Period
to 22 April 2019

The following table provides summary statistics for permanent job vacancies advertised in England with a requirement for POSIX skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited POSIX over the 6 months to 22 April 2019 with a comparison to the same period in the previous 2 years.

Portable Operating System Interface (POSIX)
UK > England
6 months to
22 Apr 2019
Same period 2018 Same period 2017
Rank 1054 1146 1090
Rank change year-on-year +92 -56 +113
Permanent jobs citing POSIX 19 31 56
As % of all permanent IT jobs advertised in England 0.014% 0.019% 0.035%
As % of the Libraries, Frameworks & Software Standards category 0.035% 0.046% 0.086%
Number of salaries quoted 15 18 36
England median annual salary £67,500 £48,750 £40,750
Median salary % change year-on-year +38.46% +19.63% -22.38%
10th Percentile £42,995 £35,000 £29,000
90th Percentile £110,000 £80,750 £68,750
UK median annual salary £67,500 £48,750 £41,500
% change year-on-year +38.46% +17.47% -20.95%

POSIX is in the Software Libraries and Frameworks 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 technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
England
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 53,530 67,882 65,003
As % of all permanent IT jobs advertised in England 38.92% 40.87% 40.28%
Number of salaries quoted 44,047 57,661 56,073
England median annual salary £53,000 £50,000 £47,500
Median salary % change year-on-year +6.00% +5.26% -
10th Percentile £31,250 £31,000 £29,000
90th Percentile £85,000 £80,000 £77,500
UK median annual salary £52,500 £50,000 £47,500
% change year-on-year +5.00% +5.26% -

POSIX
Job Vacancy Trend in England

Job postings citing POSIX as a percentage of all IT jobs advertised in England.

Job vacancy trend for POSIX in England

POSIX
Salary Trend in England

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing POSIX in England.

Salary trend for POSIX in England

POSIX
Salary Histogram in England

The salary distribution of IT jobs citing POSIX in England over the 6 months to 22 April 2019.

Salary histogram for POSIX in England

POSIX
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing POSIX within the England region over the 6 months to 22 April 2019. 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 +56 8 £100,000 -14.89% 3
East of England +69 7 £45,139 +28.97% 1
South East +24 4 £47,500 -5.00% 1
POSIX
UK

For the 6 months to 22 April 2019, IT jobs citing POSIX 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 POSIX.

1 18 (94.74%) Linux
2 12 (63.16%) C++
3 11 (57.89%) Computer Science
4 9 (47.37%) Multithreading
4 9 (47.37%) Software Engineering
5 8 (42.11%) Git (software)
5 8 (42.11%) Open Source
6 7 (36.84%) Boost C++ Libraries
6 7 (36.84%) Mathematics
7 6 (31.58%) Data Analysis
7 6 (31.58%) Bioinformatics
7 6 (31.58%) Degree
7 6 (31.58%) Physics
7 6 (31.58%) Biology
7 6 (31.58%) Informatics
7 6 (31.58%) OpenStack
7 6 (31.58%) Analytical Skills
7 6 (31.58%) Private Cloud
7 6 (31.58%) Computer Science Degree
8 5 (26.32%) Data Structures
8 5 (26.32%) ZeroMQ
8 5 (26.32%) Kafka
8 5 (26.32%) Analytics
8 5 (26.32%) Protocol Buffers
8 5 (26.32%) WebSockets
8 5 (26.32%) Hedge funds
8 5 (26.32%) Problem-Solving
8 5 (26.32%) FIX Protocol
8 5 (26.32%) Ergonomics
8 5 (26.32%) CentOS

