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 3 months to 27 June 2017 with a comparison to the same period in the previous 2 years.

Portable Operating System Interface (POSIX)
UK / England
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 832 881 926
Rank change year-on-year +49 +45  
Permanent jobs citing POSIX 34 30 27
As % of all permanent IT jobs advertised in England 0.041% 0.032% 0.026%
As % of the Libraries, Frameworks & Software Standards category 0.099% 0.083% 0.068%
Number of salaries quoted 29 27 23
Median salary £45,000 £47,500 £70,000
Median salary % change year-on-year -5.26% -32.14%  
90% offered a salary of more than £31,700 £36,500 £28,500
10% offered a salary of more than £60,000 £56,000 £92,500
UK excluding London median salary £45,000 £47,500 £55,000
% change year-on-year -5.26% -13.63%  

POSIX is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in England with a requirement for industry standards, technical specifications and software library and framework skills.

Software Library & Framework Skills
England
Permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 34311 36257 39433
As % of all permanent IT job vacancies advertised in England 40.96% 39.20% 38.43%
Number of salaries quoted 28955 31914 34055
Median salary £47,500 £46,000 £45,000
Median salary % change year-on-year +3.26% +2.22%  
90% offered a salary of more than £32,500 £31,500 £30,000
10% offered a salary of more than £70,000 £65,000 £70,000
UK excluding London median salary £42,500 £40,000 £40,000
% change year-on-year +6.25% -  

POSIX
Job Vacancy Trend in England

The job posting trend of jobs advertised in England citing POSIX as a proportion of all permanent or contract IT jobs with a match in the Libraries, Frameworks & Software Standards category.

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 3 months to 27 June 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 3 months to 27 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
East of England -8 17 £50,000 +5.26% 2
South East +49 11 £45,000 +20.00%
London +31 4 £52,500 +16.66%
South West - 2 £38,750 - 1
POSIX
UK

For the 6 months to 27 June 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 48 (69.57%) C++
2 43 (62.32%) C
3 40 (57.97%) Degree
4 38 (55.07%) Software Engineering
4 38 (55.07%) Python
5 34 (49.28%) Linux
6 30 (43.48%) Computer Science
7 24 (34.78%) Mathematics
8 23 (33.33%) Windows
9 22 (31.88%) Perl
10 21 (30.43%) OO
10 21 (30.43%) TCP/IP
11 20 (28.99%) SQL
12 19 (27.54%) Shell Script
13 18 (26.09%) Agile Software Development
13 18 (26.09%) C#
14 17 (24.64%) Jenkins
15 16 (23.19%) Java
15 16 (23.19%) Unix
15 16 (23.19%) Finance
16 15 (21.74%) STL
16 15 (21.74%) Continuous Integration
16 15 (21.74%) Embedded Systems
16 15 (21.74%) Embedded Software Development
16 15 (21.74%) Computer Science Degree
17 14 (20.29%) Multithreading
17 14 (20.29%) HTML
17 14 (20.29%) HTTP
18 13 (18.84%) Bluetooth
18 13 (18.84%) HTTPS

