Period
to 16 May 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 16 May 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
16 May 2021
Same period 2020 Same period 2019
Rank 134 115 201
Rank change year-on-year -19 +86 -5
Contract jobs citing C 19 40 40
As % of all contract jobs advertised in the City of London 0.69% 1.20% 0.62%
As % of the Programming Languages category 1.45% 2.49% 1.23%
Number of daily rates quoted 17 23 27
10th Percentile £338 £383 £240
25th Percentile £385 £419 £400
Median daily rate (50th Percentile) £525 £500 £500
Median % change year-on-year +5.00% - -
75th Percentile £700 £575 £594
90th Percentile £845 £616 £690
Central London median daily rate £525 £500 £500
% change year-on-year +5.00% - -4.76%
Number of hourly rates quoted 1 0 1
Median hourly rate £14.00 - £11.00
Central London median hourly rate £14.00 - £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 1,307 1,608 3,263
As % of all contract IT jobs advertised in the City of London 47.37% 48.36% 50.46%
Number of daily rates quoted 983 1,273 2,652
10th Percentile £364 £377 £405
25th Percentile £461 £435 £463
Median daily rate (50th Percentile) £550 £525 £525
Median % change year-on-year +4.76% - -
75th Percentile £638 £619 £613
90th Percentile £719 £688 £675
Central London median daily rate £550 £525 £525
% change year-on-year +4.76% - +2.44%
Number of hourly rates quoted 4 14 19
10th Percentile £16.32 £23.80 £16.61
25th Percentile £19.79 £25.06 "
Median hourly rate £25.48 £43.00 £21.00
Median % change year-on-year -40.76% +104.76% -2.33%
75th Percentile £30.88 £52.81 £37.50
90th Percentile £34.70 £57.20 £50.60
Central London median hourly rate £23.45 £38.50 £21.75
% change year-on-year -39.09% +77.01% +1.16%

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 16 May 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 16 May 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 16 May 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 8 (42.11%) Python
2 7 (36.84%) C++
3 6 (31.58%) Java
4 5 (26.32%) Software Engineering
5 4 (21.05%) Degree
5 4 (21.05%) Linux
5 4 (21.05%) OO
5 4 (21.05%) NFS
5 4 (21.05%) DevOps
6 3 (15.79%) Ceph
6 3 (15.79%) Mesos
6 3 (15.79%) Kubernetes
6 3 (15.79%) Test Strategy
6 3 (15.79%) Performance Tuning
6 3 (15.79%) Hadoop YARN
6 3 (15.79%) Problem-Solving
6 3 (15.79%) Site Reliability Engineering
6 3 (15.79%) Infrastructure Engineering
6 3 (15.79%) Service-Level Objective
6 3 (15.79%) Social Skills
6 3 (15.79%) Data Modelling
6 3 (15.79%) JavaScript
6 3 (15.79%) Windows
6 3 (15.79%) Wi-Fi
6 3 (15.79%) Resource Management
6 3 (15.79%) Mathematics
6 3 (15.79%) TDD
6 3 (15.79%) Ruby
6 3 (15.79%) Continuous Integration
6 3 (15.79%) Test Automation

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 1 (5.26%) Apache Spark
1 1 (5.26%) Exchange Server 2007
1 1 (5.26%) Exchange Server 2013
1 1 (5.26%) MS Exchange
Applications
1 1 (5.26%) Simulink
Business Applications
1 1 (5.26%) Oracle Applications
Cloud Services
1 2 (10.53%) AWS
1 2 (10.53%) AWS Lambda
1 2 (10.53%) Azure
1 2 (10.53%) Microsoft 365
1 2 (10.53%) Serverless
2 1 (5.26%) Amazon ECS
2 1 (5.26%) Azure Active Directory
2 1 (5.26%) Mimecast
2 1 (5.26%) OneDrive
Communications & Networking
1 3 (15.79%) Wi-Fi
2 2 (10.53%) DECT
2 2 (10.53%) IPv4
2 2 (10.53%) IPv6
2 2 (10.53%) Multicast
2 2 (10.53%) PPP
2 2 (10.53%) UPnP
3 1 (5.26%) 3GPP
3 1 (5.26%) 4G
3 1 (5.26%) 5G
3 1 (5.26%) Broadband
3 1 (5.26%) DHCP
3 1 (5.26%) DNS
3 1 (5.26%) FTP
3 1 (5.26%) iSCSI
3 1 (5.26%) LTE
3 1 (5.26%) MIMO
3 1 (5.26%) Radio Access Network
3 1 (5.26%) SAN
3 1 (5.26%) Wireless
Database & Business Intelligence
1 1 (5.26%) Apache Cassandra
1 1 (5.26%) Big Data
1 1 (5.26%) Hadoop
