Portable Operating System Interface (POSIX) England> London
The table below provides summary statistics for contract job vacancies advertised in London requiring POSIX skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited POSIX over the 6 months leading up to 1 May 2025, comparing them to the same period in the previous two years.
POSIX falls under the Software Libraries and Frameworks category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring technical specification, industry standards, software libraries and framework skills in London.
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills
3,271
4,464
7,402
As % of all contract IT jobs advertised in London
26.07%
25.04%
27.38%
Number of daily rates quoted
2,298
3,349
5,511
10th Percentile
£385
£375
£413
25th Percentile
£450
£459
£500
Median daily rate (50th Percentile)
£575
£575
£600
Median % change year-on-year
-
-4.17%
-
75th Percentile
£725
£700
£730
90th Percentile
£838
£825
£813
England median daily rate
£530
£550
£563
% change year-on-year
-3.64%
-2.22%
-
Number of hourly rates quoted
18
26
40
10th Percentile
£33.25
£16.25
£30.68
25th Percentile
£36.06
£23.90
£37.84
Median hourly rate
£52.50
£37.17
£66.00
Median % change year-on-year
+41.24%
-43.68%
+35.86%
75th Percentile
£65.00
£61.25
£75.00
90th Percentile
£76.25
£68.50
£76.63
England median hourly rate
£65.00
£46.18
£65.00
% change year-on-year
+40.75%
-28.95%
+32.65%
POSIX Job Vacancy Trend in London
Job postings citing POSIX as a proportion of all IT jobs advertised in London.
POSIX Contractor Daily Rate Trend in London
3-month moving average daily rate quoted in jobs citing POSIX in London.
POSIX Contractor Hourly Rate Trend in London
3-month moving average hourly rates quoted in jobs citing POSIX in London.
POSIX Top 30 Co-occurring Skills and Capabilities in London
For the 6 months to 1 May 2025, contractor job vacancies citing POSIX also mentioned the following skills and capabilities in order of popularity.
The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the London region with a requirement for POSIX.
POSIX Co-occurring Skills and Capabilities in London by Category
The follow tables expand on the table above by listing co-occurrences grouped by category.
The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:
