Period
to 21 September 2021

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 2021 with a comparison to the same period in the previous 2 years.

Postfix
England > London
6 months to
21 Sep 2021
Same period 2020 Same period 2019
Rank 688 481 738
Rank change year-on-year -207 +257 +100
Permanent jobs citing Postfix 26 11 2
As % of all permanent jobs advertised in London 0.053% 0.054% 0.004%
As % of the System Software category 0.28% 0.28% 0.020%
Number of salaries quoted 25 8 1
10th Percentile £50,000 £68,125 "
25th Percentile £71,250 £70,000 £52,500
Median annual salary (50th Percentile) £72,500 £75,000 £55,000
Median % change year-on-year -3.33% +36.36% -4.35%
75th Percentile £77,500 £77,500 £57,500
90th Percentile £80,000 " "
England median annual salary £72,500 £75,000 £47,500
% change year-on-year -3.33% +57.89% -15.93%

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 9,437 3,970 9,884
As % of all permanent IT jobs advertised in London 19.22% 19.48% 17.80%
Number of salaries quoted 5,913 3,467 8,258
10th Percentile £37,500 £41,250 £29,750
25th Percentile £52,500 £51,250 £42,500
Median annual salary (50th Percentile) £71,200 £70,000 £65,000
Median % change year-on-year +1.71% +7.69% +8.33%
75th Percentile £90,000 £85,000 £82,500
90th Percentile £107,500 £100,000 £97,500
England median annual salary £57,000 £55,000 £50,000
% change year-on-year +3.64% +10.00% -

Postfix
Job Vacancy Trend in London

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

Job vacancy trend for Postfix in London

Postfix
Salary Trend in London

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

Salary trend for Postfix in London

Postfix
Salary Histogram in London

Salary distribution for jobs citing Postfix in London over the 6 months to 21 September 2021.

Salary histogram for Postfix in London

Postfix
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Postfix within the London region over the 6 months to 21 September 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
South London -15 17 £75,000 - 3
Postfix
England

For the 6 months to 21 September 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 London region with a requirement for Postfix.

1 26 (100.00%) Continuous Integration
1 26 (100.00%) Open Source
2 22 (84.62%) Amazon EC2
2 22 (84.62%) AWS
2 22 (84.62%) BDD
2 22 (84.62%) ActiveMQ
2 22 (84.62%) Spring
2 22 (84.62%) Maven
2 22 (84.62%) SOAP
2 22 (84.62%) Web Services
2 22 (84.62%) Java
2 22 (84.62%) JUnit
2 22 (84.62%) PostgreSQL
2 22 (84.62%) Scrum
2 22 (84.62%) Agile Software Development
2 22 (84.62%) TDD
2 22 (84.62%) Spring Cloud
3 20 (76.92%) SC Cleared
3 20 (76.92%) Security Cleared
4 18 (69.23%) Hibernate
4 18 (69.23%) Microservices
5 16 (61.54%) SonarQube
5 16 (61.54%) Jenkins
5 16 (61.54%) Git (software)
5 16 (61.54%) jMock
5 16 (61.54%) PowerMock
5 16 (61.54%) RESTful
5 16 (61.54%) DbUnit
5 16 (61.54%) Mockito
6 12 (46.15%) BPMN