POSIX
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 6 (31.58%) OpenStack
Communications & Networking
1 2 (10.53%) SNMP
2 1 (5.26%) DHCP
2 1 (5.26%) HTTP
2 1 (5.26%) IGMP
2 1 (5.26%) Internet
2 1 (5.26%) Q.931
2 1 (5.26%) RTCP
2 1 (5.26%) RTP
2 1 (5.26%) TCP/IP
2 1 (5.26%) VLAN
2 1 (5.26%) VoIP
2 1 (5.26%) Wireshark
Database & Business Intelligence
1 3 (15.79%) Blockchain
1 3 (15.79%) NoSQL
2 1 (5.26%) Apache Cassandra
2 1 (5.26%) PostgreSQL
Development Applications
1 8 (42.11%) Git (software)
2 2 (10.53%) Atlassian Bamboo
2 2 (10.53%) CMake
2 2 (10.53%) Jenkins
3 1 (5.26%) Subversion
General
1 1 (5.26%) Finance
1 1 (5.26%) Publishing
1 1 (5.26%) Telecoms
Job Titles
1 14 (73.68%) Developer
2 8 (42.11%) Software Developer
3 7 (36.84%) C++ Developer
3 7 (36.84%) Senior Developer
3 7 (36.84%) Senior Software Developer
4 4 (21.05%) Software Engineer
5 3 (15.79%) C++ Software Engineer
6 2 (10.53%) Blockchain Developer
6 2 (10.53%) Principal Engineer
6 2 (10.53%) Principal Software Engineer
7 1 (5.26%) Automation Engineer
7 1 (5.26%) Blockchain Lead
7 1 (5.26%) C++ Software Developer
7 1 (5.26%) Database Engineer
7 1 (5.26%) Embedded Engineer
7 1 (5.26%) Embedded Software Engineer
7 1 (5.26%) IoT Software Engineer
7 1 (5.26%) Lead Developer
7 1 (5.26%) NoSQL Engineer
7 1 (5.26%) Senior C++ Developer
Libraries, Frameworks & Software Standards
1 7 (36.84%) Boost C++ Libraries
2 5 (26.32%) FIX Protocol
2 5 (26.32%) JSON
2 5 (26.32%) Kafka
2 5 (26.32%) Protocol Buffers
2 5 (26.32%) STL
2 5 (26.32%) WebSockets
2 5 (26.32%) ZeroMQ
3 3 (15.79%) Pthreads
4 2 (10.53%) RESTful
5 1 (5.26%) 802.1X
5 1 (5.26%) Qt
5 1 (5.26%) Smart Contracts
5 1 (5.26%) Yocto
Miscellaneous
1 6 (31.58%) Analytical Skills
1 6 (31.58%) Private Cloud
2 5 (26.32%) Data Structures
2 5 (26.32%) Hedge funds
3 1 (5.26%) Bitcoin
3 1 (5.26%) Device Driver
3 1 (5.26%) Public Cloud
3 1 (5.26%) Self-Motivation
Operating Systems
1 18 (94.74%) Linux
2 5 (26.32%) CentOS
2 5 (26.32%) Fedora
2 5 (26.32%) Red Hat Enterprise Linux
3 4 (21.05%) Windows
4 1 (5.26%) Embedded Linux
4 1 (5.26%) uClinux
4 1 (5.26%) Unix
Processes & Methodologies
1 11 (57.89%) Computer Science
2 9 (47.37%) Multithreading
2 9 (47.37%) Software Engineering
3 8 (42.11%) Open Source
4 7 (36.84%) Mathematics
5 6 (31.58%) Bioinformatics
5 6 (31.58%) Biology
5 6 (31.58%) Data Analysis
5 6 (31.58%) Informatics
5 6 (31.58%) Physics
6 5 (26.32%) Analytics
6 5 (26.32%) Ergonomics
6 5 (26.32%) OOP
6 5 (26.32%) Problem-Solving
7 3 (15.79%) Multithreaded Programming
8 2 (10.53%) Data Acquisition
8 2 (10.53%) Functional Testing
8 2 (10.53%) Performance Testing
8 2 (10.53%) Technical Leadership
8 2 (10.53%) Test Automation
Programming Languages
1 12 (63.16%) C++
2 5 (26.32%) C
3 4 (21.05%) Python
4 3 (15.79%) Java
4 3 (15.79%) SQL
Qualifications
1 6 (31.58%) Computer Science Degree
1 6 (31.58%) Degree
Systems Management
1 2 (10.53%) Ansible
2 1 (5.26%) Grafana
2 1 (5.26%) Kubernetes
Vendors
1 5 (26.32%) Red Hat
2 1 (5.26%) Oracle
2 1 (5.26%) PagerDuty