Period
to 18 November 2017

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 18 November 2017 with a comparison to the same period in the previous 2 years.

Portable Operating System Interface (POSIX)
UK > England
6 months to
18 Nov 2017
Same period 2016 Same period 2015
Rank 1085 1164 1221
Rank change year-on-year +79 +57 +67
Permanent jobs citing POSIX 74 21 56
As % of all permanent IT jobs advertised in England 0.044% 0.012% 0.027%
As % of the Libraries, Frameworks & Software Standards category 0.11% 0.030% 0.071%
Number of salaries quoted 55 17 40
England median annual salary £50,000 £42,500 £62,500
Median salary % change year-on-year +17.65% -32.00% +38.89%
10th Percentile £32,000 £35,000 £47,500
90th Percentile £67,500 £61,500 £96,250
UK median annual salary £50,000 £47,500 £62,500
% change year-on-year +5.26% -24.00% +38.89%

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 67521 69984 78648
As % of all permanent IT jobs advertised in England 40.26% 39.05% 38.17%
Number of salaries quoted 56525 61224 67832
England median annual salary £50,000 £47,500 £45,000
Median salary % change year-on-year +5.26% +5.56% -
10th Percentile £29,750 £28,750 £27,500
90th Percentile £78,750 £77,500 £75,000
UK median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -

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 18 November 2017.

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 18 November 2017. 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
East of England +58 51 £55,000 +15.79%
South East +46 17 £48,750 +27.45%
London -4 6 - -
POSIX
UK

For the 6 months to 18 November 2017, IT jobs citing POSIX also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the England region with a requirement for POSIX.

1 47 (63.51%) C++
2 37 (50.00%) Degree
3 36 (48.65%) Windows
4 35 (47.30%) Multithreading
5 34 (45.95%) Software Engineering
6 30 (40.54%) STL
6 30 (40.54%) C#
7 29 (39.19%) Boost C++ Libraries
8 27 (36.49%) HTTP
8 27 (36.49%) TCP/IP
8 27 (36.49%) Finance
9 25 (33.78%) C
10 24 (32.43%) DNS
10 24 (32.43%) FTP
10 24 (32.43%) Firewall
10 24 (32.43%) Intrusion Detection
10 24 (32.43%) Qt
11 23 (31.08%) Field-Programmable Gate Array
11 23 (31.08%) OOP
12 21 (28.38%) SQL
12 21 (28.38%) HTTPS
12 21 (28.38%) Windows Embedded Compact
13 20 (27.03%) WAN
13 20 (27.03%) Linux
13 20 (27.03%) Analytical Skills
14 18 (24.32%) Network Optimisation
14 18 (24.32%) Xerox
14 18 (24.32%) tcpdump
14 18 (24.32%) HSRP
14 18 (24.32%) VLAN

