Period
to 10 May 2021

The following table provides summary statistics for permanent job vacancies with a requirement for C skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited C over the 6 months to 10 May 2021 with a comparison to the same period in the previous 2 years.

C
UK
6 months to
10 May 2021
Same period 2020 Same period 2019
Rank 120 104 91
Rank change year-on-year -16 -13 +12
Permanent jobs citing C 2,461 2,974 4,996
As % of all permanent jobs advertised in the UK 2.81% 2.97% 3.40%
As % of the Programming Languages category 5.10% 5.43% 6.27%
Number of salaries quoted 1,631 2,356 3,536
10th Percentile £35,000 £32,500 £29,125
25th Percentile £42,500 £38,750 £37,500
Median annual salary (50th Percentile) £55,000 £52,500 £50,000
Median % change year-on-year +4.76% +5.00% -
75th Percentile £72,500 £65,000 £63,750
90th Percentile £85,000 £85,000 £83,750
UK excluding London median annual salary £50,250 £50,000 £47,500
% change year-on-year +0.50% +5.26% +2.15%

C is in the Programming Languages category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for coding skills.

All Programming Languages
UK
Permanent vacancies with a requirement for coding skills 48,226 54,736 79,700
As % of all permanent IT jobs advertised in the UK 54.97% 54.70% 54.31%
Number of salaries quoted 37,945 45,528 65,747
10th Percentile £33,750 £32,500 £31,250
25th Percentile £42,500 £41,000 £37,500
Median annual salary (50th Percentile) £55,000 £55,000 £52,500
Median % change year-on-year - +4.76% +5.00%
75th Percentile £75,000 £72,500 £70,000
90th Percentile £90,000 £90,000 £85,000
UK excluding London median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -

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
Salary Trend

3-month moving average salary quoted in jobs citing C.

Salary trend for C in the UK

C
Salary Histogram

Salary distribution for jobs citing C over the 6 months to 10 May 2021.

Salary histogram for C in the UK

C
Top 17 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing C within the UK over the 6 months to 10 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England -17 2,198 £55,000 +4.76% 829
UK excluding London -24 1,551 £50,250 +0.50% 722
London +35 746 £65,000 +8.33% 172
Work from Home +15 479 £60,000 -0.83% 125
South East -41 382 £55,000 +4.76% 169
South West -32 318 £52,500 +16.67% 103
North of England +18 300 £55,000 +10.00% 156
Midlands +17 229 £47,500 -5.00% 118
East of England -2 181 £50,000 -6.10% 109
North West -1 142 £47,500 -5.00% 69
Yorkshire +31 139 £65,000 +23.81% 61
West Midlands -23 119 £43,500 -13.00% 69
East Midlands +76 110 £50,000 +5.26% 49
Scotland +12 97 £47,500 -5.00% 50
Northern Ireland +21 31 £42,500 +3.03% 4
North East +20 19 £40,500 -6.36% 26
Wales -3 15 £42,500 +6.25% 15

For the 6 months to 10 May 2021, IT 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 permanent job ads with a requirement for C.

1 1,046 (42.50%) C++
2 753 (30.60%) Software Engineering
3 699 (28.40%) Python
4 685 (27.83%) Social Skills
5 639 (25.97%) Agile Software Development
6 602 (24.46%) Linux
7 503 (20.44%) Java
8 491 (19.95%) Degree
9 370 (15.03%) Problem-Solving
10 369 (14.99%) SQL
11 368 (14.95%) Finance
12 349 (14.18%) C#
13 330 (13.41%) Security Cleared
14 307 (12.47%) Computer Science
15 290 (11.78%) Mathematics
16 257 (10.44%) QA
17 255 (10.36%) Windows
18 249 (10.12%) Analytics
19 246 (10.00%) DevOps
20 240 (9.75%) Microsoft
20 240 (9.75%) Scrum
21 231 (9.39%) SC Cleared
22 224 (9.10%) Test Automation
23 223 (9.06%) JavaScript
24 220 (8.94%) Electronics
24 220 (8.94%) Analytical Skills
25 219 (8.90%) AWS
26 203 (8.25%) Software Testing
27 199 (8.09%) Continuous Integration
28 189 (7.68%) Firmware

