C Contracts

C
UK

The table below provides summary statistics for contract job vacancies requiring C skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited C over the 6 months leading up to 30 June 2025, comparing them to the same period in the previous two years.

6 months to
30 Jun 2025
Same period 2024 Same period 2023
Rank 369 191 234
Rank change year-on-year -178 +43 +117
Contract jobs citing C 168 542 628
As % of all contract jobs advertised in the UK 0.55% 1.26% 1.13%
As % of the Programming Languages category 1.63% 4.11% 3.35%
Number of daily rates quoted 72 241 336
10th Percentile £274 £388 £363
25th Percentile £366 £450 £436
Median daily rate (50th Percentile) £496 £535 £550
Median % change year-on-year -7.29% -2.73% -4.35%
75th Percentile £638 £588 £661
90th Percentile £681 £675 £810
UK excluding London median daily rate £400 £538 £525
% change year-on-year -25.65% +2.48% +2.19%
Number of hourly rates quoted 33 169 114
10th Percentile £54.40 £46.25 £37.80
25th Percentile £59.00 £56.65 £48.95
Median hourly rate £68.00 £65.00 £60.00
Median % change year-on-year +4.62% +8.33% +7.14%
75th Percentile £75.00 £70.00 £65.75
90th Percentile £83.50 £85.00 £90.00
UK excluding London median hourly rate £68.00 £65.00 £65.00
% change year-on-year +4.62% - +14.04%

All Programming Languages
UK

C falls under the Programming Languages category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring coding skills.

Contract vacancies with a requirement for coding skills 10,329 13,186 18,747
As % of all contract IT jobs advertised in the UK 33.70% 30.54% 33.65%
Number of daily rates quoted 6,970 9,253 13,420
10th Percentile £350 £350 £375
25th Percentile £413 £425 £454
Median daily rate (50th Percentile) £511 £525 £550
Median % change year-on-year -2.76% -4.55% -
75th Percentile £625 £650 £675
90th Percentile £750 £775 £790
UK excluding London median daily rate £475 £490 £500
% change year-on-year -3.06% -2.00% -
Number of hourly rates quoted 249 540 448
10th Percentile £26.21 £31.25 £27.00
25th Percentile £34.48 £46.25 £50.00
Median hourly rate £55.00 £62.50 £61.60
Median % change year-on-year -12.00% +1.46% +17.33%
75th Percentile £68.00 £70.00 £70.30
90th Percentile £80.00 £75.00 £79.28
UK excluding London median hourly rate £62.25 £65.00 £62.50
% change year-on-year -4.23% +4.00% +18.99%

C
Job Vacancy Trend

Job postings citing C as a proportion of all IT jobs advertised.

Job vacancy trend for C in the UK

C
Contractor Daily Rate Trend

3-month moving average daily rate quoted in jobs citing C.

Daily rate trend for C in the UK

C
Daily Rate Histogram

Daily rate distribution for jobs citing C over the 6 months to 30 June 2025.

Daily rate histogram for C in the UK

C
Contractor Hourly Rate Trend

3-month moving average hourly rates quoted in jobs citing C.

Hourly rate trend for C in the UK

C
Hourly Rate Histogram

Hourly rate distribution of jobs citing C over the 6 months to 30 June 2025.

Hourly rate histogram for C in the UK

C
Top 15 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing C within the UK over the 6 months to 30 June 2025. 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
Jobs
England -177 138 £540 +0.93% 2,252
UK excluding London -173 82 £400 -25.65% 1,466
London +19 64 £613 +22.50% 926
Work from Home -58 45 £475 -11.21% 889
East of England -33 31 £400 -27.27% 346
South West -23 20 £575 +3.37% 226
Scotland +1 14 £300 -54.29% 138
North of England -18 6 £375 -27.88% 208
South East -45 6 £500 -9.09% 353
Midlands -38 5 £75 -85.98% 158
East Midlands +1 4 £75 -83.15% 48
North West -3 4 £375 -27.88% 104
North East -3 1 - - 16
Yorkshire -4 1 - - 88
West Midlands -40 1 - - 110

