Period
to 18 October 2018

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 October 2018 with a comparison to the same period in the previous 2 years.

Portable Operating System Interface (POSIX)
UK
6 months to
18 Oct 2018
Same period 2017 Same period 2016
Rank 1108 1115 1209
Rank change year-on-year +7 +94 +48
Permanent jobs citing POSIX 40 66 29
As % of all permanent IT jobs advertised in the UK 0.024% 0.038% 0.015%
As % of the Libraries, Frameworks & Software Standards category 0.061% 0.094% 0.039%
Number of salaries quoted 22 46 28
UK median annual salary £60,000 £53,500 £45,000
Median salary % change year-on-year +12.15% +18.89% -30.77%
10th Percentile £52,500 £32,000 £35,000
90th Percentile £126,250 £67,500 £90,000
UK excluding London median annual salary £60,000 £53,500 £42,500
% change year-on-year +12.15% +25.88% -29.17%

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 65,750 70,258 74,705
As % of all permanent IT jobs advertised in the UK 39.97% 40.18% 38.97%
Number of salaries quoted 54,366 58,132 64,743
UK median annual salary £50,500 £50,000 £47,500
Median salary % change year-on-year +1.00% +5.26% +5.56%
10th Percentile £31,250 £29,750 £28,750
90th Percentile £82,500 £77,500 £76,250
UK excluding London median annual salary £45,000 £42,500 £41,500
% change year-on-year +5.88% +2.41% +3.75%

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 October 2018.

Salary histogram for POSIX in the UK

POSIX
Top 6 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 October 2018. 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 +8 40 £60,000 +12.15% 7
London +59 26 £117,500 - 3
UK excluding London -29 14 £60,000 +12.15% 7
East of England -15 8 £57,500 +4.55% 1
South East +1 5 £60,000 +33.33% 3
South West -5 1 - -

For the 6 months to 18 October 2018, 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 with a requirement for POSIX.

1 32 (80.00%) Linux
2 31 (77.50%) C++
3 29 (72.50%) Multithreading
4 25 (62.50%) Python
5 21 (52.50%) CMake
6 20 (50.00%) Cryptocurrency
6 20 (50.00%) Windows
6 20 (50.00%) Java
7 18 (45.00%) Cryptography
7 18 (45.00%) Performance Testing
7 18 (45.00%) Blockchain
7 18 (45.00%) Multithreaded Programming
7 18 (45.00%) Bitcoin
7 18 (45.00%) Functional Testing
7 18 (45.00%) Test Automation
7 18 (45.00%) Pthreads
8 15 (37.50%) C
9 13 (32.50%) Software Engineering
10 8 (20.00%) Virtual Team
10 8 (20.00%) Hedge funds
11 7 (17.50%) Open Source
11 7 (17.50%) Boost C++ Libraries
11 7 (17.50%) Problem-Solving
11 7 (17.50%) Kubernetes
11 7 (17.50%) Computer Science
11 7 (17.50%) Unix
11 7 (17.50%) OOP
12 6 (15.00%) Red Hat
12 6 (15.00%) Fedora
12 6 (15.00%) C#

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:

