Job Vacancy Trend Salary Trend Salary Histogram Job Locations Skill Sets
Period
to 26 July 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 26 July 2021 with a comparison to the same period in the previous 2 years.

Postfix
UK
6 months to
26 Jul 2021		 Same period 2020 Same period 2019
Rank 950 807 1077
Rank change year-on-year -143 +270 +87
Permanent jobs citing Postfix 41 10 42
As % of all permanent jobs advertised in the UK 0.036% 0.014% 0.029%
As % of the System Software category 0.20% 0.079% 0.17%
Number of salaries quoted 32 10 33
10th Percentile £41,250 £25,750 £35,500
25th Percentile £44,063 £62,500 £48,750
Median annual salary (50th Percentile) £62,500 £70,000 £60,000
Median % change year-on-year -10.71% +16.67% +20.00%
75th Percentile £73,750 £77,500 £62,500
90th Percentile £75,000 " £73,500
UK excluding London median annual salary £52,500 £70,000 £60,000
% change year-on-year -25.00% +16.67% +93.55%

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 20,835 12,579 24,755
As % of all permanent IT jobs advertised in the UK 18.51% 17.79% 17.04%
Number of salaries quoted 14,774 10,467 20,598
10th Percentile £29,750 £29,000 £25,750
25th Percentile £40,000 £38,000 £33,173
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 £70,000
90th Percentile £92,500 £87,500 £86,250
UK excluding London median annual salary £47,500 £45,000 £42,500
% change year-on-year +5.56% +5.88% -

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 26 July 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 26 July 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 -142 40 £70,000 - 9
London -98 28 £72,500 -3.33% 5
UK excluding London -123 14 £52,500 -25.00% 4
East of England - 6 £70,000 - 1
South East -72 5 £30,000 -57.14% 2
North of England -64 2 £52,500 -25.00%
North East - 2 £52,500 -
Work from Home - 1 £55,000 - 1
Northern Ireland - 1 £55,000 -

For the 6 months to 26 July 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 30 (73.17%) Continuous Integration
2 29 (70.73%) Open Source
3 26 (63.41%) PostgreSQL
4 23 (56.10%) Linux
4 23 (56.10%) AWS
5 22 (53.66%) Bash Shell
6 21 (51.22%) Puppet
7 20 (48.78%) Agile Software Development
8 19 (46.34%) Apache
8 19 (46.34%) Amazon EC2
9 18 (43.90%) BDD
9 18 (43.90%) ActiveMQ
9 18 (43.90%) Spring
9 18 (43.90%) Maven
9 18 (43.90%) SOAP
9 18 (43.90%) Web Services
9 18 (43.90%) Java
9 18 (43.90%) JUnit
9 18 (43.90%) TDD
9 18 (43.90%) Scrum
9 18 (43.90%) iptables
9 18 (43.90%) Spring Cloud
10 17 (41.46%) Microservices
10 17 (41.46%) Security Cleared
11 16 (39.02%) Hibernate
11 16 (39.02%) Perl
11 16 (39.02%) Ansible
12 15 (36.59%) Jenkins
12 15 (36.59%) Microsoft
12 15 (36.59%) SC Cleared

