of all permanent jobs advertised in the UK 0.040% 0.020% 0.044%
As % of the System Software category 0.22% 0.12% 0.27%
Number of salaries quoted 29 19 51
10th Percentile £36,000 £47,150 £39,500
25th Percentile £41,250 £58,750 £51,125
Median annual salary (50th Percentile) £50,000 £70,000 £56,500
Median % change year-on-year -28.57% +23.89% +13.00%
75th Percentile £57,500 £77,500 £62,500
90th Percentile £72,750 " £75,000
UK excluding London median annual salary £52,500 £70,000 £55,000
% change year-on-year -25.00% +27.27% +11.11%

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 with a requirement for system software skills.

All System Software Skills
UK
Permanent vacancies with a requirement for system software skills 15,697 18,880 24,028
As % of all permanent IT jobs advertised in the UK 18.59% 17.17% 16.17%
Number of salaries quoted 12,760 15,553 19,689
10th Percentile £30,000 £26,250 £25,975
25th Percentile £38,750 £35,250 £33,750
Median annual salary (50th Percentile) £55,000 £50,000 £50,000
Median % change year-on-year +10.00% - +8.70%
75th Percentile £75,000 £70,000 £68,750
90th Percentile £90,000 £86,250 £83,750
UK excluding London median annual salary £47,500 £45,000 £42,500
% change year-on-year +5.56% +5.88% +6.25%

Postfix
Job Vacancy Trend

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

Job vacancy trend for Postfix in the UK

Postfix
Salary Trend

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

Salary trend for Postfix in the UK

Postfix
Salary Histogram

Salary distribution for jobs citing Postfix over the 6 months to 20 April 2021.

Salary histogram for Postfix in the UK

Postfix
Top 9 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Postfix within the UK over the 6 months to 20 April 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
England +152 29 £42,500 -38.18% 2
London +130 23 £47,500 -35.59%
UK excluding London +86 11 £52,500 -25.00% 3
Northern Ireland - 5 £52,500 -
Work from Home - 5 £52,500 -
South East +63 3 £30,000 -52.00% 1
Midlands +17 2 £40,000 -46.67% 1
East Midlands - 2 £40,000 -
East of England - 1 £70,000 -

For the 6 months to 20 April 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 with a requirement for Postfix.

1 26 (76.47%) Continuous Integration
2 25 (73.53%) Linux
3 22 (64.71%) Apache
3 22 (64.71%) Ansible
4 21 (61.76%) Open Source
5 20 (58.82%) Bash Shell
5 20 (58.82%) Puppet
6 19 (55.88%) nginx
7 17 (50.00%) AWS
7 17 (50.00%) Degree
7 17 (50.00%) Computer Science
7 17 (50.00%) Tomcat
7 17 (50.00%) PostgreSQL
7 17 (50.00%) Computer Science Degree
8 16 (47.06%) Git (software)
9 15 (44.12%) Perl
9 15 (44.12%) C
9 15 (44.12%) SQL Server
9 15 (44.12%) Microsoft
9 15 (44.12%) HP
9 15 (44.12%) KVM
9 15 (44.12%) Data Centre
10 14 (41.18%) Microservices
10 14 (41.18%) Jenkins
10 14 (41.18%) HAProxy
10 14 (41.18%) VPN
10 14 (41.18%) Windows
10 14 (41.18%) PHP
10 14 (41.18%) Firewall
10 14 (41.18%) Amazon EC2