C
Co-occurring IT Skills 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 72 (2.93%) Confluence
2 45 (1.83%) SAS
3 34 (1.38%) Apache Spark
4 25 (1.02%) MS Exchange
5 24 (0.98%) Tomcat
6 21 (0.85%) Apache
7 18 (0.73%) Elasticsearch
8 17 (0.69%) IIS
9 16 (0.65%) SharePoint
10 13 (0.53%) ejabberd
10 13 (0.53%) nginx
11 11 (0.45%) Jupyter
12 10 (0.41%) OpenStack
13 9 (0.37%) Tornado
14 8 (0.33%) Apache Pig
14 8 (0.33%) WordPress
15 7 (0.28%) ArcGIS
16 5 (0.20%) Oracle SOA Suite
17 4 (0.16%) Apache Airflow
17 4 (0.16%) Skype for Business
Applications
1 75 (3.05%) Microsoft Office
2 39 (1.58%) Simulink
3 34 (1.38%) Microsoft Excel
4 19 (0.77%) AutoCAD
5 15 (0.61%) Microsoft PowerPoint
6 12 (0.49%) SPSS
7 6 (0.24%) Gephi
8 3 (0.12%) Microsoft Project
9 2 (0.081%) Adobe XD
9 2 (0.081%) Figma
9 2 (0.081%) Photoshop
9 2 (0.081%) Sketch
10 1 (0.041%) Adobe Creative Suite
10 1 (0.041%) Adobe Illustrator
10 1 (0.041%) InVision
10 1 (0.041%) MODO
10 1 (0.041%) MS Visio
10 1 (0.041%) OrCAD
10 1 (0.041%) Quicktime
10 1 (0.041%) Spreadsheet
Business Applications
1 20 (0.81%) Dynamics NAV
2 15 (0.61%) Sparx Enterprise Architect
3 14 (0.57%) Summit
4 7 (0.28%) Oracle EBS
5 6 (0.24%) Dynamics CRM
6 5 (0.20%) Dynamics AX
7 4 (0.16%) Dynamics GP
7 4 (0.16%) Oracle Applications
8 3 (0.12%) NetSuite
8 3 (0.12%) Oracle EBS R12
8 3 (0.12%) Oracle Financials
8 3 (0.12%) SAP GRC
8 3 (0.12%) SAP Oil and Gas
9 2 (0.081%) Cerner Millennium
9 2 (0.081%) Infor M3
9 2 (0.081%) Oracle ERP
9 2 (0.081%) Oracle Payroll
9 2 (0.081%) Sentinel
9 2 (0.081%) Unit4 Business World
10 1 (0.041%) Oracle Procure-to-Pay
Cloud Services
1 219 (8.90%) AWS
2 188 (7.64%) Azure
3 100 (4.06%) GCP
4 72 (2.93%) SaaS
5 71 (2.89%) Power Platform
6 70 (2.84%) Microsoft 365
7 37 (1.50%) GitHub
8 25 (1.02%) Cloud Computing
9 24 (0.98%) PaaS
10 23 (0.93%) Serverless
11 20 (0.81%) PowerApps
12 19 (0.77%) Azure Machine Learning
13 18 (0.73%) AWS Lambda
14 16 (0.65%) AWS CloudFormation
15 13 (0.53%) Amazon EC2
16 11 (0.45%) Dynamics 365
16 11 (0.45%) Google Data Studio
16 11 (0.45%) Trello
17 10 (0.41%) Amazon EKS
17 10 (0.41%) Amazon S3
Communications & Networking
1 143 (5.81%) Wireless
2 124 (5.04%) TCP/IP
3 118 (4.79%) Wi-Fi
4 113 (4.59%) Ethernet
5 84 (3.41%) Firewall
6 78 (3.17%) Wireshark
7 74 (3.01%) Broadband
8 72 (2.93%) Internet
9 70 (2.84%) HTTP
10 57 (2.32%) MQTT
11 44 (1.79%) 802.11
12 43 (1.75%) Bluetooth
12 43 (1.75%) HTTPS
13 38 (1.54%) STUN
