Period
to 16 October 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 October 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 Oct 2021
Same period 2020 Same period 2019
Rank 125 90 174
Rank change year-on-year -35 +84 +5
Contract jobs citing C 49 27 57
As % of all contract jobs advertised in the City of London 1.28% 1.52% 0.96%
As % of the Programming Languages category 2.68% 3.13% 1.92%
Number of daily rates quoted 45 16 43
10th Percentile £350 £220 £415
25th Percentile £425 £450 £456
Median daily rate (50th Percentile) £550 £525 £550
Median % change year-on-year +4.76% -4.55% +10.00%
75th Percentile £675 £640 £638
90th Percentile £860 £750 £792
Central London median daily rate £550 £525 £550
% change year-on-year +4.76% -4.55% +10.00%
Number of hourly rates quoted 0 0 1
Median hourly rate - - £63.33
Central London median hourly rate - - £63.33

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 1,830 864 2,963
As % of all contract IT jobs advertised in the City of London 47.84% 48.76% 49.70%
Number of daily rates quoted 1,448 661 2,433
10th Percentile £413 £363 £400
25th Percentile £500 £431 £463
Median daily rate (50th Percentile) £600 £525 £525
Median % change year-on-year +14.29% - -
75th Percentile £688 £625 £625
90th Percentile £775 £694 £688
Central London median daily rate £600 £525 £525
% change year-on-year +14.29% - -
Number of hourly rates quoted 10 8 13
10th Percentile £26.15 £12.75 "
25th Percentile £32.00 £19.69 £21.00
Median hourly rate £36.50 £28.75 £22.33
Median % change year-on-year +26.96% +28.75% +1.50%
75th Percentile £61.56 £37.56 £51.25
90th Percentile £67.98 £39.48 £54.85
Central London median hourly rate £36.50 £28.75 £22.42
% change year-on-year +26.96% +28.26% +1.89%

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 October 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

For the 6 months to 16 October 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 22 (44.90%) SQL
2 21 (42.86%) Python
3 17 (34.69%) Java
4 16 (32.65%) C++
5 14 (28.57%) Oracle
6 12 (24.49%) Finance
7 10 (20.41%) Banking
8 9 (18.37%) Agile Software Development
8 9 (18.37%) C#
8 9 (18.37%) Data Engineering
9 8 (16.33%) T-SQL
9 8 (16.33%) SQL Server
9 8 (16.33%) Windows
9 8 (16.33%) .NET
9 8 (16.33%) PostgreSQL
9 8 (16.33%) Degree
9 8 (16.33%) Mathematics
9 8 (16.33%) Analytics
10 7 (14.29%) Oracle Database
10 7 (14.29%) Analytical Skills
10 7 (14.29%) DevOps
10 7 (14.29%) AWS
10 7 (14.29%) TDD
10 7 (14.29%) Microsoft Excel
11 6 (12.24%) Actionable Insight
11 6 (12.24%) OO
11 6 (12.24%) VB.NET
11 6 (12.24%) Linux
11 6 (12.24%) Data Analysis
11 6 (12.24%) JIRA

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 4 (8.16%) Apache Spark
2 2 (4.08%) Confluence
