The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for C skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited C over the 3 months to 29 March 2017 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
East of England / Hertfordshire
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 39 45 42
Rank change year-on-year +6 -3  
Contract jobs citing C 21 13 21
As % of all contract IT jobs advertised in Hertfordshire 3.58% 1.89% 3.05%
As % of the Programming Languages category 9.77% 7.14% 8.54%
Number of daily rates quoted 3 3 8
Median daily rate £350 £350 £388
Median daily rate % change year-on-year - -9.67%  
UK excluding London median daily rate £420 £375 £350
% change year-on-year +12.00% +7.14%  
Number of hourly rates quoted 9 5 7
Median hourly rate £45.71 £49.50 £37.50
Median hourly rate % change year-on-year -7.66% +32.00%  
90% offered a hourly rate of more than £31.50 £20.54 £32.50
10% offered a hourly rate of more than £50.05 £49.80 £39.10
UK excluding London median hourly rate £42.50 £40.00 £36.00
% change year-on-year +6.25% +11.11%  

C is in the programming language skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for programming language skills.

Contract Programming Language Skills
Hertfordshire
Contract job vacancies with a requirement for programming language skills 215 182 246
As % of all contract IT job vacancies advertised in Hertfordshire 36.63% 26.49% 35.70%
Number of daily rates quoted 140 105 112
Median daily rate £413 £375 £375
Median daily rate % change year-on-year +10.00% -  
90% offered a daily rate of more than £250 £300 £275
10% offered a daily rate of more than £606 £525 £500
UK excluding London median daily rate £388 £375 £350
% change year-on-year +3.33% +7.14%  
Number of hourly rates quoted 19 14 8
Median hourly rate £45.71 £49.50 £37.50
Median hourly rate % change year-on-year -7.66% +32.00%  
90% offered a hourly rate of more than £37.50 £37.50 £32.50
10% offered a hourly rate of more than £52.50 £50.00 £40.00
UK excluding London median hourly rate £41.50 £40.00 £36.00
% change year-on-year +3.75% +11.11%  

C
Job Vacancy Trend in Hertfordshire

The job posting trend of jobs advertised in Hertfordshire citing C as a proportion of all contract or permanent IT jobs with a match in the Programming Languages category.

Job vacancy trend for C in Hertfordshire

C
Contractor Daily Rate Trend in Hertfordshire

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing C in Hertfordshire.

Contractor daily rate trend for C in Hertfordshire

C
Contractor Hourly Rate Trend in Hertfordshire

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing C in Hertfordshire.

Contractor hourly rate trend for C in Hertfordshire

C
Contractor Hourly Rate Histogram in Hertfordshire

The hourly rate distribution of IT jobs citing C in Hertfordshire over the 3 months to 29 March 2017.

Contractor hourly rate histogram for C in Hertfordshire

C
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing C within the Hertfordshire region over the 3 months to 29 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford +3 4 £350 +16.66% 1
Welwyn Garden City -4 3 - -
Stevenage -2 2 - - 2
C
East of England

For the 6 months to 29 March 2017, IT contractor jobs citing C also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Hertfordshire region with a requirement for C.

1 20 (51.28%) Software Engineering
2 18 (46.15%) C++
3 17 (43.59%) Windows
4 16 (41.03%) Linux
5 15 (38.46%) Java
5 15 (38.46%) Configuration Management
6 13 (33.33%) SQL
7 11 (28.21%) PostgreSQL
8 10 (25.64%) Finance
9 9 (23.08%) Python
9 9 (23.08%) Integration Testing
10 8 (20.51%) SC Cleared
10 8 (20.51%) Security Cleared
10 8 (20.51%) TCP/IP
10 8 (20.51%) MySQL
11 7 (17.95%) Perl
11 7 (17.95%) Bash Shell
11 7 (17.95%) Ruby
12 6 (15.38%) Clustering
12 6 (15.38%) JavaScript
12 6 (15.38%) Apache
12 6 (15.38%) Tomcat
12 6 (15.38%) Firewall
12 6 (15.38%) LAMP
12 6 (15.38%) MATLAB
12 6 (15.38%) SSL
12 6 (15.38%) LAPP Stack
13 5 (12.82%) Simulink
13 5 (12.82%) Hibernate
13 5 (12.82%) UML