13 38 (1.54%) VPN
14 34 (1.38%) MIMO
15 32 (1.30%) DVB
16 31 (1.26%) Modbus
17 29 (1.18%) BGP
18 27 (1.10%) LAN
Database & Business Intelligence
1 125 (5.08%) Big Data
2 89 (3.62%) PostgreSQL
3 74 (3.01%) NoSQL
4 63 (2.56%) SQL Server
5 49 (1.99%) Power BI
6 47 (1.91%) Relational Database
7 46 (1.87%) MySQL
8 41 (1.67%) Redis
8 41 (1.67%) Tableau
9 31 (1.26%) Data Warehouse
10 28 (1.14%) MongoDB
11 24 (0.98%) GIS
12 21 (0.85%) Hadoop
12 21 (0.85%) SQL Server Integration Services
13 20 (0.81%) QlikView
14 19 (0.77%) Data Mining
14 19 (0.77%) Neo4j
15 18 (0.73%) SQL Server Reporting Services
16 17 (0.69%) Apache Cassandra
17 12 (0.49%) Blockchain
Development Applications
1 148 (6.01%) JIRA
2 127 (5.16%) Git (software)
3 95 (3.86%) Jenkins
4 49 (1.99%) Visual Studio
5 48 (1.95%) GitLab
6 47 (1.91%) Subversion
7 31 (1.26%) Eclipse
8 22 (0.89%) Maven
9 21 (0.85%) Selenium
10 20 (0.81%) Cucumber
10 20 (0.81%) IDA Disassembler
11 19 (0.77%) Bitbucket
11 19 (0.77%) TeamCity
12 18 (0.73%) GCC
13 15 (0.61%) Rational Team Concert
14 14 (0.57%) Octopus Deploy
15 13 (0.53%) GDB
15 13 (0.53%) JUnit
15 13 (0.53%) Rational Rhapsody
16 12 (0.49%) Rational DOORS
General
1 685 (27.83%) Social Skills
2 368 (14.95%) Finance
3 220 (8.94%) Analytical Skills
3 220 (8.94%) Electronics
4 124 (5.04%) Marketing
5 122 (4.96%) Manufacturing
6 120 (4.88%) Telecoms
7 113 (4.59%) Public Sector
8 109 (4.43%) Legal
9 91 (3.70%) Games
10 90 (3.66%) Law
11 85 (3.45%) Banking
12 67 (2.72%) Organisational Skills
13 59 (2.40%) Aerospace
14 54 (2.19%) Automotive
15 47 (1.91%) Presentation Skills
15 47 (1.91%) Retail
16 34 (1.38%) Local Government
17 26 (1.06%) Military
18 15 (0.61%) Pharmaceutical
Job Titles
1 499 (20.28%) Software Engineer
2 391 (15.89%) Developer
3 264 (10.73%) Embedded Engineer
4 166 (6.75%) Embedded Software Engineer
5 149 (6.05%) Architect
6 132 (5.36%) Consultant
7 108 (4.39%) Senior Software Engineer
8 107 (4.35%) Software Developer
9 104 (4.23%) Analyst
10 89 (3.62%) C++ Software Engineer
11 79 (3.21%) C Software Engineer
12 72 (2.93%) Linux Engineer
13 70 (2.84%) IT Support
14 66 (2.68%) Systems Engineer
15 65 (2.64%) Wireless Engineer
16 62 (2.52%) C/C++ Software Engineer
17 56 (2.28%) C++ Developer
17 56 (2.28%) Firmware Engineer
18 54 (2.19%) Solutions Architect
19 53 (2.15%) Senior Developer
Libraries, Frameworks & Software Standards
1 124 (5.04%) HTML
2 119 (4.84%) .NET
3 93 (3.78%) CSS
4 83 (3.37%) REST