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 19 (46.34%) Apache
2 12 (29.27%) nginx
2 12 (29.27%) Tomcat
3 11 (26.83%) ejabberd
3 11 (26.83%) IIS
4 5 (12.20%) OpenEdge
5 2 (4.88%) JBoss
6 1 (2.44%) Apache Pulsar
Cloud Services
1 23 (56.10%) AWS
2 19 (46.34%) Amazon EC2
3 8 (19.51%) Amazon SQS
3 8 (19.51%) AWS KMS
4 2 (4.88%) Azure
4 2 (4.88%) Datadog
4 2 (4.88%) Slack
5 1 (2.44%) Amazon S3
5 1 (2.44%) Route 53
5 1 (2.44%) Virtual Private Cloud
Communications & Networking
1 13 (31.71%) Firewall
1 13 (31.71%) Internet
2 11 (26.83%) Asterisk PBX
2 11 (26.83%) BGP
2 11 (26.83%) Diameter Protocol
2 11 (26.83%) LAN
2 11 (26.83%) PBX
2 11 (26.83%) SNMP
2 11 (26.83%) VPN
3 9 (21.95%) DNS
4 5 (12.20%) SMTP
5 4 (9.76%) TCP/IP
6 2 (4.88%) DHCP
6 2 (4.88%) NAS
6 2 (4.88%) Network Security
6 2 (4.88%) SAN
7 1 (2.44%) OpenVPN
Database & Business Intelligence
1 26 (63.41%) PostgreSQL
2 13 (31.71%) SQL Server
3 8 (19.51%) Amazon RDS
4 6 (14.63%) MySQL
5 2 (4.88%) RDBMS
5 2 (4.88%) Relational Database
6 1 (2.44%) MongoDB
Development Applications
1 18 (43.90%) JUnit
1 18 (43.90%) Maven
2 15 (36.59%) Git (software)
2 15 (36.59%) Jenkins
3 14 (34.15%) DbUnit
3 14 (34.15%) jMock
3 14 (34.15%) Mockito
3 14 (34.15%) SonarQube
4 2 (4.88%) Atlassian Bamboo
4 2 (4.88%) JIRA
5 1 (2.44%) Artifactory
5 1 (2.44%) GitLab
5 1 (2.44%) Subversion
5 1 (2.44%) Travis CI
General
1 11 (26.83%) Analytical Skills
1 11 (26.83%) Games
1 11 (26.83%) Organisational Skills
2 10 (24.39%) Public Sector
3 9 (21.95%) Retail
4 2 (4.88%) Local Government
4 2 (4.88%) Social Skills
Job Titles
1 18 (43.90%) Developer
1 18 (43.90%) Java Developer
2 11 (26.83%) Network Engineer
2 11 (26.83%) Network Systems Engineer
2 11 (26.83%) Systems Engineer
3 8 (19.51%) Full Stack Developer
4 5 (12.20%) Infrastructure Specialist
4 5 (12.20%) Linux Engineer
4 5 (12.20%) Linux Specialist
5 3 (7.32%) Infrastructure Engineer
5 3 (7.32%) Linux Infrastructure Engineer
6 2 (4.88%) Senior Linux Engineer
6 2 (4.88%) Unix Engineer
6 2 (4.88%) Unix Infrastructure Engineer
6 2 (4.88%) Unix Linux Engineer
7 1 (2.44%) DevOps Engineer
7 1 (2.44%) Junior
7 1 (2.44%) Platform Engineer
7 1 (2.44%) Site Engineer
7 1 (2.44%) Site Reliability Engineer
Libraries, Frameworks & Software Standards
1 18 (43.90%) ActiveMQ
1 18 (43.90%) SOAP
1 18 (43.90%) Spring
1 18 (43.90%) Spring Cloud
1 18 (43.90%) Web Services
2 16 (39.02%) Hibernate
3 14 (34.15%) PowerMock
3 14 (34.15%) RESTful
4 12 (29.27%) AngularJS
5 11 (26.83%) XMPP
6 10 (24.39%) React
7 9 (21.95%) REST
8 6 (14.63%) JPA
8 6 (14.63%) LAMP
8 6 (14.63%) LAPP Stack
9 5 (12.20%) Middleware
10 4 (9.76%) Spring Boot
11 1 (2.44%) Elastic Stack
11 1 (2.44%) LEMP Stack
11 1 (2.44%) RabbitMQ
Miscellaneous
1 11 (26.83%) Data Centre
2 9 (21.95%) NHS
3 1 (2.44%) Linux Command Line
3 1 (2.44%) Management Information System
Operating Systems
1 23 (56.10%) Linux
2 13 (31.71%) Debian
2 13 (31.71%) Windows
3 9 (21.95%) Red Hat Enterprise Linux
4 5 (12.20%) CentOS
5 3 (7.32%) Ubuntu
6 2 (4.88%) Oracle Linux
6 2 (4.88%) Solaris
6 2 (4.88%) Unix
Processes & Methodologies
1 30 (73.17%) Continuous Integration
2 29 (70.73%) Open Source
3 20 (48.78%) Agile Software Development
4 18 (43.90%) BDD
4 18 (43.90%) Scrum
4 18 (43.90%) TDD
5 17 (41.46%) Microservices
6 12 (29.27%) BPMN
6 12 (29.27%) Computer Science
7 11 (26.83%) Architectural Design
7 11 (26.83%) Cost Reduction
7 11 (26.83%) High Availability
7 11 (26.83%) Load Balancing
7 11 (26.83%) Penetration Testing
7 11 (26.83%) Risk Assessment
8 9 (21.95%) DevOps
9 8 (19.51%) Biometrics
9 8 (19.51%) Kanban
10 4 (9.76%) Migration
11 3 (7.32%) Problem-Solving
Programming Languages
1 22 (53.66%) Bash Shell
2 18 (43.90%) Java
3 16 (39.02%) Perl
4 11 (26.83%) C
4 11 (26.83%) PHP
5 7 (17.07%) Python
5 7 (17.07%) SQL
6 3 (7.32%) Ruby
Qualifications
1 17 (41.46%) Security Cleared
2 15 (36.59%) SC Cleared
3 14 (34.15%) Degree
4 12 (29.27%) Computer Science Degree
5 2 (4.88%) DBS Check
Quality Assurance & Compliance
1 2 (4.88%) ISO/IEC 27001
System Software
1 18 (43.90%) iptables
2 11 (26.83%) Kamailio
2 11 (26.83%) KVM
2 11 (26.83%) QEMU
2 11 (26.83%) VMware Infrastructure
3 9 (21.95%) Docker
4 5 (12.20%) NFS
4 5 (12.20%) Samba
5 4 (9.76%) Virtual Machines
6 2 (4.88%) Sendmail
Systems Management
1 21 (51.22%) Puppet
2 16 (39.02%) Ansible
3 11 (26.83%) Galera Cluster
3 11 (26.83%) HAProxy
3 11 (26.83%) ZABBIX
4 7 (17.07%) Kubernetes
5 3 (7.32%) Terraform
6 2 (4.88%) HP Data Protector
6 2 (4.88%) Opscode Chef
6 2 (4.88%) Oracle Enterprise Manager
7 1 (2.44%) Docker Swarm
7 1 (2.44%) Grafana
7 1 (2.44%) Munin
7 1 (2.44%) Nagios
7 1 (2.44%) Prometheus
Vendors
1 15 (36.59%) Microsoft
2 13 (31.71%) HP
3 11 (26.83%) Cisco
3 11 (26.83%) GENBAND
3 11 (26.83%) Juniper
3 11 (26.83%) Mitel
3 11 (26.83%) Nortel
3 11 (26.83%) Percona
3 11 (26.83%) SonicWALL
3 11 (26.83%) VMware
4 9 (21.95%) Red Hat
5 5 (12.20%) Clearswift
5 5 (12.20%) Symantec
6 4 (9.76%) Oracle
7 2 (4.88%) Black Duck
7 2 (4.88%) NEC
7 2 (4.88%) NetApp
7 2 (4.88%) Northgate
8 1 (2.44%) Lets Encrypt