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 8 (11.59%) CMS
1 8 (11.59%) Tomcat
2 7 (10.14%) JBoss
2 7 (10.14%) Jetty
2 7 (10.14%) nginx
2 7 (10.14%) WebLogic
2 7 (10.14%) WebSphere
3 2 (2.90%) SilverStripe
3 2 (2.90%) WordPress
4 1 (1.45%) OpenStack
Communications & Networking
1 21 (30.43%) TCP/IP
2 14 (20.29%) HTTP
3 13 (18.84%) Bluetooth
3 13 (18.84%) HTTPS
3 13 (18.84%) Wi-Fi
3 13 (18.84%) Wireless
4 9 (13.04%) DNS
4 9 (13.04%) Firewall
4 9 (13.04%) FTP
4 9 (13.04%) Intrusion Detection
5 8 (11.59%) SAN
6 7 (10.14%) SNMP
7 6 (8.70%) BGP
7 6 (8.70%) DHCP
7 6 (8.70%) LAN
7 6 (8.70%) OSPF
7 6 (8.70%) Telnet
7 6 (8.70%) VLAN
7 6 (8.70%) VPN
7 6 (8.70%) WAN
Database & Business Intelligence
1 8 (11.59%) MySQL
1 8 (11.59%) PostgreSQL
1 8 (11.59%) Relational Database
2 7 (10.14%) InterSystems Cache
2 7 (10.14%) Oracle Database
2 7 (10.14%) Oracle Database 11g
3 1 (1.45%) Apache Cassandra
3 1 (1.45%) CouchDB
3 1 (1.45%) Data Mining
3 1 (1.45%) MariaDB
3 1 (1.45%) MongoDB
3 1 (1.45%) Neo4j
Development Applications
1 17 (24.64%) Jenkins
2 13 (18.84%) Git (software)
3 12 (17.39%) Eclipse
4 10 (14.49%) Subversion
5 8 (11.59%) GDB
5 8 (11.59%) JIRA
6 7 (10.14%) Ant
6 7 (10.14%) CppUnit
6 7 (10.14%) Hudson
6 7 (10.14%) JUnit
6 7 (10.14%) Maven
6 7 (10.14%) Sonatype Nexus
6 7 (10.14%) Valgrind
6 7 (10.14%) XMLSpy
7 5 (7.25%) Atlassian Bamboo
8 3 (4.35%) GCC
8 3 (4.35%) Visual Studio
9 2 (2.90%) SonarQube
General
1 16 (23.19%) Finance
2 7 (10.14%) Banking
3 6 (8.70%) Back Office
3 6 (8.70%) Military
4 5 (7.25%) Telecoms
5 2 (2.90%) Marketing
6 1 (1.45%) Games
Job Titles
1 28 (40.58%) Software Engineer
2 20 (28.99%) Developer
3 15 (21.74%) Embedded Engineer
3 15 (21.74%) Embedded Software Engineer
4 13 (18.84%) Graduate
4 13 (18.84%) Graduate Embedded Software Engineer
4 13 (18.84%) Graduate Software Engineer
5 11 (15.94%) C++ Developer
6 10 (14.49%) C++ Software Engineer
7 9 (13.04%) Administrator
8 8 (11.59%) Network Administrator
9 7 (10.14%) Linux Engineer
9 7 (10.14%) Senior C++ Software Engineer
9 7 (10.14%) Senior Software Engineer
10 6 (8.70%) IT Administrator
10 6 (8.70%) Linux Developer
10 6 (8.70%) Software Developer
11 5 (7.25%) DevOps Engineer
11 5 (7.25%) Senior C++ Developer
11 5 (7.25%) Senior Developer
Libraries, Frameworks & Software Standards
1 15 (21.74%) STL
2 14 (20.29%) HTML
3 13 (18.84%) Boost C++ Libraries
4 10 (14.49%) CSS
5 8 (11.59%) Node.js
5 8 (11.59%) Web Services
6 7 (10.14%) Apache OpenJPA
6 7 (10.14%) Drools
6 7 (10.14%) HTML5
6 7 (10.14%) Java EE
6 7 (10.14%) JAX-WS
6 7 (10.14%) JPA
6 7 (10.14%) JRules
6 7 (10.14%) JSF
6 7 (10.14%) Pthreads
6 7 (10.14%) REST
6 7 (10.14%) RESTful
6 7 (10.14%) Spring
6 7 (10.14%) XML
6 7 (10.14%) XSD
Miscellaneous
1 30 (43.48%) Computer Science
2 15 (21.74%) Embedded Systems
3 10 (14.49%) Management Information System
4 9 (13.04%) Analytical Skills
5 8 (11.59%) Algorithms
6 7 (10.14%) Enterprise Software
7 5 (7.25%) Field-Programmable Gate Array
