Period
to 19 October 2019

The following table provides summary statistics for contract job vacancies with a requirement for POSIX skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited POSIX over the 6 months to 19 October 2019 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Portable Operating System Interface (POSIX)
UK
6 months to
19 Oct 2019
Same period 2018 Same period 2017
Rank 806 886 882
Rank change year-on-year +80 -4 +25
Contract jobs citing POSIX 6 10 9
As % of all contract IT jobs advertised in the UK 0.007% 0.010% 0.009%
As % of the Libraries, Frameworks & Software Standards category 0.023% 0.028% 0.028%
Number of daily rates quoted 1 6 5
UK median daily rate £325 £363 £550
Median daily rate % change year-on-year -10.34% -34.09% +10.00%
10th Percentile £313 £313 £405
90th Percentile £338 £478 £620
UK excluding London median daily rate £325 £363 £550
% change year-on-year -10.34% -34.09% +10.00%
Number of hourly rates quoted 1 0 0
UK median hourly rate £40.50 - -
UK excluding London median hourly rate - - -

POSIX is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
UK
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 26,107 35,983 32,051
As % of all contract IT jobs advertised in the UK 30.91% 34.90% 32.23%
Number of daily rates quoted 18,158 25,322 22,487
UK median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £338 £325 £313
90th Percentile £650 £638 £625
UK excluding London median daily rate £438 £425 £400
% change year-on-year +2.94% +6.25% +3.23%
Number of hourly rates quoted 280 322 366
UK median hourly rate £43.75 £41.53 £40.00
Median hourly rate % change year-on-year +5.35% +3.83% +6.67%
10th Percentile £20.26 £15.30 £18.25
90th Percentile £70.00 £59.88 £52.50
UK excluding London median hourly rate £42.50 £41.00 £40.31
% change year-on-year +3.66% +1.72% +11.96%

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
Contractor Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing POSIX.

Contractor daily rate trend for POSIX in the UK

POSIX
Contractor Hourly Rate Trend

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing POSIX.

Contractor hourly rate trend for POSIX in the UK

POSIX
Top 4 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing POSIX within the UK over the 6 months to 19 October 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +86 6 £325 -30.67% 5
London - 4 - -
UK excluding London +55 1 £325 -10.34% 5
South East +30 1 £325 -30.67% 5

For the 6 months to 19 October 2019, IT contractor 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 contract job ads with a requirement for POSIX.

1 6 (100.00%) Linux
1 6 (100.00%) C++
2 5 (83.33%) Windows
2 5 (83.33%) Multithreading
3 4 (66.67%) Git (software)
3 4 (66.67%) Test Automation
3 4 (66.67%) Pthreads
3 4 (66.67%) Cryptography
3 4 (66.67%) Performance Testing
3 4 (66.67%) Atlassian Bamboo
3 4 (66.67%) RESTful
3 4 (66.67%) Boost C++ Libraries
3 4 (66.67%) NoSQL
3 4 (66.67%) CMake
3 4 (66.67%) Functional Testing
3 4 (66.67%) Jenkins
3 4 (66.67%) Ansible
3 4 (66.67%) Blockchain
3 4 (66.67%) Multithreaded Programming
3 4 (66.67%) Java
3 4 (66.67%) SQL
3 4 (66.67%) STL
3 4 (66.67%) Python
4 2 (33.33%) Embedded C
4 2 (33.33%) Software Engineering
4 2 (33.33%) C
4 2 (33.33%) Device Driver
4 2 (33.33%) Device Driver Development
5 1 (16.67%) Yocto
5 1 (16.67%) 802.1X

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:

Communications & Networking
1 1 (16.67%) DHCP
1 1 (16.67%) Ethernet
1 1 (16.67%) HTTP
1 1 (16.67%) IGMP
1 1 (16.67%) Internet
1 1 (16.67%) Q.931
1 1 (16.67%) RTCP
1 1 (16.67%) RTP
1 1 (16.67%) SNMP
1 1 (16.67%) TCP/IP
1 1 (16.67%) VLAN
1 1 (16.67%) VoIP
1 1 (16.67%) Wireshark
Database & Business Intelligence
1 4 (66.67%) Blockchain
1 4 (66.67%) NoSQL
Development Applications
1 4 (66.67%) Atlassian Bamboo
1 4 (66.67%) CMake
1 4 (66.67%) Git (software)
1 4 (66.67%) Jenkins
2 1 (16.67%) Subversion
General
1 1 (16.67%) Finance
1 1 (16.67%) Telecoms
Job Titles
1 4 (66.67%) Blockchain Developer
1 4 (66.67%) C++ Developer
1 4 (66.67%) Developer
2 2 (33.33%) Embedded Engineer
2 2 (33.33%) Embedded Software Engineer
2 2 (33.33%) Software Engineer
3 1 (16.67%) Blockchain Lead
3 1 (16.67%) C Software Engineer
3 1 (16.67%) Embedded C Engineer
3 1 (16.67%) Embedded C Software Engineer
3 1 (16.67%) Lead Developer
Libraries, Frameworks & Software Standards
1 4 (66.67%) Boost C++ Libraries
1 4 (66.67%) Pthreads
1 4 (66.67%) RESTful
1 4 (66.67%) STL
2 1 (16.67%) 802.1X
2 1 (16.67%) Qt
2 1 (16.67%) Yocto
Miscellaneous
1 2 (33.33%) Device Driver
Operating Systems
1 6 (100.00%) Linux
2 5 (83.33%) Windows
3 1 (16.67%) Embedded Linux
3 1 (16.67%) uClinux
Processes & Methodologies
1 5 (83.33%) Multithreading
2 4 (66.67%) Cryptography
2 4 (66.67%) Functional Testing
2 4 (66.67%) Multithreaded Programming
2 4 (66.67%) Performance Testing
2 4 (66.67%) Test Automation
3 2 (33.33%) Device Driver Development
3 2 (33.33%) Software Engineering
4 1 (16.67%) Architectural Design
4 1 (16.67%) Open Source
Programming Languages
1 6 (100.00%) C++
2 4 (66.67%) Java
2 4 (66.67%) Python
2 4 (66.67%) SQL
3 2 (33.33%) C
3 2 (33.33%) Embedded C
4 1 (16.67%) Embedded C++
Systems Management
1 4 (66.67%) Ansible
Vendors
1 1 (16.67%) Freescale