C
Co-occurring Skills and Capabilities by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 14 (8.33%) Confluence
2 12 (7.14%) Apache Spark
3 5 (2.98%) WebLogic
4 4 (2.38%) WebSphere
5 1 (0.60%) Apache
5 1 (0.60%) Ethereum
5 1 (0.60%) Hyperledger
5 1 (0.60%) IBM HTTP Server
5 1 (0.60%) MetaMask
5 1 (0.60%) nginx
5 1 (0.60%) SAS
5 1 (0.60%) Tomcat
5 1 (0.60%) Tuxedo
Applications
1 9 (5.36%) Simulink
2 2 (1.19%) CANalyzer
Business Applications
1 2 (1.19%) BASE24
1 2 (1.19%) LabWindows
2 1 (0.60%) Dynamics NAV
2 1 (0.60%) R3 Corda
2 1 (0.60%) SAP CX
2 1 (0.60%) SAP Hybris
Cloud Services
1 30 (17.86%) AWS
2 22 (13.10%) Azure
3 11 (6.55%) GCP
4 5 (2.98%) GitHub
5 4 (2.38%) Entra ID
6 2 (1.19%) Cloud Computing
6 2 (1.19%) OpenShift
6 2 (1.19%) SaaS
7 1 (0.60%) AWS CloudFormation
7 1 (0.60%) Azure DevOps
7 1 (0.60%) Azure ExpressRoute
7 1 (0.60%) Azure Key Vault
7 1 (0.60%) Dynamics 365
7 1 (0.60%) GitHub Actions
7 1 (0.60%) npm
7 1 (0.60%) SAP Commerce Cloud
Communications & Networking
1 7 (4.17%) SSL
2 5 (2.98%) SpaceWire
3 4 (2.38%) HTTPS
3 4 (2.38%) SSH
4 3 (1.79%) 3GPP
4 3 (1.79%) Ethernet
4 3 (1.79%) Wireless
5 2 (1.19%) ATM
5 2 (1.19%) Internet
5 2 (1.19%) LAN
5 2 (1.19%) NFC
5 2 (1.19%) RS-232
5 2 (1.19%) SAN
5 2 (1.19%) SMS
6 1 (0.60%) AMQP
6 1 (0.60%) HTTP
6 1 (0.60%) Network Security
6 1 (0.60%) VPN
6 1 (0.60%) VSAN
6 1 (0.60%) WAN
Database & Business Intelligence
1 12 (7.14%) Oracle Database
2 8 (4.76%) Big Data
3 7 (4.17%) Data Mining
3 7 (4.17%) Relational Database
4 5 (2.98%) RDBMS
5 4 (2.38%) HPCC
6 3 (1.79%) MongoDB
7 2 (1.19%) Data Lake
7 2 (1.19%) DB2
7 2 (1.19%) NonStop SQL
7 2 (1.19%) NoSQL
7 2 (1.19%) PostgreSQL
8 1 (0.60%) Elasticsearch
8 1 (0.60%) Hadoop
8 1 (0.60%) InfluxDB
8 1 (0.60%) SQL Server
Development Applications
1 33 (19.64%) Git
2 15 (8.93%) JIRA
3 11 (6.55%) Oracle Forms
3 11 (6.55%) PVCS
3 11 (6.55%) Subversion
4 8 (4.76%) Jenkins
5 6 (3.57%) GitLab
5 6 (3.57%) Gradle
6 4 (2.38%) Rational DOORS
6 4 (2.38%) Xcode
7 3 (1.79%) Maven
8 2 (1.19%) Clang
8 2 (1.19%) Eclipse
8 2 (1.19%) GCC
8 2 (1.19%) LabVIEW
8 2 (1.19%) NetBeans
9 1 (0.60%) Burp Suite
9 1 (0.60%) CANoe
9 1 (0.60%) Gerrit
9 1 (0.60%) Rational Team Concert
General
1 32 (19.05%) Social Skills
2 25 (14.88%) Finance
3 21 (12.50%) Analytical Skills
4 16 (9.52%) Banking
5 7 (4.17%) Financial Institution
5 7 (4.17%) Investment Banking
5 7 (4.17%) Public Sector
6 6 (3.57%) Aerospace