5 76 (3.09%) Kafka
6 74 (3.01%) React
7 68 (2.76%) Node.js
8 66 (2.68%) RESTful
9 59 (2.40%) 802.1X
10 51 (2.07%) Web Services
10 51 (2.07%) XMPP
11 48 (1.95%) AngularJS
12 45 (1.83%) Spring
13 38 (1.54%) HTML5
14 34 (1.38%) gRPC
15 30 (1.22%) Vue.js
16 29 (1.18%) .NET Core
16 29 (1.18%) XML
17 28 (1.14%) Apache NiFi
17 28 (1.14%) Django
Miscellaneous
1 161 (6.54%) Algorithms
2 134 (5.44%) Self-Motivation
3 131 (5.32%) Management Information System
4 112 (4.55%) Embedded Systems
5 73 (2.97%) Field-Programmable Gate Array
6 69 (2.80%) User Experience
7 59 (2.40%) Robotics
8 46 (1.87%) Data Centre
9 43 (1.75%) Greenfield Project
10 42 (1.71%) Data Structures
11 41 (1.67%) Device Driver
11 41 (1.67%) Driving Licence
12 38 (1.54%) Cyberattack
13 35 (1.42%) Internet of Things
14 34 (1.38%) Mobile App
15 33 (1.34%) Virtual Team
16 31 (1.26%) Enterprise Software
17 25 (1.02%) Cloud Native
18 23 (0.93%) Analytical Mindset
18 23 (0.93%) VHDL
Operating Systems
1 602 (24.46%) Linux
2 255 (10.36%) Windows
3 127 (5.16%) Android
4 117 (4.75%) Unix
5 99 (4.02%) Embedded Linux
6 63 (2.56%) Apple iOS
7 45 (1.83%) CentOS
7 45 (1.83%) Red Hat Enterprise Linux
8 33 (1.34%) Windows Server
9 26 (1.06%) Debian
10 23 (0.93%) Windows 10
11 16 (0.65%) Robot Operating System
12 15 (0.61%) Windows Server 2012
13 12 (0.49%) Windows Server 2008
14 10 (0.41%) Mac OS X
15 8 (0.33%) Windows Server 2016
16 7 (0.28%) FreeRTOS
17 6 (0.24%) Kali Linux
17 6 (0.24%) Ubuntu
17 6 (0.24%) Windows 7
Processes & Methodologies
1 753 (30.60%) Software Engineering
2 639 (25.97%) Agile Software Development
3 370 (15.03%) Problem-Solving
4 307 (12.47%) Computer Science
5 290 (11.78%) Mathematics
6 249 (10.12%) Analytics
7 246 (10.00%) DevOps
8 240 (9.75%) Scrum
9 224 (9.10%) Test Automation
10 203 (8.25%) Software Testing
11 199 (8.09%) Continuous Integration
12 184 (7.48%) Cybersecurity
13 178 (7.23%) Data Science
14 168 (6.83%) Open Source
15 165 (6.70%) Project Management
16 160 (6.50%) Artificial Intelligence
16 160 (6.50%) Mentoring
17 134 (5.44%) Machine Learning
18 131 (5.32%) Microservices
18 131 (5.32%) SDLC
Programming Languages
1 1,046 (42.50%) C++
2 699 (28.40%) Python
3 503 (20.44%) Java
4 369 (14.99%) SQL
5 349 (14.18%) C#
6 223 (9.06%) JavaScript
7 157 (6.38%) Embedded C
8 110 (4.47%) Go
9 102 (4.14%) Bash Shell
10 89 (3.62%) MATLAB
11 81 (3.29%) Embedded C++
12 76 (3.09%) R
13 74 (3.01%) PHP
14 71 (2.89%) Perl
15 58 (2.36%) TypeScript
