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 22 June 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
22 Jun 2017
Same period 2016 Same period 2015
Rank 44 51 48
Rank change year-on-year +7 -3  
Contract jobs citing C 15 8 29
As % of all contract IT jobs advertised in Hertfordshire 2.37% 1.20% 3.25%
As % of the Programming Languages category 5.93% 4.40% 10.00%
Number of daily rates quoted 5 1 12
Median daily rate £425 £460 £325
Median daily rate % change year-on-year -7.60% +41.74%  
90% offered a daily rate of more than £350 £460 £225
10% offered a daily rate of more than £625 £460 £374
UK excluding London median daily rate £413 £381 £350
% change year-on-year +8.19% +8.92%  
Number of hourly rates quoted 4 4 6
Median hourly rate £45.00 £48.45 £32.50
Median hourly rate % change year-on-year -7.12% +49.07%  
UK excluding London median hourly rate £42.50 £39.50 £37.50
% change year-on-year +7.59% +5.33%  

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 253 182 290
As % of all contract IT job vacancies advertised in Hertfordshire 40.03% 27.25% 32.55%
Number of daily rates quoted 146 104 132
Median daily rate £388 £400 £350
Median daily rate % change year-on-year -3.12% +14.28%  
90% offered a daily rate of more than £300 £275 £275
10% offered a daily rate of more than £525 £490 £500
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 11 8 15
Median hourly rate £42.50 £43.70 £32.50
Median hourly rate % change year-on-year -2.74% +34.46%  
90% offered a hourly rate of more than £15.00 £15.00 £20.94
10% offered a hourly rate of more than £46.10 £52.50 £41.25
UK excluding London median hourly rate £42.50 £37.00 £36.00
% change year-on-year +14.86% +2.77%  

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 Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing C in Hertfordshire over the 3 months to 22 June 2017.

Contractor daily rate histogram 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 22 June 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 22 June 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
Stevenage +2 8 - - 3
Watford - 3 £350 - 2
Bishop's Stortford - 1 - -
C
East of England

For the 6 months to 22 June 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 27 (65.85%) Software Engineering
2 21 (51.22%) Windows
2 21 (51.22%) Linux
2 21 (51.22%) Configuration Management
3 18 (43.90%) C++
4 17 (41.46%) Java
5 13 (31.71%) PostgreSQL
5 13 (31.71%) Security Cleared
6 12 (29.27%) Integration Testing
6 12 (29.27%) SQL
7 10 (24.39%) Finance
8 9 (21.95%) Python
8 9 (21.95%) TCP/IP
8 9 (21.95%) SC Cleared
8 9 (21.95%) Test Strategy
9 8 (19.51%) Embedded Systems
10 7 (17.07%) Hibernate
10 7 (17.07%) Spring
10 7 (17.07%) Serena
10 7 (17.07%) LabWindows
10 7 (17.07%) T-SQL
10 7 (17.07%) J2EE
10 7 (17.07%) JavaScript
10 7 (17.07%) Sybase
10 7 (17.07%) Crystal Reports
10 7 (17.07%) JSP
10 7 (17.07%) Web Services
10 7 (17.07%) AngularJS
10 7 (17.07%) MongoDB
10 7 (17.07%) RS-422

