Period
to 18 November 2017

The following table provides summary statistics for permanent job vacancies 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
6 months to
18 Nov 2017
Same period 2016 Same period 2015
Rank 1100 1197 1257
Rank change year-on-year +97 +60 +35
Permanent jobs citing POSIX 77 25 57
As % of all permanent IT jobs advertised in the UK 0.043% 0.013% 0.026%
As % of the Libraries, Frameworks & Software Standards category 0.11% 0.034% 0.069%
Number of salaries quoted 55 21 41
UK median annual salary £50,000 £47,500 £62,500
Median salary % change year-on-year +5.26% -24.00% +38.89%
10th Percentile £32,000 £35,000 £47,500
90th Percentile £67,500 £90,000 £96,250
UK excluding London median annual salary £50,000 £42,500 £60,000
% change year-on-year +17.65% -29.17% +37.14%

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 with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
UK
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 71782 73986 83137
As % of all permanent IT jobs advertised in the UK 40.12% 38.96% 37.96%
Number of salaries quoted 59611 64205 71075
UK 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 £77,500 £76,250 £73,750
UK excluding London median annual salary £42,500 £42,000 £40,000
% change year-on-year +1.19% +5.00% -

POSIX
Job Vacancy Trend

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

Job vacancy trend for POSIX in the UK

POSIX
Salary Trend

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

Salary trend for POSIX in the UK

POSIX
Salary Histogram

The salary distribution of IT jobs citing POSIX over the 6 months to 18 November 2017.

Salary histogram for POSIX in the UK

POSIX
Top 5 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing POSIX within the UK 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
England +79 74 £50,000 +17.65%
UK excluding London +119 68 £50,000 +17.65%
East of England +58 51 £55,000 +15.79%
South East +46 17 £48,750 +27.45%
London -4 6 - -

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 with a requirement for POSIX.

1 50 (64.94%) C++
2 39 (50.65%) Windows
3 38 (49.35%) Degree
4 37 (48.05%) Multithreading
5 36 (46.75%) Software Engineering
6 31 (40.26%) C#
7 30 (38.96%) STL
8 29 (37.66%) Boost C++ Libraries
9 28 (36.36%) C
9 28 (36.36%) HTTP
9 28 (36.36%) TCP/IP
10 27 (35.06%) Finance
11 24 (31.17%) Firewall
11 24 (31.17%) FTP
11 24 (31.17%) DNS
11 24 (31.17%) Qt
11 24 (31.17%) Intrusion Detection
12 23 (29.87%) Field-Programmable Gate Array
12 23 (29.87%) Linux
12 23 (29.87%) OOP
13 22 (28.57%) HTTPS
14 21 (27.27%) SQL
14 21 (27.27%) Windows Embedded Compact
15 20 (25.97%) OO
15 20 (25.97%) WAN
15 20 (25.97%) Analytical Skills
16 18 (23.38%) Network Optimisation
16 18 (23.38%) Xerox
16 18 (23.38%) Data Encryption
16 18 (23.38%) LAN