Cloud Services
1 4 (10.00%) Amazon AWS
2 3 (7.50%) Amazon EC2
2 3 (7.50%) Amazon ELB
2 3 (7.50%) Amazon S3
2 3 (7.50%) Virtual Private Cloud
3 1 (2.50%) Cloud Computing
Communications & Networking
1 4 (10.00%) RS-232
1 4 (10.00%) RS-485
1 4 (10.00%) SNMP
Database & Business Intelligence
1 18 (45.00%) Blockchain
2 4 (10.00%) Apache Cassandra
2 4 (10.00%) NoSQL
2 4 (10.00%) PostgreSQL
Development Applications
1 21 (52.50%) CMake
2 3 (7.50%) Atlassian Bamboo
2 3 (7.50%) Clang
2 3 (7.50%) Cucumber
2 3 (7.50%) Git (software)
2 3 (7.50%) Gradle
2 3 (7.50%) Jenkins
2 3 (7.50%) JUnit
General
1 4 (10.00%) Publishing
2 1 (2.50%) Banking
2 1 (2.50%) Finance
Job Titles
1 25 (62.50%) Developer
2 23 (57.50%) C++ Developer
3 12 (30.00%) Blockchain Developer
4 7 (17.50%) Software Engineer
5 4 (10.00%) C++ Software Developer
5 4 (10.00%) Database Engineer
5 4 (10.00%) Embedded Engineer
5 4 (10.00%) Embedded Software Engineer
5 4 (10.00%) Senior Embedded Software Engineer
5 4 (10.00%) Senior Software Engineer
5 4 (10.00%) Software Developer
6 3 (7.50%) C Developer
6 3 (7.50%) C/C++ Developer
6 3 (7.50%) C/C++ Software Developer
6 3 (7.50%) DevOps Engineer
6 3 (7.50%) Integration Engineer
6 3 (7.50%) Senior DevOps
6 3 (7.50%) Senior DevOps Engineer
6 3 (7.50%) Senior Integration Engineer
7 1 (2.50%) IoT Software Engineer
Libraries, Frameworks & Software Standards
1 18 (45.00%) Pthreads
2 7 (17.50%) Boost C++ Libraries
3 6 (15.00%) FIX Protocol
3 6 (15.00%) JSON
3 6 (15.00%) Kafka
3 6 (15.00%) Protocol Buffers
3 6 (15.00%) WebSockets
3 6 (15.00%) ZeroMQ
4 4 (10.00%) .NET
5 2 (5.00%) STL
6 1 (2.50%) HTML
6 1 (2.50%) HTML5
6 1 (2.50%) Qt
6 1 (2.50%) REST
Miscellaneous
1 18 (45.00%) Bitcoin
2 8 (20.00%) Hedge funds
2 8 (20.00%) Virtual Team
3 7 (17.50%) Computer Science
4 6 (15.00%) Data Structures
5 5 (12.50%) Field-Programmable Gate Array
6 4 (10.00%) Analytical Skills
6 4 (10.00%) Public Cloud
7 3 (7.50%) Management Information System
8 1 (2.50%) Self-Motivation
Operating Systems
1 32 (80.00%) Linux
2 20 (50.00%) Windows
3 7 (17.50%) Unix
4 6 (15.00%) CentOS
4 6 (15.00%) Fedora
4 6 (15.00%) Red Hat Enterprise Linux
5 1 (2.50%) Android
5 1 (2.50%) Apple iOS
5 1 (2.50%) Mac OS X
5 1 (2.50%) Windows Embedded Compact
Processes & Methodologies
1 29 (72.50%) Multithreading
2 20 (50.00%) Cryptocurrency
3 18 (45.00%) Cryptography
3 18 (45.00%) Functional Testing
3 18 (45.00%) Multithreaded Programming
3 18 (45.00%) Performance Testing
3 18 (45.00%) Test Automation
4 13 (32.50%) Software Engineering
5 7 (17.50%) OOP
5 7 (17.50%) Open Source
5 7 (17.50%) Problem-Solving
6 6 (15.00%) Analytics
7 4 (10.00%) Agile Software Development
7 4 (10.00%) Continuous Improvement
7 4 (10.00%) Continuous Integration
7 4 (10.00%) Data Security
7 4 (10.00%) Mentoring
7 4 (10.00%) Project Management
7 4 (10.00%) Software Testing
7 4 (10.00%) Time Management
Programming Languages
1 31 (77.50%) C++
2 25 (62.50%) Python
3 20 (50.00%) Java
4 15 (37.50%) C
5 6 (15.00%) C#
6 3 (7.50%) Shell Script
7 2 (5.00%) Go
7 2 (5.00%) SQL
8 1 (2.50%) Scala
Qualifications
1 1 (2.50%) Degree
1 1 (2.50%) DV Cleared
1 1 (2.50%) Security Cleared
Quality Assurance & Compliance
1 4 (10.00%) QA
System Software
1 4 (10.00%) Firmware
2 3 (7.50%) Docker
Systems Management
1 7 (17.50%) Kubernetes
2 4 (10.00%) Grafana
3 3 (7.50%) Ansible
3 3 (7.50%) Puppet
4 1 (2.50%) Prometheus
Vendors
1 6 (15.00%) Red Hat
2 4 (10.00%) PagerDuty
3 1 (2.50%) Oracle