16 50 (2.03%) Ruby
17 42 (1.71%) PowerShell
18 31 (1.26%) Scala
18 31 (1.26%) VB
19 25 (1.02%) Objective-C
Qualifications
1 491 (19.95%) Degree
2 330 (13.41%) Security Cleared
3 231 (9.39%) SC Cleared
4 176 (7.15%) DV Cleared
5 94 (3.82%) Computer Science Degree
6 84 (3.41%) PhD
7 35 (1.42%) Cisco Certification
8 30 (1.22%) CISSP
9 21 (0.85%) Master's Degree
10 17 (0.69%) Microsoft Certification
11 16 (0.65%) CISM
12 15 (0.61%) CCNA
13 14 (0.57%) HNC
14 13 (0.53%) CEH
14 13 (0.53%) Numerate Degree
15 11 (0.45%) CCNP
15 11 (0.45%) CompTIA Security+
16 10 (0.41%) GIAC
16 10 (0.41%) JNCIP
17 9 (0.37%) Chartered Engineer
Quality Assurance & Compliance
1 257 (10.44%) QA
2 62 (2.52%) MISRA
3 38 (1.54%) SLA
4 34 (1.38%) GDPR
5 25 (1.02%) Def Stans
6 14 (0.57%) ISO/IEC 27001
7 13 (0.53%) PMO
8 12 (0.49%) ISO 13485
8 12 (0.49%) MISRA C
9 11 (0.45%) Data Quality
10 10 (0.41%) IEC 61508
10 10 (0.41%) ISO 26262
10 10 (0.41%) NIST
11 9 (0.37%) GRC
11 9 (0.37%) IEC 62304
11 9 (0.37%) ISO 9001
11 9 (0.37%) PCI DSS
12 7 (0.28%) JTAG
13 5 (0.20%) PSD2
13 5 (0.20%) SEPA
System Software
1 189 (7.68%) Firmware
2 184 (7.48%) Docker
3 46 (1.87%) VMware Infrastructure
4 45 (1.83%) Active Directory
5 19 (0.77%) Kamailio
5 19 (0.77%) VirtualBox
6 17 (0.69%) KVM
7 16 (0.65%) Postfix
8 13 (0.53%) iptables
8 13 (0.53%) QEMU
9 10 (0.41%) VMware ESXi
10 8 (0.33%) vSphere
11 7 (0.28%) Hyper-V
12 6 (0.24%) Apache Flume
12 6 (0.24%) OpenSIPS
12 6 (0.24%) Snort
12 6 (0.24%) Squid
12 6 (0.24%) Xen
13 5 (0.20%) Samba
13 5 (0.20%) Virtual Machines
Systems Management
1 127 (5.16%) Ansible
2 98 (3.98%) Kubernetes
3 50 (2.03%) Kibana
3 50 (2.03%) Puppet
4 48 (1.95%) Terraform
5 38 (1.54%) Graylog
6 22 (0.89%) Opscode Chef
7 16 (0.65%) ZABBIX
8 15 (0.61%) Prometheus
9 13 (0.53%) Galera Cluster
9 13 (0.53%) HAProxy
9 13 (0.53%) vCenter Server
10 10 (0.41%) Nagios
10 10 (0.41%) SELinux
11 8 (0.33%) BMC PATROL
11 8 (0.33%) FlexNet
11 8 (0.33%) Nessus
12 7 (0.28%) QRadar
13 6 (0.24%) Nexpose
13 6 (0.24%) Suricata
Vendors
1 240 (9.75%) Microsoft
2 101 (4.10%) Google
3 80 (3.25%) Oracle
4 64 (2.60%) VMware
5 57 (2.32%) Cisco
6 50 (2.03%) SAP
7 39 (1.58%) Red Hat
8 36 (1.46%) Atlassian
9 33 (1.34%) Splunk
10 30 (1.22%) Databricks
10 30 (1.22%) HP
11 26 (1.06%) IBM
12 25 (1.02%) Juniper
12 25 (1.02%) Klocwork
12 25 (1.02%) Palo Alto
13 23 (0.93%) Apple
14 20 (0.81%) Sparx
15 19 (0.77%) EMC
16 18 (0.73%) Fortinet
16 18 (0.73%) Samsung