POSIX
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 18 (23.38%) CMS
2 3 (3.90%) JBoss
2 3 (3.90%) Jetty
2 3 (3.90%) nginx
2 3 (3.90%) Tomcat
2 3 (3.90%) WebLogic
2 3 (3.90%) WebSphere
Cloud Services
1 2 (2.60%) SaaS
Communications & Networking
1 28 (36.36%) HTTP
1 28 (36.36%) TCP/IP
2 24 (31.17%) DNS
2 24 (31.17%) Firewall
2 24 (31.17%) FTP
2 24 (31.17%) Intrusion Detection
3 22 (28.57%) HTTPS
4 20 (25.97%) WAN
5 18 (23.38%) BGP
5 18 (23.38%) DHCP
5 18 (23.38%) HSRP
5 18 (23.38%) LAN
5 18 (23.38%) OSPF
5 18 (23.38%) tcpdump
5 18 (23.38%) Telnet
5 18 (23.38%) VLAN
5 18 (23.38%) VPN
5 18 (23.38%) Wireshark
6 7 (9.09%) iSCSI
6 7 (9.09%) SAN
Database & Business Intelligence
1 13 (16.88%) PostgreSQL
1 13 (16.88%) Relational Database
2 7 (9.09%) RDBMS
2 7 (9.09%) SQL Server
3 6 (7.79%) Blockchain
3 6 (7.79%) MySQL
3 6 (7.79%) Oracle Database
3 6 (7.79%) Oracle Database 11g
4 3 (3.90%) InterSystems Cache
Development Applications
1 12 (15.58%) Subversion
2 10 (12.99%) CppUnit
3 9 (11.69%) JIRA
4 5 (6.49%) Eclipse
4 5 (6.49%) Git (software)
4 5 (6.49%) Jenkins
5 3 (3.90%) Ant
5 3 (3.90%) GDB
5 3 (3.90%) Hudson
5 3 (3.90%) JUnit
5 3 (3.90%) Maven
5 3 (3.90%) Sonatype Nexus
5 3 (3.90%) Valgrind
5 3 (3.90%) XMLSpy
6 2 (2.60%) Atlassian Bamboo
6 2 (2.60%) Visual Studio
7 1 (1.30%) Burp Suite
7 1 (1.30%) Metasploit
General
1 27 (35.06%) Finance
2 17 (22.08%) Back Office
2 17 (22.08%) Military
3 3 (3.90%) Banking
4 2 (2.60%) Electronics
4 2 (2.60%) Manufacturing
4 2 (2.60%) Marketing
4 2 (2.60%) Telecoms
5 1 (1.30%) Dutch Language
Job Titles
1 29 (37.66%) Software Engineer
2 26 (33.77%) C++ Software Engineer
3 23 (29.87%) Administrator
4 22 (28.57%) Network Administrator
5 18 (23.38%) IT Administrator
6 15 (19.48%) Embedded Engineer
7 14 (18.18%) Developer
7 14 (18.18%) Embedded C++ Engineer
7 14 (18.18%) Embedded C++ Software Engineer
7 14 (18.18%) Embedded Software Engineer
8 11 (14.29%) Principal Engineer
8 11 (14.29%) Principal Software Engineer
9 9 (11.69%) C++ Developer
10 7 (9.09%) C Software Engineer
10 7 (9.09%) C/C++ Software Engineer
11 6 (7.79%) Blockchain Developer
12 5 (6.49%) Senior C++ Software Engineer
12 5 (6.49%) Senior Software Engineer
12 5 (6.49%) Software Developer
13 4 (5.19%) Linux Engineer
Libraries, Frameworks & Software Standards
1 30 (38.96%) STL
2 29 (37.66%) Boost C++ Libraries
3 24 (31.17%) Qt
4 12 (15.58%) HTML
5 8 (10.39%) HTML5
6 7 (9.09%) JDBC
6 7 (9.09%) JNI
6 7 (9.09%) ODBC
7 6 (7.79%) J2EE
7 6 (7.79%) Pthreads
7 6 (7.79%) RESTful
8 4 (5.19%) REST
8 4 (5.19%) SOAP
8 4 (5.19%) XML
9 3 (3.90%) DOM
9 3 (3.90%) JMS
9 3 (3.90%) Web Services
9 3 (3.90%) WSDL
9 3 (3.90%) XSD
9 3 (3.90%) XSLT
Miscellaneous
