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 29 May 2025, comparing them to the same period in the previous two years.

6 months to
29 May 2025
Same period 2024 Same period 2023
Rank 373 181 241
Rank change year-on-year -192 +60 +140
Contract jobs citing C 152 575 611
As % of all contract jobs advertised in the UK 0.53% 1.34% 1.09%
As % of the Programming Languages category 1.55% 4.46% 3.17%
Number of daily rates quoted 63 257 323
10th Percentile £269 £396 £375
25th Percentile £313 £463 £457
Median daily rate (50th Percentile) £492 £536 £560
Median % change year-on-year -8.21% -4.29% -2.61%
75th Percentile £638 £600 £675
90th Percentile £686 £693 £800
UK excluding London median daily rate £396 £544 £500
% change year-on-year -27.26% +8.75% -
Number of hourly rates quoted 35 193 108
10th Percentile £53.20 £46.25 £37.80
25th Percentile £59.50 £56.65 £48.71
Median hourly rate £68.00 £65.00 £59.45
Median % change year-on-year +4.62% +9.33% +6.17%
75th Percentile £81.25 £70.00 £65.19
90th Percentile £85.00 £85.00 £77.00
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 9,807 12,901 19,292
As % of all contract IT jobs advertised in the UK 34.04% 30.12% 34.28%
Number of daily rates quoted 6,680 9,183 13,883
10th Percentile £358 £350 £388
25th Percentile £413 £425 £463
Median daily rate (50th Percentile) £515 £525 £550
Median % change year-on-year -1.90% -4.55% -
75th Percentile £626 £650 £678
90th Percentile £757 £763 £788
UK excluding London median daily rate £475 £488 £500
% change year-on-year -2.56% -2.50% -
Number of hourly rates quoted 218 513 437
10th Percentile £27.00 £32.25 £26.39
25th Percentile £34.12 £46.25 £50.00
Median hourly rate £57.50 £62.36 £62.50
Median % change year-on-year -7.79% -0.23% +22.11%
75th Percentile £68.75 £70.00 £70.00
90th Percentile £85.00 £77.50 £78.48
UK excluding London median hourly rate £63.37 £62.50 £62.50
% change year-on-year +1.40% - +22.59%

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 29 May 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 29 May 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 29 May 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 -181 123 £513 -4.74% 2,983
UK excluding London -156 80 £396 -27.26% 3,164
London +12 52 £625 +25.00% 223
Work from Home -78 47 £488 -8.88% 1,153
East of England -35 28 £400 -27.27% 584
South West -26 18 £600 +3.23% 396
Scotland +8 13 £293 -40.76% 205
South East -53 8 £500 -9.09% 780
North of England -11 6 £375 -28.57% 630
East Midlands +5 5 £168 -62.36% 241
Midlands -47 5 £168 -68.69% 568
North West -5 3 £375 -28.57% 275
Wales +5 2 £525 - 95
Yorkshire +5 2 - - 256
North East -6 1 - - 100

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 13 (8.55%) Confluence
2 11 (7.24%) Apache Spark
3 2 (1.32%) Tomcat
4 1 (0.66%) Apache
4 1 (0.66%) Ethereum
4 1 (0.66%) Hyperledger
4 1 (0.66%) IBM HTTP Server
4 1 (0.66%) MetaMask
4 1 (0.66%) nginx
4 1 (0.66%) SAS
Applications
1 10 (6.58%) Simulink
2 2 (1.32%) CANalyzer
3 1 (0.66%) Microsoft Excel
Business Applications
1 3 (1.97%) BASE24
2 2 (1.32%) LabWindows
3 1 (0.66%) R3 Corda
3 1 (0.66%) SAP CX
3 1 (0.66%) SAP Hybris
Cloud Services
1 25 (16.45%) AWS
2 18 (11.84%) Azure
3 10 (6.58%) GCP
4 4 (2.63%) Entra ID
