The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for OpenGL skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited OpenGL over the 3 months to 27 March 2017 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.

OpenGL
London / City of London
3 months to
27 Mar 2017
Same period 2016 Same period 2015
Rank 154 152 190
Rank change year-on-year -2 +38  
Contract jobs citing OpenGL 1 6 4
As % of all contract IT jobs advertised in the City of London 0.033% 0.18% 0.077%
As % of the Libraries, Frameworks & Software Standards category 0.095% 0.55% 0.26%
Number of daily rates quoted 1 6 2
Median daily rate £475 £500 £425
Median daily rate % change year-on-year -5.00% +17.64%  
UK excluding London median daily rate £358 £325 £310
% change year-on-year +10.00% +4.83%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £45.00 £40.00 £37.62
% change year-on-year +12.50% +6.32%  

OpenGL 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 contract job vacancies advertised in the City of London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
City of London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 1057 1091 1552
As % of all contract IT job vacancies advertised in the City of London 35.06% 32.80% 30.01%
Number of daily rates quoted 876 918 1243
Median daily rate £475 £463 £425
Median daily rate % change year-on-year +2.70% +8.82%  
90% offered a daily rate of more than £338 £325 £315
10% offered a daily rate of more than £625 £600 £580
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 2 5 7
Median hourly rate £35.00 £55.00 £27.37
Median hourly rate % change year-on-year -36.36% +100.94%  
UK excluding London median hourly rate £40.50 £38.00 £36.00
% change year-on-year +6.57% +5.55%  

OpenGL
Job Vacancy Trend in the City of London

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

Job vacancy trend for OpenGL in the City of London

OpenGL
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing OpenGL in the City of London.

Contractor daily rate trend for OpenGL in the City of London

OpenGL
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing OpenGL in the City of London.

Contractor hourly rate trend for OpenGL in the City of London

OpenGL
Top 30 Co-occurring IT Skills in the City of London

For the 6 months to 27 March 2017, IT contractor jobs citing OpenGL also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for OpenGL.

1 6 (100.00%) C++
2 4 (66.67%) Android
2 4 (66.67%) Android Development
3 2 (33.33%) Apple iOS
3 2 (33.33%) Game Development
3 2 (33.33%) Qt
3 2 (33.33%) Augmented Reality
3 2 (33.33%) Parallel Computing
3 2 (33.33%) Open Source
3 2 (33.33%) iOS Development
3 2 (33.33%) Android NDK
3 2 (33.33%) QA
3 2 (33.33%) Games
3 2 (33.33%) Google
3 2 (33.33%) Agile Software Development
3 2 (33.33%) TDD
3 2 (33.33%) Pair Programming
3 2 (33.33%) Visual Studio
3 2 (33.33%) Linux
3 2 (33.33%) Python
3 2 (33.33%) Continuous Improvement
3 2 (33.33%) OpenCV
3 2 (33.33%) OpenCL
3 2 (33.33%) Renderscript
3 2 (33.33%) Computer Vision
4 1 (16.67%) Internet
4 1 (16.67%) Software Engineering
4 1 (16.67%) Degree
4 1 (16.67%) Git (software)
4 1 (16.67%) Mobile Development

OpenGL
Co-occurring IT Skills in the City of London 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%) Internet
Development Applications
1 2 (33.33%) Visual Studio
2 1 (16.67%) Git (software)
General
1 2 (33.33%) Games
Job Titles
1 6 (100.00%) Developer
2 5 (83.33%) C++ Developer
3 3 (50.00%) Android Developer
4 2 (33.33%) Qt Developer
5 1 (16.67%) Agile Developer
5 1 (16.67%) C++ GUI Developer
5 1 (16.67%) GUI Developer
5 1 (16.67%) iOS Android Developer
5 1 (16.67%) iOS Developer
5 1 (16.67%) Mobile Developer
Libraries, Frameworks & Software Standards
1 2 (33.33%) Android NDK
1 2 (33.33%) OpenCL
1 2 (33.33%) OpenCV
1 2 (33.33%) Qt
1 2 (33.33%) Renderscript
Miscellaneous
1 2 (33.33%) Augmented Reality
Operating Systems
1 4 (66.67%) Android
2 2 (33.33%) Apple iOS
2 2 (33.33%) Linux
Processes & Methodologies
1 4 (66.67%) Android Development
2 2 (33.33%) Agile Software Development
2 2 (33.33%) Computer Vision
2 2 (33.33%) Continuous Improvement
2 2 (33.33%) Game Development
2 2 (33.33%) iOS Development
2 2 (33.33%) Open Source
2 2 (33.33%) Pair Programming
2 2 (33.33%) Parallel Computing
2 2 (33.33%) TDD
3 1 (16.67%) Mobile Development
3 1 (16.67%) Software Engineering
Programming Languages
1 6 (100.00%) C++
2 2 (33.33%) Python
Qualifications
1 1 (16.67%) Degree
Quality Assurance & Compliance
1 2 (33.33%) QA
Vendors
1 2 (33.33%) Google