Period
to 24 July 2021

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for C skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited C over the 6 months to 24 July 2021 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.

C
Central London > City of London
6 months to
24 Jul 2021
Same period 2020 Same period 2019
Rank 145 101 186
Rank change year-on-year -44 +85 -15
Contract jobs citing C 22 36 49
As % of all contract jobs advertised in the City of London 0.65% 1.49% 0.74%
As % of the Programming Languages category 1.39% 2.98% 1.49%
Number of daily rates quoted 20 20 34
10th Percentile £347 £413 £386
25th Percentile £415 £472 £463
Median daily rate (50th Percentile) £700 £538 £550
Median % change year-on-year +30.23% -2.27% +7.32%
75th Percentile £886 £625 £638
90th Percentile £904 £692 £746
Central London median daily rate £656 £550 £550
% change year-on-year +19.32% - +4.76%
Number of hourly rates quoted 0 0 1
Median hourly rate - - £11.00
Central London median hourly rate £19.50 - £11.00

C is in the Programming Languages category. The following 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 coding skills.

All Programming Languages
City of London
Contract vacancies with a requirement for coding skills 1,582 1,208 3,291
As % of all contract IT jobs advertised in the City of London 46.57% 49.88% 49.90%
Number of daily rates quoted 1,218 940 2,690
10th Percentile £406 £367 £406
25th Percentile £470 £438 £463
Median daily rate (50th Percentile) £585 £525 £525
Median % change year-on-year +11.38% - -
75th Percentile £675 £625 £613
90th Percentile £750 £688 £675
Central London median daily rate £575 £525 £525
% change year-on-year +9.52% - -
Number of hourly rates quoted 8 10 22
10th Percentile £24.19 £26.43 "
25th Percentile £26.00 £33.31 £21.00
Median hourly rate £33.50 £38.50 £22.00
Median % change year-on-year -12.99% +75.00% +2.33%
75th Percentile £37.75 £52.38 £37.50
90th Percentile £47.43 £57.88 £51.04
Central London median hourly rate £27.50 £38.50 £22.50
% change year-on-year -28.57% +71.11% +4.65%

C
Job Vacancy Trend in the City of London

Job postings citing C as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for C in the City of London

C
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing C in the City of London.

Daily rate trend for C in the City of London

C
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing C in the City of London over the 6 months to 24 July 2021.

Daily rate histogram for C in the City of London

C
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing C in the City of London.

Hourly rate trend for C in the City of London

C
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing C within the City of London region over the 6 months to 24 July 2021. 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge - 1 £385 -
C
Central London

For the 6 months to 24 July 2021, IT contractor jobs citing C also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the City of London region with a requirement for C.

1 10 (45.45%) Python
2 9 (40.91%) C++
3 6 (27.27%) SQL
3 6 (27.27%) Degree
3 6 (27.27%) Mathematics
4 5 (22.73%) Linux
4 5 (22.73%) Java
5 4 (18.18%) C#
5 4 (18.18%) Data Modelling
5 4 (18.18%) Test Automation
5 4 (18.18%) Agile Software Development
5 4 (18.18%) Banking
5 4 (18.18%) Test Strategy
5 4 (18.18%) Big Data
6 3 (13.64%) DevOps
6 3 (13.64%) Analytical Skills
6 3 (13.64%) Algorithms
6 3 (13.64%) Machine Learning
6 3 (13.64%) Git (software)
6 3 (13.64%) Embedded Systems
6 3 (13.64%) Azure
6 3 (13.64%) Problem-Solving
6 3 (13.64%) Investment Banking
6 3 (13.64%) Fixed Income
6 3 (13.64%) JIRA
6 3 (13.64%) Derivative
6 3 (13.64%) Continuous Integration
6 3 (13.64%) PowerShell
6 3 (13.64%) Oracle
6 3 (13.64%) SQL Server

C
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:

Application Platforms
1 2 (9.09%) Apache Spark
2 1 (4.55%) Apache Solr
2 1 (4.55%) Oracle Coherence
2 1 (4.55%) SharePoint
Applications
1 1 (4.55%) Microsoft Excel
1 1 (4.55%) Simulink
1 1 (4.55%) Spreadsheet
Business Applications
1 1 (4.55%) Oracle Applications
Cloud Services
1 3 (13.64%) Azure
2 2 (9.09%) Microsoft 365
3 1 (4.55%) Azure Active Directory
3 1 (4.55%) Azure Logic Apps
3 1 (4.55%) Mimecast
3 1 (4.55%) OneDrive
3 1 (4.55%) PaaS
3 1 (4.55%) Power Automate
3 1 (4.55%) Power Platform
3 1 (4.55%) PowerApps
3 1 (4.55%) SaaS
Communications & Networking
1 2 (9.09%) DECT
1 2 (9.09%) IPv4
1 2 (9.09%) IPv6
1 2 (9.09%) Multicast
1 2 (9.09%) PPP
1 2 (9.09%) UPnP
1 2 (9.09%) Wi-Fi
2 1 (4.55%) 3GPP
2 1 (4.55%) 4G
2 1 (4.55%) 5G
2 1 (4.55%) Broadband
2 1 (4.55%) DHCP
2 1 (4.55%) DNS
2 1 (4.55%) FTP
2 1 (4.55%) iSCSI
2 1 (4.55%) LTE
2 1 (4.55%) MIMO
2 1 (4.55%) Radio Access Network
2 1 (4.55%) SAN
2 1 (4.55%) Wireless
Database & Business Intelligence
1 4 (18.18%) Big Data
2 3 (13.64%) SQL Server
3 2 (9.09%) Apache Cassandra
3 2 (9.09%) Hadoop
3 2 (9.09%) Tableau
4 1 (4.55%) DB2
4 1 (4.55%) DB2 UDB
4 1 (4.55%) MySQL
4 1 (4.55%) Oracle Database
4 1 (4.55%) Oracle Database 11g
4 1 (4.55%) Oracle Database 12c
4 1 (4.55%) PostgreSQL
4 1 (4.55%) Power BI
Development Applications
1 3 (13.64%) Git (software)
1 3 (13.64%) JIRA
2 2 (9.09%) GDB
2 2 (9.09%) GitLab
3 1 (4.55%) Ant
3 1 (4.55%) Eclipse
3 1 (4.55%) IntelliJ
3 1 (4.55%) Jenkins
3 1 (4.55%) Selenium
3 1 (4.55%) SonarQube
3 1 (4.55%) TeamCity
3 1 (4.55%) Visual Studio
General
1 4 (18.18%) Banking
2 3 (13.64%) Analytical Skills
2 3 (13.64%) Investment Banking
3 2 (9.09%) Finance
3 2 (9.09%) Front Office
3 2 (9.09%) Social Skills
3 2 (9.09%) Telecoms
4 1 (4.55%) Automotive
4 1 (4.55%) Legal
4 1 (4.55%) Marketing
4 1 (4.55%) Multimedia
Job Titles
1 7 (31.82%) Developer
2 4 (18.18%) C Developer
2 4 (18.18%) Python Developer
2 4 (18.18%) Quantitative Developer
3 3 (13.64%) C# Developer
3 3 (13.64%) C# Quant Developer
4 2 (9.09%) Applications Developer
4 2 (9.09%) Architect
4 2 (9.09%) Data Scientist
4 2 (9.09%) Senior Data Scientist
4 2 (9.09%) Software Engineer
4 2 (9.09%) Solutions Architect
5 1 (4.55%) Analyst
5 1 (4.55%) C Software Engineer
5 1 (4.55%) Consultant
5 1 (4.55%) Embedded Software Engineer
5 1 (4.55%) Infrastructure Analyst
5 1 (4.55%) Microsoft Developer
5 1 (4.55%) Software Developer
5 1 (4.55%) Test Manager
Libraries, Frameworks & Software Standards
1 2 (9.09%) .NET
1 2 (9.09%) CSS
1 2 (9.09%) HTML
1 2 (9.09%) Spring