1 1 (5.26%) PostgreSQL
1 1 (5.26%) Tableau
Development Applications
1 2 (10.53%) GDB
1 2 (10.53%) Git (software)
1 2 (10.53%) GitLab
1 2 (10.53%) JIRA
General
1 3 (15.79%) Social Skills
2 2 (10.53%) Analytical Skills
2 2 (10.53%) Front Office
2 2 (10.53%) Telecoms
3 1 (5.26%) Automotive
3 1 (5.26%) Legal
3 1 (5.26%) Multimedia
3 1 (5.26%) Organisational Skills
Job Titles
1 5 (26.32%) Developer
2 3 (15.79%) DevOps Engineer
3 2 (10.53%) Architect
3 2 (10.53%) Consultant
3 2 (10.53%) DevOps Consultant
3 2 (10.53%) Senior Consultant
3 2 (10.53%) Senior DevOps
3 2 (10.53%) Senior DevOps Consultant
3 2 (10.53%) Senior DevOps Engineer
3 2 (10.53%) Senior Technical Consultant
3 2 (10.53%) Senior Technical Engineer
3 2 (10.53%) Software Engineer
3 2 (10.53%) Solutions Architect
3 2 (10.53%) Technical Consultant
3 2 (10.53%) Technical Engineer
4 1 (5.26%) Applications Engineer
4 1 (5.26%) C Developer
4 1 (5.26%) C Software Engineer
4 1 (5.26%) Designer
4 1 (5.26%) Windows Engineer
Libraries, Frameworks & Software Standards
1 1 (5.26%) Core Data
1 1 (5.26%) Express
1 1 (5.26%) GraphQL
1 1 (5.26%) JSON
1 1 (5.26%) Node.js
1 1 (5.26%) Reactive Extensions
1 1 (5.26%) REST
1 1 (5.26%) RxCocoa
1 1 (5.26%) RxSwift
1 1 (5.26%) Spring
1 1 (5.26%) Swagger
1 1 (5.26%) UIKit
Miscellaneous
1 3 (15.79%) Embedded Systems
2 2 (10.53%) Algorithms
2 2 (10.53%) Fixed Income
2 2 (10.53%) Foreign Exchange (FX)
3 1 (5.26%) Clustering
3 1 (5.26%) Enterprise Software
3 1 (5.26%) Field-Programmable Gate Array
3 1 (5.26%) Mobile App
3 1 (5.26%) Replication
3 1 (5.26%) Verilog
3 1 (5.26%) VHDL
3 1 (5.26%) Video Conferencing
3 1 (5.26%) Virtual Team
Operating Systems
1 4 (21.05%) Linux
2 3 (15.79%) Windows
3 2 (10.53%) Android
3 2 (10.53%) Apple iOS
3 2 (10.53%) Mac OS
3 2 (10.53%) OpenWrt
4 1 (5.26%) Red Hat Enterprise Linux
4 1 (5.26%) Windows 10
4 1 (5.26%) Windows Server 2008
4 1 (5.26%) Windows Server 2012
4 1 (5.26%) Windows Server 2016
Processes & Methodologies
1 5 (26.32%) Software Engineering
2 4 (21.05%) DevOps
2 4 (21.05%) OO
3 3 (15.79%) Capacity Planning
3 3 (15.79%) Continuous Integration
3 3 (15.79%) Data Modelling
3 3 (15.79%) Infrastructure Engineering
3 3 (15.79%) Mathematics
3 3 (15.79%) Performance Tuning
3 3 (15.79%) Problem-Solving
3 3 (15.79%) Resource Management
3 3 (15.79%) Service-Level Objective
3 3 (15.79%) Site Reliability Engineering
3 3 (15.79%) TDD
3 3 (15.79%) Test Automation
3 3 (15.79%) Test Strategy
4 2 (10.53%) Kanban
4 2 (10.53%) Open Source
4 2 (10.53%) Performance Optimisation
4 2 (10.53%) Scrum
Programming Languages
1 8 (42.11%) Python
2 7 (36.84%) C++
3 6 (31.58%) Java
4 3 (15.79%) JavaScript
4 3 (15.79%) Ruby
5 2 (10.53%) Bash Shell
5 2 (10.53%) Shell Script
5 2 (10.53%) SQL
6 1 (5.26%) Apple Swift
6 1 (5.26%) Kotlin
6 1 (5.26%) MATLAB
6 1 (5.26%) PL/SQL
6 1 (5.26%) PowerShell
6 1 (5.26%) TypeScript
Qualifications
1 4 (21.05%) Degree
2 1 (5.26%) Master's Degree
2 1 (5.26%) PhD
Quality Assurance & Compliance
1 2 (10.53%) JTAG
1 2 (10.53%) SLA
2 1 (5.26%) QA
System Software
1 4 (21.05%) NFS
2 3 (15.79%) Ceph
3 1 (5.26%) Active Directory
3 1 (5.26%) Docker
3 1 (5.26%) VMware Infrastructure
3 1 (5.26%) XenApp
Systems Management
1 3 (15.79%) Hadoop YARN
1 3 (15.79%) Kubernetes
1 3 (15.79%) Mesos
2 1 (5.26%) AirWatch
2 1 (5.26%) Ansible
2 1 (5.26%) Microsoft Clustering
Vendors
1 2 (10.53%) Citrix
1 2 (10.53%) HP
2 1 (5.26%) Apple
2 1 (5.26%) Cisco
2 1 (5.26%) F5
2 1 (5.26%) Green Hills
2 1 (5.26%) Intel
2 1 (5.26%) Microsoft
2 1 (5.26%) NetApp
2 1 (5.26%) Oracle
2 1 (5.26%) Planview
2 1 (5.26%) QNX
2 1 (5.26%) Remedy
2 1 (5.26%) ServiceNow
2 1 (5.26%) Siebel
2 1 (5.26%) SolarWinds
2 1 (5.26%) Sun
2 1 (5.26%) Symantec
2 1 (5.26%) VMware
2 1 (5.26%) Xilinx