2 2 (4.08%) OpenStack
2 2 (4.08%) SharePoint
3 1 (2.04%) Apache Solr
3 1 (2.04%) Oracle Coherence
Applications
1 7 (14.29%) Microsoft Excel
2 1 (2.04%) Microsoft Office
2 1 (2.04%) Spreadsheet
Cloud Services
1 7 (14.29%) AWS
2 5 (10.20%) Azure
3 3 (6.12%) GCP
4 2 (4.08%) AWS CloudFormation
4 2 (4.08%) Microsoft 365
4 2 (4.08%) Power Platform
4 2 (4.08%) Serverless
5 1 (2.04%) Azure Event Grid
5 1 (2.04%) Azure Logic Apps
5 1 (2.04%) GitHub
5 1 (2.04%) PaaS
5 1 (2.04%) Power Automate
5 1 (2.04%) PowerApps
5 1 (2.04%) SaaS
Communications & Networking
1 2 (4.08%) FCoE
1 2 (4.08%) Fibre Channel
1 2 (4.08%) iSCSI
2 1 (2.04%) Broadband
2 1 (2.04%) DECT
2 1 (2.04%) IPv4
2 1 (2.04%) IPv6
2 1 (2.04%) Multicast
2 1 (2.04%) PPP
2 1 (2.04%) Unified Communications
2 1 (2.04%) UPnP
2 1 (2.04%) Wi-Fi
Database & Business Intelligence
1 8 (16.33%) PostgreSQL
1 8 (16.33%) SQL Server
2 7 (14.29%) Oracle Database
3 6 (12.24%) Big Data
3 6 (12.24%) Relational Database
4 5 (10.20%) RDBMS
5 4 (8.16%) Apache Cassandra
5 4 (8.16%) Hadoop
5 4 (8.16%) Tableau
6 2 (4.08%) MySQL
6 2 (4.08%) NoSQL
6 2 (4.08%) Power BI
7 1 (2.04%) Data Mart
7 1 (2.04%) Data Warehouse
7 1 (2.04%) DB2
7 1 (2.04%) DB2 UDB
7 1 (2.04%) Oracle Database 11g
7 1 (2.04%) Oracle Database 12c
Development Applications
1 6 (12.24%) JIRA
2 5 (10.20%) Git (software)
3 4 (8.16%) Jenkins
4 2 (4.08%) GDB
4 2 (4.08%) GitLab
4 2 (4.08%) TeamCity
5 1 (2.04%) Ant
5 1 (2.04%) Atlassian Bamboo
5 1 (2.04%) Bitbucket
5 1 (2.04%) CMake
5 1 (2.04%) Cypress.io
5 1 (2.04%) Eclipse
5 1 (2.04%) IntelliJ
5 1 (2.04%) JMeter
5 1 (2.04%) Selenium
5 1 (2.04%) SonarQube
5 1 (2.04%) Storybook
5 1 (2.04%) Team Foundation Server
5 1 (2.04%) Visual Studio
5 1 (2.04%) webpack
General
1 12 (24.49%) Finance
2 10 (20.41%) Banking
3 7 (14.29%) Analytical Skills
4 5 (10.20%) Legal
5 4 (8.16%) Investment Banking
6 3 (6.12%) Social Skills
7 2 (4.08%) Financial Institution
8 1 (2.04%) Advertising
8 1 (2.04%) Automotive
8 1 (2.04%) Front Office
8 1 (2.04%) Law
8 1 (2.04%) Marketing
8 1 (2.04%) Multimedia
Job Titles
1 21 (42.86%) Developer
2 9 (18.37%) Python Developer
3 8 (16.33%) C# Developer
4 7 (14.29%) Python Engineer
5 5 (10.20%) Java Developer
5 5 (10.20%) Java Engineer
6 4 (8.16%) C Developer
6 4 (8.16%) Data Scientist
6 4 (8.16%) Quantitative Developer
6 4 (8.16%) Senior Data Scientist
7 3 (6.12%) Analyst
7 3 (6.12%) C# Quant Developer
7 3 (6.12%) Insurance Systems Analyst
7 3 (6.12%) Software Analyst
7 3 (6.12%) Systems Analyst
8 2 (4.08%) Agile Product Owner
8 2 (4.08%) Architect
8 2 (4.08%) Cloud Architect
8 2 (4.08%) Consultant
8 2 (4.08%) Product Owner
Libraries, Frameworks & Software Standards
1 8 (16.33%) .NET
2 6 (12.24%) .NET Framework
3 5 (10.20%) Kafka
3 5 (10.20%) WPF