8 3 (4.35%) Linux Command Line
9 2 (2.90%) Data Centre
9 2 (2.90%) Device Driver
10 1 (1.45%) Data Structures
10 1 (1.45%) e-Health
10 1 (1.45%) Equities
10 1 (1.45%) Fixed Income
10 1 (1.45%) Foreign Exchange (FX)
10 1 (1.45%) Grid Computing
10 1 (1.45%) iSeries
Operating Systems
1 34 (49.28%) Linux
2 23 (33.33%) Windows
3 16 (23.19%) Unix
4 5 (7.25%) Windows Embedded Compact
5 4 (5.80%) Red Hat Enterprise Linux
6 3 (4.35%) CentOS
6 3 (4.35%) FreeBSD
6 3 (4.35%) HPUX
6 3 (4.35%) Mac OS X
6 3 (4.35%) SUSE
7 2 (2.90%) Mac OS
8 1 (1.45%) AIX
8 1 (1.45%) Debian
8 1 (1.45%) Embedded Linux
Processes & Methodologies
1 38 (55.07%) Software Engineering
2 24 (34.78%) Mathematics
3 21 (30.43%) OO
4 18 (26.09%) Agile Software Development
5 15 (21.74%) Continuous Integration
5 15 (21.74%) Embedded Software Development
6 14 (20.29%) Multithreading
7 13 (18.84%) Computer Architecture
8 12 (17.39%) Open Source
9 10 (14.49%) DevOps
9 10 (14.49%) Memory Management
9 10 (14.49%) UML
10 9 (13.04%) Analytics
10 9 (13.04%) OOD
11 8 (11.59%) SDLC
12 7 (10.14%) API Design
12 7 (10.14%) ETL
12 7 (10.14%) Microservices
12 7 (10.14%) RUP
12 7 (10.14%) Workflow
Programming Languages
1 48 (69.57%) C++
2 43 (62.32%) C
3 38 (55.07%) Python
4 22 (31.88%) Perl
5 20 (28.99%) SQL
6 19 (27.54%) Shell Script
7 18 (26.09%) C#
8 16 (23.19%) Java
9 13 (18.84%) Bash Shell
9 13 (18.84%) JavaScript
10 10 (14.49%) Ruby
11 8 (11.59%) Go
12 7 (10.14%) Groovy
12 7 (10.14%) Scala
13 6 (8.70%) Fortran
13 6 (8.70%) PL/SQL
14 3 (4.35%) AWK
14 3 (4.35%) Haskell
14 3 (4.35%) Korn
14 3 (4.35%) PowerShell
Qualifications
1 40 (57.97%) Degree
2 15 (21.74%) Computer Science Degree
3 6 (8.70%) Master's Degree
4 4 (5.80%) Security Cleared
5 3 (4.35%) DV Cleared
6 2 (2.90%) PhD
7 1 (1.45%) CISSP
7 1 (1.45%) GSEC
7 1 (1.45%) RHCE
7 1 (1.45%) SC Cleared
Quality Assurance & Compliance
1 6 (8.70%) SLA
System Software
1 13 (18.84%) Firmware
2 8 (11.59%) VMware Infrastructure
3 6 (8.70%) Docker
4 3 (4.35%) NFS
5 2 (2.90%) QEMU
6 1 (1.45%) Active Directory
6 1 (1.45%) KVM
6 1 (1.45%) LXC
6 1 (1.45%) Slurm Workload Manager
6 1 (1.45%) Xen
Systems Management
1 6 (8.70%) Puppet
2 1 (1.45%) Ansible
2 1 (1.45%) Cobbler
2 1 (1.45%) Mesos
2 1 (1.45%) Opscode Chef
2 1 (1.45%) Red Hat Satellite
2 1 (1.45%) Simpana
Vendors
1 9 (13.04%) Oracle
1 9 (13.04%) VMware
2 7 (10.14%) Altova
2 7 (10.14%) Google
2 7 (10.14%) ILOG
2 7 (10.14%) Splunk
3 6 (8.70%) Perforce
3 6 (8.70%) Xerox
4 4 (5.80%) Red Hat
5 3 (4.35%) HP
5 3 (4.35%) Microsoft
5 3 (4.35%) Sun
6 2 (2.90%) Salesforce Marketing Cloud
6 2 (2.90%) Salesforce.com
7 1 (1.45%) CommVault
7 1 (1.45%) IBM
7 1 (1.45%) McAfee
7 1 (1.45%) Pegasus
Cambridge, Cambridgeshire
Evolution Recruitment Solutions
Salary: 45,000 to 55,000 + Bonus
Posted: 7 hours ago
Cambridgeshire
IT Connections
Salary: to £60K
Posted: 3 days ago
Bath, Avon
Redrock Consulting Ltd
Salary: £30000 - £45000 per annum + Benefits + Bonus
Posted: 6 days ago