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 18 (24.32%) CMS
2 3 (4.05%) JBoss
2 3 (4.05%) Jetty
2 3 (4.05%) nginx
2 3 (4.05%) Tomcat
2 3 (4.05%) WebLogic
2 3 (4.05%) WebSphere
Cloud Services
1 2 (2.70%) SaaS
Communications & Networking
1 27 (36.49%) HTTP
1 27 (36.49%) TCP/IP
2 24 (32.43%) DNS
2 24 (32.43%) Firewall
2 24 (32.43%) FTP
2 24 (32.43%) Intrusion Detection
3 21 (28.38%) HTTPS
4 20 (27.03%) WAN
5 18 (24.32%) BGP
5 18 (24.32%) DHCP
5 18 (24.32%) HSRP
5 18 (24.32%) LAN
5 18 (24.32%) OSPF
5 18 (24.32%) tcpdump
5 18 (24.32%) Telnet
5 18 (24.32%) VLAN
5 18 (24.32%) VPN
5 18 (24.32%) Wireshark
6 7 (9.46%) iSCSI
6 7 (9.46%) SAN
Database & Business Intelligence
1 11 (14.86%) PostgreSQL
1 11 (14.86%) Relational Database
2 6 (8.11%) Blockchain
2 6 (8.11%) MySQL
2 6 (8.11%) Oracle Database
2 6 (8.11%) Oracle Database 11g
3 5 (6.76%) RDBMS
3 5 (6.76%) SQL Server
4 3 (4.05%) InterSystems Cache
Development Applications
1 10 (13.51%) Subversion
2 8 (10.81%) CppUnit
3 7 (9.46%) JIRA
4 5 (6.76%) Eclipse
4 5 (6.76%) Git (software)
4 5 (6.76%) Jenkins
5 3 (4.05%) Ant
5 3 (4.05%) GDB
5 3 (4.05%) Hudson
5 3 (4.05%) JUnit
5 3 (4.05%) Maven
5 3 (4.05%) Sonatype Nexus
5 3 (4.05%) Valgrind
5 3 (4.05%) XMLSpy
6 2 (2.70%) Atlassian Bamboo
6 2 (2.70%) Visual Studio
General
1 27 (36.49%) Finance
2 17 (22.97%) Back Office
2 17 (22.97%) Military
3 3 (4.05%) Banking
4 2 (2.70%) Electronics
4 2 (2.70%) Manufacturing
4 2 (2.70%) Marketing
4 2 (2.70%) Telecoms
Job Titles
1 27 (36.49%) Software Engineer
2 24 (32.43%) C++ Software Engineer
3 23 (31.08%) Administrator
4 22 (29.73%) Network Administrator
5 18 (24.32%) IT Administrator
6 15 (20.27%) Embedded Engineer
7 14 (18.92%) Developer
7 14 (18.92%) Embedded C++ Engineer
7 14 (18.92%) Embedded C++ Software Engineer
7 14 (18.92%) Embedded Software Engineer
8 9 (12.16%) C++ Developer
8 9 (12.16%) Principal Engineer
8 9 (12.16%) Principal Software Engineer
9 6 (8.11%) Blockchain Developer
10 5 (6.76%) C Software Engineer
10 5 (6.76%) C/C++ Software Engineer
10 5 (6.76%) Senior C++ Software Engineer
10 5 (6.76%) Senior Software Engineer
10 5 (6.76%) Software Developer
11 4 (5.41%) Linux Engineer
Libraries, Frameworks & Software Standards
1 30 (40.54%) STL
2 29 (39.19%) Boost C++ Libraries
3 24 (32.43%) Qt
4 11 (14.86%) HTML
5 8 (10.81%) HTML5
6 6 (8.11%) J2EE
6 6 (8.11%) Pthreads
6 6 (8.11%) RESTful
7 5 (6.76%) JDBC
7 5 (6.76%) JNI
7 5 (6.76%) ODBC
8 3 (4.05%) JAXB
8 3 (4.05%) JMS
8 3 (4.05%) JSP
8 3 (4.05%) LEMP Stack
8 3 (4.05%) Node.js
8 3 (4.05%) REST
8 3 (4.05%) SAX
8 3 (4.05%) SOAP
8 3 (4.05%) WSDL
Miscellaneous
1 23 (31.08%) Field-Programmable Gate Array
2 20 (27.03%) Analytical Skills
3 18 (24.32%) Management Information System
4 12 (16.22%) Computer Science
5 6 (8.11%) Algorithms
5 6 (8.11%) Enterprise Software
5 6 (8.11%) Linux Command Line
6 3 (4.05%) Fintech
7 2 (2.70%) ASIC
8 1 (1.35%) Data Centre
8 1 (1.35%) Device Driver
8 1 (1.35%) Digital TV
8 1 (1.35%) Embedded Systems
8 1 (1.35%) iSeries
8 1 (1.35%) Smartphone
Operating Systems
1 36 (48.65%) Windows
2 21 (28.38%) Windows Embedded Compact
3 20 (27.03%) Linux
4 14 (18.92%) Unix
5 6 (8.11%) AIX
6 5 (6.76%) Solaris
7 2 (2.70%) FreeBSD
7 2 (2.70%) Mac OS X
8 1 (1.35%) Embedded Linux
8 1 (1.35%) Red Hat Enterprise Linux
Processes & Methodologies
1 35 (47.30%) Multithreading
2 34 (45.95%) Software Engineering
3 23 (31.08%) OOP
4 18 (24.32%) Data Encryption
4 18 (24.32%) Data Security
4 18 (24.32%) Network Optimisation
4 18 (24.32%) OO
5 17 (22.97%) Document Management
6 16 (21.62%) Multithreaded Programming
7 15 (20.27%) Embedded Software Development
7 15 (20.27%) OOD
7 15 (20.27%) SDLC
8 14 (18.92%) UML
9 13 (17.57%) Agile Software Development
10 10 (13.51%) Continuous Integration
11 8 (10.81%) Mathematics
12 6 (8.11%) API Design
12 6 (8.11%) BPMN
12 6 (8.11%) Microservices
12 6 (8.11%) RUP
Programming Languages
1 47 (63.51%) C++
2 30 (40.54%) C#
3 25 (33.78%) C
4 21 (28.38%) SQL
5 14 (18.92%) Embedded C++
6 13 (17.57%) Java
7 10 (13.51%) Python
8 9 (12.16%) Bash Shell
8 9 (12.16%) Shell Script
9 6 (8.11%) Fortran
9 6 (8.11%) PL/SQL
10 5 (6.76%) JavaScript
11 4 (5.41%) Perl
12 3 (4.05%) Go
12 3 (4.05%) Groovy
12 3 (4.05%) Ruby
12 3 (4.05%) Scala
13 2 (2.70%) PowerShell
14 1 (1.35%) F#
14 1 (1.35%) OCaml
Qualifications
1 37 (50.00%) Degree
2 6 (8.11%) Master's Degree
3 4 (5.41%) Computer Science Degree
4 3 (4.05%) Security Cleared
5 2 (2.70%) DV Cleared
6 1 (1.35%) PhD
6 1 (1.35%) RHCE
6 1 (1.35%) SC Cleared
Quality Assurance & Compliance
1 18 (24.32%) SLA
2 5 (6.76%) QA
System Software
1 6 (8.11%) Active Directory
1 6 (8.11%) NFS
2 2 (2.70%) Docker
2 2 (2.70%) VMware Infrastructure
3 1 (1.35%) Firmware
3 1 (1.35%) QEMU
Systems Management
1 3 (4.05%) Puppet
2 1 (1.35%) Ansible
2 1 (1.35%) Cobbler
2 1 (1.35%) Opscode Chef
2 1 (1.35%) Red Hat Satellite
Vendors
1 18 (24.32%) Xerox
2 12 (16.22%) Oracle
3 6 (8.11%) Cisco
3 6 (8.11%) F5
3 6 (8.11%) Juniper
4 3 (4.05%) Altova
4 3 (4.05%) Google
4 3 (4.05%) ILOG
4 3 (4.05%) Perforce
4 3 (4.05%) Splunk
4 3 (4.05%) VMware
5 2 (2.70%) SAP
6 1 (1.35%) IBM
6 1 (1.35%) Red Hat