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 4 (15.38%) Apache
1 4 (15.38%) ejabberd
1 4 (15.38%) IIS
1 4 (15.38%) nginx
1 4 (15.38%) Tomcat
Cloud Services
1 22 (84.62%) Amazon EC2
1 22 (84.62%) AWS
2 11 (42.31%) Amazon SQS
2 11 (42.31%) AWS KMS
Communications & Networking
1 4 (15.38%) Asterisk PBX
1 4 (15.38%) BGP
1 4 (15.38%) Diameter Protocol
1 4 (15.38%) Firewall
1 4 (15.38%) Internet
1 4 (15.38%) LAN
1 4 (15.38%) PBX
1 4 (15.38%) SNMP
1 4 (15.38%) VPN
Database & Business Intelligence
1 22 (84.62%) PostgreSQL
2 11 (42.31%) Amazon RDS
3 4 (15.38%) SQL Server
Development Applications
1 22 (84.62%) JUnit
1 22 (84.62%) Maven
2 16 (61.54%) DbUnit
2 16 (61.54%) Git (software)
2 16 (61.54%) Jenkins
2 16 (61.54%) jMock
2 16 (61.54%) Mockito
2 16 (61.54%) SonarQube
General
1 11 (42.31%) Public Sector
2 9 (34.62%) Retail
3 4 (15.38%) Analytical Skills
3 4 (15.38%) Games
3 4 (15.38%) Organisational Skills
Job Titles
1 22 (84.62%) Developer
1 22 (84.62%) Java Developer
2 11 (42.31%) Full Stack Developer
3 4 (15.38%) Network Engineer
3 4 (15.38%) Network Systems Engineer
3 4 (15.38%) Systems Engineer
Libraries, Frameworks & Software Standards
1 22 (84.62%) ActiveMQ
1 22 (84.62%) SOAP
1 22 (84.62%) Spring
1 22 (84.62%) Spring Cloud
1 22 (84.62%) Web Services
2 18 (69.23%) Hibernate
3 16 (61.54%) PowerMock
3 16 (61.54%) RESTful
4 12 (46.15%) AngularJS
5 11 (42.31%) React
6 7 (26.92%) JPA
6 7 (26.92%) REST
7 6 (23.08%) Spring Boot
8 4 (15.38%) XMPP
Miscellaneous
1 9 (34.62%) NHS
2 4 (15.38%) Data Centre
Operating Systems
1 4 (15.38%) Debian
1 4 (15.38%) Linux
1 4 (15.38%) Windows
Processes & Methodologies
1 26 (100.00%) Continuous Integration
1 26 (100.00%) Open Source
2 22 (84.62%) Agile Software Development
2 22 (84.62%) BDD
2 22 (84.62%) Scrum
2 22 (84.62%) TDD
3 18 (69.23%) Microservices
4 12 (46.15%) BPMN
5 11 (42.31%) Biometrics
5 11 (42.31%) Full Stack Development
5 11 (42.31%) Kanban
6 7 (26.92%) DevOps
7 4 (15.38%) Architectural Design
7 4 (15.38%) Computer Science
7 4 (15.38%) Cost Reduction
7 4 (15.38%) High Availability
7 4 (15.38%) Load Balancing
7 4 (15.38%) Penetration Testing
7 4 (15.38%) Risk Assessment
8 1 (3.85%) Migration
Programming Languages
1 22 (84.62%) Java
2 7 (26.92%) SQL
3 4 (15.38%) Bash Shell
3 4 (15.38%) C
3 4 (15.38%) Perl
3 4 (15.38%) PHP
Qualifications
1 20 (76.92%) SC Cleared
1 20 (76.92%) Security Cleared
2 4 (15.38%) Computer Science Degree
2 4 (15.38%) Degree
System Software
1 6 (23.08%) Docker
2 4 (15.38%) iptables
2 4 (15.38%) Kamailio
2 4 (15.38%) KVM
2 4 (15.38%) QEMU
Systems Management
1 6 (23.08%) Kubernetes
2 4 (15.38%) Ansible
2 4 (15.38%) Galera Cluster
2 4 (15.38%) HAProxy
2 4 (15.38%) Puppet
2 4 (15.38%) ZABBIX
Vendors
1 4 (15.38%) Cisco
1 4 (15.38%) GENBAND
1 4 (15.38%) HP
1 4 (15.38%) Juniper
1 4 (15.38%) Microsoft
1 4 (15.38%) Mitel
1 4 (15.38%) Nortel
1 4 (15.38%) Percona
1 4 (15.38%) SonicWALL