6 6 (3.57%) Electronics
6 6 (3.57%) Manufacturing
6 6 (3.57%) Marketing
7 5 (2.98%) Telecoms
8 4 (2.38%) Law
9 3 (1.79%) Automotive
9 3 (1.79%) Military
9 3 (1.79%) Organisational Skills
10 2 (1.19%) Aviation
10 2 (1.19%) Avionics
10 2 (1.19%) Front Office
11 1 (0.60%) Dutch Language
Job Titles
1 36 (21.43%) Developer
2 34 (20.24%) Software Engineer
3 16 (9.52%) Senior
4 14 (8.33%) Support Engineer
5 12 (7.14%) Lead
6 11 (6.55%) Embedded Engineer
6 11 (6.55%) Machine Learning Engineer
6 11 (6.55%) Oracle Developer
6 11 (6.55%) Product Engineer
6 11 (6.55%) Products Support Engineer
6 11 (6.55%) Software Support Engineer
7 9 (5.36%) C++ Developer
7 9 (5.36%) C++ Software Engineer
7 9 (5.36%) Linux Engineer
8 8 (4.76%) C Software Engineer
8 8 (4.76%) C/C++ Software Engineer
8 8 (4.76%) Java Engineer
8 8 (4.76%) Linux Support
8 8 (4.76%) Linux Support Engineer
8 8 (4.76%) Systems Engineer
Libraries, Frameworks & Software Standards
1 17 (10.12%) Middleware
2 15 (8.93%) HTML
3 11 (6.55%) Java EE
4 9 (5.36%) XML
5 8 (4.76%) .NET
5 8 (4.76%) Node.js
6 7 (4.17%) JSON
7 6 (3.57%) POSIX
7 6 (3.57%) Spring
8 5 (2.98%) React
9 4 (2.38%) CSS
9 4 (2.38%) Ray
10 3 (1.79%) OAuth
10 3 (1.79%) Spring Boot
10 3 (1.79%) STL
10 3 (1.79%) Yocto
11 2 (1.19%) AngularJS
11 2 (1.19%) TensorFlow
11 2 (1.19%) Vue
11 2 (1.19%) Web Services
Miscellaneous
1 14 (8.33%) Distributed Systems
2 13 (7.74%) Algorithms
2 13 (7.74%) Embedded Systems
3 11 (6.55%) Distributed Computing
4 7 (4.17%) Device Driver
4 7 (4.17%) FPGA
4 7 (4.17%) Hedge funds
5 6 (3.57%) Data Structures
6 5 (2.98%) Enterprise Software
6 5 (2.98%) Equities
6 5 (2.98%) Onboarding
6 5 (2.98%) Team-Oriented Environment
6 5 (2.98%) Verilog
6 5 (2.98%) VHDL
7 4 (2.38%) EMV
7 4 (2.38%) Mainframe
7 4 (2.38%) Mobile App
7 4 (2.38%) Mobile Banking
7 4 (2.38%) PCIe
7 4 (2.38%) Tandem
Operating Systems
1 60 (35.71%) Linux
2 24 (14.29%) Windows
3 23 (13.69%) Unix
4 13 (7.74%) Ubuntu
5 4 (2.38%) Android
5 4 (2.38%) Apple iOS
5 4 (2.38%) FreeRTOS
6 2 (1.19%) AIX
6 2 (1.19%) OpenVMS
6 2 (1.19%) Red Hat Enterprise Linux
6 2 (1.19%) VMS
6 2 (1.19%) Windows Server
7 1 (0.60%) CentOS
7 1 (0.60%) Embedded Linux
7 1 (0.60%) VxWorks
Processes & Methodologies
1 52 (30.95%) Software Engineering
2 27 (16.07%) Agile
3 24 (14.29%) Problem-Solving
4 17 (10.12%) CI/CD
4 17 (10.12%) Technical Leadership
5 16 (9.52%) Artificial Intelligence
5 16 (9.52%) Machine Learning