Postfix
Co-occurring IT Skills 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 22 (64.71%) Apache
2 19 (55.88%) nginx
3 17 (50.00%) Tomcat
4 12 (35.29%) ejabberd
4 12 (35.29%) IIS
5 5 (14.71%) Apache Pulsar
Cloud Services
1 17 (50.00%) AWS
2 14 (41.18%) Amazon EC2
3 5 (14.71%) Amazon S3
3 5 (14.71%) Route 53
3 5 (14.71%) Virtual Private Cloud
4 4 (11.76%) Amazon SQS
4 4 (11.76%) AWS KMS
5 3 (8.82%) Azure
5 3 (8.82%) Datadog
5 3 (8.82%) IaaS
5 3 (8.82%) Slack
Communications & Networking
1 14 (41.18%) Firewall
1 14 (41.18%) VPN
2 12 (35.29%) Asterisk PBX
2 12 (35.29%) BGP
2 12 (35.29%) Diameter Protocol
2 12 (35.29%) Internet
2 12 (35.29%) LAN
2 12 (35.29%) PBX
2 12 (35.29%) SNMP
3 8 (23.53%) DNS
4 5 (14.71%) OpenVPN
5 3 (8.82%) DHCP
5 3 (8.82%) FTP
5 3 (8.82%) NAS
5 3 (8.82%) SAN
5 3 (8.82%) SSL
6 2 (5.88%) HTTPS
6 2 (5.88%) Reverse Proxy
6 2 (5.88%) TCP/IP
Database & Business Intelligence
1 17 (50.00%) PostgreSQL
2 15 (44.12%) SQL Server
3 5 (14.71%) MongoDB
3 5 (14.71%) MySQL
4 4 (11.76%) Amazon RDS
5 2 (5.88%) Redis
Development Applications
1 16 (47.06%) Git (software)
2 14 (41.18%) Jenkins
3 9 (26.47%) DbUnit
3 9 (26.47%) jMock
3 9 (26.47%) JUnit
3 9 (26.47%) Maven
3 9 (26.47%) Mockito
3 9 (26.47%) SonarQube
4 5 (14.71%) Artifactory
4 5 (14.71%) GitLab
4 5 (14.71%) Subversion
4 5 (14.71%) Travis CI
5 3 (8.82%) Atlassian Bamboo
5 3 (8.82%) JIRA
General
1 12 (35.29%) Games
2 4 (11.76%) Public Sector
3 3 (8.82%) Retail
Job Titles
1 12 (35.29%) Network Engineer
1 12 (35.29%) Network Systems Engineer
1 12 (35.29%) Systems Engineer
2 9 (26.47%) Developer
2 9 (26.47%) Java Developer
3 5 (14.71%) DevOps Engineer
3 5 (14.71%) Site Reliability Engineer
4 4 (11.76%) Infrastructure Engineer
5 3 (8.82%) Cloud Engineer
5 3 (8.82%) Cloud Infrastructure Engineer
5 3 (8.82%) Full Stack Developer
6 2 (5.88%) Administrator
6 2 (5.88%) Junior
6 2 (5.88%) Linux Administrator
6 2 (5.88%) Linux Systems Administrator
6 2 (5.88%) Platform Engineer
6 2 (5.88%) SC Cleared Java Developer
6 2 (5.88%) Site Engineer
6 2 (5.88%) Systems Administrator
7 1 (2.94%) Linux Engineer
Libraries, Frameworks & Software Standards
1 12 (35.29%) XMPP
2 9 (26.47%) ActiveMQ
2 9 (26.47%) AngularJS
2 9 (26.47%) Hibernate
2 9 (26.47%) PowerMock
2 9 (26.47%) RESTful
2 9 (26.47%) SOAP
2 9 (26.47%) Spring
2 9 (26.47%) Spring Cloud
2 9 (26.47%) Web Services
3 8 (23.53%) REST
4 7 (20.59%) LAMP
5 5 (14.71%) Elastic Stack
5 5 (14.71%) Kafka
5 5 (14.71%) LAPP Stack
5 5 (14.71%) LEMP Stack
5 5 (14.71%) RabbitMQ
5 5 (14.71%) React
6 4 (11.76%) JPA
7 3 (8.82%) LDAP
Miscellaneous