5 2 (1.32%) Cloud Computing
5 2 (1.32%) SaaS
6 1 (0.66%) AWS CloudFormation
6 1 (0.66%) Azure DevOps
6 1 (0.66%) Azure ExpressRoute
6 1 (0.66%) Azure Key Vault
6 1 (0.66%) Dynamics 365
6 1 (0.66%) GitHub
6 1 (0.66%) GitHub Actions
6 1 (0.66%) OpenShift
6 1 (0.66%) SAP Commerce Cloud
Communications & Networking
1 8 (5.26%) SSL
2 5 (3.29%) HTTPS
2 5 (3.29%) SSH
3 4 (2.63%) SpaceWire
4 3 (1.97%) 3GPP
4 3 (1.97%) ATM
4 3 (1.97%) Ethernet
4 3 (1.97%) Wireless
5 2 (1.32%) HTTP
5 2 (1.32%) Internet
5 2 (1.32%) LAN
5 2 (1.32%) RS-232
5 2 (1.32%) SAN
5 2 (1.32%) SMS
6 1 (0.66%) Firewall
6 1 (0.66%) Network Security
6 1 (0.66%) NFC
6 1 (0.66%) VPN
6 1 (0.66%) VSAN
6 1 (0.66%) WAN
Database & Business Intelligence
1 12 (7.89%) Oracle Database
2 6 (3.95%) Data Mining
2 6 (3.95%) Relational Database
3 4 (2.63%) Big Data
3 4 (2.63%) MongoDB
3 4 (2.63%) RDBMS
4 3 (1.97%) NonStop SQL
5 2 (1.32%) DB2
5 2 (1.32%) NoSQL
5 2 (1.32%) PostgreSQL
5 2 (1.32%) SQL Server
6 1 (0.66%) Elasticsearch
6 1 (0.66%) Hadoop
Development Applications
1 27 (17.76%) Git
2 14 (9.21%) JIRA
3 11 (7.24%) Oracle Forms
3 11 (7.24%) PVCS
3 11 (7.24%) Subversion
4 6 (3.95%) Jenkins
5 4 (2.63%) Rational DOORS
6 3 (1.97%) Gradle
6 3 (1.97%) Xcode
7 2 (1.32%) Eclipse
7 2 (1.32%) Introscope
7 2 (1.32%) LabVIEW
7 2 (1.32%) LoadRunner
7 2 (1.32%) NetBeans
8 1 (0.66%) Burp Suite
8 1 (0.66%) Gerrit
8 1 (0.66%) GitLab
8 1 (0.66%) Metasploit
8 1 (0.66%) Rational Team Concert
8 1 (0.66%) VectorCAST
General
1 33 (21.71%) Social Skills
2 23 (15.13%) Finance
3 21 (13.82%) Analytical Skills
4 15 (9.87%) Banking
5 7 (4.61%) Investment Banking
6 6 (3.95%) Aerospace
6 6 (3.95%) Financial Institution
7 5 (3.29%) Public Sector
8 4 (2.63%) Electronics
8 4 (2.63%) Manufacturing
8 4 (2.63%) Marketing
9 3 (1.97%) Automotive
9 3 (1.97%) Military
9 3 (1.97%) Organisational Skills
9 3 (1.97%) Telecoms
10 2 (1.32%) Aviation
10 2 (1.32%) Avionics
10 2 (1.32%) Front Office
10 2 (1.32%) Law
11 1 (0.66%) Documentation Skills
Job Titles
1 35 (23.03%) Developer
2 27 (17.76%) Software Engineer
3 19 (12.50%) Senior
4 13 (8.55%) Support Engineer
5 12 (7.89%) Design Engineer
6 11 (7.24%) Embedded Engineer
6 11 (7.24%) Oracle Developer
6 11 (7.24%) Product Engineer
6 11 (7.24%) Products Support Engineer
6 11 (7.24%) Software Support Engineer
7 10 (6.58%) Lead
7 10 (6.58%) Machine Learning Engineer
8 9 (5.92%) C++ Developer
8 9 (5.92%) Linux Engineer
9 8 (5.26%) FPGA Design Engineer
9 8 (5.26%) FPGA Engineer
9 8 (5.26%) Linux Support
9 8 (5.26%) Linux Support Engineer
10 7 (4.61%) C Software Engineer
10 7 (4.61%) Embedded Software Engineer
Libraries, Frameworks & Software Standards
1 14 (9.21%) Middleware
2 11 (7.24%) Java EE
3 7 (4.61%) HTML
4 6 (3.95%) .NET
4 6 (3.95%) POSIX
5 5 (3.29%) React
5 5 (3.29%) XML
6 4 (2.63%) Node.js
6 4 (2.63%) Ray
7 3 (1.97%) CSS
7 3 (1.97%) OAuth
7 3 (1.97%) Spring
7 3 (1.97%) STL
7 3 (1.97%) Web Services
7 3 (1.97%) Yocto
8 2 (1.32%) EntireX
8 2 (1.32%) J2EE
8 2 (1.32%) JSON
8 2 (1.32%) Spring Boot
8 2 (1.32%) Vue
Miscellaneous
1 14 (9.21%) Algorithms
2 13 (8.55%) Distributed Systems
3 12 (7.89%) Embedded Systems
3 12 (7.89%) FPGA
4 10 (6.58%) Distributed Computing
4 10 (6.58%) VHDL
5 9 (5.92%) Verilog
6 8 (5.26%) Device Driver
7 6 (3.95%) Hedge funds