2 1 (4.55%) .NET Framework
2 1 (4.55%) CSS3
2 1 (4.55%) HTML5
2 1 (4.55%) HTML5 Canvas
2 1 (4.55%) JSP
2 1 (4.55%) LDAP
2 1 (4.55%) Middleware
2 1 (4.55%) REST
2 1 (4.55%) SailPoint
2 1 (4.55%) Servlets
2 1 (4.55%) SOAP
2 1 (4.55%) Web Services
2 1 (4.55%) XML
Miscellaneous
1 3 (13.64%) Algorithms
1 3 (13.64%) Derivative
1 3 (13.64%) Embedded Systems
1 3 (13.64%) Fixed Income
2 2 (9.09%) Foreign Exchange (FX)
2 2 (9.09%) Virtual Team
3 1 (4.55%) Clustering
3 1 (4.55%) Enterprise Software
3 1 (4.55%) Field-Programmable Gate Array
3 1 (4.55%) Linux Command Line
3 1 (4.55%) Mainframe
3 1 (4.55%) Reference Data
3 1 (4.55%) Replication
3 1 (4.55%) User Experience
3 1 (4.55%) Verilog
3 1 (4.55%) VHDL
Operating Systems
1 5 (22.73%) Linux
2 2 (9.09%) OpenWrt
2 2 (9.09%) Red Hat Enterprise Linux
2 2 (9.09%) Windows
3 1 (4.55%) Android
3 1 (4.55%) Unix
3 1 (4.55%) Windows Server 2008
3 1 (4.55%) Windows Server 2012
3 1 (4.55%) Windows Server 2016
Processes & Methodologies
1 6 (27.27%) Mathematics
2 4 (18.18%) Agile Software Development
2 4 (18.18%) Data Modelling
2 4 (18.18%) Test Automation
2 4 (18.18%) Test Strategy
3 3 (13.64%) Continuous Integration
3 3 (13.64%) DevOps
3 3 (13.64%) Machine Learning
3 3 (13.64%) Problem-Solving
4 2 (9.09%) Artificial Intelligence
4 2 (9.09%) Computer Science
4 2 (9.09%) Data Cleansing
4 2 (9.09%) Data Science
4 2 (9.09%) Kanban
4 2 (9.09%) Prototyping
4 2 (9.09%) Scrum
4 2 (9.09%) Software Engineering
4 2 (9.09%) Statistics
4 2 (9.09%) TDD
4 2 (9.09%) Validation
Programming Languages
1 10 (45.45%) Python
2 9 (40.91%) C++
3 6 (27.27%) SQL
4 5 (22.73%) Java
5 4 (18.18%) C#
6 3 (13.64%) PowerShell
7 2 (9.09%) Bash Shell
7 2 (9.09%) JavaScript
7 2 (9.09%) Shell Script
8 1 (4.55%) BeanShell
8 1 (4.55%) Bourne shell
8 1 (4.55%) Korn
8 1 (4.55%) MATLAB
8 1 (4.55%) Perl
8 1 (4.55%) PL/SQL
8 1 (4.55%) VB.NET
Qualifications
1 6 (27.27%) Degree
2 1 (4.55%) Master's Degree
2 1 (4.55%) Microsoft Certification
2 1 (4.55%) PhD
Quality Assurance & Compliance
1 2 (9.09%) JTAG
1 2 (9.09%) QA
System Software
1 2 (9.09%) Active Directory
2 1 (4.55%) NFS
2 1 (4.55%) RACF
2 1 (4.55%) VMware Infrastructure
2 1 (4.55%) XenApp
Systems Management
1 1 (4.55%) Ansible
1 1 (4.55%) ITRS Geneos
1 1 (4.55%) Microsoft Clustering
Vendors
1 3 (13.64%) Oracle
2 2 (9.09%) Microsoft
3 1 (4.55%) Citrix
3 1 (4.55%) Green Hills
3 1 (4.55%) HP
3 1 (4.55%) Intel
3 1 (4.55%) NetApp
3 1 (4.55%) QNX
3 1 (4.55%) Red Hat
3 1 (4.55%) Siebel
3 1 (4.55%) SolarWinds
3 1 (4.55%) Symantec
3 1 (4.55%) VMware
3 1 (4.55%) Xilinx