1 15 (44.12%) Data Centre
2 12 (35.29%) Analytical Skills
2 12 (35.29%) Organisational Skills
3 8 (23.53%) Linux Command Line
4 5 (14.71%) Management Information System
5 3 (8.82%) Device Driver
5 3 (8.82%) NHS
Operating Systems
1 25 (73.53%) Linux
2 14 (41.18%) Windows
3 12 (35.29%) Debian
4 7 (20.59%) CentOS
4 7 (20.59%) Ubuntu
5 5 (14.71%) Unix
6 3 (8.82%) VMS
7 2 (5.88%) Fedora
7 2 (5.88%) Red Hat Enterprise Linux
7 2 (5.88%) Windows Server
7 2 (5.88%) Windows Server 2012
7 2 (5.88%) Windows Server 2016
Processes & Methodologies
1 26 (76.47%) Continuous Integration
2 21 (61.76%) Open Source
3 17 (50.00%) Computer Science
4 14 (41.18%) Microservices
5 13 (38.24%) DevOps
6 12 (35.29%) Agile Software Development
6 12 (35.29%) Architectural Design
6 12 (35.29%) High Availability
6 12 (35.29%) Load Balancing
6 12 (35.29%) Migration
6 12 (35.29%) Penetration Testing
6 12 (35.29%) Risk Assessment
7 9 (26.47%) BDD
7 9 (26.47%) BPMN
7 9 (26.47%) Scrum
7 9 (26.47%) TDD
8 8 (23.53%) Problem-Solving
9 5 (14.71%) Configuration Management
9 5 (14.71%) Infrastructure as Code
9 5 (14.71%) Site Reliability Engineering
Programming Languages
1 20 (58.82%) Bash Shell
2 15 (44.12%) C
2 15 (44.12%) Perl
3 14 (41.18%) PHP
4 11 (32.35%) Python
4 11 (32.35%) SQL
5 9 (26.47%) Java
6 5 (14.71%) Ruby
7 3 (8.82%) AWK
7 3 (8.82%) PowerShell
7 3 (8.82%) sed
Qualifications
1 17 (50.00%) Computer Science Degree
1 17 (50.00%) Degree
2 8 (23.53%) SC Cleared
2 8 (23.53%) Security Cleared
3 3 (8.82%) RHCE
3 3 (8.82%) RHCSA
Quality Assurance & Compliance
1 3 (8.82%) SLA
System Software
1 15 (44.12%) KVM
2 12 (35.29%) iptables
2 12 (35.29%) Kamailio
2 12 (35.29%) QEMU
3 8 (23.53%) Docker
4 5 (14.71%) VMware Infrastructure
5 3 (8.82%) Firmware
5 3 (8.82%) OCFS2
5 3 (8.82%) Oracle RAC
5 3 (8.82%) qmail
5 3 (8.82%) Samba
5 3 (8.82%) Sendmail
5 3 (8.82%) Veritas Cluster Server
5 3 (8.82%) Veritas Volume Manager
5 3 (8.82%) Xen
6 2 (5.88%) NFS
Systems Management
1 22 (64.71%) Ansible
2 20 (58.82%) Puppet
3 14 (41.18%) HAProxy
4 12 (35.29%) Galera Cluster
4 12 (35.29%) ZABBIX
5 8 (23.53%) Kubernetes
5 8 (23.53%) Terraform
6 5 (14.71%) Docker Swarm
6 5 (14.71%) Grafana
6 5 (14.71%) Munin
6 5 (14.71%) Nagios
6 5 (14.71%) Prometheus
7 3 (8.82%) Failover Clustering
7 3 (8.82%) SELinux
Vendors
1 15 (44.12%) HP
1 15 (44.12%) Microsoft
2 12 (35.29%) Cisco
2 12 (35.29%) GENBAND
2 12 (35.29%) Juniper
2 12 (35.29%) Mitel
2 12 (35.29%) Nortel
2 12 (35.29%) Percona
2 12 (35.29%) SonicWALL
3 8 (23.53%) Red Hat
4 5 (14.71%) Lets Encrypt
4 5 (14.71%) VMware
5 3 (8.82%) Black Duck
5 3 (8.82%) Oracle