4 4 (8.16%) Spring Boot
5 3 (6.12%) CSS
5 3 (6.12%) HTML
5 3 (6.12%) React
6 2 (4.08%) Spring
6 2 (4.08%) XML
7 1 (2.04%) AngularJS
7 1 (2.04%) ASP.NET
7 1 (2.04%) HTML5 Canvas
7 1 (2.04%) JSP
7 1 (2.04%) LDAP
7 1 (2.04%) Middleware
7 1 (2.04%) Servlets
7 1 (2.04%) SOAP
7 1 (2.04%) Web Services
7 1 (2.04%) XSLT
Miscellaneous
1 5 (10.20%) Legacy Systems
2 4 (8.16%) Algorithms
2 4 (8.16%) Reinsurance
3 3 (6.12%) Derivative
3 3 (6.12%) Embedded Systems
4 2 (4.08%) Data Centre
4 2 (4.08%) Enterprise Cloud
4 2 (4.08%) Hedge funds
4 2 (4.08%) User Experience
4 2 (4.08%) Virtual Team
5 1 (2.04%) Cloud Native
5 1 (2.04%) Enterprise Software
5 1 (2.04%) Fixed Income
5 1 (2.04%) Foreign Exchange (FX)
5 1 (2.04%) Linux Command Line
5 1 (2.04%) Mainframe
5 1 (2.04%) Reference Data
Operating Systems
1 8 (16.33%) Windows
2 6 (12.24%) Linux
3 2 (4.08%) OpenWrt
3 2 (4.08%) Unix
3 2 (4.08%) Windows Server
4 1 (2.04%) Android
4 1 (2.04%) Red Hat Enterprise Linux
Processes & Methodologies
1 9 (18.37%) Agile Software Development
1 9 (18.37%) Data Engineering
2 8 (16.33%) Analytics
2 8 (16.33%) Mathematics
3 7 (14.29%) DevOps
3 7 (14.29%) TDD
4 6 (12.24%) Actionable Insight
4 6 (12.24%) Data Analysis
4 6 (12.24%) Microservices
4 6 (12.24%) OO
5 5 (10.20%) Architectural Design
5 5 (10.20%) Artificial Intelligence
5 5 (10.20%) BDD
5 5 (10.20%) Business Intelligence
5 5 (10.20%) Data Modelling
5 5 (10.20%) Machine Learning
5 5 (10.20%) OOP
5 5 (10.20%) Problem-Solving
5 5 (10.20%) Supply Chain Transformation
6 4 (8.16%) Service Delivery
Programming Languages
1 22 (44.90%) SQL
2 21 (42.86%) Python
3 17 (34.69%) Java
4 16 (32.65%) C++
5 9 (18.37%) C#
6 8 (16.33%) T-SQL
7 6 (12.24%) VB.NET
8 5 (10.20%) JavaScript
8 5 (10.20%) PL/SQL
8 5 (10.20%) VB
8 5 (10.20%) VBA
9 4 (8.16%) PowerShell
9 4 (8.16%) Shell Script
10 3 (6.12%) TypeScript
11 2 (4.08%) Bash Shell
11 2 (4.08%) Perl
12 1 (2.04%) Bourne shell
12 1 (2.04%) Go
12 1 (2.04%) Korn
12 1 (2.04%) Ruby
Qualifications
1 8 (16.33%) Degree
2 4 (8.16%) SC Cleared
2 4 (8.16%) Security Cleared
3 2 (4.08%) CCNP
3 2 (4.08%) Cisco Certification
3 2 (4.08%) CISSP
4 1 (2.04%) Microsoft Certification
Quality Assurance & Compliance
1 2 (4.08%) GDPR
1 2 (4.08%) QA
1 2 (4.08%) SLA
2 1 (2.04%) JTAG
2 1 (2.04%) PMBOK
System Software
1 3 (6.12%) Docker
2 2 (4.08%) VMware Infrastructure
3 1 (2.04%) Active Directory
3 1 (2.04%) RACF
3 1 (2.04%) Terminal Server
Systems Management
1 3 (6.12%) Kubernetes
1 3 (6.12%) Terraform
2 2 (4.08%) Cisco CUCM
3 1 (2.04%) ITRS Geneos
Vendors
1 14 (28.57%) Oracle
2 3 (6.12%) Cisco
2 3 (6.12%) Microsoft
3 2 (4.08%) VMware
4 1 (2.04%) Google
4 1 (2.04%) Green Hills
4 1 (2.04%) Murex
4 1 (2.04%) QNX
4 1 (2.04%) Red Hat
4 1 (2.04%) Sybase