C
Co-occurring IT Skills in Hertfordshire 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 6 (15.38%) Apache
1 6 (15.38%) Tomcat
2 2 (5.13%) Elasticsearch
2 2 (5.13%) MS Exchange
2 2 (5.13%) Skype for Business
Applications
1 5 (12.82%) Simulink
2 2 (5.13%) MS Excel
3 1 (2.56%) MS Office
Business Applications
1 4 (10.26%) LabWindows
2 2 (5.13%) Payment Gateway
3 1 (2.56%) Salesforce.com CRM
Cloud Services
1 1 (2.56%) Amazon AWS
1 1 (2.56%) GitHub
Communications & Networking
1 8 (20.51%) TCP/IP
2 6 (15.38%) Firewall
2 6 (15.38%) SSL
3 4 (10.26%) RS-422
4 2 (5.13%) LAN
4 2 (5.13%) Skype
4 2 (5.13%) Wireless
Database & Business Intelligence
1 11 (28.21%) PostgreSQL
2 8 (20.51%) MySQL
3 5 (12.82%) Crystal Reports
3 5 (12.82%) MongoDB
3 5 (12.82%) Sybase ASE
4 1 (2.56%) BusinessObjects XI
4 1 (2.56%) SQL Server
4 1 (2.56%) SQL Server 2005
Development Applications
1 5 (12.82%) Rational DOORS
1 5 (12.82%) Rational Rhapsody
2 2 (5.13%) Bugzilla
2 2 (5.13%) JIRA
2 2 (5.13%) Redmine
3 1 (2.56%) Jenkins
General
1 10 (25.64%) Finance
2 2 (5.13%) Multimedia
2 2 (5.13%) Telecoms
3 1 (2.56%) Aerospace
3 1 (2.56%) Banking
3 1 (2.56%) Retail
Job Titles
1 18 (46.15%) Software Engineer
2 7 (17.95%) C++ Software Engineer
3 6 (15.38%) Developer
3 6 (15.38%) Java Developer
4 5 (12.82%) C Software Engineer
4 5 (12.82%) C/C++ Software Engineer
5 4 (10.26%) Architect
5 4 (10.26%) SC Cleared Software Engineer
6 3 (7.69%) Software Test Engineer
6 3 (7.69%) Test Engineer
7 2 (5.13%) Business Architect
7 2 (5.13%) Coordinator
7 2 (5.13%) Embedded Engineer
7 2 (5.13%) Embedded Software Engineer
7 2 (5.13%) HR Coordinator
7 2 (5.13%) Project Coordinator
7 2 (5.13%) Support Engineer
7 2 (5.13%) Systems Engineer
8 1 (2.56%) Access Developer
8 1 (2.56%) Software Support Engineer
Libraries, Frameworks & Software Standards
1 6 (15.38%) LAMP
1 6 (15.38%) LAPP Stack
2 5 (12.82%) AngularJS
2 5 (12.82%) Hibernate
2 5 (12.82%) J2EE
2 5 (12.82%) JSP
2 5 (12.82%) Spring
2 5 (12.82%) Web Services
3 3 (7.69%) .NET
4 2 (5.13%) Spring Boot
5 1 (2.56%) HTML
5 1 (2.56%) Oracle Fusion
Miscellaneous
1 6 (15.38%) Clustering
2 4 (10.26%) Device Driver
2 4 (10.26%) Embedded Systems
3 3 (7.69%) Computer Science
4 2 (5.13%) RIA
5 1 (2.56%) iPad
5 1 (2.56%) Wiki
Operating Systems
1 17 (43.59%) Windows
2 16 (41.03%) Linux
3 4 (10.26%) Unix
4 2 (5.13%) NetWare
5 1 (2.56%) Windows 7
Processes & Methodologies
1 20 (51.28%) Software Engineering
2 15 (38.46%) Configuration Management
3 9 (23.08%) Integration Testing
4 5 (12.82%) UML
5 4 (10.26%) Requirements Management
5 4 (10.26%) Test Strategy
6 3 (7.69%) Stakeholder Management
6 3 (7.69%) Validation
7 2 (5.13%) Business Intelligence
7 2 (5.13%) Data Protection
7 2 (5.13%) DevOps
7 2 (5.13%) High Availability
7 2 (5.13%) ITIL
7 2 (5.13%) Mathematics
7 2 (5.13%) Microservices
7 2 (5.13%) Network Management
7 2 (5.13%) PRINCE2
7 2 (5.13%) Project Management
7 2 (5.13%) User Acceptance Testing
8 1 (2.56%) Continuous Delivery
Programming Languages
1 18 (46.15%) C++
2 15 (38.46%) Java
3 13 (33.33%) SQL
4 9 (23.08%) Python
5 7 (17.95%) Bash Shell
5 7 (17.95%) Perl
5 7 (17.95%) Ruby
6 6 (15.38%) JavaScript
6 6 (15.38%) MATLAB
7 5 (12.82%) T-SQL
8 4 (10.26%) ANSI C
8 4 (10.26%) C#
9 2 (5.13%) VB
10 1 (2.56%) Embedded C
10 1 (2.56%) Embedded C++
10 1 (2.56%) PL/SQL
10 1 (2.56%) PowerShell
10 1 (2.56%) Tcl
Qualifications
1 8 (20.51%) SC Cleared
1 8 (20.51%) Security Cleared
2 2 (5.13%) DBS Check
2 2 (5.13%) HNC
2 2 (5.13%) NVQ Level 3
2 2 (5.13%) RHCE
3 1 (2.56%) Degree
Systems Management
1 3 (7.69%) Puppet
2 2 (5.13%) Salt
3 1 (2.56%) Ansible
3 1 (2.56%) Opscode Chef
3 1 (2.56%) Packer
3 1 (2.56%) Terraform
Vendors
1 5 (12.82%) Sybase
2 4 (10.26%) Serena
3 2 (5.13%) Apple
3 2 (5.13%) Microsoft
3 2 (5.13%) Oracle
4 1 (2.56%) Remedy
4 1 (2.56%) Salesforce.com