The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for GCC skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited GCC over the 3 months to 29 March 2017 with a comparison to the same period in the previous 2 years.

GNU Compiler Collection (GCC)
England / London
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 579 649 650
Rank change year-on-year +70 +1  
Permanent jobs citing GCC 9 5 12
As % of all permanent IT jobs advertised in London 0.027% 0.012% 0.028%
As % of the Development Applications category 0.13% 0.062% 0.17%
Number of salaries quoted 4 3 12
Median salary £80,000 £90,000 £85,000
Median salary % change year-on-year -11.11% +5.88%  
UK excluding London median salary £50,000 £42,500 £50,000
% change year-on-year +17.64% -15.00%  

GCC is in the development application skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for development application skills.

Development Application Skills
London
Permanent job vacancies with a requirement for development application skills 6701 8056 6863
As % of all permanent IT job vacancies advertised in London 19.82% 19.00% 16.11%
Number of salaries quoted 5660 6991 5691
Median salary £59,000 £55,000 £53,000
Median salary % change year-on-year +7.27% +3.77%  
90% offered a salary of more than £40,000 £40,000 £38,800
10% offered a salary of more than £77,500 £70,000 £77,500
UK excluding London median salary £42,500 £42,500 £41,500
% change year-on-year - +2.40%  

GCC
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing GCC as a proportion of all permanent or contract IT jobs with a match in the Development Applications category.

Job vacancy trend for GCC in London

GCC
Salary Trend in London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing GCC in London.

Salary trend for GCC in London

GCC
Salary Histogram in London

The salary distribution of IT jobs citing GCC in London over the 3 months to 29 March 2017.

Salary histogram for GCC in London

GCC
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing GCC within the London region over the 3 months to 29 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London +45 1 £72,500 -14.70%
Mayfair -1 1 £90,000 -5.26%
GCC
England

For the 6 months to 29 March 2017, IT jobs citing GCC also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the London region with a requirement for GCC.

1 12 (100.00%) Linux
2 5 (41.67%) C
2 5 (41.67%) C++
2 5 (41.67%) Windows
2 5 (41.67%) Agile Software Development
2 5 (41.67%) Software Engineering
2 5 (41.67%) Degree
2 5 (41.67%) RESTful
2 5 (41.67%) Amazon AWS
2 5 (41.67%) Open Source
2 5 (41.67%) MongoDB
2 5 (41.67%) High Availability
2 5 (41.67%) Neo4j
2 5 (41.67%) Kafka
2 5 (41.67%) Go
2 5 (41.67%) Ansible
2 5 (41.67%) Docker
2 5 (41.67%) Ceph
2 5 (41.67%) iptables
2 5 (41.67%) Kubernetes
2 5 (41.67%) Terraform
2 5 (41.67%) Grafana
2 5 (41.67%) etcd
2 5 (41.67%) Traefik
3 4 (33.33%) Algorithms
3 4 (33.33%) Low Latency
3 4 (33.33%) Multithreading
3 4 (33.33%) Computer Science
3 4 (33.33%) Finance
4 3 (25.00%) Unix

GCC
Co-occurring IT Skills in 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:

Application Platforms
1 5 (41.67%) Traefik
Cloud Services
1 5 (41.67%) Amazon AWS
Communications & Networking
1 2 (16.67%) SSH
1 2 (16.67%) TCP/IP
2 1 (8.33%) Multicast
Database & Business Intelligence
1 5 (41.67%) MongoDB
1 5 (41.67%) Neo4j
2 2 (16.67%) SQLite
Development Applications
1 2 (16.67%) GDB
1 2 (16.67%) Subversion
General
1 4 (33.33%) Finance
2 2 (16.67%) Back Office
Job Titles
1 4 (33.33%) Developer
1 4 (33.33%) Senior Developer
1 4 (33.33%) Site Engineer
2 3 (25.00%) Linux Developer
3 2 (16.67%) C++ Developer
3 2 (16.67%) DevOps Engineer
3 2 (16.67%) DevOps Systems Engineer
3 2 (16.67%) Infrastructure Engineer
3 2 (16.67%) Senior C++ Developer
3 2 (16.67%) Systems Engineer
4 1 (8.33%) Analyst
4 1 (8.33%) Analyst Programmer
4 1 (8.33%) C++ Analyst Programmer
4 1 (8.33%) C++ Programmer
4 1 (8.33%) Programmer
4 1 (8.33%) Senior Systems Developer
Libraries, Frameworks & Software Standards
1 5 (41.67%) Kafka
1 5 (41.67%) RESTful
2 3 (25.00%) Middleware
3 2 (16.67%) CGI
4 1 (8.33%) Boost C++ Libraries
4 1 (8.33%) FIX Protocol
4 1 (8.33%) POSIX
4 1 (8.33%) STL
4 1 (8.33%) Ultra Messaging
Miscellaneous
1 4 (33.33%) Algorithms
1 4 (33.33%) Computer Science
2 3 (25.00%) Derivative
2 3 (25.00%) Foreign Exchange (FX)
3 1 (8.33%) Data Structures
3 1 (8.33%) Equities
3 1 (8.33%) Fixed Income
Operating Systems
1 12 (100.00%) Linux
2 5 (41.67%) Windows
3 3 (25.00%) Unix
4 2 (16.67%) Debian
5 1 (8.33%) Red Hat Enterprise Linux
Processes & Methodologies
1 5 (41.67%) Agile Software Development
1 5 (41.67%) High Availability
1 5 (41.67%) Open Source
1 5 (41.67%) Software Engineering
2 4 (33.33%) Low Latency
2 4 (33.33%) Multithreading
3 3 (25.00%) DevOps
3 3 (25.00%) Multithreaded Programming
4 1 (8.33%) Algorithmic Trading
4 1 (8.33%) High-Frequency Trading
4 1 (8.33%) Mathematics
4 1 (8.33%) OO
4 1 (8.33%) OOD
4 1 (8.33%) Pattern Recognition
4 1 (8.33%) Quantitative Trading
Programming Languages
1 5 (41.67%) C
1 5 (41.67%) C++
1 5 (41.67%) Go
2 3 (25.00%) Assembly Language
2 3 (25.00%) Perl
3 2 (16.67%) Shell Script
4 1 (8.33%) Python
Qualifications
1 5 (41.67%) Degree
System Software
1 5 (41.67%) Ceph
1 5 (41.67%) Docker
1 5 (41.67%) etcd
1 5 (41.67%) iptables
2 2 (16.67%) NFS
Systems Management
1 5 (41.67%) Ansible
1 5 (41.67%) Grafana
1 5 (41.67%) Kubernetes
1 5 (41.67%) Terraform
Vendors
1 1 (8.33%) Perforce
1 1 (8.33%) Red Hat
1 1 (8.33%) Solace