Period
to 15 December 2018

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

Portable Operating System Interface (POSIX)
UK > England
6 months to
15 Dec 2018
Same period 2017 Same period 2016
Rank 1090 1116 1196
Rank change year-on-year +26 +80 +43
Permanent jobs citing POSIX 24 65 16
As % of all permanent IT jobs advertised in England 0.016% 0.039% 0.009%
As % of the Libraries, Frameworks & Software Standards category 0.041% 0.096% 0.023%
Number of salaries quoted 11 45 10
England median annual salary £67,500 £52,500 £41,250
Median salary % change year-on-year +28.57% +27.27% -31.25%
10th Percentile £52,500 £32,000 £35,000
90th Percentile £150,000 £67,500 £71,250
UK median annual salary £67,500 £52,500 £42,500
% change year-on-year +28.57% +23.53% -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 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 58,180 67,723 68,687
As % of all permanent IT jobs advertised in England 39.60% 40.29% 39.27%
Number of salaries quoted 48,134 56,862 59,850
England median annual salary £52,500 £50,000 £47,500
Median salary % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £31,500 £30,000 £29,000
90th Percentile £85,000 £78,750 £77,500
UK median annual salary £52,500 £50,000 £47,500
% change year-on-year +5.00% +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 15 December 2018.

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 15 December 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
London +59 19 £75,000 -
East of England 0 4 £57,500 - 1
South East +4 1 £42,500 -15.00% 1
POSIX
UK

For the 6 months to 15 December 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 across the England region with a requirement for POSIX.

1 21 (87.50%) Linux
1 21 (87.50%) Python
2 19 (79.17%) Java
3 18 (75.00%) C++
4 17 (70.83%) Windows
4 17 (70.83%) Multithreading
4 17 (70.83%) Pthreads
4 17 (70.83%) CMake
4 17 (70.83%) Blockchain
4 17 (70.83%) Multithreaded Programming
5 16 (66.67%) Cryptocurrency
5 16 (66.67%) Bitcoin
6 15 (62.50%) Functional Testing
6 15 (62.50%) Performance Testing
6 15 (62.50%) Test Automation
6 15 (62.50%) Cryptography
7 9 (37.50%) C
8 6 (25.00%) Open Source
9 5 (20.83%) Virtual Team
10 4 (16.67%) Kubernetes
10 4 (16.67%) Unix
11 3 (12.50%) Git (software)
11 3 (12.50%) Atlassian Bamboo
11 3 (12.50%) Ansible
11 3 (12.50%) NoSQL
11 3 (12.50%) Amazon AWS
11 3 (12.50%) Jenkins
12 2 (8.33%) Amazon ELB
12 2 (8.33%) Go
12 2 (8.33%) Continuous Improvement

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:

Cloud Services
1 3 (12.50%) Amazon AWS
2 2 (8.33%) Amazon EC2
2 2 (8.33%) Amazon ELB
2 2 (8.33%) Amazon S3
2 2 (8.33%) Virtual Private Cloud
3 1 (4.17%) Cloud Computing
Communications & Networking
1 2 (8.33%) SNMP
Database & Business Intelligence
1 17 (70.83%) Blockchain
2 3 (12.50%) NoSQL
3 2 (8.33%) Apache Cassandra
3 2 (8.33%) PostgreSQL
Development Applications
1 17 (70.83%) CMake
2 3 (12.50%) Atlassian Bamboo
2 3 (12.50%) Git (software)
2 3 (12.50%) Jenkins
3 2 (8.33%) Clang
3 2 (8.33%) Cucumber
3 2 (8.33%) Gradle
3 2 (8.33%) JUnit
General
1 2 (8.33%) Publishing
2 1 (4.17%) Banking
Job Titles
1 17 (70.83%) Developer
2 15 (62.50%) C++ Developer
3 14 (58.33%) Blockchain Developer
4 7 (29.17%) Software Developer
5 6 (25.00%) C++ Software Developer
6 4 (16.67%) C Developer
6 4 (16.67%) C/C++ Developer
6 4 (16.67%) C/C++ Software Developer
7 2 (8.33%) Database Engineer
7 2 (8.33%) DevOps Engineer
7 2 (8.33%) Integration Engineer
7 2 (8.33%) Senior DevOps
7 2 (8.33%) Senior DevOps Engineer
7 2 (8.33%) Senior Integration Engineer
7 2 (8.33%) Software Engineer
8 1 (4.17%) C++ Software Engineer
8 1 (4.17%) IoT Software Engineer
8 1 (4.17%) Senior C++ Developer
8 1 (4.17%) Senior Developer
8 1 (4.17%) Senior Software Developer
Libraries, Frameworks & Software Standards
1 17 (70.83%) Pthreads
2 2 (8.33%) Smart Contracts
2 2 (8.33%) STL
3 1 (4.17%) Boost C++ Libraries
3 1 (4.17%) REST
3 1 (4.17%) RESTful
Miscellaneous
1 16 (66.67%) Bitcoin
2 5 (20.83%) Virtual Team
3 2 (8.33%) Hedge funds
3 2 (8.33%) Management Information System
3 2 (8.33%) Public Cloud
Operating Systems
1 21 (87.50%) Linux
2 17 (70.83%) Windows
3 4 (16.67%) Unix
Processes & Methodologies
1 17 (70.83%) Multithreaded Programming
1 17 (70.83%) Multithreading
2 16 (66.67%) Cryptocurrency
3 15 (62.50%) Cryptography
3 15 (62.50%) Functional Testing
3 15 (62.50%) Performance Testing
3 15 (62.50%) Test Automation
4 6 (25.00%) Open Source
5 2 (8.33%) Agile Software Development
5 2 (8.33%) Configuration Management
5 2 (8.33%) Continuous Delivery
5 2 (8.33%) Continuous Improvement
5 2 (8.33%) Continuous Integration
5 2 (8.33%) Data Security
5 2 (8.33%) DevOps
5 2 (8.33%) E-Commerce
5 2 (8.33%) Mentoring
5 2 (8.33%) Scrum
5 2 (8.33%) Software Engineering
6 1 (4.17%) Market Making
Programming Languages
1 21 (87.50%) Python
2 19 (79.17%) Java
3 18 (75.00%) C++
4 9 (37.50%) C
5 2 (8.33%) Go
5 2 (8.33%) Shell Script
5 2 (8.33%) SQL
6 1 (4.17%) Scala
System Software
1 2 (8.33%) Docker
Systems Management
1 4 (16.67%) Kubernetes
2 3 (12.50%) Ansible
3 2 (8.33%) Grafana
3 2 (8.33%) Puppet
Vendors
1 2 (8.33%) PagerDuty
2 1 (4.17%) Oracle