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 (14.63%) Apache
1 6 (14.63%) Tomcat
2 4 (9.76%) Elasticsearch
Applications
1 5 (12.20%) Simulink
Business Applications
1 7 (17.07%) LabWindows
2 2 (4.88%) Payment Gateway
3 1 (2.44%) Dynamics NAV
Communications & Networking
1 9 (21.95%) TCP/IP
2 7 (17.07%) RS-422
3 6 (14.63%) Firewall
3 6 (14.63%) SSL
4 4 (9.76%) LAN
5 2 (4.88%) SpaceWire
6 1 (2.44%) Remote Desktop
6 1 (2.44%) SNMP
6 1 (2.44%) WAN
Database & Business Intelligence
1 13 (31.71%) PostgreSQL
2 7 (17.07%) Crystal Reports
2 7 (17.07%) MongoDB
2 7 (17.07%) Sybase ASE
3 6 (14.63%) MySQL
Development Applications
1 5 (12.20%) Rational DOORS
1 5 (12.20%) Rational Rhapsody
2 3 (7.32%) Bugzilla
2 3 (7.32%) ClearCase
2 3 (7.32%) ClearQuest
3 1 (2.44%) GCC
3 1 (2.44%) Git (software)
3 1 (2.44%) SonarQube
General
1 10 (24.39%) Finance
2 6 (14.63%) Telecoms
3 3 (7.32%) Automotive
3 3 (7.32%) Avionics
4 1 (2.44%) Aerospace
4 1 (2.44%) Banking
Job Titles
1 22 (53.66%) Software Engineer
2 8 (19.51%) Developer
2 8 (19.51%) Test Engineer
3 7 (17.07%) C++ Software Engineer
3 7 (17.07%) Java Developer
3 7 (17.07%) Software Test Engineer
4 5 (12.20%) C Software Engineer
4 5 (12.20%) C/C++ Software Engineer
5 4 (9.76%) SC Cleared Software Engineer
5 4 (9.76%) Validation Engineer
6 3 (7.32%) Software Validation Engineer
7 2 (4.88%) Designer
7 2 (4.88%) Embedded Engineer
7 2 (4.88%) Embedded Software Engineer
7 2 (4.88%) Systems Engineer
8 1 (2.44%) Consultant
8 1 (2.44%) Network Designer
8 1 (2.44%) Software Developer
8 1 (2.44%) Support Engineer
8 1 (2.44%) Systems Designer
Libraries, Frameworks & Software Standards
1 7 (17.07%) AngularJS
1 7 (17.07%) Hibernate
1 7 (17.07%) J2EE
1 7 (17.07%) JSP
1 7 (17.07%) Spring
1 7 (17.07%) Web Services
2 6 (14.63%) LAMP
2 6 (14.63%) LAPP Stack
3 4 (9.76%) Spring Boot
4 3 (7.32%) .NET
5 1 (2.44%) POSIX
Miscellaneous
1 8 (19.51%) Embedded Systems
2 6 (14.63%) Clustering
3 5 (12.20%) Computer Science
3 5 (12.20%) RIA
4 4 (9.76%) Device Driver
5 2 (4.88%) Algorithms
6 1 (2.44%) PKI
Operating Systems
1 21 (51.22%) Linux
1 21 (51.22%) Windows
2 3 (7.32%) Unix
3 2 (4.88%) Red Hat Enterprise Linux
3 2 (4.88%) Windows 7
4 1 (2.44%) Mac OS
4 1 (2.44%) Windows 10
4 1 (2.44%) Windows 2000 Server
Processes & Methodologies
1 27 (65.85%) Software Engineering
2 21 (51.22%) Configuration Management
3 12 (29.27%) Integration Testing
4 9 (21.95%) Test Strategy
5 6 (14.63%) UML
5 6 (14.63%) Validation
6 4 (9.76%) Microservices
6 4 (9.76%) Requirements Management
7 2 (4.88%) Data Protection
7 2 (4.88%) High Availability
7 2 (4.88%) User Acceptance Testing
8 1 (2.44%) BDD
8 1 (2.44%) DevOps
8 1 (2.44%) Digital Signal Processing
8 1 (2.44%) Kanban
8 1 (2.44%) Network Management
8 1 (2.44%) Network Monitoring
8 1 (2.44%) Open Source
8 1 (2.44%) Signal Processing
8 1 (2.44%) Unit Testing
Programming Languages
1 18 (43.90%) C++
2 17 (41.46%) Java
3 12 (29.27%) SQL
4 9 (21.95%) Python
5 7 (17.07%) Bash Shell
5 7 (17.07%) JavaScript
5 7 (17.07%) T-SQL
6 6 (14.63%) MATLAB
6 6 (14.63%) Perl
6 6 (14.63%) Ruby
7 5 (12.20%) ANSI C
8 3 (7.32%) C#
9 1 (2.44%) Embedded C
9 1 (2.44%) Embedded C++
9 1 (2.44%) PowerShell
9 1 (2.44%) Tcl
Qualifications
1 13 (31.71%) Security Cleared
2 9 (21.95%) SC Cleared
3 3 (7.32%) Degree
3 3 (7.32%) HNC
4 2 (4.88%) DV Cleared
4 2 (4.88%) RHCE
Quality Assurance & Compliance
1 2 (4.88%) ECSS
System Software
1 3 (7.32%) Cygwin
2 1 (2.44%) Active Directory
Systems Management
1 3 (7.32%) Puppet
2 2 (4.88%) Salt
3 1 (2.44%) WSUS
Vendors
1 7 (17.07%) Serena
1 7 (17.07%) Sybase
2 3 (7.32%) Microsoft
3 2 (4.88%) Red Hat