8 5 (3.29%) Data Structures
8 5 (3.29%) Enterprise Software
8 5 (3.29%) Equities
8 5 (3.29%) IoT
8 5 (3.29%) Onboarding
8 5 (3.29%) Team-Oriented Environment
9 4 (2.63%) Data Protection Act
9 4 (2.63%) Mainframe
9 4 (2.63%) PCIe
9 4 (2.63%) Tandem
9 4 (2.63%) Virtual Team
Operating Systems
1 57 (37.50%) Linux
2 19 (12.50%) Unix
3 16 (10.53%) Windows
4 13 (8.55%) Ubuntu
5 3 (1.97%) AIX
5 3 (1.97%) Android
5 3 (1.97%) Apple iOS
5 3 (1.97%) FreeRTOS
6 2 (1.32%) OpenVMS
6 2 (1.32%) VMS
6 2 (1.32%) Windows Server
7 1 (0.66%) Embedded Linux
7 1 (0.66%) Red Hat Enterprise Linux
Processes & Methodologies
1 42 (27.63%) Software Engineering
2 22 (14.47%) Agile
2 22 (14.47%) Problem-Solving
3 17 (11.18%) Technical Leadership
4 16 (10.53%) Artificial Intelligence
5 15 (9.87%) CI/CD
5 15 (9.87%) Unit Testing
6 14 (9.21%) Machine Learning
7 13 (8.55%) Signal Processing
8 12 (7.89%) Continuous Deployment
8 12 (7.89%) Data Modelling
9 11 (7.24%) Cryptography
9 11 (7.24%) ETL
9 11 (7.24%) Technical Analysis
10 10 (6.58%) Algorithmic Trading
10 10 (6.58%) Computer Science
10 10 (6.58%) Continuous Integration
10 10 (6.58%) Deep Learning
10 10 (6.58%) Electronic Trading
10 10 (6.58%) Project Management
Programming Languages
1 75 (49.34%) C++
2 58 (38.16%) Java
3 47 (30.92%) Python
4 29 (19.08%) Shell Script
5 22 (14.47%) SQL
6 20 (13.16%) JavaScript
7 13 (8.55%) Ada
8 11 (7.24%) PL/SQL
8 11 (7.24%) ProC
9 10 (6.58%) Go
10 8 (5.26%) ActionScript
10 8 (5.26%) ActionScript 2.0
10 8 (5.26%) Embedded C
10 8 (5.26%) SystemVerilog
11 6 (3.95%) Bash
11 6 (3.95%) C#
12 5 (3.29%) Assembly Language
13 4 (2.63%) COBOL
13 4 (2.63%) Ruby
13 4 (2.63%) Tcl
Qualifications
1 32 (21.05%) Degree
2 20 (13.16%) Security Cleared
3 13 (8.55%) Master's Degree
3 13 (8.55%) SC Cleared
4 10 (6.58%) PhD
5 4 (2.63%) Computer Science Degree
5 4 (2.63%) DV Cleared
6 3 (1.97%) BPSS Clearance
7 2 (1.32%) AWS Certification
7 2 (1.32%) Azure Certification
8 1 (0.66%) GPEN
8 1 (0.66%) GWAPT
8 1 (0.66%) OSCE
8 1 (0.66%) OSCP
Quality Assurance & Compliance
1 4 (2.63%) GDPR
2 3 (1.97%) PCI DSS
3 2 (1.32%) HIPAA
3 2 (1.32%) ISO 8583
3 2 (1.32%) MISRA
3 2 (1.32%) MISRA C
3 2 (1.32%) QA
3 2 (1.32%) Software Quality Assurance
4 1 (0.66%) IEC 61508
4 1 (0.66%) MIL-STD-1553
4 1 (0.66%) NIST
System Software
1 7 (4.61%) Firmware
2 5 (3.29%) Active Directory
2 5 (3.29%) Docker
3 3 (1.97%) QEMU
4 2 (1.32%) Embedded Firmware
4 2 (1.32%) VMware Infrastructure
5 1 (0.66%) Hyper-V
5 1 (0.66%) KVM
5 1 (0.66%) VMware NSX
5 1 (0.66%) vSphere
5 1 (0.66%) Xen
Systems Management
1 11 (7.24%) Kubernetes
2 5 (3.29%) Istio
3 3 (1.97%) Ansible
3 3 (1.97%) Single Sign-On
3 3 (1.97%) Terraform
4 2 (1.32%) CA Wily
5 1 (0.66%) Functional Safety
5 1 (0.66%) Grafana
5 1 (0.66%) ITRS Geneos
5 1 (0.66%) Podman
5 1 (0.66%) Prometheus
5 1 (0.66%) WMI
5 1 (0.66%) ZABBIX
Vendors
1 14 (9.21%) Red Hat
2 13 (8.55%) Oracle
3 9 (5.92%) IBM
3 9 (5.92%) Intel
3 9 (5.92%) Microsoft
4 8 (5.26%) Microsemi
4 8 (5.26%) Xilinx
5 5 (3.29%) Hitachi
5 5 (3.29%) HP
5 5 (3.29%) IBM Sterling
5 5 (3.29%) Splunk
6 4 (2.63%) SAP
7 3 (1.97%) VMware
8 2 (1.32%) AppDynamics
8 2 (1.32%) Atlassian
8 2 (1.32%) EMC
8 2 (1.32%) Fujitsu
8 2 (1.32%) Google
8 2 (1.32%) QNX
8 2 (1.32%) Software AG