1 23 (29.87%) Field-Programmable Gate Array
2 20 (25.97%) Analytical Skills
3 18 (23.38%) Management Information System
4 13 (16.88%) Computer Science
5 6 (7.79%) Algorithms
5 6 (7.79%) Enterprise Software
5 6 (7.79%) Linux Command Line
6 3 (3.90%) Fintech
7 2 (2.60%) ASIC
8 1 (1.30%) Data Centre
8 1 (1.30%) Device Driver
8 1 (1.30%) Digital TV
8 1 (1.30%) Embedded Systems
8 1 (1.30%) iSeries
8 1 (1.30%) SCADA
8 1 (1.30%) Smartphone
Operating Systems
1 39 (50.65%) Windows
2 23 (29.87%) Linux
3 21 (27.27%) Windows Embedded Compact
4 16 (20.78%) Unix
5 8 (10.39%) AIX
6 7 (9.09%) Solaris
7 2 (2.60%) FreeBSD
7 2 (2.60%) Mac OS X
8 1 (1.30%) Embedded Linux
8 1 (1.30%) Kali Linux
8 1 (1.30%) Red Hat Enterprise Linux
Processes & Methodologies
1 37 (48.05%) Multithreading
2 36 (46.75%) Software Engineering
3 23 (29.87%) OOP
4 20 (25.97%) OO
5 18 (23.38%) Data Encryption
5 18 (23.38%) Data Security
5 18 (23.38%) Network Optimisation
6 17 (22.08%) Document Management
6 17 (22.08%) SDLC
7 16 (20.78%) Multithreaded Programming
8 15 (19.48%) Agile Software Development
8 15 (19.48%) Embedded Software Development
8 15 (19.48%) OOD
9 14 (18.18%) UML
10 10 (12.99%) Continuous Integration
11 8 (10.39%) Mathematics
12 7 (9.09%) Scenario Testing
13 6 (7.79%) API Design
13 6 (7.79%) BPMN
13 6 (7.79%) Microservices
Programming Languages
1 50 (64.94%) C++
2 31 (40.26%) C#
3 28 (36.36%) C
4 21 (27.27%) SQL
5 16 (20.78%) Java
6 14 (18.18%) Embedded C++
7 11 (14.29%) Python
8 9 (11.69%) Bash Shell
8 9 (11.69%) Shell Script
9 6 (7.79%) Fortran
9 6 (7.79%) JavaScript
9 6 (7.79%) PL/SQL
10 4 (5.19%) Perl
10 4 (5.19%) Ruby
11 3 (3.90%) Go
11 3 (3.90%) Groovy
11 3 (3.90%) Scala
12 2 (2.60%) PowerShell
13 1 (1.30%) F#
13 1 (1.30%) OCaml
Qualifications
1 38 (49.35%) Degree
2 7 (9.09%) Master's Degree
3 4 (5.19%) Computer Science Degree
4 3 (3.90%) Security Cleared
5 2 (2.60%) DV Cleared
6 1 (1.30%) GIAC
6 1 (1.30%) GPEN
6 1 (1.30%) GWAPT
6 1 (1.30%) GXPN
6 1 (1.30%) OSCE
6 1 (1.30%) OSCP
6 1 (1.30%) PhD
6 1 (1.30%) RHCE
6 1 (1.30%) SC Cleared
Quality Assurance & Compliance
1 18 (23.38%) SLA
2 7 (9.09%) QA
System Software
1 6 (7.79%) Active Directory
1 6 (7.79%) NFS
2 2 (2.60%) Docker
2 2 (2.60%) VMware Infrastructure
3 1 (1.30%) Firmware
3 1 (1.30%) QEMU
Systems Management
1 3 (3.90%) Puppet
2 1 (1.30%) Ansible
2 1 (1.30%) Cobbler
2 1 (1.30%) Nmap
2 1 (1.30%) Opscode Chef
2 1 (1.30%) Red Hat Satellite
Vendors
1 18 (23.38%) Xerox
2 14 (18.18%) Oracle
3 6 (7.79%) Cisco
3 6 (7.79%) F5
3 6 (7.79%) Juniper
4 3 (3.90%) Altova
4 3 (3.90%) Google
4 3 (3.90%) ILOG
4 3 (3.90%) Perforce
4 3 (3.90%) Splunk
4 3 (3.90%) VMware
5 2 (2.60%) SAP
6 1 (1.30%) IBM
6 1 (1.30%) Microsoft
6 1 (1.30%) Red Hat