5 16 (9.52%) Unit Testing
6 15 (8.93%) Data Modelling
6 15 (8.93%) ETL
7 12 (7.14%) Computer Science
7 12 (7.14%) Continuous Deployment
7 12 (7.14%) Continuous Integration
8 11 (6.55%) Cryptography
8 11 (6.55%) Deep Learning
8 11 (6.55%) Technical Analysis
9 10 (5.95%) Algorithmic Trading
9 10 (5.95%) DevOps
9 10 (5.95%) Low Latency
9 10 (5.95%) Scrum
Programming Languages
1 100 (59.52%) C++
2 73 (43.45%) Java
3 58 (34.52%) Python
4 32 (19.05%) Shell Script
5 28 (16.67%) SQL
6 22 (13.10%) JavaScript
7 16 (9.52%) PL/SQL
8 13 (7.74%) Ada
9 12 (7.14%) Bash
10 11 (6.55%) Go
10 11 (6.55%) ProC
11 8 (4.76%) C#
11 8 (4.76%) PowerShell
12 7 (4.17%) ActionScript
12 7 (4.17%) ActionScript 2.0
13 6 (3.57%) MATLAB
14 5 (2.98%) Assembly Language
14 5 (2.98%) Embedded C
14 5 (2.98%) Ruby
14 5 (2.98%) Tcl
Qualifications
1 28 (16.67%) Degree
2 26 (15.48%) Security Cleared
3 17 (10.12%) SC Cleared
4 14 (8.33%) Master's Degree
5 11 (6.55%) PhD
6 5 (2.98%) DV Cleared
7 4 (2.38%) Computer Science Degree
8 3 (1.79%) BPSS Clearance
9 2 (1.19%) AWS Certification
9 2 (1.19%) Azure Certification
10 1 (0.60%) GPEN
10 1 (0.60%) GWAPT
10 1 (0.60%) OSCE
10 1 (0.60%) OSCP
Quality Assurance & Compliance
1 4 (2.38%) GDPR
2 3 (1.79%) MISRA
2 3 (1.79%) MISRA C
2 3 (1.79%) PCI DSS
2 3 (1.79%) QA
3 2 (1.19%) HIPAA
3 2 (1.19%) ISO 8583
3 2 (1.19%) Software Quality Assurance
4 1 (0.60%) AUTOSAR
4 1 (0.60%) IEC 61508
4 1 (0.60%) MIL-STD-1553
4 1 (0.60%) NIST
System Software
1 7 (4.17%) Active Directory
1 7 (4.17%) Docker
1 7 (4.17%) Firmware
2 3 (1.79%) Embedded Firmware
2 3 (1.79%) QEMU
3 1 (0.60%) Hyper-V
3 1 (0.60%) KVM
3 1 (0.60%) VMware Infrastructure
3 1 (0.60%) VMware NSX
3 1 (0.60%) vSphere
3 1 (0.60%) Xen
Systems Management
1 11 (6.55%) Kubernetes
2 6 (3.57%) Istio
3 4 (2.38%) Ansible
4 3 (1.79%) Single Sign-On
4 3 (1.79%) Terraform
5 2 (1.19%) Grafana
6 1 (0.60%) CA Wily
6 1 (0.60%) Functional Safety
6 1 (0.60%) ITRS Geneos
6 1 (0.60%) Podman
6 1 (0.60%) Prometheus
6 1 (0.60%) WMI
6 1 (0.60%) ZABBIX
Vendors
1 17 (10.12%) Oracle
2 14 (8.33%) Red Hat
3 12 (7.14%) Microsoft
4 9 (5.36%) IBM
5 8 (4.76%) SAP
6 6 (3.57%) Dynatrace
6 6 (3.57%) Hitachi
7 4 (2.38%) HP
7 4 (2.38%) IBM Sterling
7 4 (2.38%) Intel
7 4 (2.38%) ServiceNow
7 4 (2.38%) Splunk
8 3 (1.79%) Microsemi
8 3 (1.79%) Xilinx
9 2 (1.19%) Atlassian
9 2 (1.19%) EMC
9 2 (1.19%) Fujitsu
9 2 (1.19%) Salesforce
9 2 (1.19%) Software AG
9 2 (1.19%) VMware